大型水轮发电机消弧线圈接地方式下的注入式定子接地保护新方案

doi:10.11930/j.issn.1004-9649.202010102

中国电力 ›› 2021, Vol. 54 ›› Issue (12): 112-120.DOI: 10.11930/j.issn.1004-9649.202010102

大型水轮发电机消弧线圈接地方式下的注入式定子接地保护新方案

周烺¹, 刘建政¹, 张琦雪², 钟波³, 桂林¹

1. 电力系统及发电设备控制和仿真国家重点实验室（清华大学电机系），北京 100084;
2. 南京南瑞继保电气有限公司，江苏南京 211102;
3. 天生桥二级水力发电有限公司天生桥水力发电总厂，贵州兴义 562400

收稿日期:2020-10-26 修回日期:2021-03-04 出版日期:2021-12-05 发布日期:2021-12-16
作者简介:周烺(1996-),男,硕士研究生,从事大型发电机定子接地保护研究,E-mail:zhoulang_1996@163.com;刘建政(1961-),男,副教授,从事电力电子变流器技术、柔性输配电技术等研究,E-mail:liujianzheng@263.net;张琦雪(1974-),男,博士,高级工程师(研究员级),从事电厂继电保护及自动化装置研发工作,E-mail:zhangqx@nrec.com
基金资助:
国家自然科学基金资助项目(电容电流剧增条件下大型发电机定子接地故障分析与优化设计研究，52077115)

A New Method for Stator Ground Fault Protection with Voltage Injection on Large Hydro Generators Grounded by Arc Suppression Coils

ZHOU Lang¹, LIU Jianzheng¹, ZHANG Qixue², ZHONG Bo³, GUI Lin¹

1. State Key Laboratory of Control and Simulation of Power System and Generation Equipments(Department of Electrical Engineering, Tsinghua University), Beijing 100084, China;
2. NR Electric Co., Ltd., Nanjing 211102, China;
3. Tianshengqiao Hydropower Plant, Tianshengqiao II Hydropower Co., Ltd., Xingyi 562400, China

Received:2020-10-26 Revised:2021-03-04 Online:2021-12-05 Published:2021-12-16
Supported by:
This work is supported by National Natural Science Foundation of China (Research on Stator Ground Fault Analysis and Optimal Design of Large Generator under Condition of Capacitance Current Increasing Rapidly, No.52077115)

摘要/Abstract

摘要： 在中性点经消弧线圈接地的大型水轮发电机的定子接地保护中，从消弧线圈附带的仪表线圈注入20 Hz信号是一种常规方案。为了提升保护效果并克服大型水轮发电机定子绕组对地电容增大带来的困难，提出了一种从消弧线圈串接电阻两端注入20 Hz信号的新方案。与常规方案对比，分析了应用新方案时从注入端口看进去的20 Hz等值电路，研究了相应的接地故障过渡电阻计算方法。以天生桥二级水电站发电机为研究对象，参照其消弧线圈的参数定制了试验专用消弧线圈，并在动模发电机上进行了定子接地故障试验，检验了2种保护方案的效果。动模试验结果表明，新方案相比常规方案，接地故障过渡电阻测量最大值由5.6 kΩ提高到20 kΩ，测量误差在±6%以内。

关键词: 大型发电机, 定子接地保护, 注入式, 消弧线圈, 过渡电阻

Abstract: For stator ground fault protection of large hydro-generators grounded with arc suppression coil at neutral point, the conventional method is to inject 20 Hz signal from the instrument coil attached to the arc suppression coil. In order to improve the effect of the protection and to overcome the difficulties caused by the increase of stator-to-ground capacitance, a new method is proposed to inject the 20 Hz signal from the resistor in series with the arc suppression coil. The proposed method is compared with the conventional one in terms of the 20 Hz equivalent circuit viewed from the injection port, and the corresponding calculation method for transition resistance is also studied. Taking a generator of Tianshengqiao-Ⅱ Hydro Power Station as the research object, an arc suppression coil based on the parameters of the real generators’ arc suppression coil is customized for test, and the stator ground fault experiment is conducted on a dynamic simulation generator to test the effectiveness of the two methods. The results of the experiment show that, compared with the conventional method, the proposed new method has the maximum measured ground fault transition resistance increasing from 5.6 kΩ to 20 kΩ with an error within ±6%.

