基于故障风险指标排序的安全约束最优潮流
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摘要
安全约束最优潮流(SCOPF)是一种常用的电力系统运行调度方法,但由于需要考虑大量的预想事故,问题的求解十分困难。如何加快SCOPF的求解速度是现阶段研究的热点问题。在传统的基于故障严重度排序的安全约束最优潮流基础上进行改进,采用改进过载风险指标代替传统的严重度指标,并考虑电力网络实时的天气状况,提出了一种新型的基于故障过载风险指标排序的安全约束最优潮流算法。算例分析表明,该算法所采用的故障集更小,具有迭代速度快、安全性高和经济性好的特点,可为调度员的运行决策提供重要参考。
Security-constrained optimal power flow(SCOPF) is a commonly used tool for power system planning and operation. Since a large number of contingencies are involved, it is very difficult to solve the problem. How to accelerate the solution process of the SCOPF has been a hot topic. Based on the traditional security-constrained optimal power flow according to screening of contingencies, this paper replaces the traditional severity index with overload risk and considers the probabilities of contingencies caused by real-time weather conditions. A new SCOPF algorithm based on overload risk screening of contingencies is proposed. Numerical results show that the proposed algorithm has a smaller contingency set, and is speedy, safely and economical. The proposed new iterative algorithm for the SCOPF can thus serve as a decision-making tool for the dispatchers.
Security-constrained optimal power flow(SCOPF) is a commonly used tool for power system planning and operation. Since a large number of contingencies are involved, it is very difficult to solve the problem. How to accelerate the solution process of the SCOPF has been a hot topic. Based on the traditional security-constrained optimal power flow according to screening of contingencies, this paper replaces the traditional severity index with overload risk and considers the probabilities of contingencies caused by real-time weather conditions. A new SCOPF algorithm based on overload risk screening of contingencies is proposed. Numerical results show that the proposed algorithm has a smaller contingency set, and is speedy, safely and economical. The proposed new iterative algorithm for the SCOPF can thus serve as a decision-making tool for the dispatchers.
引文
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[16]文云峰,江宇飞,沈策,等.多阶段协调的风险调度模型及算法研究[J].中国电机工程学报,2014,34(1):155-161.WEN Yunfeng,JIANG Yufei,SHEN Ce,et al.Research on the model and algorithm of multistage coordinated risk-based dispatch[J].Proceedings of the CSEE,2014,34(1):155-161.
[17]WEN Y F,WANG Y,GUO C X,et al.Risk-oriented preventive control of transmission lines overload[C]//Proceeding of IEEE PES General Meeting,San Diego,USA,22-26 July,2012.
[18]杨欢,邹斌.含相关性随机变量的概率最优潮流问题的蒙特卡罗模拟方法[J].电力系统保护与控制,2012,40(19):110-115.YANG Huan,ZOU Bin.A Monte Carlo simulation method for probabilistic optimal power flow with correlated stochastic variables[J].Power System Protection and Control,2012,40(19):110-115.
[19]WANG Qing,ZHANG Guangyuan,MCCALLEY J D,et al.Risk-based locational marginal pricing and congestion management[J].IEEE Transactions on Power Systems,2014,29(5):2518-2528.
[20]ALSAC O,STOTT B.Optimal load flow with steady-state security[J].IEEE Transactions on Power Apparatus and Systems,1974,93(3):745-751.
[21]文云峰,崔建磊,张金江,等.面向调度运行的电网安全风险管理控制系统(一)概念及架构与功能设计[J].电力系统自动化,2013,37(9):67-73.WEN Yunfeng,CUI Jianlei,ZHANG Jinjiang,et al.Design of a security risk management system for power system dispatching and operation part one concepts and design of architecture and function[J].Automation of Electric Power Systems,2013,37(9):67-73.
[22]WEN Y F,DONG S F,DENG B,et al.Software Implementation of Risk-based Dispatch[C]//Proceedings of IEEE PES General Meeting,Vancouver,Canada,July 21-25,2013.
