一种母线综合后备保护装置
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摘要
针对110 k V环网运行方式,分析了传统保护配置方案存在的问题,并提出了一种母线综合后备保护装置。利用主变远后备保护动作跳母联的信号,提出了全新的110 k V线路综合后备保护,并将其与断路器失灵保护集成于一体,形成了完整的解决方案。该装置能够有效防止110 k V线路发生故障时因单重化线路保护装置拒动或者断路器失灵导致主变后备保护无选择性越级跳本侧断路器的问题,缩小停电范围,提高供电可靠性。仿真和试验结果表明了理论分析的正确性以及策略的有效性。
Aiming at the operation mode of 110 k V ring network,this paper analyzes the problems existing in the traditional protection configuration scheme,and advances a comprehensive backup protection device for busbar. The comprehensive backup protection of 110 k V line is proposed by using the bus connection breaker's trip signal of the transformer's far backup protection,and integrated with the failure protection of the circuit breaker to form a complete solution. When 110 k V line occurs faults,the device can effectively prevent the transformer backup protection' s no selective overstep tripping by current breaker because of the rejection of the single line protection device or the failure of the circuit breaker,reducing the power outage range and improving the reliability of the power supply. Results of simulation and prototype experiment verify the effectiveness of the proposed theory and control strategy.
Aiming at the operation mode of 110 k V ring network,this paper analyzes the problems existing in the traditional protection configuration scheme,and advances a comprehensive backup protection device for busbar. The comprehensive backup protection of 110 k V line is proposed by using the bus connection breaker's trip signal of the transformer's far backup protection,and integrated with the failure protection of the circuit breaker to form a complete solution. When 110 k V line occurs faults,the device can effectively prevent the transformer backup protection' s no selective overstep tripping by current breaker because of the rejection of the single line protection device or the failure of the circuit breaker,reducing the power outage range and improving the reliability of the power supply. Results of simulation and prototype experiment verify the effectiveness of the proposed theory and control strategy.
引文
[1]董红,马冠雄,翟世涛.广州220 k V电网典型网架结构选择初步探讨[J].广东电力,2016,29(8):7-10.DONG Hong,MA GuanXiong,ZHAI Shitao. Discussion on selection for typical grid structure of Guangzhou 220 k V power grid[J]. Guangdong Electric Power,2016,29(8):7-10.
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[6]李敏霞,袁文嘉,席小娟,等.一起主变零序保护越级跳闸事故分析与处理[J].电力系统保护与控制,2009,37(22):156-159.LI Minxia,YUAN Wenjia,XI Xiaojuan,et al. Analysis and countermeasure of leapfrog trip in main transformer zerosequence protection[J]. Power System Protection and Control,2009,37(22):156-159.
[7]童克诚,潘晨亮.二起线路复杂故障引起越级跳闸事故分析[J].科技创新导报,2015,12(6):71-72.TONG Kecheng,PAN Chenliang. Analysis of two override trip accidents caused by the line complex fault[J]. Science and Technology Innovation Herald,2015,12(6):71-72.
[8]周文,毛志强,毛志芳,等.一起线路接地故障引起机组主变保护误动的事故分析[J].电力系统保护与控制,2010,38(12):149-152.ZHOU Wen,MAO Zhiqiang,MAO Zhifang,et al. Analysis of the main transformer differential protection maloperation of generator units caused by single-phase ground fault[J]. Power System Protection and Control,2010,38(12):149-152.
[9]李立军,朱林,王剑. 110 k V双回线与其他线路在部分同塔情况下的跳闸分析[J].电力系统保护与控制,2010,38(9):80-83.LI Lijun,ZHU Lin,WANG Jian. Trip-out analysis of 110 k V double-circuit transmission lines and other lines partly on same tower[J]. Power System Protection and Control,2010,38(9):80-83.
[10]范黎敏.一起110 k V并行双回线保护误动浅析[J].浙江电力,2001(1):48-57.FAN Limin. Analysis on the protection misoperation of a parallel double circuit line[J]. Zhengjiang Electric Power,2001(1):48-57.
[11]朱景富.双回线并列运行方式对系统及保护定值的要求[J].继电器,2007,35(10):64-65.ZHU Jingfu. Condition of system and protection setting coordination by adopting double power fines parallel operation[J].Relay,2007,35(10):64-65.
[12]张振,李黄强,蒋蓉,等.含双回线路并列运行的110 k V电网继电保护整定计算方案探讨[J].湖北电力,2015,39(4):47-51.ZHANG Zhen,LI Huangqiang,JIANG Rong,et al. Discussion on relay setting calculation scheme for 110 k V power grid including double transmission lines parallel operation[J].Hubei Electric Power,2015,39(4):47-51.
