计及母联开关的高压直流工程最后断路器智能判断方法
|
摘要
为了提高电网运行的安全可靠性,提出了一种计及母联开关的高压直流工程最后断路器智能判断方法。建立了涉及母联开关的交流场等效模型和图论求解模型,针对各交流母线上接入的N个母联开关,将交流母线抽象为N+1个节点,各节点之间经母联开关相连。以线路汇集节点为起点,以阀组为终点,通过搜索图论模型中起点到终点之间割边的集合,解决了多种功率输送方式下使用常规逻辑设计无法实现包含母联开关在内的整个交流场阀组最后断路器求解的问题。理论推导和工程用例结果表明,该方法能够大大降低工程应用程序的编写和调试难度,有效规避工程扩建期间由于功能修改带来的风险,确保电网安全可靠地运行。
In order to improve the safety and reliability of power grid operation, an intelligent judement method for the last circuit breaker in HVDC project including bus-tie switch is proposed. An equivalent model and graph theory model for the last circuit breaker of AC field including bus-tie switch is set up, in view of the N bus-tie switches which are inserted in each AC bus, the AC bus is abstracted as N+1 nodes, and the nodes are connected by bus-tie swich. Taking line convergence joint as starting point and converter as the finishing piont, by way of searching the set of cut edges between starting and finishing point in the graph theory model, the problem that using conventional logic design can not realize the judement of last breaker of the full AC filed including bus-tie switch under multiple power transmission mode is sovled. Theoretical analysis and engineering case results show that this method can make the engineering application programming and debugging much easier, effectively avoid the risk of functional changes during the project expansion, and ensure the safe and reliable operation of power grid.
In order to improve the safety and reliability of power grid operation, an intelligent judement method for the last circuit breaker in HVDC project including bus-tie switch is proposed. An equivalent model and graph theory model for the last circuit breaker of AC field including bus-tie switch is set up, in view of the N bus-tie switches which are inserted in each AC bus, the AC bus is abstracted as N+1 nodes, and the nodes are connected by bus-tie swich. Taking line convergence joint as starting point and converter as the finishing piont, by way of searching the set of cut edges between starting and finishing point in the graph theory model, the problem that using conventional logic design can not realize the judement of last breaker of the full AC filed including bus-tie switch under multiple power transmission mode is sovled. Theoretical analysis and engineering case results show that this method can make the engineering application programming and debugging much easier, effectively avoid the risk of functional changes during the project expansion, and ensure the safe and reliable operation of power grid.
引文
[1]刘振亚.特高压交直流电网[M].北京:中国电力出版社,2013:333-339.
[2]王华伟,蒋卫平,吴娅妮,等.云广±800 k V特高压直流工程逆变站最后断路器跳闸故障研究[J].电网技术,2008,32(18):6-9.WANG Huawei,JIANG Weiping,WU Yani,et al.Study on last break trip fault of inverter station in±800 k V UHVDC Project from Yunnan to Guangdong[J].Power System Technology,2008,32(18):6-9.
[3]曹俊龙,肖筱煜,邹荣盛.特高压直流输电工程中最后断路器策略的分析[J].湖北电力,2014,38(12):8-10.CAO Junlong,XIAO Xiaoyu,ZOU Rongsheng.Analysis of last breaker tripping strategy in HVDC project[J].Hubei Electric Power,2014,38(12):8-10.
[4]于海,曾丽丽,杨亚璞,等.基于图论的特高压直流工程最后断路器自适应判断策略[J].电力系统自动化,2016,40(5):121-126.YU Hai,ZENG Lili,YANG Yapu,et al.Adaptive strategy for the Last breaker in UHVDC project based on graph theory[J].Automation of Electric Power Systems,2016,40(5):121-126.
[5]RAHMAN M H,XU L,YAO L Z.Protection of large partitioned MTDC networks using DC-DC converters and circuit breakers[J].Protection and Control of Modern Power Systems,2016,1(1):170-178.DOI:10.1186/s41601-016-0030-0.
