一种基于相对熵组合赋权法的区间联络线选取方法研究
|
摘要
电网分区后合理确定区间联络线的选取对于抑制短路电流、合理化电网结构、避免连锁故障的发生具有重要意义。为此,研究了一种基于相对熵组合赋权法的区间联络线选取评估方法。该评估方法选取短路电流、潮流分布、潮流转移、电压稳定和节点短路容量作为综合评价的指标,并且采用整体短路电流水平、潮流熵、潮流转移熵、系统的最大负荷裕度和系统短路容量裕度来定量描述上述评价指标。为避免单一赋权法的局限性,采用相对熵组合赋权法确定各评价指标的综合权重,得到区间联络线选取方案的综合评估值,进而确定最优方案。最后利用PSD电力系统分析软件进行仿真,仿真算例验证了该方法的有效性和可行性。
The reasonable selection of interval tie line after network partition is of great significance to reducing the short circuit current, adjusting the power grid structure and avoiding the occurrence of cascading failures. Therefore, an evaluation method for the selection of interval tie line based on combinatorial weighting method of relative entropy is studied. The short circuit current, the power flow distribution, the flow transferring, the voltage stability, the node short circuit capacity are selected as the comprehensive evaluation indexes. And the overall short-circuit current level, the trend of entropy, the entropy of power flow transfer, the maximal load margin, the short circuit capacity margin are used to describe the above evaluation index quantitatively. To avoid the limitation of the single weighting method, combinatorial weighting method of relative entropy is used to determine weight for each evaluation index. Comprehensive assessment values of the selection of interval tie line schemes are obtained and optimal scheme is determined. Finally, the PSD power system analysis software is used to carry out the simulation. The effectiveness and feasibility of the proposed method are verified by the simulation example.
The reasonable selection of interval tie line after network partition is of great significance to reducing the short circuit current, adjusting the power grid structure and avoiding the occurrence of cascading failures. Therefore, an evaluation method for the selection of interval tie line based on combinatorial weighting method of relative entropy is studied. The short circuit current, the power flow distribution, the flow transferring, the voltage stability, the node short circuit capacity are selected as the comprehensive evaluation indexes. And the overall short-circuit current level, the trend of entropy, the entropy of power flow transfer, the maximal load margin, the short circuit capacity margin are used to describe the above evaluation index quantitatively. To avoid the limitation of the single weighting method, combinatorial weighting method of relative entropy is used to determine weight for each evaluation index. Comprehensive assessment values of the selection of interval tie line schemes are obtained and optimal scheme is determined. Finally, the PSD power system analysis software is used to carry out the simulation. The effectiveness and feasibility of the proposed method are verified by the simulation example.
引文
[1]孙艳,凌武能,李如琦,等.采用分布系数和相角匹配分析的电磁环网潮流监控形式[J].电力系统保护与控制,2015,43(17):22-28.SUN Yan,LING Wuneng,LI Ruqi,et al.Power flow control of electromagnetic loop network based on distribution coefficient and phase angle matching analysis[J].Power System Protection and Control,2015,43(17):22-28.
[2]王莹,刘兵,刘天斌,等.特高压直流闭锁后省间紧急功率支援的协调优化调度策略[J].中国电机工程学报,2015,35(11):2695-2702.WANG Ying,LIU Bing,LIU Tianbin,et al.A coordinated optimal scheduling strategy for emergency power support among UHV DC power systems[J].Proceedings of the CSEE,2015,35(11):2695-2702.
[3]潘高峰,王星华,彭显刚,等.复杂网络的社团发现方法在电网分区识别中的应用研究[J].电力系统保护与控制,2013,41(13):116-121.PAN Gaofeng,WANG Xinghua,PENG Xiangang,et al.Study of power grid partition identification method based on community structure detection[J].Power System Protection and Control,2013,41(13):116-121.
[4]许立雄,刘俊勇,刘洋,等.基于负荷电流场的电网分区方法[J].电网技术,2015,39(4):1039-1044.XU Lixiong,LIU Junyong,LIU Yang,et al.A load current field-based algorithm for partitioning power networks[J].Power System Technology,2015,39(4):1039-1044.
[5]杨冬,刘玉田,牛新生.分区电网限流运行方式的综合决策方法[J].电力系统自动化,2010,34(12):34-38.YANG Dong,LIU Yutian,NIU Xinsheng.Integrated decision method of operation schemes for limiting shortcircuit currents in district grids[J].Automation of Electric Power Systems,2010,34(12):34-38.