[13]程钢,宋汉蓉,叶涛,等. 110 k V线路拒动故障分析及解决措施[J].水电能源科学,2012,30(11):162-166.CHENG Gang,SONG Hanrong,YE Tao,et al. Refuse operation fault analysis of 110 k V lines and its disposal measures[J]. Water Resources and Power,30(11):162-166.
[14]于雪雪,杨文辉,周红.一种改进的电网故障诊断解析模型研究[J].电工电气,2017(11):10-13.YU Xuexue,YANG Wenhui,ZHOU Hong. An improved analytical model for fault diagnosis in power grid[J]. Electrotechnics Electric,2017(11):10-13.
[15]付文竹.线路转换性故障造成的保护拒动原因分析与改进[J].电工技术,2009(11):57.FU Wenzhu. Analysis and improvement of protective action resistance caused by channeis switching malfuncion[J]. Electric Engineering,2009(11):57.
[16]索南加乐,王增超,张健康,等.基于参数识别的高阻接地距离保护算法[J].中国电机工程学报,2011,31(31):173-178.SUONAN Jiale,WANG Zengchao,ZHANG Jiankang,et al. A novel distance protection algorithm for high resistance grounding faults based on parameter identification[J]. Proceedings of the CSEE,2011,31(31):173-178.
[17]魏曜,张尧,张勇刚,等.一起高阻接地故障时线路差动保护拒动的分析及其改进研究[J].电力系统保护与控制,2014,42(2):127-131.WEI Yao,ZHANG Yao,ZHANG Yonggang,et al. An analysis and improvement of refusal-operation of line differential protection in high resistance grounding fault[J]. Power System Protection and Control,2014,42(2):127-131.
[18]李子龙,刘涛,黄胜强,等.基于泄放能量函数的配电网线路故障定位方法研究[J].智慧电力,2017,45(7):106-111.LI Zilong,LIU Tao,HUANG Shengqiang,et al. Research on fault location method of distribution network based on bleeder energy function[J]. Smart Power,2017,45(7):106-111.
[19]叶远波,谢民,王同文,等.用于非同步采样故障电流的极性比较式快速母线保护[J].智慧电力,2018,46(4):87-92.YE Yuanbo,XIE Min,WANG Tongwen,et al. Polarity comparison fast bus protection for non-synchronous sampling fault current[J]. Smart Power,2018,46(4):87-92.
[20]张保会,尹项根.电力系统继电保护[M].北京:中国电力出版社,2005.ZHANG Baohui,YIN Xianggen. Power system protective relaying[M]. Beijing:China Electric Power Press,2005.
[2]程一鸣,赵志辉,王天华,等.城市110 k V高压配电网接线方式研究[J].电网技术,2008,32(S2):45-48.CHENG Yiming,ZHAO Zhihui,WANG Tianhua,et al. Research on connection mode of civil 110 k V distribution network[J]. Power System Technology,2008,32(S2):45-48.
[3]刘柏私,谢开贵,张红云,等.高压配电网典型接线方式的可靠性分析[J].电网技术,2005,29(14):45-48.LIU Bosi,XIE Kaigui,ZHANG Hongyun,et al. Reliability analysis of typical connection modes in HV distribution network[J]. Power System Technology,2005,29(14):45-48.
[4]姚莉娜,张军利,刘华,等.城市中压配电网典型接线方式分析[J].电力自动化设备,2006,27(7):26-29.YAO Lina,ZHANG Junli,LIU Hua,et al. Analysis of typical connection modes of urban middle voltage distr ibution network[J]. Electric Power Automation Equipment,2006,27(7):26-29.
[5]舒逸石,王薇,韩光.一起主变低压侧线路故障引起越级跳闸故障分析[J].华中电力,2012,25(1):33-35.SHU Yishi,WANG Wei,HAN Guang. Analyzing a main transformer low voltage side line fault causing override trip accident[J]. Central China Electric Power,2012,25(1):33-35.
[6]李敏霞,袁文嘉,席小娟,等.一起主变零序保护越级跳闸事故分析与处理[J].电力系统保护与控制,2009,37(22):156-159.LI Minxia,YUAN Wenjia,XI Xiaojuan,et al. Analysis and countermeasure of leapfrog trip in main transformer zerosequence protection[J]. Power System Protection and Control,2009,37(22):156-159.
