2017
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Qiu, Feng; Li, Peijie An Integrated Approach for Power System Restoration Planning Journal Article Proceedings of the IEEE, 105 (7), pp. 1-19, 2017. Links | BibTeX @article{Li2017,
title = {An Integrated Approach for Power System Restoration Planning},
author = {Feng Qiu and Peijie Li},
url = {http://ieeexplore.ieee.org/document/7932458/},
doi = {10.1109/JPROC.2017.2696564},
year = {2017},
date = {2017-05-23},
journal = {Proceedings of the IEEE},
volume = {105},
number = {7},
pages = {1-19},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Li, Peijie; Qi, Junjian; Wang, Jianhui; Wei, Hua; Bai, Xiaoqing; Qiu, Feng An SQP Method Combined with Gradient Sampling for Small-Signal Stability Constrained OPF Journal Article IEEE Transactions on Power Systems, 32 (3), pp. 2372-2381, 2017. Links | BibTeX @article{7539295,
title = {An SQP Method Combined with Gradient Sampling for Small-Signal Stability Constrained OPF},
author = {Peijie Li and Junjian Qi and Jianhui Wang and Hua Wei and Xiaoqing Bai and Feng Qiu},
doi = {10.1109/TPWRS.2016.2598266},
year = {2017},
date = {2017-04-07},
journal = {IEEE Transactions on Power Systems},
volume = {32},
number = {3},
pages = {2372-2381},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Liu, Hui; Yang, Yude; Qi, Junjian; Li, Jinghua; Wei, Hua; Li, Peijie Frequency droop control with scheduled charging of electric vehicles Journal Article IET Generation, Transmission and Distribution, 11 (3), pp. 649 - 656, 2017. Links | BibTeX @article{20170703346989,
title = {Frequency droop control with scheduled charging of electric vehicles},
author = {Hui Liu and Yude Yang and Junjian Qi and Jinghua Li and Hua Wei and Peijie Li},
url = {http://dx.doi.org/10.1049/iet-gtd.2016.0554},
year = {2017},
date = {2017-01-01},
journal = {IET Generation, Transmission and Distribution},
volume = {11},
number = {3},
pages = {649 - 656},
key = {Electric power system control},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
2016
|
Wu, Xueying; Bai, Xiaoqing; Li, Peijie Asymptotically Optimal Scenario Algorithm for the Locating and Sizing of Distributed Generation Journal Article Proceedings of the CSU-EPSA, 28 (12), pp. 18-25, 2016. BibTeX @article{Wu2016,
title = {Asymptotically Optimal Scenario Algorithm for the Locating and Sizing of Distributed Generation},
author = {Xueying Wu and Xiaoqing Bai and Peijie Li},
year = {2016},
date = {2016-12-01},
journal = {Proceedings of the CSU-EPSA},
volume = {28},
number = {12},
pages = {18-25},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Li, Peijie; Luo, Cuiyun; Bai, Xiaoqing; Lin, Songchen; Wei, Hua An extended sequence components method for solving multiphase power flow in distribution networks Journal Article Power System Protection and Control, 44 (3), pp. 15-23, 2016. BibTeX @article{Li2016,
title = {An extended sequence components method for solving multiphase power flow in distribution networks},
author = {Peijie Li and Cuiyun Luo and Xiaoqing Bai and Songchen Lin and Hua Wei},
year = {2016},
date = {2016-02-01},
journal = {Power System Protection and Control},
volume = {44},
number = {3},
pages = {15-23},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Li, Peijie; Liu, Qian; Bai, Xiaoqing; Yang, Yude; Li, Bin A Method of Fault Location in Distribution Network Based on Directed Graph Journal Article Modern Electric Power, 33 (1), pp. 60-68, 2016. BibTeX @article{Li2016b,
title = {A Method of Fault Location in Distribution Network Based on Directed Graph},
author = {Peijie Li and Qian Liu and Xiaoqing Bai and Yude Yang and Bin Li },
year = {2016},
date = {2016-02-01},
journal = {Modern Electric Power},
volume = {33},
number = {1},
pages = {60-68},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Li, Bin; Pan, Guochao; Chen, Biyun; Li, Peijie Limit peak capacity calculation of distributed photovoltaic with power quality constraints Journal Article Dianli Xitong Zidonghua/Automation of Electric Power Systems, 40 (14), pp. 43 - 50, 2016, ISSN: 10001026, (Current injection methods;Distributed generators;Low voltage distribution network;Peak capacity;Photovoltaic power generation;Power quality indices;Power quality problem;Power supply enterprise;). Abstract | Links | BibTeX @article{20163002637862,
title = {Limit peak capacity calculation of distributed photovoltaic with power quality constraints},
author = {Bin Li and Guochao Pan and Biyun Chen and Peijie Li},
url = {http://dx.doi.org/10.7500/AEPS20150929004},
issn = {10001026},
year = {2016},
date = {2016-01-01},
journal = {Dianli Xitong Zidonghua/Automation of Electric Power Systems},
volume = {40},
number = {14},
pages = {43 - 50},
abstract = {With the large number of distributed photovoltaics (PVs) dispersedly accessed in middle-low voltage distribution network, power quality problems of distribution network are becoming increasingly conspicuous, making the limit peak capacity of distributed PV accessed in distribution network the focus of attention. Following a study of the influence factors and the influence level of distributed PV on the power quality, an optimal calculation model based on the current injection method is proposed to meet the need of limits of power quality. The model is constrained by power quality indices of multiple national standards, with the peak value of the distributed generator accessed given for both new and expanded cases of limit peak capacity. The validity and practicability of the model are verified by the test results of the IEEE 33-bus system and actual LCX system. For the features of typical 10 kV line, the safety limits of distributed PV with power quality constraints are given according to different line types in different regions. The results can provide reference for the power supply enterprise in checking the grid-connected application of distributed PVs. © 2016 Automation of Electric Power Systems Press.},
