一起220 kV断路器非全相保护误动事件分析及回路改进方法

doi:10.11985/2020.01.015

摘要/Abstract

摘要：

针对电力系统中频繁出现的断路器非全相保护误动作问题,以一起220 kV线路断路器本体非全相保护误动事件为例,深入分析保护误动的原因,并结合实际运维情况,在传统的断路器非全相保护回路的基础上,提出了基于断路器的三对常开常闭辅助触点的非全相保护回路改进方法。此方法能有效避免由于外部环境、开关辅助触点或继电器故障等因素引起的本体非全相保护误动。并以220 kV备用甲乙线断路器本体非全相保护回路为例进行验证,试验结果证明了该方法的有效性和可行性。

关键词: 非全相保护, 辅助触点, 继电器, 绝缘, 回路改进

Abstract:

Aiming at the malfunction problem of non-full-phase protection of circuit breaker which is frequently happens in the power system, taking the maloperation of non-full-phase protection of a 220 kV line circuit breaker as an example, the causes of maloperation of protection are analyzed in depth. Considering the actual operation and maintenance situation, an improvement method of non-full phase protection circuit based on three pairs of normally open and normally closed auxiliary contacts is proposed. This method is based on the traditional circuit breaker non-full phase protection circuit, which can effectively avoid the misoperation of non-full-phase protection caused by external environment, switching auxiliary contacts and relay faults. Taking a 220 kV standby line A and B circuit breaker body non-full phase protection circuit as an example, the method is proved to be effective and feasible by the experiment.

Key words: Non-full-phase protection, auxiliary contact, relay, insulation, circuit improvement

中图分类号:

TM77

张彬,林建雄,马永春. 一起220 kV断路器非全相保护误动事件分析及回路改进方法[J]. 电气工程学报, 2020, 15(1): 103-109.

ZHANG Bin,LIN Jianxiong,MA Yongchun. Analysis of a Maloperation Event of Non Full Phase Protection of 220 kV Circuit Breaker and the Method of Circuit Improvement[J]. Journal of Electrical Engineering, 2020, 15(1): 103-109.

图/表 11

图1

图2

图3

图4

图5

图6

表1

图7

图8

图9

表2

参考文献 14

[1]	韩颖, 冯厉鹏, 曹云东 , 等. 基于多物理场耦合的高压SF₆ 断路器冷气流混沌特性研究[J]. 电气工程学报, 2018,13(7):16-22.
	Han Ying, Feng Lipeng, Cao Yundong , et al. Investigation of chaotic characteristics for cold gas flow in high voltage SF₆ circuit breaker based on multi-physical field coupling[J]. Journal of Electrical Engineering, 2018,13(7):16-22.
[2]	李正红, 文小平 . 一起220 kV断路器单相拒合故障分析及防范措施[J]. 电力自动化设备, 2011,31(5):145-147,151.
	Li Zhenghong, Wen Xiaoping . Analysis of 220 kV circuit breaker single-phase closing failure and its countermeasures[J]. Electric Power Automation Equipment, 2011,31(5):145-147,151.
[3]	蒋苏静, 蒋国顺 . 220 kV断路器操作回路的优化配合研究[J]. 高压电器, 2013,49(11):88-93.
	Jiang Sujing, Jiang Guoshun . Optimized coordination of 220 kV circuit breaker’s operating circuit and its protective operation box[J]. High Voltage Apparatus, 2013,49(11):88-93.
[4]	吴世敏, 靳希, 吴文辉 , 等. 500 kV带高抗平行输电线路非全相谐振问题研究[J]. 电网与清洁能源, 2011,27(7):26-30.
	Wu Shimin, Jin Xi, Wu Wenhui , et al. Non-full phase resonance overvoltage for 500 kV transmission line with shunt reactors[J]. Power System and Clean Energy, 2011,27(7):26-30.
[5]	袁浩, 王琰, 倪益民 , 等. 高压线路保护非全相运行状态下的考虑[J]. 电力系统自动化, 2010,34(20):103-107.
	Yuan Hao, Wang Yan, Ni Yimin , et al. Considerations for high voltage line protection under open-pole operation[J]. Automation of Electric Power System, 2010,34(20):103-107.
[6]	杨韧, 汪金星, 陈琦 , 等. 一起330 kV SF₆高压断路器非全相运行原因分析[J]. 陕西电力, 2010,38(10):58-60.
	Yang Ren, Wang Jinxing, Chen Qi , et al. Reason analysis on 330 kV SF₆ high voltage circuit breaker open-phase running[J]. Shanxi Electric Power, 2010,38(10):58-60.
[7]	贺儒飞, 李荷婷 . 发电机机端断路器非全相保护新型判据的研究[J]. 电力系统保护与控制, 2018,46(17):165-170.
	He Rufei, Li Heting . Research on the new open-phase protection criterions of the generator circuit breaker[J]. Power System Protection and Control, 2018,46(17):165-170.
[8]	丁明安, 熊道兵, 刘震 . 一例断路器控制回路的改进[J]. 电力系统保护与控制, 2010,38(35):151-156.
	Ding Mingan, Xiong Daobing, Liu Zhen . Improvement of a circuit breaker control circuit[J]. Power System Protection and Control, 2010,38(35):151-156.
[9]	王志华, 郭明叙 . 断路器本体非全相保护装置故障分析及防范措施[J]. 南方电网技术, 2013,7(2):123-125.
	Wang Zhihua, Guo Mingxu . The fault analysis of circuit breaker open-phase protection device and related count- ermeasures[J]. Southern Power System Technology, 2013,7(2):123-125.
[10]	包雪铭, 吴刚, 许洁 . 一起断路器三相不一致保护误动事件的分析及改进[J]. 华东电力, 2014(12):2648-2650.
	Bao Xueming, Wu Gang, Xu Jie . Analysis and improvement of three-phase inconsistent protection misoperation accident for circuit breaker[J]. East China Electric Power, 2014(12):2648-2650.
[11]	江知瀚, 马迎新, 高旭 , 等. 断路器三相不一致保护可靠性分析及二次回路改进[J]. 电力系统自动化, 2017,41(11):169-172.
	Jiang Zhihan, Ma Yingxin, Gao Xu , et al. Reliability analysis and improvement of secondary circuit of three- phase inconsistent protection of circuit breakers[J]. Automation of Electric Power System, 2017,41(11):169-172.
[12]	于晓军, 刘志远, 于小艳 , 等. 基于双位置继电器构成的断路器非全相保护方法[J]. 电力系统保护与控制, 2018,46(1):138-142.
	Yu Xiaojun, Liu Zhiyuan, Yu Xiaoyan , et al. Method of three-phase inconsistent protection for breaker based on two-position relay[J]. Power System Protection and Control, 2018,46(1):138-142.
[13]	田传锋, 宋仁栋, 苏晟崴 . 断路器本体三相不一致保护回路优化的研究[J]. 电网与清洁能源, 2014,30(11):32-35.
	Tian Chuanfeng, Song Rendong, Su Shengwei . Study on three-phase inconsistent protection optimization of the circuit breaker[J]. Power System and Clean Energy, 2014,30(11):32-35.
[14]	黄远飞, 彭泽华 . 断路器本体三相不一致保护设计分析[J]. 南方电网技术, 2012,6(4):72-75.
	Huang Yuanfei, Peng Zehua . Analysis on the three-phase inconsistent protection design for circuit breaker body[J]. Southern Power System Technology Study, 2012,6(4):72-75.

