基于分布式发电与配电自动化的复杂故障分析
|
摘要
含有分布式发电系统的电网中两段10kV母线相继发生故障,引起110kV主变低后备保护动作,进而导致10kV线路孤岛运行的复杂故障。基于变电站设备参数和保护配置,分析故障波形和安全自动装置动作逻辑,得出继电保护动作正确的结论。为避免类似情况发生,对于继电保护和安全自动装置整定提出检测分段开关遥信位置、分级切除两段母线和主变低后备保护联切分布式发电系统3种解决方案。
A complex fault of 10kV island operation is formed by the sequential failures causing 110kV main low backup protection action in the two 10kV distribution pow er systems. The fault w aveform and relay protection action logic are analyzed in terms of the substation equipment parameters and safety automatic device settings. The conclusion that the relay protection actions are correct is obtained. To avoid similar situations,three solutions are proposed for relay protection and safety automatic devices settings: detecting segmentation sw itch status,cutting off main bus in turn and isolating distributed generation system.
A complex fault of 10kV island operation is formed by the sequential failures causing 110kV main low backup protection action in the two 10kV distribution pow er systems. The fault w aveform and relay protection action logic are analyzed in terms of the substation equipment parameters and safety automatic device settings. The conclusion that the relay protection actions are correct is obtained. To avoid similar situations,three solutions are proposed for relay protection and safety automatic devices settings: detecting segmentation sw itch status,cutting off main bus in turn and isolating distributed generation system.
引文
[1]陈有双,陈福亮,柴子萱.降低10 k V线路故障停电次数[J].农村电气化,2018(6):57-58.
[2]丁俊.多条10 k V线路同时跳闸的原因及对应措施[J].电子技术与软件工程,2016(21):236.
[3]黄梅. 10 kV系统单相接地导致110 k V线路开关误跳的分析与处理[J].科技创新与应用,2015(26):209.
[4]梁自维.论10 k V线路故障的分析方法及防范措施[J].应用能源技术,2016(12):36-37.
[5]中华人民共和国国家发展和改革委员会. DL/T 584—20073 kV~110kV电网继电保护装置运行整定规程[S].北京:中国电力出版社,2008.
[6]崔其会,薄纯杰,李文亮,等. 10 kV配电线路保护定值的整定探讨[J].供用电,2009,26(6):32-34.
[7]刘健,张志华,张小庆,等.继电保护与配电自动化配合的配电网故障处理[J].电力系统保护与控制,2011,39(16):53-57.
[8]刘健,张小庆,张志华.继电保护配合提高配电自动化故障处理性能[J].电力系统保护与控制,2015,43(22):10-16.
[9]佘庆媛,沈沉,乔颖,等.电力系统低压减载和低频减载协调控制策略[J].电力系统自动化,2008,32(23):23-27.
[10]王世勇,孙健.分布式电源并网对配电网规划的影响研究[J].电气应用,2015,34(S1):21-24.
[11]谭瑾,刘国峰,郝丽丽,等.分布式电源并网对配电网电压的影响研究[J].电气应用,2018,37(6):12-17,24.
[12]高研,毕锐,杨为,等.分布式发电对配电网继电保护的影响[J].电网清洁能源,2009,25(4):20-23.
[2]丁俊.多条10 k V线路同时跳闸的原因及对应措施[J].电子技术与软件工程,2016(21):236.
[3]黄梅. 10 kV系统单相接地导致110 k V线路开关误跳的分析与处理[J].科技创新与应用,2015(26):209.
[4]梁自维.论10 k V线路故障的分析方法及防范措施[J].应用能源技术,2016(12):36-37.
[5]中华人民共和国国家发展和改革委员会. DL/T 584—20073 kV~110kV电网继电保护装置运行整定规程[S].北京:中国电力出版社,2008.
[6]崔其会,薄纯杰,李文亮,等. 10 kV配电线路保护定值的整定探讨[J].供用电,2009,26(6):32-34.
[7]刘健,张志华,张小庆,等.继电保护与配电自动化配合的配电网故障处理[J].电力系统保护与控制,2011,39(16):53-57.
[8]刘健,张小庆,张志华.继电保护配合提高配电自动化故障处理性能[J].电力系统保护与控制,2015,43(22):10-16.
[9]佘庆媛,沈沉,乔颖,等.电力系统低压减载和低频减载协调控制策略[J].电力系统自动化,2008,32(23):23-27.
[10]王世勇,孙健.分布式电源并网对配电网规划的影响研究[J].电气应用,2015,34(S1):21-24.
[11]谭瑾,刘国峰,郝丽丽,等.分布式电源并网对配电网电压的影响研究[J].电气应用,2018,37(6):12-17,24.
[12]高研,毕锐,杨为,等.分布式发电对配电网继电保护的影响[J].电网清洁能源,2009,25(4):20-23.