Key words: large generator, stator ground fault protection, voltage injection, arc suppression coil, transition resistance

周烺, 刘建政, 张琦雪, 钟波, 桂林. 大型水轮发电机消弧线圈接地方式下的注入式定子接地保护新方案[J]. 中国电力, 2021, 54(12): 112-120.

ZHOU Lang, LIU Jianzheng, ZHANG Qixue, ZHONG Bo, GUI Lin. A New Method for Stator Ground Fault Protection with Voltage Injection on Large Hydro Generators Grounded by Arc Suppression Coils[J]. Electric Power, 2021, 54(12): 112-120.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202010102

https://www.electricpower.com.cn/CN/Y2021/V54/I12/112

参考文献

[1] 王维俭. 电气主设备继电保护原理与应用[M]. 北京: 中国电力出版社, 1996.
[2] 王维俭, 王祥珩, 王赞基. 大型发电机变压器内部故障分析与继电保护[M]. 北京: 中国电力出版社, 2006.
[3] 王维俭. 发电机变压器继电保护应用[M]. 2版. 北京: 中国电力出版社, 2005.
[4] 王维俭, 徐振宇, 张振华. 大型发电机定子单相接地保护的研讨[J]. 继电器, 1999, 27(4): 6–9
WANG Weijian, XU Zhenyu, ZHANG Zhenhua. Research and discussion on single-phase earth protection of large generator stator[J]. Relay, 1999, 27(4): 6–9
[5] 李德佳, 毕大强, 王维俭. 大型发电机注入式定子单相接地保护的调试和运行[J]. 继电器, 2004, 32(16): 51–56
LI Dejia, BI Daqiang, WANG Weijian. Adjustment and operation of injection voltage scheme against the stator single-phase-to-ground fault of large generators[J]. Relay, 2004, 32(16): 51–56
[6] 黄路明, 熊锋, 巫晓云, 等. 基于注入信号的发电机定子对地电容测量方法[J]. 电力科学与技术学报, 2021, 36(2): 83–88
HUANG Luming, XIONG Feng, WU Xiaoyun, et al. Real-time measurement scheme of large-scale generator stator winding to ground capacitance[J]. Journal of Electric Power Science and Technology, 2021, 36(2): 83–88
[7] 毕大强, 王祥珩, 余高旺, 等. 高准确度外加20 Hz电源定子单相接地保护的研制[J]. 电力系统自动化, 2004, 28(16): 75–78
BI Daqiang, WANG Xiangheng, YU Gaowang, et al. Development of a high accuracy stator ground fault protection by injecting 20 Hz voltage[J]. Automation of Electric Power Systems, 2004, 28(16): 75–78
[8] 张琦雪, 席康庆, 陈佳胜, 等. 大型发电机注入式定子接地保护的现场应用及分析[J]. 电力系统自动化, 2007, 31(11): 103–107
ZHANG Qixue, XI Kangqing, CHEN Jiasheng, et al. Field application and analysis of the stator earth fault protection with voltage injection for large-sized generator[J]. Automation of Electric Power Systems, 2007, 31(11): 103–107
[9] 张琦雪, 陈佳胜, 陈俊, 等. 大型发电机注入式定子接地保护判据的改进[J]. 电力系统自动化, 2008, 32(3): 66–69
ZHANG Qixue, CHEN Jiasheng, CHEN Jun, et al. Improvement on criterions of stator earth fault protection with voltage injection for large-sized generators[J]. Automation of Electric Power Systems, 2008, 32(3): 66–69
[10] 凌洪政, 韩海彦, 陈佳胜, 等. 注入式定子接地保护在大型水电机组上的应用分析[J]. 红水河, 2009, 28(4): 80–83
LING Hongzheng, HAN Haiyan, CHEN Jiasheng, et al. Application and analysis of injection-type stator earth fault protection for large hydroelectric unit[J]. Hongshui River, 2009, 28(4): 80–83
[11] 刘亚东, 王增平, 苏毅, 等. 注入式定子接地保护的现场试验、整定和分析[J]. 电力自动化设备, 2012, 32(10): 150–154
LIU Yadong, WANG Zengping, SU Yi, et al. Field test, setting and analysis of injecting source-based stator grounding protection[J]. Electric Power Automation Equipment, 2012, 32(10): 150–154
[12] 王增平, 刘亚东, 苏毅, 等. 注入式定子接地保护接地变压器参数影响及改进方案[J]. 电力系统自动化, 2013, 37(13): 109–113
WANG Zengping, LIU Yadong, SU Yi, et al. An improved scheme of injecting source-based stator ground fault protection considering influence of grounding transformer parameters[J]. Automation of Electric Power Systems, 2013, 37(13): 109–113