[6]贾轩涛,史博伦,胡锦根,等.永富直流三种功率输送方式在线转换直流过电压仿真研究[J].电力系统保护与控制,2017,45(5):131-138.JIA Xuantao,SHI Bolun,HU Jingen,et al.DC overvoltage simulation for online-switching of three power transmissin modes in Yongfu HVDC project[J].Power System Protection and Control,2017,45(5):131-138.
[7]刘毅力,贾轩涛,戴国安,等.永仁—富宁直流工程三种功率输送方式自动转换顺序控制及影响分析[J].电力系统保护与控制,2015,43(13):139-146.LIU Yili,JIA Xuantao,DAI Guoan,et al.Analysis of au-to-sequence control and influence of three power transmission modes in Yongren-Funing HVDC project[J].Power System Protection and Control,2015,43(13):139-146.
[8]李新,熊炬,董泉,等.基于母联断路器为跳闸对象的保护方案综述[J].电力系统保护与控制,2010,38(22):242-246.LI Xin,XIONG Ju,DONG Quan,et al.Summary of relay scheme which trips bus-tie[J].Power System Protection and Control,2010,38(22):242-246.
[9]郝文斌,夏春,王彪,等.一种基于图论搜索的限制短路电流分区方法[J].电力系统保护与控制,2015,43(17):35-44.HAO Wenbin,XIA Chun,WANG Biao,et al.A shortcircuit current limiting partitioning method based on graph theroy search[J].Power System Protection and Control,2015,43(17):38-44.
[10]田果,黄小莉,邓强.基于图论的智能配电网馈线保护研究[J].电力系统保护与控制,2015,43(16):95-99.TIAN Guo,HUANG Xiaoli,DENG Qiang.Feeder protection based on graph theory in smart distribution system[J].Power System Protection and Control,2015,43(16):95-99.
[11]冯雪平,梁英,郭炳庆.基于图论的含分布式电源配电网供电恢复动态规划方法[J].电力系统保护与控制.2012,40(9):24-29.FENG Xueping,LIANG Ying,GUO Bingqing.A dynamic programming method based on graph theory for restoration of distribution system with DGs[J].Power System Protection and Control,2012,40(9):24-29.
[12]苗世洪,马帅,尚亚男,等.基于割点和路径搜索的输电断面快速识别方法[J].电力系统自动化,2014,38(2):39-45.MIAO Shihong,MA Shuai,SHANG Yanan,et al.A fast recognition method of transmission section based on cut-vertex and path search[J].Automation of Electric Power Systems,2014,38(2):39-45.
[13]王阳,曾祥君,黎锐烽,等.基于图论的配电网故障行波定位新算法[J].电力系统自动化,2012,36(18):143-147.WANG Yang,ZENG Xiangjun,LI Ruifeng,et al.A travelling wave fault location algorithm for distribution network based on graph theory[J].Automation of Electric Power Systems,2012,36(18):143-147.
[14]周德才,张保会,姚峰,等.基于图论的输电断面快速搜索[J].中国电机工程学报,2006,26(12):32-38.ZHOU Dechai,ZHANG Baohui,YAO Feng,et al.Fast search for transmission section based on graph theory[J].Proceedings of the CSEE,2006,26(12):32-38.
[15]梅义,丘东元,张波.基于深度优先搜索的潜在电路计算机辅助分析法[J].中国电机工程学报,2008,28(24):75-81.MEI Yi,QIU Dongyuan,ZHANG Bo.Computer-aided sneak circuit analysis method based on depth-first search algorithm[J].Proceedings of the CSEE,2008,28(24):75-81.
[2]王华伟,蒋卫平,吴娅妮,等.云广±800 k V特高压直流工程逆变站最后断路器跳闸故障研究[J].电网技术,2008,32(18):6-9.WANG Huawei,JIANG Weiping,WU Yani,et al.Study on last break trip fault of inverter station in±800 k V UHVDC Project from Yunnan to Guangdong[J].Power System Technology,2008,32(18):6-9.
[3]曹俊龙,肖筱煜,邹荣盛.特高压直流输电工程中最后断路器策略的分析[J].湖北电力,2014,38(12):8-10.CAO Junlong,XIAO Xiaoyu,ZOU Rongsheng.Analysis of last breaker tripping strategy in HVDC project[J].Hubei Electric Power,2014,38(12):8-10.