继电器型号	常开接点	绝缘阻值/ MΩ	结果
C4-A40出口继电器K37	14-11	1 000	正常
	24-21	1 000	正常
	34-31	1 000	正常
	44-41	1 000	正常
C4-A40出口继电器K38	14-11	1 000	正常
	24-21	1 000	正常
	34-31	1 000	正常
	44-41	1 000	正常
C3-A30时间继电器K36	14-11	50	相对偏低
	24-21	1 000	正常
	34-31	400	正常

线路间隔	非全相继电器	额定电压/额定功率	保护验证			试验结果
线路间隔	非全相继电器	额定电压/额定功率	ABC相合位继电器励磁吸合	AB相合位 C相分位	监控是否有非全相保护动作报文	试验结果
220 kV 备用甲线	K36/K37/ K38	DC110 V/ 10 A	三相跳闸	三相跳闸	无	保护动作错误
220 kV 备用乙线	K36/K37/ K38	DC110 V/ 10 A	未跳闸	三相跳闸	有	保护动作正确

[1]	陈宇, 周腊吾, 丁婧, 翁小川, 尹恒, 邵敬平, 史晓蓉, 陈宇. 一种220 kV户外变电站支柱式绝缘子清扫系统^*[J]. 电气工程学报, 2020, 15(2): 54-60.
[2]	向奕同, 陈攀, 赵玉顺. 强风沙尘环境下车顶复合绝缘子薄弱环节与优化综述^*[J]. 电气工程学报, 2020, 15(2): 1-10.
[3]	李美, 王一玮, 李林, 郭鹏程. 绝缘气体对开关柜内部故障燃弧压力上升的影响^*[J]. 电气工程学报, 2020, 15(2): 11-17.
[4]	陶长志. 罐式断路器绝缘拉杆的受力分析及强度校核[J]. 电气工程学报, 2019, 14(3): 108-114.
[5]	吕新,于胜斌. 大容量变压器绝缘结构的研究[J]. 电气工程学报, 2019, 14(3): 115-118.
[6]	秦瑶,李忠华,孙云龙. 纳米炭黑/XLPE复合绝缘热老化特性试验研究 ^*[J]. 电气工程学报, 2019, 14(3): 33-40.
[7]	阮智玮,阚超豪,王垒. 盆式绝缘子温度场仿真分析 ^*[J]. 电气工程学报, 2019, 14(3): 41-46.
[8]	宋敏. 有限元分析在接触网绝缘子电场分析中的应用[J]. 电气工程学报, 2019, 14(2): 108-114.
[9]	杨松澎,吴坤远,孙成浩,黄泓贸,张楚岩. 特殊气候条件对硅橡胶表面憎水性能影响的试验研究 ^*[J]. 电气工程学报, 2019, 14(2): 17-23.
[10]	李静,许鹏娟,杨光,冯宇宁,付思. 盐密对污秽复合绝缘子电场与温度场的影响研究[J]. 电气工程学报, 2018, 13(7): 23-30.
[11]	李静,冯宇宁,刘骥陶,许鹏鹃. 500kV高压直流输电线离子流场对绝缘子电位分布特性影响[J]. 电气工程学报, 2018, 13(5): 21-26.
[12]	李忠华. 非线性绝缘电介质介电特性表征与测试[J]. 电气工程学报, 2018, 13(11): 11-20.
[13]	李忠华,张霞. 应力锥体增强绝缘非线性属性对HVDC电缆终端电场分布的影响[J]. 电气工程学报, 2018, 13(11): 37-43.
[14]	冉昭玉,杜伯学,李进,梁虎成,张程. 环氧复合材料表面电位衰减与直流电导特性[J]. 电气工程学报, 2018, 13(11): 65-70.
[15]	高有华,宋佳,杜翰文,高有锋,李延斌. VFTO对电力变压器绕组暂态电压分布的影响研究[J]. 电气工程学报, 2018, 13(10): 6-10.