[13] 伍利, 彭金宁, 姚李孝, 等. 大型发电机组注入式定子接地保护调试与整定[J]. 中国电力, 2013, 46(9): 92–95, 106
WU Li, PNEG Jinning, YAO Lixiao, et al. Commissioning and setting of voltage-injection stator ground fault protection for large-sized generator[J]. Electric Power, 2013, 46(9): 92–95, 106
[14] 任小超, 王秋晨, 刘照友. 大型发电机20Hz电源注入式定子接地保护改进研究[J]. 云南水力发电, 2018, 34(3): 51–54
REN Xiaochao, WANG Qiuchen, LIU Zhaoyou. Study on improvement of the 20 Hz power supply injection type stator grounding protection for a large power generator[J]. Yunnan Water Power, 2018, 34(3): 51–54
[15] 朱宇聪, 包明磊, 李玉平, 等. 注入式定子接地保护现场试验、分析及建议[J]. 华电技术, 2019, 41(8): 38–43
ZHU Yucong, BAO Minglei, LI Yuping, et al. Field test, analysis and recommendations for injection stator grounding protection[J]. Huadian Technology, 2019, 41(8): 38–43
[16] 游建宏, 林鑫, 陈首羽, 等. 大型发电机组注入式定子接地保护原理与调试维修[J]. 电工技术, 2019(10): 66–67, 70
YOU Jianhong, LIN Xin, CHEN Shouyu, et al. Principle, debugging and maintenance of stator ground fault protection with voltage injection for large generators[J]. Electric Engineering, 2019(10): 66–67, 70
[17] 刘春秋, 葛宝明, 毕大强. 20 Hz注入式定子接地保护在扩大单元接线发电机组上的应用[J]. 电力系统保护与控制, 2011, 39(3): 40–45
LIU Chunqiu, GE Baoming, BI Daqiang. Application of injecting 20 Hz source-based stator ground fault protection for generators in expanded unit connection[J]. Power System Protection and Control, 2011, 39(3): 40–45
[18] 陈佳胜, 张琦雪, 陈俊, 等. 基于分段相角补偿的注入式定子接地保护方法[J]. 现代电力, 2014, 31(1): 79–82
CHEN Jiasheng, ZHANG Qixue, CHEN Jun, et al. Stator earth fault protection with voltage injection based on multi-stage phase compensation[J]. Modern Electric Power, 2014, 31(1): 79–82
[19] 陈佳胜, 张琦雪, 郭自刚, 等. 核电机组注入式定子接地保护若干问题探讨[J]. 电力自动化设备, 2016, 36(10): 172–175
CHEN Jiasheng ZHANG Qixue, GUO Zigang, et al. Discussion on injection-type stator grounding protection of nuclear power generator[J]. Electric Power Automation Equipment, 2016, 36(10): 172–175
[20] 毕大强. 大型水轮发电机定子绕组单相接地故障及保护方案的研究[D]. 北京: 清华大学, 2003.
BI Daqiang. Studies on stator ground fault and its protection for large-sized hydro-generators[D]. Beijing: Tsinghua University, 2003.
[21] 张琦雪, 王祥珩, 陈佳胜, 等. 组合型接地方式对注入式定子接地保护的影响[J]. 中国电力, 2018, 51(11): 96–103
ZHANG Qixue, WANG Xiangheng, CHEN Jiasheng, et al. Influence of the combination-type grounding scheme on voltage-injected stator ground fault protection[J]. Electric Power, 2018, 51(11): 96–103
[22] 毕大强, 王祥珩, 余高旺, 等. 消弧线圈接地方式下外加20Hz电源定子接地保护的应用[J]. 电力系统自动化, 2005, 29(4): 82–84
BI Daqiang, WANG Xiangheng, YU Gaowang, et al. Application of injecting 20 Hz voltage based ground fault protection for generators grounded via petersen-coil[J]. Automation of Electric Power Systems, 2005, 29(4): 82–84
[23] 陈乔夫, 李湘生. 互感器电抗器的理论与计算[M]. 武汉: 华中理工大学出版社, 1992.
[24] 毕大强, 王祥珩, 王维俭. 发电机中性点经消弧线圈谐振方式接地中串联电阻对定子单相接地保护的影响[J]. 继电器, 2001, 29(11): 5-8.
BI Daqiang, WANG Xiangheng, WANG Weijian. Effects of series resistance on stator ground fault protection of large-capacity generator by resonant neutral grounding[J]. 2001, 29(11): 5-8.