[6]张永康,蔡泽祥,李爱民,等.限制500 k V电网短路电流的网架调整优化算法[J].电力系统自动化,2009,33(22):34-39.ZHANG Yongkang,CAI Zexiang,LI Aimin,et al.An optimization algorithm for short-circuit current limitation of 500 k V power grid by adjusting power grid configuration[J].Automation of Electric Power Systems,2009,33(22):34-39.
[7]李顺昕,张隽,赵峰,等.唐山地区220 k V电网分区供电方案研究[J].电气应用,2015,34(15):30-34.LI Shunxin,ZHANG Jun,ZHAO Feng,et al.Research on power supply scheme of 220 k V power grid in Tangshan area[J].Electrotechnical Application,2015,34(15):30-34.
[8]YIN Xianggen,ZHANG Zhe,LI Zhenxing,et al.The research and the development of the wide area relaying protection based on fault element identification[J].Protection and Control of Modern Power Systems,2016,1(1):95-107.DOI 10.1186/s41601-016-0023-z.
[9]任建文,魏俊姣.基于GN分区的输电断面快速搜索[J].现代电力,2015,32(3):42-48.REN Jianwen,WEI Junjiao.Fast search for transmission section based on GN partition[J].Modern Electric Power,2015,32(3):42-48.
[10]杨小彬,李和明,尹忠东,等.基于层次分析法的配电网能效指标体系[J].电力系统自动化,2013,37(21):146-150.YANG Xiaobin,LI Heming,YIN Zhongdong,et al.Energy efficiency index system of distribution network based on analytic hierarchy process[J].Automation of Electric Power Systems,2013,37(21):146-150.
[11]黄飞,宋璇坤,周晖,等.基于效果与基础互动的电网智能化水平综合评价指标体系研究[J].电力系统保护与控制,2016,44(11):142-148.HUANG Fei,SONG Xuankun,ZHOU Hui,et al.Research on comprehensive evaluation index system of grid’s intelligence level based on interaction between effect and basis[J].Power System Protection and Control,2016,44(11):142-148.
[12]胡逢彬,桂现才.基于相对熵的决策表连续属性离散化算法[J].计算机与信息技术,2006(4):43-45.HU Fengbin,GUI Xiancai.Discretization algorithm of continuous attributes in decision table based on relative entropy[J].Computer and Information Technology,2006(4):43-45.
[13]李基康,滕欢,郭宁.采用相对熵组合赋权法的500 k V电网短路电流抑制策略优化决策[J].电网技术,2016,40(6):1811-1817.LI Jikang,TENG Huan,GUO Ning.Optimal decision making of short circuit current suppression strategy for500 k V power grid based on relative entropy combined weighting method[J].Power System Technology,2016,40(6):1811-1817.
[14]曾鑫,杨琦,任建文.基于组合赋权法的输电线路脆弱性评估[J].电力系统及其自动化学报,2016,28(8):44-48.ZENG Xin,YANG Qi,REN Jianwen.Transmission line vulnerability assessment based on combination weighting method[J].Proceedings of the CSU-EPSA,2016,28(8):44-48.
[15]林金娇.冀北电网短路电流限制措施的研究[D].北京:华北电力大学,2014.LIN Jinjiao.Research on short circuit current limiting measures of North Hebei Power Grid[D].Beijing:North China Electric Power University,2014.
[16]黄根,罗滇生,李帅虎,等.基于综合灵敏度分析限流的最优断线措施[J].电网技术,2016,40(1):309-315.HUANG Gen,LUO Diansheng,LI Shuaihu,et al.Optimal line-outage measure based on comprehensive sensitivity analysis to limit short-circuit current[J].Power System Technology,2016,40(1):309-315.
[17]曹一家,王光增,曹丽华,等.基于潮流熵的复杂电网自组织临界态判断模型[J].电力系统自动化,2011,35(7):1-6.CAO Yijia,WANG Guangzeng,CAO Lihua,et al.A model of self-organization critical state estimation model for complex power system based on power flow entropy[J].Automation of Electric Power Systems,2011,35(7):1-6.
[18]周宇峰,魏法杰.基于相对熵的多属性决策组合赋权方法[J].运筹与管理,2006,15(5):48-53.ZHOU Yufeng,WEI Fajie.Multiple attribute decision making based on relative entropy[J].Operations Research and Management,2006,15(5):48-53.
