考虑通信约束的区域保护分区策略及其实现技术
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摘要
基于区域电网多源信息的区域保护依赖于通信技术和通信基础,实现广域大电网分区域保护必须着眼于考虑通信约束的分区策略与实现。基于此目的,考虑对子站与主站通信影响最大的跳数因素,并结合分区域的均衡性,基于Floyd最短路径算法提出一种排列组合择优法的区域保护主站选取模型;进一步根据区域性保护通信时延的影响因素指标建立子站划分模型。针对分区域形成后发生N-1信道故障的情况,分析其子站通信迂回过程,考虑通信延时的影响对分区域策略进行修正。最后,基于图论技术提出了分区域策略的实现技术与方法。
The regional protection based on multi-source information of regional power grid depends on the communication technology and communication foundation,the implementation of regional protection of wide area power grid must be focused on the partitioning strategy and implementation considering communication constraints. Therefore,considering the number of hops between slave station and master station that has the greatest impact on the communication between slave station and master station,and combining the balance among regions,a regional protection master selection model adopting permutation and combinatorial optimization method is proposed based on Floyd shortest path algorithm. Furthermore,the slave station division model based on factors affecting the communication delay of regional protection is established. Aiming at the N-1 channel failure in the formed region,the detour process of slave station communication is analyzed,and the partitioning strategy is corrected considering the influence of communication delay. Finally,the implementation technology and method of partitioning strategy are proposed based on graph theory.
The regional protection based on multi-source information of regional power grid depends on the communication technology and communication foundation,the implementation of regional protection of wide area power grid must be focused on the partitioning strategy and implementation considering communication constraints. Therefore,considering the number of hops between slave station and master station that has the greatest impact on the communication between slave station and master station,and combining the balance among regions,a regional protection master selection model adopting permutation and combinatorial optimization method is proposed based on Floyd shortest path algorithm. Furthermore,the slave station division model based on factors affecting the communication delay of regional protection is established. Aiming at the N-1 channel failure in the formed region,the detour process of slave station communication is analyzed,and the partitioning strategy is corrected considering the influence of communication delay. Finally,the implementation technology and method of partitioning strategy are proposed based on graph theory.
引文
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[14] 蔡煜,蔡泽祥,王奕,等. 配电网广域保护控制通信网络建模与组网策略[J]. 电力自动化设备,2018,38(4):1-7.CAI Yu,CAI Zexiang,WANG Yi,et al. Modeling and networking strategy of wide area protection control communication network for distribution network[J]. Electric Power Automation Equipment,2018,38(4):1-7.
[15] 谢希仁. 计算机网络[M]. 5版. 北京:电子工业出版社,2008:22.
[16] 李振兴,尹项根,张哲,等. 分区域广域继电保护的系统结构与故障识别[J]. 中国电机工程学报,2011,31(28):95-103.LI Zhenxing,YIN Xianggen,ZHANG Zhe,et al. A system structure and fault identification of sub-area wide area relay protection[J]. Proceedings of the CSEE,2011,31(28):95-103.
[2] LIN Xiangning,ZHANG Rui,TONG Ning,et al. Regional protection scheme designed for low-voltage micro-grids[J]. International Journal of Electrical Power and Energy Sytems,2015(64):526-535.
[3] LI Zhenxing,MENG Xiaoxing,WANG Xin,et al. A wide-area relaying protection system based on multi-point measurement information[J]. IEEJ Transactions on Electrical and Electronic Engineering,2018,13(4):529-536.
[4] MA Jing,XIANG Xiaoqiang,ZHANG Runfeng. Regional protection scheme for distribution network based on logical information[J]. IET Generation Transmission and Distribution,2017,11(17):4314-4323
[5] OSMAN A H,HASSAN M S,SULAIMAN M. Communication-based adaptive protection for distribution systems penetrated with distributed generators[J]. Power System Protection and Control,2012,40(5):1-9.
[6] 尹项根,汪旸,张哲. 适应智能电网的有限广域继电保护分区与跳闸策略[J]. 中国电机工程学报,2010,30(7):1-7.YIN Xianggen,WANG Wei,ZHANG Zhe. Participation and tripping strategy of limited wide area relay protection adapted to smart grid[J]. Proceedings of the CSEE,2010,30(7):1-7.
[7] 马静,王希,王增平. 圆网格式保护区域交叠全覆盖分区新方法[J]. 电力自动化设备,2012,32(9):50-54.MA Jing,WANG Xi,WANG Zengping. A new method for overlapped full coverage sub-area in the protection of circular grids[J]. Elec-tric Power Automation Equipment,2012,32(9):50-54.
[8] 姜宪国,王增平,李琛,等. 区域自治式后备保护分区方案[J]. 电工技术学报,2013,23(1):234-241.JIANG Xianguo,WANG Zengping,LI Chen,et al. Zoning of regional autonomous reserve protection[J]. Transactions of China Electrotechnical Society,2013,23(1):234-241.
[9] 何志勤,张哲,尹项根,等. 集中决策式广域后备保护的分区模型与优化算法[J]. 电工技术学报,2014,29(4):212-219.HE Zhiqin,ZHANG Zhe,YIN Xianggen,et al. Zoning model and op-timization algorithm for centralized decision-making wide area backup protection[J]. Transactions of China Electrotechnical Socie-ty,2014,29(4):212-219.
[10] 孔德洪,吕飞鹏. 基于区域多信息融合的广域后备保护算法[J]. 电力系统保护与控制,2017,45(4):26-32.KONG Dehong,Lü Feipeng. Global area backup protection algo-rithm based on regional multi-information fusion[J]. Power System Protection and Control,2017,45(4):26-32.
[11] 和敬涵,王紫琪,张大海. 基于图论及模糊评价的广域后备保护分区方法[J]. 电力自动化设备,2017,37(2):75-82.HE Jinghan,WANG Ziqi,ZHANG Dahai. Zoning of wide area backup protection based on graph theory and fuzzy evaluation[J]. Electric Power Automation Equipment,2017,37(2):75-82.
[12] 马静,张涌新,项晓强,等. 基于保护动作信号的配电网区域保护方案[J]. 电力自动化设备,2018,38(3):34-41.MA Jing,ZHANG Yongxin,XIANG Xiaoqiang,et al. Regional protection scheme for distribution network based on protection action signals[J]. Electric Power Automation Equipment,2018,38(3):34-41.
[13] 熊小萍,谭建成,林湘宁. 基于MPLS的广域保护通信系统路由算法[J]. 电工技术学报,2013,28(6):257-263.XIONG Xiaoping,TAN Jiancheng,LIN Xiangning. Routing algorithm for wide area protection communication system based on MPLS[J]. Transactions of China Electrotechnical Society,2013,28(6):257-263.
[14] 蔡煜,蔡泽祥,王奕,等. 配电网广域保护控制通信网络建模与组网策略[J]. 电力自动化设备,2018,38(4):1-7.CAI Yu,CAI Zexiang,WANG Yi,et al. Modeling and networking strategy of wide area protection control communication network for distribution network[J]. Electric Power Automation Equipment,2018,38(4):1-7.
[15] 谢希仁. 计算机网络[M]. 5版. 北京:电子工业出版社,2008:22.
[16] 李振兴,尹项根,张哲,等. 分区域广域继电保护的系统结构与故障识别[J]. 中国电机工程学报,2011,31(28):95-103.LI Zhenxing,YIN Xianggen,ZHANG Zhe,et al. A system structure and fault identification of sub-area wide area relay protection[J]. Proceedings of the CSEE,2011,31(28):95-103.