[7]童克诚,潘晨亮.二起线路复杂故障引起越级跳闸事故分析[J].科技创新导报,2015,12(6):71-72.TONG Kecheng,PAN Chenliang. Analysis of two override trip accidents caused by the line complex fault[J]. Science and Technology Innovation Herald,2015,12(6):71-72.
[8]周文,毛志强,毛志芳,等.一起线路接地故障引起机组主变保护误动的事故分析[J].电力系统保护与控制,2010,38(12):149-152.ZHOU Wen,MAO Zhiqiang,MAO Zhifang,et al. Analysis of the main transformer differential protection maloperation of generator units caused by single-phase ground fault[J]. Power System Protection and Control,2010,38(12):149-152.
[9]李立军,朱林,王剑. 110 k V双回线与其他线路在部分同塔情况下的跳闸分析[J].电力系统保护与控制,2010,38(9):80-83.LI Lijun,ZHU Lin,WANG Jian. Trip-out analysis of 110 k V double-circuit transmission lines and other lines partly on same tower[J]. Power System Protection and Control,2010,38(9):80-83.
[10]范黎敏.一起110 k V并行双回线保护误动浅析[J].浙江电力,2001(1):48-57.FAN Limin. Analysis on the protection misoperation of a parallel double circuit line[J]. Zhengjiang Electric Power,2001(1):48-57.
[11]朱景富.双回线并列运行方式对系统及保护定值的要求[J].继电器,2007,35(10):64-65.ZHU Jingfu. Condition of system and protection setting coordination by adopting double power fines parallel operation[J].Relay,2007,35(10):64-65.
[12]张振,李黄强,蒋蓉,等.含双回线路并列运行的110 k V电网继电保护整定计算方案探讨[J].湖北电力,2015,39(4):47-51.ZHANG Zhen,LI Huangqiang,JIANG Rong,et al. Discussion on relay setting calculation scheme for 110 k V power grid including double transmission lines parallel operation[J].Hubei Electric Power,2015,39(4):47-51.
[13]程钢,宋汉蓉,叶涛,等. 110 k V线路拒动故障分析及解决措施[J].水电能源科学,2012,30(11):162-166.CHENG Gang,SONG Hanrong,YE Tao,et al. Refuse operation fault analysis of 110 k V lines and its disposal measures[J]. Water Resources and Power,30(11):162-166.
[14]于雪雪,杨文辉,周红.一种改进的电网故障诊断解析模型研究[J].电工电气,2017(11):10-13.YU Xuexue,YANG Wenhui,ZHOU Hong. An improved analytical model for fault diagnosis in power grid[J]. Electrotechnics Electric,2017(11):10-13.
[15]付文竹.线路转换性故障造成的保护拒动原因分析与改进[J].电工技术,2009(11):57.FU Wenzhu. Analysis and improvement of protective action resistance caused by channeis switching malfuncion[J]. Electric Engineering,2009(11):57.
[16]索南加乐,王增超,张健康,等.基于参数识别的高阻接地距离保护算法[J].中国电机工程学报,2011,31(31):173-178.SUONAN Jiale,WANG Zengchao,ZHANG Jiankang,et al. A novel distance protection algorithm for high resistance grounding faults based on parameter identification[J]. Proceedings of the CSEE,2011,31(31):173-178.
[17]魏曜,张尧,张勇刚,等.一起高阻接地故障时线路差动保护拒动的分析及其改进研究[J].电力系统保护与控制,2014,42(2):127-131.WEI Yao,ZHANG Yao,ZHANG Yonggang,et al. An analysis and improvement of refusal-operation of line differential protection in high resistance grounding fault[J]. Power System Protection and Control,2014,42(2):127-131.
[18]李子龙,刘涛,黄胜强,等.基于泄放能量函数的配电网线路故障定位方法研究[J].智慧电力,2017,45(7):106-111.LI Zilong,LIU Tao,HUANG Shengqiang,et al. Research on fault location method of distribution network based on bleeder energy function[J]. Smart Power,2017,45(7):106-111.
[19]叶远波,谢民,王同文,等.用于非同步采样故障电流的极性比较式快速母线保护[J].智慧电力,2018,46(4):87-92.YE Yuanbo,XIE Min,WANG Tongwen,et al. Polarity comparison fast bus protection for non-synchronous sampling fault current[J]. Smart Power,2018,46(4):87-92.
[20]张保会,尹项根.电力系统继电保护[M].北京:中国电力出版社,2005.ZHANG Baohui,YIN Xianggen. Power system protective relaying[M]. Beijing:China Electric Power Press,2005.
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