[4]于海,曾丽丽,杨亚璞,等.基于图论的特高压直流工程最后断路器自适应判断策略[J].电力系统自动化,2016,40(5):121-126.YU Hai,ZENG Lili,YANG Yapu,et al.Adaptive strategy for the Last breaker in UHVDC project based on graph theory[J].Automation of Electric Power Systems,2016,40(5):121-126.
[5]RAHMAN M H,XU L,YAO L Z.Protection of large partitioned MTDC networks using DC-DC converters and circuit breakers[J].Protection and Control of Modern Power Systems,2016,1(1):170-178.DOI:10.1186/s41601-016-0030-0.
[6]贾轩涛,史博伦,胡锦根,等.永富直流三种功率输送方式在线转换直流过电压仿真研究[J].电力系统保护与控制,2017,45(5):131-138.JIA Xuantao,SHI Bolun,HU Jingen,et al.DC overvoltage simulation for online-switching of three power transmissin modes in Yongfu HVDC project[J].Power System Protection and Control,2017,45(5):131-138.
[7]刘毅力,贾轩涛,戴国安,等.永仁—富宁直流工程三种功率输送方式自动转换顺序控制及影响分析[J].电力系统保护与控制,2015,43(13):139-146.LIU Yili,JIA Xuantao,DAI Guoan,et al.Analysis of au-to-sequence control and influence of three power transmission modes in Yongren-Funing HVDC project[J].Power System Protection and Control,2015,43(13):139-146.
[8]李新,熊炬,董泉,等.基于母联断路器为跳闸对象的保护方案综述[J].电力系统保护与控制,2010,38(22):242-246.LI Xin,XIONG Ju,DONG Quan,et al.Summary of relay scheme which trips bus-tie[J].Power System Protection and Control,2010,38(22):242-246.
[9]郝文斌,夏春,王彪,等.一种基于图论搜索的限制短路电流分区方法[J].电力系统保护与控制,2015,43(17):35-44.HAO Wenbin,XIA Chun,WANG Biao,et al.A shortcircuit current limiting partitioning method based on graph theroy search[J].Power System Protection and Control,2015,43(17):38-44.
[10]田果,黄小莉,邓强.基于图论的智能配电网馈线保护研究[J].电力系统保护与控制,2015,43(16):95-99.TIAN Guo,HUANG Xiaoli,DENG Qiang.Feeder protection based on graph theory in smart distribution system[J].Power System Protection and Control,2015,43(16):95-99.
[11]冯雪平,梁英,郭炳庆.基于图论的含分布式电源配电网供电恢复动态规划方法[J].电力系统保护与控制.2012,40(9):24-29.FENG Xueping,LIANG Ying,GUO Bingqing.A dynamic programming method based on graph theory for restoration of distribution system with DGs[J].Power System Protection and Control,2012,40(9):24-29.
[12]苗世洪,马帅,尚亚男,等.基于割点和路径搜索的输电断面快速识别方法[J].电力系统自动化,2014,38(2):39-45.MIAO Shihong,MA Shuai,SHANG Yanan,et al.A fast recognition method of transmission section based on cut-vertex and path search[J].Automation of Electric Power Systems,2014,38(2):39-45.
[13]王阳,曾祥君,黎锐烽,等.基于图论的配电网故障行波定位新算法[J].电力系统自动化,2012,36(18):143-147.WANG Yang,ZENG Xiangjun,LI Ruifeng,et al.A travelling wave fault location algorithm for distribution network based on graph theory[J].Automation of Electric Power Systems,2012,36(18):143-147.
[14]周德才,张保会,姚峰,等.基于图论的输电断面快速搜索[J].中国电机工程学报,2006,26(12):32-38.ZHOU Dechai,ZHANG Baohui,YAO Feng,et al.Fast search for transmission section based on graph theory[J].Proceedings of the CSEE,2006,26(12):32-38.
[15]梅义,丘东元,张波.基于深度优先搜索的潜在电路计算机辅助分析法[J].中国电机工程学报,2008,28(24):75-81.MEI Yi,QIU Dongyuan,ZHANG Bo.Computer-aided sneak circuit analysis method based on depth-first search algorithm[J].Proceedings of the CSEE,2008,28(24):75-81.