key = {Power quality},
note = {Current injection methods;Distributed generators;Low voltage distribution network;Peak capacity;Photovoltaic power generation;Power quality indices;Power quality problem;Power supply enterprise;},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
With the large number of distributed photovoltaics (PVs) dispersedly accessed in middle-low voltage distribution network, power quality problems of distribution network are becoming increasingly conspicuous, making the limit peak capacity of distributed PV accessed in distribution network the focus of attention. Following a study of the influence factors and the influence level of distributed PV on the power quality, an optimal calculation model based on the current injection method is proposed to meet the need of limits of power quality. The model is constrained by power quality indices of multiple national standards, with the peak value of the distributed generator accessed given for both new and expanded cases of limit peak capacity. The validity and practicability of the model are verified by the test results of the IEEE 33-bus system and actual LCX system. For the features of typical 10 kV line, the safety limits of distributed PV with power quality constraints are given according to different line types in different regions. The results can provide reference for the power supply enterprise in checking the grid-connected application of distributed PVs. © 2016 Automation of Electric Power Systems Press. |
Li, Peijie; Lin, Songchen; Bai, Xiaoqing; Luo, Cuiyun; Wei, Hua Receding-horizon-control-based charging method of electric vehicle considering three-phase model of distribution network Journal Article Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering, 36 (17), pp. 4533 - 4542, 2016, ISSN: 02588013, (Electric vehicle charging;Electric Vehicles (EVs);Optimization effects;Optimization modeling;Optimization problems;Real - time scheduling;Receding horizon control;Three-phase model of distribution networks;). Abstract | Links | BibTeX @article{20163902844134,
title = {Receding-horizon-control-based charging method of electric vehicle considering three-phase model of distribution network},
author = {Peijie Li and Songchen Lin and Xiaoqing Bai and Cuiyun Luo and Hua Wei},
url = {http://dx.doi.org/10.13334/j.0258-8013.pcsee.151783},
issn = {02588013},
year = {2016},
date = {2016-01-01},
journal = {Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering},
volume = {36},
number = {17},
pages = {4533 - 4542},
abstract = {The charging of electric vehicles is extraordinarily stochastic and limited by the security constraints in the distribution network. The electric vehicle charging was formulated as an optimization problem that took into account the three-phase distribution network. Furthermore, based on the receding horizon control theory, an efficient real-time charging strategy was proposed as well. By integrated the features of electric vehicle charging, the proposal method could achieve a good trade-off between the profit and the computing efficiency using the variable horizon receding, selection of partial control targets, slack of constraints and event-driven. Simulation results on Irland-11, IEEE-33 and IEEE-118 distribution networks demonstrate that the proposal optimization model can manage the security constraint effectively. The computing efficiency of the improved proposal strategy is high with excellent optimization effects, while the load and electricity price profile can be tracked well. © 2016 Chin. Soc. for Elec. Eng.},
key = {Electric machine control},
note = {Electric vehicle charging;Electric Vehicles (EVs);Optimization effects;Optimization modeling;Optimization problems;Real - time scheduling;Receding horizon control;Three-phase model of distribution networks;},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The charging of electric vehicles is extraordinarily stochastic and limited by the security constraints in the distribution network. The electric vehicle charging was formulated as an optimization problem that took into account the three-phase distribution network. Furthermore, based on the receding horizon control theory, an efficient real-time charging strategy was proposed as well. By integrated the features of electric vehicle charging, the proposal method could achieve a good trade-off between the profit and the computing efficiency using the variable horizon receding, selection of partial control targets, slack of constraints and event-driven. Simulation results on Irland-11, IEEE-33 and IEEE-118 distribution networks demonstrate that the proposal optimization model can manage the security constraint effectively. The computing efficiency of the improved proposal strategy is high with excellent optimization effects, while the load and electricity price profile can be tracked well. © 2016 Chin. Soc. for Elec. Eng. |
