基于母联功率方向的环网快速解列方法
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摘要
本文针对110kV环网运行方式下线路发生故障,线路保护因装置故障、原理失配、整定错误等原因拒动引起主变后备保护无选择性越级跳闸从而导致全站失压的问题,提出一种基于母联功率方向的环网快速解列方法,在主变保护动作1时限跳母联的同时,识别故障线路所属母线,并跳开相应母线上合环运行的线路断路器,防止全站失压,缩小停电范围。仿真结果表明,若不考虑环网两条线路保护同时拒动,则本文提出的环网快速解列方法适用于110kV环网运行方式下线路任意位置的任意类型故障。
When the operation of the 110kV ring network fails and the line protection is refused due to the failure of the device, the mismatch of the principle and the setting error, the main transformer backup protection may have no selective skip trip, resulting in total station voltage loss. To solve this problem, this paper proposes a fast method of ring network splitting based on the power direction of bus coupler. At the same time as the 1 time jumper of the main transformer protection action, the bus bar of the fault line is identified and the circuit breaker running on the corresponding loop of the bus bar is skid to prevent the whole station from losing voltage and reducing the power outage range. The simulation results show that the method proposed in this paper is suitable for any type of fault in any position of the 110kV loop network if not consider the protection of two lines in the ring network refuse at the same time.
When the operation of the 110kV ring network fails and the line protection is refused due to the failure of the device, the mismatch of the principle and the setting error, the main transformer backup protection may have no selective skip trip, resulting in total station voltage loss. To solve this problem, this paper proposes a fast method of ring network splitting based on the power direction of bus coupler. At the same time as the 1 time jumper of the main transformer protection action, the bus bar of the fault line is identified and the circuit breaker running on the corresponding loop of the bus bar is skid to prevent the whole station from losing voltage and reducing the power outage range. The simulation results show that the method proposed in this paper is suitable for any type of fault in any position of the 110kV loop network if not consider the protection of two lines in the ring network refuse at the same time.
引文
[1]麻秀范,丁宁,李龙.配电网重构中网络辐射形与连通性的判断[J].电工技术学报,2014,29(8):289-293.
[2]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, 26(7):26-29.
[3]冯力鸿.高压配网接线方式比较分析[J].电气技术,2013, 14(8):105-107.
[4]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.
[5]黄荣辉,张敏,周海廷,等.一起线路故障引起变压器后备保护动作的原因分析[J].电气技术,2015,16(8):134-135.
[6]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.
[7]李立军,朱林,王剑. 110kV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.
[8]张振,李黄强,蒋蓉,等.含双回线路并列运行的110kV电网继电保护整定计算方案探讨[J].湖北电力, 2015, 39(4):47-51.
[9]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.
[10]程钢,宋汉蓉,叶涛,等.110kV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.
[11]王雪.电力系统电磁环网解环研究[D].西安:西安理工大学, 2014.
[12]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.
[13]戴志辉,王增平,焦彦军,等.阶段式保护原理性失效风险的概率评估方法[J].电工技术学报,2012,27(6):175-182.
[14]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.
[15]何山,林湘宁,张锐,等.具有高阻接地故障辨识能力的和阻抗继电器[J].电工技术学报,2016,31(16):57-64.
[16]陈承,李春明,闫旭.输电线路高阻接地故障的建模研究[J].电气技术, 2014, 15(9):32-35, 40.
[2]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, 26(7):26-29.
[3]冯力鸿.高压配网接线方式比较分析[J].电气技术,2013, 14(8):105-107.
[4]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.
[5]黄荣辉,张敏,周海廷,等.一起线路故障引起变压器后备保护动作的原因分析[J].电气技术,2015,16(8):134-135.
[6]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.
[7]李立军,朱林,王剑. 110kV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.
[8]张振,李黄强,蒋蓉,等.含双回线路并列运行的110kV电网继电保护整定计算方案探讨[J].湖北电力, 2015, 39(4):47-51.
[9]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.
[10]程钢,宋汉蓉,叶涛,等.110kV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.
[11]王雪.电力系统电磁环网解环研究[D].西安:西安理工大学, 2014.
[12]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.
[13]戴志辉,王增平,焦彦军,等.阶段式保护原理性失效风险的概率评估方法[J].电工技术学报,2012,27(6):175-182.
[14]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.
[15]何山,林湘宁,张锐,等.具有高阻接地故障辨识能力的和阻抗继电器[J].电工技术学报,2016,31(16):57-64.
[16]陈承,李春明,闫旭.输电线路高阻接地故障的建模研究[J].电气技术, 2014, 15(9):32-35, 40.