[19]李勇,刘俊勇,刘晓宇,等.基于潮流熵测度的连锁故障脆弱线路评估及其在四川主干电网中的应用[J].电力自动化设备,2013,33(10):40-46.LI Yong,LIU Junyong,LIU Xiaoyu,et al.Evaluation of the fault line of chain fault based on power flow entropy and its application in Sichuan power system[J].Electric Power Automation Equipment,2013,33(10):40-46.
[20]杨冬,周勤勇,刘玉田.基于灵敏度分析的限流方案优化决策方法[J].电力自动化设备,2015,35(5):111-118.YANG Dong,ZHOU Qinyong,LIU Yutian.Optimal decision method of current limiting scheme based on sensitivity analysis[J].Electric Power Automation Equipment,2015,35(5):111-118.
[21]张姝,谭熙静,何正友,等.基于层次分析法的复杂配电网健康诊断研究[J].电力系统保护与控制,2013,41(13):7-13.ZHANG Shu,TAN Xijing,HE Zhengyou,et al.A study of health diagnosis for complex distribution grid based on analytic hierarchy process[J].Power System Protection and Control,2013,41(13):7-13.
[22]谭颖,吕智林,李捷.基于改进ELM的风/光/柴/储独立微网分布式电源多目标容量优化配置[J].电力系统保护与控制,2016,44(8):63-70.TAN Ying,LüZhilin,LI Jie.Multi-objective optimal sizing method for distributed power of wind-solardiesel-battery independent microgrid based on improved electromagnetism-like mechanism[J].Power System Protection and Control,2016,44(8):63-70.
[2]王莹,刘兵,刘天斌,等.特高压直流闭锁后省间紧急功率支援的协调优化调度策略[J].中国电机工程学报,2015,35(11):2695-2702.WANG Ying,LIU Bing,LIU Tianbin,et al.A coordinated optimal scheduling strategy for emergency power support among UHV DC power systems[J].Proceedings of the CSEE,2015,35(11):2695-2702.
[3]潘高峰,王星华,彭显刚,等.复杂网络的社团发现方法在电网分区识别中的应用研究[J].电力系统保护与控制,2013,41(13):116-121.PAN Gaofeng,WANG Xinghua,PENG Xiangang,et al.Study of power grid partition identification method based on community structure detection[J].Power System Protection and Control,2013,41(13):116-121.
[4]许立雄,刘俊勇,刘洋,等.基于负荷电流场的电网分区方法[J].电网技术,2015,39(4):1039-1044.XU Lixiong,LIU Junyong,LIU Yang,et al.A load current field-based algorithm for partitioning power networks[J].Power System Technology,2015,39(4):1039-1044.
[5]杨冬,刘玉田,牛新生.分区电网限流运行方式的综合决策方法[J].电力系统自动化,2010,34(12):34-38.YANG Dong,LIU Yutian,NIU Xinsheng.Integrated decision method of operation schemes for limiting shortcircuit currents in district grids[J].Automation of Electric Power Systems,2010,34(12):34-38.
[6]张永康,蔡泽祥,李爱民,等.限制500 k V电网短路电流的网架调整优化算法[J].电力系统自动化,2009,33(22):34-39.ZHANG Yongkang,CAI Zexiang,LI Aimin,et al.An optimization algorithm for short-circuit current limitation of 500 k V power grid by adjusting power grid configuration[J].Automation of Electric Power Systems,2009,33(22):34-39.
[7]李顺昕,张隽,赵峰,等.唐山地区220 k V电网分区供电方案研究[J].电气应用,2015,34(15):30-34.LI Shunxin,ZHANG Jun,ZHAO Feng,et al.Research on power supply scheme of 220 k V power grid in Tangshan area[J].Electrotechnical Application,2015,34(15):30-34.
[8]YIN Xianggen,ZHANG Zhe,LI Zhenxing,et al.The research and the development of the wide area relaying protection based on fault element identification[J].Protection and Control of Modern Power Systems,2016,1(1):95-107.DOI 10.1186/s41601-016-0023-z.
[9]任建文,魏俊姣.基于GN分区的输电断面快速搜索[J].现代电力,2015,32(3):42-48.REN Jianwen,WEI Junjiao.Fast search for transmission section based on GN partition[J].Modern Electric Power,2015,32(3):42-48.
[10]杨小彬,李和明,尹忠东,等.基于层次分析法的配电网能效指标体系[J].电力系统自动化,2013,37(21):146-150.YANG Xiaobin,LI Heming,YIN Zhongdong,et al.Energy efficiency index system of distribution network based on analytic hierarchy process[J].Automation of Electric Power Systems,2013,37(21):146-150.