Lv, Renzhou; Bai, Xiaoqing; Li, Peijie; Dai, Jinglong; Lin, Songchen Decentralized charging control of electric vehicles based on alternate direction method of multiplier Journal Article Dianli Xitong Zidonghua/Automation of Electric Power Systems, 40 (16), pp. 56 - 63, 2016, ISSN: 10001026, (Centralized optimization;Computational overheads;Decentralized optimization;Electric Vehicles (EVs);Interactive informations;Method of multipliers;Multi-objective optimization models;Rolling optimization;). Abstract | Links | BibTeX @article{20163402721406,
title = {Decentralized charging control of electric vehicles based on alternate direction method of multiplier},
author = {Renzhou Lv and Xiaoqing Bai and Peijie Li and Jinglong Dai and Songchen Lin},
url = {http://dx.doi.org/10.7500/AEPS20150731006},
issn = {10001026},
year = {2016},
date = {2016-01-01},
journal = {Dianli Xitong Zidonghua/Automation of Electric Power Systems},
volume = {40},
number = {16},
pages = {56 - 63},
abstract = {The random charging of electric vehicles (EVs) will cause many adverse effects on the security and economical operation of a power system. A multi-objective optimization model is proposed for real-time charging control aimed at maximization of the EV owners' benefit and minimization of the active power loss. By using the alternate direction method of multiplier (ADMM), the centralized optimization model of charging can be converted into individual sub-problems in the decentralized optimization model with the device as the unit. For each iteration of ADMM, only a bit of information is exchanged between the device and the adjacent interactive information points, which is conducive to protecting user information security. Meanwhile, some disadvantages due to centralized optimization can be overcome, such as high communication requirements and high computational overhead. Simulations for IEEE 33-bus and actual 119-bus network systems show that the results of the decentralized optimization model and the centralized model are conformable. Moreover, the proposed algorithm shows high computing efficiency, low communication cost and good applicability to the rolling scheduling schema in real-time. © 2016 Automation of Electric Power Systems Press.},
key = {Electric machine control},
note = {Centralized optimization;Computational overheads;Decentralized optimization;Electric Vehicles (EVs);Interactive informations;Method of multipliers;Multi-objective optimization models;Rolling optimization;},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The random charging of electric vehicles (EVs) will cause many adverse effects on the security and economical operation of a power system. A multi-objective optimization model is proposed for real-time charging control aimed at maximization of the EV owners' benefit and minimization of the active power loss. By using the alternate direction method of multiplier (ADMM), the centralized optimization model of charging can be converted into individual sub-problems in the decentralized optimization model with the device as the unit. For each iteration of ADMM, only a bit of information is exchanged between the device and the adjacent interactive information points, which is conducive to protecting user information security. Meanwhile, some disadvantages due to centralized optimization can be overcome, such as high communication requirements and high computational overhead. Simulations for IEEE 33-bus and actual 119-bus network systems show that the results of the decentralized optimization model and the centralized model are conformable. Moreover, the proposed algorithm shows high computing efficiency, low communication cost and good applicability to the rolling scheduling schema in real-time. © 2016 Automation of Electric Power Systems Press. |
Li, Bin; Liang, Shuiying; Zhu, Jing; Li, Peijie Dynamic economic dispatch modelling of microgrid with non-food biomass power generation Journal Article Dianli Xitong Zidonghua/Automation of Electric Power Systems, 40 (11), pp. 39 - 46, 2016, ISSN: 10001026, (Biomass generation;Biomass power generations;Dynamic economic dispatch;Gas power generations;Load characteristics;Micro grid;Photovoltaic power generation;Renewable energies;). Abstract | Links | BibTeX @article{20162402503457,
title = {Dynamic economic dispatch modelling of microgrid with non-food biomass power generation},
author = {Bin Li and Shuiying Liang and Jing Zhu and Peijie Li},
url = {http://dx.doi.org/10.7500/AEPS20150521014},
issn = {10001026},
year = {2016},
date = {2016-01-01},
journal = {Dianli Xitong Zidonghua/Automation of Electric Power Systems},
volume = {40},
number = {11},
pages = {39 - 46},
abstract = {For its appreciable utilization rate, non-food biomass energy is an important future mode of distributed generation and energy production. This paper focuses on biomass power generation, photovoltaic power generation conditions, and analyzes the load characteristics in Guangxi rural areas prior to building a mathematical model of marsh gas power generation and bagasse power generation based on statistics. According to different characteristics of climate in summer and winter while considering the two operation modes grid-connection and islanding, a microgrid dynamic economic dispatch model including biomass generation is proposed. On the basis of subsidies for renewable energy prices, this model takes the minimum cost of power generation and minimum power deviation as the objective. In summer, marsh gas power generation and photovoltaic power generation is the main power supply, in winter, bagasse is the main power supply, while diesel generation plays the role as load reserve. Simulation results show that the model can fully evaluate the economy of distributed power users to meet their diverse needs by providing rural areas rich in non-food biomass energy with an independent scheme for microgrid solution. © 2016, Automation of Electric Power Systems Press.},
