基于改进连续潮流的输电断面热稳定功率极限计算
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摘要
输电断面的热稳定功率极限关系到电力系统安全稳定运行,是限制电网功率传输的重要因素。为准确、快速评估电网的热稳定运行状态,提出一种改进连续潮流的输电断面热稳定传输功率极限计算方法。在考虑系统线路热稳定约束、发电机最大有功功率约束和部分支路开断后的线路功率约束下,利用线性最优化方法调整各发电机出力;在此基础上,进一步用连续潮流法得到断面热稳定功率极限。最后通过新英格兰39节点系统的不同场景,仿真验证了所提方法的正确性及有效性。
The thermal stability power limit of transmission sections bears on the safe and stable operation of power system,which has an important effect on power transmission of power grid. To accurately and quickly distinguish the thermal stability status of power grid,a new method of calculating the thermal stability power limit of the transmission section with improved continuous power flow was proposed. The constraints of lines and maximum output of generators was considered,then,the output of each generator through linear optimization was adjusted. On this foundation,the thermal stability power limit of the transmission section was obtained by using continuous flow method. Finally,the correctness and validity of the proposed method were verified through New England 39-bus system by simulation for different scenarios.
The thermal stability power limit of transmission sections bears on the safe and stable operation of power system,which has an important effect on power transmission of power grid. To accurately and quickly distinguish the thermal stability status of power grid,a new method of calculating the thermal stability power limit of the transmission section with improved continuous power flow was proposed. The constraints of lines and maximum output of generators was considered,then,the output of each generator through linear optimization was adjusted. On this foundation,the thermal stability power limit of the transmission section was obtained by using continuous flow method. Finally,the correctness and validity of the proposed method were verified through New England 39-bus system by simulation for different scenarios.
引文
1唐晓骏,程振龙,张鑫,等.应对大范围潮流转移的在线电压稳定判别指标[J].电力系统及其自动化学报,2015,27(8):43-48Tang Xiaojun,Cheng Zhenlong,Zhang Xin,et al.On-line voltage stability index for large-scale power flow transferring[J].Proceedings of the CSU-EPSA,2015,27(8):43-48
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3薛磊.电力系统可用输电能力分析的相关研究[D].北京:华北电力大学,2007Xue Lei.Related research on the analysis of ATC in power system[D].Beijing:North China Electric Power University,2007
4刘超.电力系统可用输电能力计算研究[D].武汉:华中科技大学,2011Liu Chao.Research on available transfer capability of power grid[D].Wuhan:Huazhong University of Science and Technology,2011
5 Ejebe G C,Waight J G,Santos-Nieto M,et al.Fast calculation of linear available transfer capability[C]//Power Industry Computer Applications,Pica 99 IEEE International Conference.Santa Clara,CA,USA:IEEE,1999:6319563
6 Sauer P W,Demaree K D,Pai M A.Stability limited load supply and interchange capability[J].Power Engineering Review,1983,102(11):3637-3643
7 Enns M K,Quada J J,Sackett B.Fast linear contingency analysis[J].IEEE Transactions on Power Apparatus&Systems,2007,PAS-101(4):783-791
8赵敏,安宁,施浩波,等.大型互联电网最大输电能力的自动求解算法[J].电网技术,2012,36(11):179-183Zhao Min,An Ning,Shi Haobo,et al.Algorithm research on automatic calculation of large-scale interconnected power system's total transfer capability[J].Power System Technology,2012,36(11):179-183
9 Flueck A J,Chiang H D,Shah K S.Investigating the installed real power transfer capability of a large scale power system under a proposed multiarea interchange schedule using CPFLOW[J].IEEETransactions on Power Systems,1996,11(2):883-889
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12 Luo X,Patton A D,Singh C.Real power transfer capability calculations using multi-layer feed-for-ward neural networks[J].IEEETransactions on Power Systems,2000,15(2):903-908
13徐岩,郅静,王祥晖.基于N-1原则的输电断面热稳定功率极限评估[J].电力系统及其自动化学报,2017,29(1):13-17Xu Yan,Zhi Jing,Wang Xianghui.Evaluation on thermal stability power limit of transmission section based on N-1 principle[J].Proceedings of the CSU-EPSA,2017,29(1):13-17
14刘天琪.现代电力系统分析理论与方法[M].北京:中国电力出版社,2007Liu Tianqi.Modern power system analysis theory and method[M].Beijing:China Electric Power Press,2007
15唐伟,南璐,石玉东,等.复杂网络理论下的电网分区及输电断面搜索方法[J].科学技术与工程,2018,18(16):198-204Tang Wei,Nan Lu,Shi Yudong,et al.Power grid partition and transmission section searching method based on complex network theory[J].Science Technology and Engineering,2018,18(16):198-204
