大型发电机及其机端外接元件单相接地故障定位

doi:10.11930/j.issn.1004-9649.201910051

中国电力 ›› 2020, Vol. 53 ›› Issue (3): 119-125.DOI: 10.11930/j.issn.1004-9649.201910051

大型发电机及其机端外接元件单相接地故障定位

赵思腾¹, 桂林¹, 张琦雪², 王祥珩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

收稿日期:2019-10-14 修回日期:2019-11-08 发布日期:2020-03-10
作者简介:赵思腾(1996-),男,硕士研究生,从事发电机接地变优化设计研究,E-mail:zhaost18@mails.tsinghua.edu.cn;桂林(1974-),男,博士,副教授,从事大机组保护及故障分析研究,E-mail:guilin99@mails.tsinghua.edu.cn;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;王祥珩(1940-),男,博士,教授,从事电机分析与控制、电机故障及保护、电气传动及其自动化等研究,E-mail:wangxh@mail.tsinghua.edu.cn
基金资助:
国家自然科学基金资助项目（51277103）；中国广核集团公司科技项目（3100077009）

Ground Fault Location of Large Generator and External Components

ZHAO Siteng¹, GUI Lin¹, ZHANG Qixue², WANG Xiangheng¹

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

Received:2019-10-14 Revised:2019-11-08 Published:2020-03-10
Supported by:
This work is supported by National Natural Science Foundation of China (No.51277103), Science and Technology Project of China General Nuclear Power Group(No.3100077009)

摘要/Abstract

摘要： 为了区分大型发电机及其机端外接元件的单相接地故障，提出了一种基于零序方向判别原理的定位方案，将发电机及其机端外接元件划分为发电机本体、励磁变高压绕组、高厂变高压绕组和剩余外接元件4个区域，采用排除法依次排查并确定故障位置。该定位方案的关键在于机端零序电流和励磁变/高厂变高压侧零序电流的测量，需要结合故障区域选择不同的电流互感器。采用现场故障案例对所提定位方案进行了验证，表明该方案能够实现发电机及其外接元件接地故障的准确定位，缩短了故障检修时间，保证了发电机及时恢复供电。该故障定位方法具有推广应用价值。

关键词: 发电机, 机端外接元件, 接地故障定位, 零序方向判别原理, 排除法

Abstract: A fault location method is proposed to distinguish the ground faults of large generators and their external components. It divides the generator and its external components into four regions:the generator, the high-voltage winding of excitation transformer, the high voltage winding of unit auxiliary transformer, and the remaining external components. According to the zero-sequence direction discrimination principle, the exclusion method is used to check and determine the location of the fault. The key to this location method is to measure the zero-sequence current of generator terminal and high-voltage side of excitation transformer/unit auxiliary transformer. It's necessary to select the TA according to different regions where the fault occurs. The location method was verified by a series of real fault cases, which proved that the method can accurately locate the ground fault of the generator and its external components, with shortened troubleshooting time and in-time power recovery of the generator. The proposed fault location method has the value of popularization and application.

Key words: generator; external components, ground fault location, zero-sequence direction discrimination, exclusion method

赵思腾, 桂林, 张琦雪, 王祥珩. 大型发电机及其机端外接元件单相接地故障定位[J]. 中国电力, 2020, 53(3): 119-125.

ZHAO Siteng, GUI Lin, ZHANG Qixue, WANG Xiangheng. Ground Fault Location of Large Generator and External Components[J]. Electric Power, 2020, 53(3): 119-125.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.201910051