key = {Electric load dispatching},
note = {Biomass generation;Biomass power generations;Dynamic economic dispatch;Gas power generations;Load characteristics;Micro grid;Photovoltaic power generation;Renewable energies;},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
For its appreciable utilization rate, non-food biomass energy is an important future mode of distributed generation and energy production. This paper focuses on biomass power generation, photovoltaic power generation conditions, and analyzes the load characteristics in Guangxi rural areas prior to building a mathematical model of marsh gas power generation and bagasse power generation based on statistics. According to different characteristics of climate in summer and winter while considering the two operation modes grid-connection and islanding, a microgrid dynamic economic dispatch model including biomass generation is proposed. On the basis of subsidies for renewable energy prices, this model takes the minimum cost of power generation and minimum power deviation as the objective. In summer, marsh gas power generation and photovoltaic power generation is the main power supply, in winter, bagasse is the main power supply, while diesel generation plays the role as load reserve. Simulation results show that the model can fully evaluate the economy of distributed power users to meet their diverse needs by providing rural areas rich in non-food biomass energy with an independent scheme for microgrid solution. © 2016, Automation of Electric Power Systems Press. |
2015
|
Bai, Xiaoqing; Wu, Xueying; Li, Peijie; Yang, Xiuju Locating and Sizing of Photovolataic Power Generations by Considering Voltage Stability Margin in Distribution Network Journal Article Modern Electric Power, 32 (4), pp. 34-41, 2015. BibTeX @article{Bai2015,
title = {Locating and Sizing of Photovolataic Power Generations by Considering Voltage Stability Margin in Distribution Network},
author = {Xiaoqing Bai and Xueying Wu and Peijie Li and Xiuju Yang},
year = {2015},
date = {2015-08-01},
journal = {Modern Electric Power},
volume = {32},
number = {4},
pages = {34-41},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Fu, Zhisheng; Bai, Xiaoqing; Li, Peijie; Wei, Hua A high-speed multi-core parallel method for solving large-scale security constrained OPF Journal Article Power System Protection and Control, 43 (3), pp. 29-37, 2015. BibTeX @article{Fu2015,
title = {A high-speed multi-core parallel method for solving large-scale security constrained OPF},
author = {Zhisheng Fu and Xiaoqing Bai and Peijie Li and Hua Wei},
year = {2015},
date = {2015-02-01},
journal = {Power System Protection and Control},
volume = {43},
number = {3},
pages = {29-37},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Li, Peijie; Lu, Yong; Bai, Xiaoqing; Wei, Hua Decentralized optimization for dynamic economic dispatch based on alternating direction method of multipliers Journal Article Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering, 35 (10), pp. 2428 - 2435, 2015, ISSN: 02588013, (Alternating direction method of multipliers;Decentralized models;Decentralized optimization;Dynamic economic dispatch;Dynamic economic dispatch problems (DED);Global coordination;Messages passing;Objective functions;). Abstract | Links | BibTeX @article{20152400941392,
title = {Decentralized optimization for dynamic economic dispatch based on alternating direction method of multipliers},
author = {Peijie Li and Yong Lu and Xiaoqing Bai and Hua Wei},
url = {http://dx.doi.org/10.13334/j.0258-8013.pcsee.2015.10.008},
issn = {02588013},
year = {2015},
date = {2015-01-01},
journal = {Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering},
volume = {35},
number = {10},
pages = {2428 - 2435},
abstract = {Following the advances in convex optimization, this paper proposed a decentralized method based on the alternating direction method of multipliers (ADMM) for the dynamic economic dispatch (DED) problem to overcome the difficulties arising from the traditional centralized dispatch method using in smart grid. Inspired by the modeling idea of CIM in IEC 61970 standard, which decomposes the power grid into devices, terminal and connectivity node, a decentralized model of power grid was obtained. Each device exchanges simple messages with its neighbors in the network, and solves the individual sub optimization problem by itself in parallel pattern. No global coordination and synchronizing iterations are needed in the proposed method, which possess the self-healing and plug-in features. Moreover, the convergence of the proposed method is guaranteed since the device objective function and constraints are convex. Numerical simulations on some systems confirm the extremely efficiency and good convergence of the algorithm. It offers a new idea for development of future power grid. ©2015 Chin. Soc. for Elec. Eng.},
key = {Electric load dispatching},