16徐泰山,鲍颜红,苏寅生,等.暂态稳定断面功率极限区间和关联度指标计算[J].电力系统自动化,2016,40(20):154-160Xu Taishan,Bao Yanhong,Su Yinsheng,et al.Calculation of power limit interval and correlation degree for transient stability section[J].Automation of Electric Power Systems,2016,40(20):154-160
17陈静,李华强,刘慧.基于连续潮流法的交直流系统可利用传输能力的计算[J].电力系统保护与控制,2010,38(16):1-5Chen Jing,Li Huaqiang,Liu Hui.Calculation of available transfer capability for AC/DC power systems based on continuation power flow[J].Power System Protection and Control,2010,38(16):1-5
18申森,安俊俊,苗栋,等.基于改进连续潮流法的静态电压稳定分析与研究[J].电测与仪表,2015,52(18):22-26Shen Sen,An Junjun,Miao Dong,et al.The static voltage analysis and research based on the improved continuous power flow[J].Electrical Measurement&Instrumentation,2015,52(18):22-26
2罗钢.电网可用输电能力的计算方法研究[D].武汉:华中科技大学,2014Luo Gang.Research on calculation methods of available transfer capability in power grid[D].Wuhan:Huazhong University of Science and Technology,2014
3薛磊.电力系统可用输电能力分析的相关研究[D].北京:华北电力大学,2007Xue Lei.Related research on the analysis of ATC in power system[D].Beijing:North China Electric Power University,2007
4刘超.电力系统可用输电能力计算研究[D].武汉:华中科技大学,2011Liu Chao.Research on available transfer capability of power grid[D].Wuhan:Huazhong University of Science and Technology,2011
5 Ejebe G C,Waight J G,Santos-Nieto M,et al.Fast calculation of linear available transfer capability[C]//Power Industry Computer Applications,Pica 99 IEEE International Conference.Santa Clara,CA,USA:IEEE,1999:6319563
6 Sauer P W,Demaree K D,Pai M A.Stability limited load supply and interchange capability[J].Power Engineering Review,1983,102(11):3637-3643
7 Enns M K,Quada J J,Sackett B.Fast linear contingency analysis[J].IEEE Transactions on Power Apparatus&Systems,2007,PAS-101(4):783-791
8赵敏,安宁,施浩波,等.大型互联电网最大输电能力的自动求解算法[J].电网技术,2012,36(11):179-183Zhao Min,An Ning,Shi Haobo,et al.Algorithm research on automatic calculation of large-scale interconnected power system's total transfer capability[J].Power System Technology,2012,36(11):179-183
9 Flueck A J,Chiang H D,Shah K S.Investigating the installed real power transfer capability of a large scale power system under a proposed multiarea interchange schedule using CPFLOW[J].IEEETransactions on Power Systems,1996,11(2):883-889
10 Gravener M H,Nwaiikpa C.Available transfer capability and first order sensitivity[J].IEEE Transactions on Power Systems,2002,14(2):512-518
11刁勤华,默哈莫德·夏班,倪以信.运用连续二次规划法计算区域间极限传输容量[J].电力系统自动化,2000(24):5-8Diao Qinhua,Shaban M,Ni Yixin.Inter-area total transfer capability calculation using sequential quadratic programming method in region[J].Automation of Electric Power Systems,2000(24):5-8
12 Luo X,Patton A D,Singh C.Real power transfer capability calculations using multi-layer feed-for-ward neural networks[J].IEEETransactions on Power Systems,2000,15(2):903-908
13徐岩,郅静,王祥晖.基于N-1原则的输电断面热稳定功率极限评估[J].电力系统及其自动化学报,2017,29(1):13-17Xu Yan,Zhi Jing,Wang Xianghui.Evaluation on thermal stability power limit of transmission section based on N-1 principle[J].Proceedings of the CSU-EPSA,2017,29(1):13-17
14刘天琪.现代电力系统分析理论与方法[M].北京:中国电力出版社,2007Liu Tianqi.Modern power system analysis theory and method[M].Beijing:China Electric Power Press,2007
15唐伟,南璐,石玉东,等.复杂网络理论下的电网分区及输电断面搜索方法[J].科学技术与工程,2018,18(16):198-204Tang Wei,Nan Lu,Shi Yudong,et al.Power grid partition and transmission section searching method based on complex network theory[J].Science Technology and Engineering,2018,18(16):198-204
16徐泰山,鲍颜红,苏寅生,等.暂态稳定断面功率极限区间和关联度指标计算[J].电力系统自动化,2016,40(20):154-160Xu Taishan,Bao Yanhong,Su Yinsheng,et al.Calculation of power limit interval and correlation degree for transient stability section[J].Automation of Electric Power Systems,2016,40(20):154-160
17陈静,李华强,刘慧.基于连续潮流法的交直流系统可利用传输能力的计算[J].电力系统保护与控制,2010,38(16):1-5Chen Jing,Li Huaqiang,Liu Hui.Calculation of available transfer capability for AC/DC power systems based on continuation power flow[J].Power System Protection and Control,2010,38(16):1-5
18申森,安俊俊,苗栋,等.基于改进连续潮流法的静态电压稳定分析与研究[J].电测与仪表,2015,52(18):22-26Shen Sen,An Junjun,Miao Dong,et al.The static voltage analysis and research based on the improved continuous power flow[J].Electrical Measurement&Instrumentation,2015,52(18):22-26