https://www.electricpower.com.cn/CN/Y2020/V53/I3/119

参考文献

[1] 王维俭. 电气主设备继电保护原理与应用[M]. 2版. 北京: 中国电力出版社, 2002: 223-245.
[2] 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.
[3] 殷林鹏, 桂林, 张琦雪, 等. 基于基波电势分布特征的大型发电机定子接地故障定位方法[J]. 电力自动化设备, 2019, 39(7): 141–146
YIN Linpeng, GUI Lin, ZHANG Qixue, et al. Stator grounding fault location method based on distribution characteristics of fundamental wave potential[J]. Electric Power Automation Equipment, 2019, 39(7): 141–146
[4] 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
[5] 高天云. 上海地区发电机组2007年度保护动作原因分析[J]. 中国电力, 2008, 41(5): 83–85
GAO Tianyun. Cause analysis on the protection action of fossil-fired power generation units in Shanghai area in 2007[J]. Electric Power, 2008, 41(5): 83–85
[6] 陈俊, 陈佳胜, 张琦雪, 等. 发电机机端电压互感器匝间短路导致定子接地保护动作分析[J]. 电力系统自动化, 2016, 40(10): 143–147
CHEN Jun, CHEN Jiasheng, ZHANG Qixue, et al. Operation analysis of stator earth protection due to voltage transformer inter-turn short-circuit at generator terminal[J]. Automation of Electric Power Systems, 2016, 40(10): 143–147
[7] 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
[8] 郑涛, 余青蔚, 詹荣荣, 等. 调相机接入对发电机失磁保护的影响[J]. 电力系统保护与控制, 2018, 46(4): 50–56
ZHENG Tao, YU Qingwei, ZHAN Rongrong, et al. Impact of synchronous condenser access on generator loss of excitation protection[J]. Power System Protection and Control, 2018, 46(4): 50–56
[9] 涂小涛, 张征平, 胡卫. 发电机出口电容器缺陷引起定子接地保护动作诊断方法[J]. 电力系统自动化, 2014, 38(24): 96–101
TU Xiaotao, ZHANG Zhengping, HU Wei. Rapid diagnostic method of stator ground fault caused by a faulty terminal capacitor[J]. Automation of Electric Power Systems, 2014, 38(24): 96–101
[10] 南东亮, 孙谊媊, 冯小萍, 等. 一起由PT故障引起基波定子接地保护动作的分析[J]. 智能电网, 2016, 4(5): 458–462
NAN Dongliang, SUN Yiqian, FENG Xiaoping, et al. Analysis of stator ground protection action caused by PT fault[J]. Smart Grid, 2016, 4(5): 458–462
[11] 赵淼, 赵文炎, 高自伟, 等. 电压互感器一次绕组匝间短路引起发电机运行异常的分析及处理[J]. 黑龙江电力, 2014, 36(2): 160–162, 166
ZHAO Miao, ZHAO Wenyan, GAO Ziwei, et al. Analysis and treatment of the abnormality of generator caused by potential transformer primary winding between-turns short circuit[J]. Heilongjiang Electric Power, 2014, 36(2): 160–162, 166
[12] 陈俊, 沈全荣. 扩大单元接线发电机定子接地保护方案[J]. 电力系统自动化, 2007, 31(24): 86–89
CHEN Jun, SHEN Quanrong. Study on stator earth fault protection of generator connected as expanding unit[J]. Automation of Electric Power Systems, 2007, 31(24): 86–89
[13] 谈涛, 陈俊, 王翔, 等. 零序方向元件选择性定子接地保护的分析[J]. 江苏电机工程, 2010, 29(5): 40–43
TAN Tao, CHEN Jun, WANG Xiang, et al. Calculation and analysis of selective stator earth fault protection based on the zero sequence direction elements[J]. Jiangsu Electrical Engineering, 2010, 29(5): 40–43
[14] 李振强, 吕艳萍, 张彦昌. 选择性定子单相接地保护方案浅析[J]. 大电机技术, 2007(3): 13–16
LI Zhenqiang, LU Yanping, ZHANG Yanchang. A fundamental research on stator single-phase earthing protection schemes[J]. Large Electric Machine and Hydraulic Turbine, 2007(3): 13–16
[15] 阎嫦玲, 王耀, 罗苏南, 等. 用于发电机保护的柔性全光纤电流互感器[J]. 电力自动化设备, 2017, 37(4): 191–196
YAN Changling, WANG Yao, LUO Sunan, et al. FFOCT for generator protection[J]. Electric Power Automation Equipment, 2017, 37(4): 191–196
[16] 桂林, 赵斌超, 王光, 等. 上电调相机内部故障分析及主保护配置方案优化设计[J]. 中国电力, 2017, 50(12): 33–37
GUI Lin, ZHAO Binchao, WANG Guang, et al. Internal fault analysis and optimization design of main protection scheme for Shanghai electric phase modifier[J]. Electric Power, 2017, 50(12): 33–37
[17] 桂林, 赵志强, 黄欢. 犍为发电机选择性定子接地保护方案研究[J]. 大电机技术, 2017(7): 83–87
GUI Lin, ZHAO Zhiqiang, HUANG Huan, et al. Study on the selective stator ground protection scheme of qianwei generator[J]. Large Electric Machine and Hydraulic Turbine, 2017(7): 83–87