note = {Alternating direction method of multipliers;Decentralized models;Decentralized optimization;Dynamic economic dispatch;Dynamic economic dispatch problems (DED);Global coordination;Messages passing;Objective functions;},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Following the advances in convex optimization, this paper proposed a decentralized method based on the alternating direction method of multipliers (ADMM) for the dynamic economic dispatch (DED) problem to overcome the difficulties arising from the traditional centralized dispatch method using in smart grid. Inspired by the modeling idea of CIM in IEC 61970 standard, which decomposes the power grid into devices, terminal and connectivity node, a decentralized model of power grid was obtained. Each device exchanges simple messages with its neighbors in the network, and solves the individual sub optimization problem by itself in parallel pattern. No global coordination and synchronizing iterations are needed in the proposed method, which possess the self-healing and plug-in features. Moreover, the convergence of the proposed method is guaranteed since the device objective function and constraints are convex. Numerical simulations on some systems confirm the extremely efficiency and good convergence of the algorithm. It offers a new idea for development of future power grid. ©2015 Chin. Soc. for Elec. Eng. |
Li, Bin; Zhu, Jing; Li, Peijie; Wei, Hua Island partition of distribution network with unreliable distributed generators Journal Article Dianli Xitong Zidonghua/Automation of Electric Power Systems, 39 (8), pp. 59 - 65, 2015, ISSN: 10001026, (Analytical expressions;Distributed generator (DGs);Distributed generators;Distribution systems;Mathematical optimizations;Power supply reliability;Security constraint;Solution optimizations;). Abstract | Links | BibTeX @article{20152000840813,
title = {Island partition of distribution network with unreliable distributed generators},
author = {Bin Li and Jing Zhu and Peijie Li and Hua Wei},
url = {http://dx.doi.org/10.7500/AEPS20140811001},
issn = {10001026},
year = {2015},
date = {2015-01-01},
journal = {Dianli Xitong Zidonghua/Automation of Electric Power Systems},
volume = {39},
number = {8},
pages = {59 - 65},
abstract = {For its ability to improve the system reliability by bringing the potential of the distributed generators (DGs) into full play under fault conditions, island partition has become an important operation mode. Based on the characteristics of the DGs and islanded operation of the distribution network, the combined power supply expression of different reliability types for DGs is established. And according to the load level and controllability, the priority to recovering the first-level and second-level load is given based on meeting the various security constraints. A mathematical model based on island partition of distribution network is developed. As all solutions are found using analytical expressions of mathematical optimization, the solution optimization is realized to the full. The effectiveness and practicability of the model proposed is proved by a number of test results. ©2015 State Grid Electric Power Research Institute Press},
key = {Electric power distribution},
note = {Analytical expressions;Distributed generator (DGs);Distributed generators;Distribution systems;Mathematical optimizations;Power supply reliability;Security constraint;Solution optimizations;},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
For its ability to improve the system reliability by bringing the potential of the distributed generators (DGs) into full play under fault conditions, island partition has become an important operation mode. Based on the characteristics of the DGs and islanded operation of the distribution network, the combined power supply expression of different reliability types for DGs is established. And according to the load level and controllability, the priority to recovering the first-level and second-level load is given based on meeting the various security constraints. A mathematical model based on island partition of distribution network is developed. As all solutions are found using analytical expressions of mathematical optimization, the solution optimization is realized to the full. The effectiveness and practicability of the model proposed is proved by a number of test results. ©2015 State Grid Electric Power Research Institute Press |
Yang, Xiuju; Bai, Xiaoqing; Li, Peijie; Wei, Hua Charging optimization of massive electric vehicles in distribution network Journal Article Dianli Zidonghua Shebei/Electric Power Automation Equipment, 35 (6), pp. 31 - 36, 2015, ISSN: 10066047, (Charging loads;Distribution network operation;Distribution transformer;District services;Load fluctuations;Optimization effects;Optimization modeling;Primal-dual interior point methods;). Abstract | Links | BibTeX @article{20152901039088,
title = {Charging optimization of massive electric vehicles in distribution network},
author = {Xiuju Yang and Xiaoqing Bai and Peijie Li and Hua Wei},
url = {http://dx.doi.org/10.16081/j.issn.1006-6047.2015.06.005},
issn = {10066047},
year = {2015},
date = {2015-01-01},
journal = {Dianli Zidonghua Shebei/Electric Power Automation Equipment},
volume = {35},
number = {6},
pages = {31 - 36},