[23]张勇军,许亮,吴成文.计及多因素的电网冰灾风险评估模型研究[J].电力系统保护与控制,2012,40(15):12-17.ZHANG Yongjun,XU Liang,WU Chengwen.Research on ice disaster risk evaluation model of power system considering multi-factors[J].Power System Protection and Control,2012,40(15):12-17.
[24]BILLINTON R,SINGH G.Application of adverse and extreme adverse weather:modeling in transmission and distribution system reliability evaluation[J].IEE Proceedings of Generation,Transmission and Distribution,2006,153(1):115-120.
[25]BILLINTON R,ACHARYA J.Consideration of multistate weather models in reliability evaluation of transmission and distribution systems[J].Canadian Journal of Electrical and Computer Engineering,2005:916-922.
[26]BILLINTON R,ALLAN R N.Reliability evaluation of power systems[M].New York and London:Plenum Press,1994:244-245.
[2]夏小琴,韦化,阳育德.暂态稳定约束最优潮流的改进降阶内点算法[J].电工技术学报,2012,27(9):87-92.XIA Xiaoqin,PENG Hua,YANG Yude.An improved reduced-dimension interior point method for transient stability constrained optimal power flow[J].Transactions of China Electrotechical Society,2012,27(9):87-92.
[3]MONTICELLI A,PEREIRA,M V F,GRANVILLE S.Security-constrained optimal power flow with postcontingency corrective rescheduling[J].IEEE Transactions on Power Systems,1987,2(1):175-180.
[4]屠竞哲,甘德强,杨莉,等.基于稳定约束最优潮流方法的“三华”特高压互联电网交直流相互影响分析[J].电力系统保护与控制,2012,40(19):54-60.TU Jingzhe,GAN Deqiang,YANG Li,et al.North China-Central China-East China UHV interconnected power grid AC/DC interaction analysis based on stability constrained optimal power flow method[J].Power System Protection and Control,2012,40(19):54-60.
[5]CAPITANESCU F,MARTINEZ RAMOS J L,PANCIATICI P,et al.State-of-the-art,challenges,and future trends in security constrained optimal power flow[J].Electric Power System Research,2011,81:1731-1741.
[6]WEI H,SASAKI H,KUBOKAWA J,et al.An interior point nonlinear programming for optimal power flow problems with a novel data structure[J].IEEE Transactions on Power Systems,1998,13(3):870-877.
[7]KARMARKAR N.A new polynomial-time algorithm for linear programming[C]//Proceedings of the Sixteenth Annual ACM Symposium on Theory of Computing,1984:302-311.
[8]简金宝,杨林峰,全然.基于改进多中心校正解耦内点法的动态最优潮流并行算法[J].电工技术学报,2012,27(6):232-241.JIAN Jinbao,YANG Linfeng,QUAN Ran.Parallel algorithm of dynamic optimal power flow based on improved multiple centrality corrections decoupling interior point method[J].Transactions of China Electrotechical Society,2012,27(6):232-241.
[9]李尹,张伯明,孙宏斌,等.基于非线性内点法的安全约束最优潮流(一)理论分析[J].电力系统自动化,2007,31(19):7-13.LI Yin,ZHANG Boming,SUN Hongbin,et al.Security constrained optimal power flow based on nonlinear interior point method part one theory analysis[J].Automation of Electric Power Systems,2007,31(19):7-13.
[10]邱晓燕,李兴源,林伟.在线电压稳定性评估中事故筛选和排序方法的研究[J].中国电机工程学报,2004,24(9):50-55.QIU Xiaoyan,LI Xingyuan,LIN wei.Methods for contingency screening and ranking for on-line voltage stability assessment[J].Proceedings of the CSEE,2004,24(9):50-55.
[11]赵晋泉,江晓东,张伯明.一种用于电力系统静态稳定性分析的故障筛选与排序方法[J].电网技术,2005,29(20):62-67.ZHAO Jinquan,JIANG Xiaodong,ZHANG Boming.A contingency screening and ranking method for power system static stability analysis[J].Power System Technology,2005,29(20):62-67.
