变速抽水蓄能机组转子绕组内部短路故障保护

doi:10.11930/j.issn.1004-9649.202011097

中国电力 ›› 2021, Vol. 54 ›› Issue (12): 121-127,136.DOI: 10.11930/j.issn.1004-9649.202011097

变速抽水蓄能机组转子绕组内部短路故障保护

陈俊¹, 叶宏², 李华忠¹, 李建春¹, 陈晓刚³, 王凯¹

1. 南京南瑞继保电气有限公司, 江苏南京 211102;
2. 国网新源控股有限公司, 北京 100761;
3. 国网浙江省电力有限公司, 浙江杭州 310007

收稿日期:2020-11-23 修回日期:2021-07-29 出版日期:2021-12-05 发布日期:2021-12-16
作者简介:陈俊(1978-),男,博士研究生,高级工程师(研究员级),从事电气主设备继电保护研究,E-mail:chenj@nrec.com;叶宏(1968-),男,高级工程师,从事抽水蓄能电站自动化研究,E-mail:hong-ye@sgxy.sgcc.com.cn;李华忠(1983-),男,硕士,高级工程师,从事电气主设备继电保护研究,E-mail:lihz@nrec.com;李建春(1979-),男,硕士,工程师,从事特高压直流输电、柔性直流输电以及电力系统仿真技术研究,E-mail:lijc@nrec.com;陈晓刚(1980-),男,博士研究生,从事智能电网研究,E-mail:chen_xiaogang@zj.sgcc.com.cn;王凯(1983-),男,硕士,高级工程师,从事电气主设备继电保护研究,E-mail:wangkai3@nrec.com
基金资助:
国家电网有限公司科技项目（大型变速抽水蓄能机组关键技术自主化工程应用研究，521104180013）

Internal Short Circuit Protection for Rotor Winding of Variable Speed Pumped-Storage Generator-Motor

CHEN Jun¹, YE Hong², LI Huazhong¹, LI Jianchun¹, CHEN Xiaogang³, WANG Kai¹

1. NR Electric Co., Ltd., Nanjing 211102, China;
2. State Grid Xinyuan Co., Ltd., Beijing 100761, China;
3. State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310007, China

Received:2020-11-23 Revised:2021-07-29 Online:2021-12-05 Published:2021-12-16
Supported by:
This work is supported by Science and Technology Project of SGCC (Research on Independent Engineering Application and Key Technology of Large Variable Speed Pumped-Storage Unit, No.521104180013)

摘要/Abstract

摘要： 针对变速抽水蓄能机组转子绕组内部短路故障存在“弱保护”问题，提出一种基于定子侧分支环流的交流励磁电机转子绕组内部短路故障保护方法。根据多回路理论分析理论，从数字滤波器设计、保护判据、防误措施等方面研究了变速抽水蓄能机组转子绕组短路故障保护的关键技术，研制了保护样机，并搭建动模试验平台进行了验证。试验结果表明，该方法能可靠反映转子绕组匝间和相间短路故障，基于该原理的保护装置即将在国内某变速抽水蓄能机组上投入应用。

关键词: 变速抽水蓄能机组, 交流励磁, 转子绕组, 匝间短路, 相间短路

Abstract: To provide a solution to the imperfect protection problem of variable speed pumped-storage units when the rotor winding has internal short circuit faults, a stator-side branch circulation current based protection method is proposed for internal short circuit of AC excitation motor rotor winding. Based on the multi-loop theory, the key technologies for internal short circuit protection are studied in terms of digital filter design, protection criteria, error prevention measures. A protection prototype is developed and a dynamic simulation experiment platform is established for its verification. The experimental results show that the proposed method can reliably reflect the inter-turn and phase-phase short-circuit faults of the rotor winding. The protection devices developed based on the method will be applied in a variable speed pumped storage unit in China.

Key words: variable speed pumped storage unit, AC excitation, rotor winding, inter-turn short-circuit, phase-phase short-circuit

陈俊, 叶宏, 李华忠, 李建春, 陈晓刚, 王凯. 变速抽水蓄能机组转子绕组内部短路故障保护[J]. 中国电力, 2021, 54(12): 121-127,136.

CHEN Jun, YE Hong, LI Huazhong, LI Jianchun, CHEN Xiaogang, WANG Kai. Internal Short Circuit Protection for Rotor Winding of Variable Speed Pumped-Storage Generator-Motor[J]. Electric Power, 2021, 54(12): 121-127,136.

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https://www.electricpower.com.cn/CN/Y2021/V54/I12/121

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变速抽水蓄能机组转子绕组内部短路故障保护

Internal Short Circuit Protection for Rotor Winding of Variable Speed Pumped-Storage Generator-Motor

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变速抽水蓄能机组转子绕组内部短路故障保护

Internal Short Circuit Protection for Rotor Winding of Variable Speed Pumped-Storage Generator-Motor

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