abstract = {An EVs(Electric Vehicles) charging optimization model based on the safe operation of distribution network is proposed, which takes the EVs in a distribution transformer district as a small "assembly", the minimum power loss as its objective and the node voltage, line power flow, distribution transformer capacity, charging power increase and charging energy balance as its constraints to optimize the charging power of the "assembly" in the slow charging mode. The district service provider is responsible for the supervision of EV charging behaviour. The primal-dual interior point method is adopted to solve the model. The calculative results of IEEE 33-bus system, PG&E 69 system and an actual 119-bus system show the excellent convergency and optimization effect of the algorithm. The dynamically balanced charging power effectively reduces the network loss, smoothes the load fluctuation, improves the terminal voltage level, avoids the short- term voltage quality decline, feeder heavy load and distribution transformer overload, and improves the economy and security of distribution network operation. ©, 2015, Electric Power Automation Equipment Press. All right reserved.},
key = {Electric losses},
note = {Charging loads;Distribution network operation;Distribution transformer;District services;Load fluctuations;Optimization effects;Optimization modeling;Primal-dual interior point methods;},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
An EVs(Electric Vehicles) charging optimization model based on the safe operation of distribution network is proposed, which takes the EVs in a distribution transformer district as a small "assembly", the minimum power loss as its objective and the node voltage, line power flow, distribution transformer capacity, charging power increase and charging energy balance as its constraints to optimize the charging power of the "assembly" in the slow charging mode. The district service provider is responsible for the supervision of EV charging behaviour. The primal-dual interior point method is adopted to solve the model. The calculative results of IEEE 33-bus system, PG&E 69 system and an actual 119-bus system show the excellent convergency and optimization effect of the algorithm. The dynamically balanced charging power effectively reduces the network loss, smoothes the load fluctuation, improves the terminal voltage level, avoids the short- term voltage quality decline, feeder heavy load and distribution transformer overload, and improves the economy and security of distribution network operation. ©, 2015, Electric Power Automation Equipment Press. All right reserved. |
2013
|
Li, Peijie; Wei, Hua; Bai, Xiaoqing Small-signal stability constrained optimal power flow based on NLSDP Journal Article Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering, 33 (7), pp. 69 - 76, 2013, ISSN: 02588013, (Eigenvalue optimization;Interior point methods;Optimal power flows;Semi-definite programming;Small signal stability;). Abstract | BibTeX @article{20131416162366,
title = {Small-signal stability constrained optimal power flow based on NLSDP},
author = {Peijie Li and Hua Wei and Xiaoqing Bai},
issn = {02588013},
year = {2013},
date = {2013-01-01},
journal = {Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering},
volume = {33},
number = {7},
pages = {69 - 76},
abstract = {For the implicit and non-Lipschitz property of spectral abscissa of system state matrix, it is a big challenge to model the small-signal stability constraints of optimal power flow (OPF) directly. Based on the eigenvalue optimization, this paper presented a nonlinear semi-definite programming (NLSDP) model to handle the small-signal stability constraints. According to the Lyapunov theorem, positive definite constraints were introduced to describe the small-signal stability, yielding an accurate equivalent expression. By formulating the positive definite constraints into nonlinear ones, the NLSDP model was transformed into a nonlinear programming, which could be solved by the interior point method. Numerical simulations on WSCC-9 and IEEE-14 systems confirmed the validity of the model and high robustness of the algorithm. It offers a new idea for considering small-signal stability constraints. © 2013 Chinese Society for Electrical Engineering.},
key = {Eigenvalues and eigenfunctions},
note = {Eigenvalue optimization;Interior point methods;Optimal power flows;Semi-definite programming;Small signal stability;},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
For the implicit and non-Lipschitz property of spectral abscissa of system state matrix, it is a big challenge to model the small-signal stability constraints of optimal power flow (OPF) directly. Based on the eigenvalue optimization, this paper presented a nonlinear semi-definite programming (NLSDP) model to handle the small-signal stability constraints. According to the Lyapunov theorem, positive definite constraints were introduced to describe the small-signal stability, yielding an accurate equivalent expression. By formulating the positive definite constraints into nonlinear ones, the NLSDP model was transformed into a nonlinear programming, which could be solved by the interior point method. Numerical simulations on WSCC-9 and IEEE-14 systems confirmed the validity of the model and high robustness of the algorithm. It offers a new idea for considering small-signal stability constraints. © 2013 Chinese Society for Electrical Engineering. |