[12]陈得治,张伯明,吴文传,等.静态电压稳定分析的故障筛选和排序方法[J].电力系统自动化,2008,32(14):16-21.CHEN Dezhi,ZHANG Boming,WU Wenchuan,et al.A contingency screening and ranking method for voltage stability analysis[J].Automation of Electric Power Systems,2008,32(14):16-21.
[13]张勇军,蔡广林,邱文锋.基于最优乘子潮流估计的故障筛选与排序[J].电工技术学报,2010,25(1):123-128.ZHANG Yongjun,CAI Guanglin,QIU Wenfeng.Contingency screening and ranking based on optimal multiplier power flow evaluation[J].Transactions of China Electrotechical Society,2010,25(1):123-128.
[14]CAPITANESCU F,GLAVIC M,ERNST D,et al.Contingency filtering techniques for preventive security-constrained optimal power flow[J].IEEE Transactions on Power Systems,2007,22(4):1690-1697.
[15]PLATBROOD L,CRISCIU H,CAPITANESCU F,et al.Solving very large-scale security-constrained optimal power flow problems by combing iterative contingency selection and network compression[C]//PSCC Conference,2011.
[16]文云峰,江宇飞,沈策,等.多阶段协调的风险调度模型及算法研究[J].中国电机工程学报,2014,34(1):155-161.WEN Yunfeng,JIANG Yufei,SHEN Ce,et al.Research on the model and algorithm of multistage coordinated risk-based dispatch[J].Proceedings of the CSEE,2014,34(1):155-161.
[17]WEN Y F,WANG Y,GUO C X,et al.Risk-oriented preventive control of transmission lines overload[C]//Proceeding of IEEE PES General Meeting,San Diego,USA,22-26 July,2012.
[18]杨欢,邹斌.含相关性随机变量的概率最优潮流问题的蒙特卡罗模拟方法[J].电力系统保护与控制,2012,40(19):110-115.YANG Huan,ZOU Bin.A Monte Carlo simulation method for probabilistic optimal power flow with correlated stochastic variables[J].Power System Protection and Control,2012,40(19):110-115.
[19]WANG Qing,ZHANG Guangyuan,MCCALLEY J D,et al.Risk-based locational marginal pricing and congestion management[J].IEEE Transactions on Power Systems,2014,29(5):2518-2528.
[20]ALSAC O,STOTT B.Optimal load flow with steady-state security[J].IEEE Transactions on Power Apparatus and Systems,1974,93(3):745-751.
[21]文云峰,崔建磊,张金江,等.面向调度运行的电网安全风险管理控制系统(一)概念及架构与功能设计[J].电力系统自动化,2013,37(9):67-73.WEN Yunfeng,CUI Jianlei,ZHANG Jinjiang,et al.Design of a security risk management system for power system dispatching and operation part one concepts and design of architecture and function[J].Automation of Electric Power Systems,2013,37(9):67-73.
[22]WEN Y F,DONG S F,DENG B,et al.Software Implementation of Risk-based Dispatch[C]//Proceedings of IEEE PES General Meeting,Vancouver,Canada,July 21-25,2013.
[23]张勇军,许亮,吴成文.计及多因素的电网冰灾风险评估模型研究[J].电力系统保护与控制,2012,40(15):12-17.ZHANG Yongjun,XU Liang,WU Chengwen.Research on ice disaster risk evaluation model of power system considering multi-factors[J].Power System Protection and Control,2012,40(15):12-17.
[24]BILLINTON R,SINGH G.Application of adverse and extreme adverse weather:modeling in transmission and distribution system reliability evaluation[J].IEE Proceedings of Generation,Transmission and Distribution,2006,153(1):115-120.
[25]BILLINTON R,ACHARYA J.Consideration of multistate weather models in reliability evaluation of transmission and distribution systems[J].Canadian Journal of Electrical and Computer Engineering,2005:916-922.
[26]BILLINTON R,ALLAN R N.Reliability evaluation of power systems[M].New York and London:Plenum Press,1994:244-245.