大型发电机及其机端外接元件单相接地故障定位

Ground Fault Location of Large Generator and External Components

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 15

编辑推荐

Metrics

[1]	赵牧驰, 汪海蛟, 刘纯, 何国庆, 孙艳霞, 王盼盼. 汽轮机发电机组宽频带阻抗建模及次/超同步振荡分析[J]. 中国电力, 2024, 57(7): 238-246.
[2]	朱子民, 张锦芳, 常清, 周专, 张晓林. 大规模新能源接入弱同步支撑柔直系统的送端自适应VSG控制策略[J]. 中国电力, 2024, 57(5): 211-221.
[3]	成云朋, 李建华, 蔡寿国, 张学波, 王永, 陆晔, 朱瑛. 考虑损耗的永磁风力发电系统改进功率反馈法最大风能跟踪控制[J]. 中国电力, 2023, 56(10): 62-70.
[4]	郭小龙, 张江飞, 亢朋朋, 杨桂兴, 孙谊媊, 袁铁江, 刘勇. 含基于PI控制受端二次调频的特高压直流虚拟同步控制策略[J]. 中国电力, 2022, 55(11): 66-72.
[5]	朱溪, 曾博, 徐豪, 刘教民. 一种面向配电网负荷恢复力提升的多能源供需资源综合配置优化方法[J]. 中国电力, 2021, 54(7): 46-55.
[6]	陈欢乐, 归一数, 陈伟, 王阳, 卢宏林, 明磊. 基于加热器切除的深度调频控制技术研究与实施[J]. 中国电力, 2021, 54(3): 168-176.
[7]	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.
[8]	张义, 胡正阳, 彭佩佩, 陈宁, 唐冰婕, 高丙团. 基于极点配置的新能源并网附加阻尼控制策略[J]. 中国电力, 2021, 54(10): 217-222.
[9]	赵静波, 卫志农, 王晗雯, 解兵, 黄梅, 孟侠. 不确定量测下发电机动态状态估计性能分析[J]. 中国电力, 2020, 53(7): 149-159.
[10]	张学延, 屈杰, 何国安, 朱蓬勃, 姜广政, 潘渤. 大型汽轮发电机组非典型故障分析[J]. 中国电力, 2020, 53(12): 284-292,300.
[11]	仝声, 刘乐, 王鹏飞. 基于多变量广义预测控制算法的两级过热汽温协调联动控制[J]. 中国电力, 2020, 53(10): 215-223.
[12]	张伟骏, 陈文龙, 黄霆, 苏清梅, 林芳, 林济铿. 基于轨迹灵敏度的同步发电机参数辨识[J]. 中国电力, 2019, 52(9): 102-109.
[13]	伦涛, 鄂志君, 张利, 王鑫, 赵永亮, 严俊杰. 燃煤机组不同灵活性调节方案参与一次调频过程的经济性分析[J]. 中国电力, 2019, 52(8): 164-172.
[14]	姜锐, 滕伟, 刘潇波, 唐诗尧, 柳亦兵. 风电机组发电机轴承电腐蚀故障的分析诊断[J]. 中国电力, 2019, 52(6): 128-133.
[15]	王天堃. 基于神经网络模型及预测控制DMC的火电机组脱硝控制策略[J]. 中国电力, 2019, 52(12): 140-145.

模态框（Modal）标题

大型发电机及其机端外接元件单相接地故障定位

Ground Fault Location of Large Generator and External Components

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 15

编辑推荐

Metrics