[11]黄飞,宋璇坤,周晖,等.基于效果与基础互动的电网智能化水平综合评价指标体系研究[J].电力系统保护与控制,2016,44(11):142-148.HUANG Fei,SONG Xuankun,ZHOU Hui,et al.Research on comprehensive evaluation index system of grid’s intelligence level based on interaction between effect and basis[J].Power System Protection and Control,2016,44(11):142-148.
[12]胡逢彬,桂现才.基于相对熵的决策表连续属性离散化算法[J].计算机与信息技术,2006(4):43-45.HU Fengbin,GUI Xiancai.Discretization algorithm of continuous attributes in decision table based on relative entropy[J].Computer and Information Technology,2006(4):43-45.
[13]李基康,滕欢,郭宁.采用相对熵组合赋权法的500 k V电网短路电流抑制策略优化决策[J].电网技术,2016,40(6):1811-1817.LI Jikang,TENG Huan,GUO Ning.Optimal decision making of short circuit current suppression strategy for500 k V power grid based on relative entropy combined weighting method[J].Power System Technology,2016,40(6):1811-1817.
[14]曾鑫,杨琦,任建文.基于组合赋权法的输电线路脆弱性评估[J].电力系统及其自动化学报,2016,28(8):44-48.ZENG Xin,YANG Qi,REN Jianwen.Transmission line vulnerability assessment based on combination weighting method[J].Proceedings of the CSU-EPSA,2016,28(8):44-48.
[15]林金娇.冀北电网短路电流限制措施的研究[D].北京:华北电力大学,2014.LIN Jinjiao.Research on short circuit current limiting measures of North Hebei Power Grid[D].Beijing:North China Electric Power University,2014.
[16]黄根,罗滇生,李帅虎,等.基于综合灵敏度分析限流的最优断线措施[J].电网技术,2016,40(1):309-315.HUANG Gen,LUO Diansheng,LI Shuaihu,et al.Optimal line-outage measure based on comprehensive sensitivity analysis to limit short-circuit current[J].Power System Technology,2016,40(1):309-315.
[17]曹一家,王光增,曹丽华,等.基于潮流熵的复杂电网自组织临界态判断模型[J].电力系统自动化,2011,35(7):1-6.CAO Yijia,WANG Guangzeng,CAO Lihua,et al.A model of self-organization critical state estimation model for complex power system based on power flow entropy[J].Automation of Electric Power Systems,2011,35(7):1-6.
[18]周宇峰,魏法杰.基于相对熵的多属性决策组合赋权方法[J].运筹与管理,2006,15(5):48-53.ZHOU Yufeng,WEI Fajie.Multiple attribute decision making based on relative entropy[J].Operations Research and Management,2006,15(5):48-53.
[19]李勇,刘俊勇,刘晓宇,等.基于潮流熵测度的连锁故障脆弱线路评估及其在四川主干电网中的应用[J].电力自动化设备,2013,33(10):40-46.LI Yong,LIU Junyong,LIU Xiaoyu,et al.Evaluation of the fault line of chain fault based on power flow entropy and its application in Sichuan power system[J].Electric Power Automation Equipment,2013,33(10):40-46.
[20]杨冬,周勤勇,刘玉田.基于灵敏度分析的限流方案优化决策方法[J].电力自动化设备,2015,35(5):111-118.YANG Dong,ZHOU Qinyong,LIU Yutian.Optimal decision method of current limiting scheme based on sensitivity analysis[J].Electric Power Automation Equipment,2015,35(5):111-118.
[21]张姝,谭熙静,何正友,等.基于层次分析法的复杂配电网健康诊断研究[J].电力系统保护与控制,2013,41(13):7-13.ZHANG Shu,TAN Xijing,HE Zhengyou,et al.A study of health diagnosis for complex distribution grid based on analytic hierarchy process[J].Power System Protection and Control,2013,41(13):7-13.
[22]谭颖,吕智林,李捷.基于改进ELM的风/光/柴/储独立微网分布式电源多目标容量优化配置[J].电力系统保护与控制,2016,44(8):63-70.TAN Ying,LüZhilin,LI Jie.Multi-objective optimal sizing method for distributed power of wind-solardiesel-battery independent microgrid based on improved electromagnetism-like mechanism[J].Power System Protection and Control,2016,44(8):63-70.