大型水轮发电机消弧线圈接地方式下的注入式定子接地保护新方案

A New Method for Stator Ground Fault Protection with Voltage Injection on Large Hydro Generators Grounded by Arc Suppression Coils

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 9

编辑推荐

Metrics

[1]	曹赋禄, 赵晋斌, 潘超, 毛玲, 屈克庆. 基于DFFT的低压直流线路主动式接地故障定位方法[J]. 中国电力, 2023, 56(4): 184-191.
[2]	刘映彤, 黄纯, 袁静泊, 闫森. 谐振接地系统两点同相接地故障暂态特征及选线[J]. 中国电力, 2022, 55(10): 62-70.
[3]	朱占春, 闻生学, 唐金锐, 冉荣华, 袁成清, 杨华林, 牟华, 邓从中. 计及配电线路参数影响的有源消弧算法分析与改进[J]. 中国电力, 2021, 54(3): 149-158.
[4]	张琦雪, 王祥珩, 陈佳胜, 徐天乐, 李华忠, 王光, 陈俊. 组合型接地方式对注入式定子接地保护的影响[J]. 中国电力, 2018, 51(11): 96-103.
[5]	琚永安, 刘聪, 单汝涛, 谭文刚, 王飞, 倪春雷. 消弧线圈接地系统单相断线故障的辨识与定位[J]. 中国电力, 2017, 50(8): 113-117.
[6]	李振动, 李代君, 臧斌, 尚东慧, 石鑫. 一起串联补偿线路跳闸故障的分析[J]. 中国电力, 2014, 47(7): 81-85.
[7]	苗晓鹏, 文振江, 李晓波, 赵国栋. 基于零序电压定相比幅的消弧线圈调谐新方法[J]. 中国电力, 2014, 47(3): 116-119.
[8]	伍利, 彭金宁, 姚李孝, 南海鹏. 大型发电机组注入式定子接地保护调试与整定[J]. 中国电力, 2013, 46(9): 92-95.
[9]	杨志, 龙国庆. 混合冷却方案在大型湿冷发电机组中的应用探讨[J]. 中国电力, 2013, 46(7): 39-42.

模态框（Modal）标题

大型水轮发电机消弧线圈接地方式下的注入式定子接地保护新方案

A New Method for Stator Ground Fault Protection with Voltage Injection on Large Hydro Generators Grounded by Arc Suppression Coils

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 9

编辑推荐

Metrics