Li, Peijie; Wei, Hua; Li, Bin; Yang, Yude Eigenvalue-optimisation-based optimal power flow with small-signal stability constraints Journal Article IET Generation, Transmission and Distribution, 7 (5), pp. 440 - 450, 2013, ISSN: 17518687, (Damping controllers;Interior point methods;Model and algorithms;Nonlinear programming problem;Objective functions;Optimal power flows;Semi-definite programming;Small signal stability;). Abstract | Links | BibTeX @article{20133116560413,
title = {Eigenvalue-optimisation-based optimal power flow with small-signal stability constraints},
author = {Peijie Li and Hua Wei and Bin Li and Yude Yang},
url = {http://dx.doi.org/10.1049/iet-gtd.2012.0171},
issn = {17518687},
year = {2013},
date = {2013-01-01},
journal = {IET Generation, Transmission and Distribution},
volume = {7},
number = {5},
pages = {440 - 450},
abstract = {The occasional oscillation in large interconnected power system can cause the small-signal stability problem. As a complement to the damping controllers, the small-signal stability constrained-optimal power flow (SSSC-OPF) model has been used to obtain the required stability margin. Applying the approximate technique to SSSC-OPF may not only increase the value of the objective function, but also suffer the oscillation of the iterations during the solving process. In this study, an eigenvalue-optimisation-based non-linear semi-definite programming (NLSDP) model and algorithm is proposed for the small-signal stability constraints. It is a significant challenge to model the SSSC-OPF directly because of the implicit and non-Lipschitz property for the spectral abscissa of the system state matrix. Based on the Lyapunov theorem, the positive definite constraints can express the small-signal stability accurately and equivalently, so that SSSC-OPF can be modelled as NLSDP. Afterward, the NLSDP model is transformed into a non-linear programming problem by formulating the positive definite constraints into non-linear ones, which can be solved by the interior point method finally. Numerical simulations for two systems confirm the validity of the model and the robustness of the algorithm. ©The Institution of Engineering and Technology 2013.},
key = {Eigenvalues and eigenfunctions},
note = {Damping controllers;Interior point methods;Model and algorithms;Nonlinear programming problem;Objective functions;Optimal power flows;Semi-definite programming;Small signal stability;},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The occasional oscillation in large interconnected power system can cause the small-signal stability problem. As a complement to the damping controllers, the small-signal stability constrained-optimal power flow (SSSC-OPF) model has been used to obtain the required stability margin. Applying the approximate technique to SSSC-OPF may not only increase the value of the objective function, but also suffer the oscillation of the iterations during the solving process. In this study, an eigenvalue-optimisation-based non-linear semi-definite programming (NLSDP) model and algorithm is proposed for the small-signal stability constraints. It is a significant challenge to model the SSSC-OPF directly because of the implicit and non-Lipschitz property for the spectral abscissa of the system state matrix. Based on the Lyapunov theorem, the positive definite constraints can express the small-signal stability accurately and equivalently, so that SSSC-OPF can be modelled as NLSDP. Afterward, the NLSDP model is transformed into a non-linear programming problem by formulating the positive definite constraints into non-linear ones, which can be solved by the interior point method finally. Numerical simulations for two systems confirm the validity of the model and the robustness of the algorithm. ©The Institution of Engineering and Technology 2013. |
2012
|
Li, Peijie; Wei, Hua; Li, Bin; Yang, Yude A parallel numerical factorization algorithm based on directed acyclic graph in optimal power flow Journal Article Dianli Xitong Zidonghua/Automation of Electric Power Systems, 36 (19), pp. 66 - 72, 2012, ISSN: 10001026, (Bus bandwidth;Directed acyclic graph (DAG);Factorization algorithms;Floating point operations;Large-scale applications;Multicore architectures;Optimal power flows;Parallel Computation;Supernodes;). Abstract | Links | BibTeX @article{20124615671921,
title = {A parallel numerical factorization algorithm based on directed acyclic graph in optimal power flow},
author = {Peijie Li and Hua Wei and Bin Li and Yude Yang},
url = {http://dx.doi.org/10.3969/j.issn.1000-1026.2012.19.012},
issn = {10001026},
year = {2012},
date = {2012-01-01},
journal = {Dianli Xitong Zidonghua/Automation of Electric Power Systems},
volume = {36},
number = {19},
pages = {66 - 72},
abstract = {Despite the fact that the formation of the CPU multi-core architecture is the physical basis of parallel computation including cloud computation, the early fine-grained parallel algorithms cannot work well enough as expected in the new architecture. Based on the directed acyclic graph, the supernodes are split into blocks. The factorization operation is split into many asynchronously executed small tasks to reduce the influence of bus bandwidth with full use of the floating-point operation capability of all the cores. Numerical simulations on five systems show that the proposed method is very promising for large-scale application because of its significant speedup. © 2012 State Grid Electric Power Research Institute Press.},
key = {Computer architecture},
note = {Bus bandwidth;Directed acyclic graph (DAG);Factorization algorithms;Floating point operations;Large-scale applications;Multicore architectures;Optimal power flows;Parallel Computation;Supernodes;},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Despite the fact that the formation of the CPU multi-core architecture is the physical basis of parallel computation including cloud computation, the early fine-grained parallel algorithms cannot work well enough as expected in the new architecture. Based on the directed acyclic graph, the supernodes are split into blocks. The factorization operation is split into many asynchronously executed small tasks to reduce the influence of bus bandwidth with full use of the floating-point operation capability of all the cores. Numerical simulations on five systems show that the proposed method is very promising for large-scale application because of its significant speedup. © 2012 State Grid Electric Power Research Institute Press. |
2010
|
Li, Bin; Wei, Hua; Yang, Yude; Li, Peijie The Optimal Power Flow of the Large-Scale Extra High Voltage AC/DC Power Systems Journal Article Modern Electric Power, 27 (4), pp. 1-6, 2010. BibTeX @article{Li2010b,
title = {The Optimal Power Flow of the Large-Scale Extra High Voltage AC/DC Power Systems},
author = { Bin Li and Hua Wei and Yude Yang and Peijie Li },
year = {2010},
date = {2010-08-01},
journal = {Modern Electric Power},
volume = {27},
number = {4},
pages = {1-6},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Li, Peijie; He, Guangyu; Li, Bin; Wei, Hua Interface design of on-line Optimal Power Flow (OPF) based on xml and IEEE format Conference IEEE Power and Energy Society (PES) 2010. Links | BibTeX @conference{Li2010,
title = {Interface design of on-line Optimal Power Flow (OPF) based on xml and IEEE format},
author = {Peijie Li and Guangyu He and Bin Li and Hua Wei},
url = {http://dx.doi.org/10.1109/APPEEC.2010.5448917},
year = {2010},
date = {2010-03-01},
organization = {IEEE Power and Energy Society (PES)},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
2009
|
Li, Bin; Li, Peijie; Wei, Hua; Yang, Yude Online Application Software Development of Optimal Power Flow in Power System Based on Interior Point Algorithm Journal Article Modern Electric Power, 26 (3), pp. 1-6, 2009. BibTeX @article{Li2009,
title = {Online Application Software Development of Optimal Power Flow in Power System Based on Interior Point Algorithm},
author = {Bin Li and Peijie Li and Hua Wei and Yude Yang },
year = {2009},
date = {2009-07-01},
journal = {Modern Electric Power},
volume = {26},
number = {3},
pages = {1-6},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Li, Baowei; Wei, Hua; Li, Bin; Li, Peijie Mixed complementarity method for PV-PQ bus type switching in power flow computation Journal Article Dianli Xitong Zidonghua/Automation of Electric Power Systems, 33 (14), pp. 37 - 40, 2009, ISSN: 10001026, (Complementarity problems;Interior point method (IPM);PV-PQ bus type switching;Variational inequalities;Voltage stability;). Abstract | BibTeX @article{20093412260432,
title = {Mixed complementarity method for PV-PQ bus type switching in power flow computation},
author = {Baowei Li and Hua Wei and Bin Li and Peijie Li},
issn = {10001026},
year = {2009},
date = {2009-01-01},
journal = {Dianli Xitong Zidonghua/Automation of Electric Power Systems},
volume = {33},
number = {14},
pages = {37 - 40},
abstract = {The PV-PQ bus type switching is a typical complementarity problem, which reflects the discipline of voltage control by reactive power in power flow computation. By introducing the complementarity theory, the strict mixed complementarity model for PV-PQ bus type switching is constructed, and it is solved successfully by the modern interior method integrated with a complementarity relaxation method. Analysis on PV-PQ type switching logic and comparison with the complementarity model show that the type switching logic may cause the bus type misidentification and obtain static voltage unstable points. As a result, the related numerical and identificate divergence may not correspond to system voltage unstable point. All these issues can be involved in the complementarity model to improve the reliability of the results. The conclusions are verified by simulation of IEEE standard systems and a real system. © 2009 State Grid Electric Power Research Institute Press.},
key = {Switching},
note = {Complementarity problems;Interior point method (IPM);PV-PQ bus type switching;Variational inequalities;Voltage stability;},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The PV-PQ bus type switching is a typical complementarity problem, which reflects the discipline of voltage control by reactive power in power flow computation. By introducing the complementarity theory, the strict mixed complementarity model for PV-PQ bus type switching is constructed, and it is solved successfully by the modern interior method integrated with a complementarity relaxation method. Analysis on PV-PQ type switching logic and comparison with the complementarity model show that the type switching logic may cause the bus type misidentification and obtain static voltage unstable points. As a result, the related numerical and identificate divergence may not correspond to system voltage unstable point. All these issues can be involved in the complementarity model to improve the reliability of the results. The conclusions are verified by simulation of IEEE standard systems and a real system. © 2009 State Grid Electric Power Research Institute Press. |