[1]史常凯,符金伟,尹 惠,等.故障指示器录波误差分析方法研究[J].电瓷避雷器,2020,(03):182-190.[doi:10.16188/j.isa.1003-8337.2020.03.029]
 SHI Changkai,FU Jinwei,YI Hui,et al.Research on Analysis Method of Recording Error of Fault Indicator[J].,2020,(03):182-190.[doi:10.16188/j.isa.1003-8337.2020.03.029]
点击复制

故障指示器录波误差分析方法研究()
分享到:

《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年03期
页码:
182-190
栏目:
避雷器
出版日期:
2020-06-25

文章信息/Info

Title:
Research on Analysis Method of Recording Error of Fault Indicator
作者:
史常凯1 符金伟1 尹 惠1 高 源2 李景丽3 赵子敬3 刘 鹏3
(1.中国电力科学研究院有限公司, 北京 100192; 2.国网福建省电力有限公司电力科学研究院, 福州 350007; 3. 郑州大学电气工程学院, 郑州 450001)
Author(s):
SHI Changkai1 FU Jinwei1 YI Hui1 GAO Yuan2 LI Jingli3 ZHAO Zijing3 LIU Peng3
(1.China Electric Power Research Institute, Beijing 100192, China; 2.State Grid Fujian Electric Power Research Institute, Fuzhou 350007, China; 3.College of Electrical Engineering, Zhengzhou 450001, China)
关键词:
故障指示器 录波装置 录波误差 误差分析 故障条件
Keywords:
fault indicator recording device recording error error analysis fault condition
DOI:
10.16188/j.isa.1003-8337.2020.03.029
摘要:
配电网故障指示器录波装置的录制波形与实际故障波形之间的误差是影响小电流接地系统单相接地故障选线和定位的准确性的重要因素。采用Matlab/simulink建立具有五回出线的典型10 kV配网小电流接地系统模型; 提取典型单相接地故障时不同采样频率录波装置的对暂态零序电流的录制波形,对比录制波形与标准波形数据,提出能全面反映波形偏差的首峰值斜率误差和加权斜率和误差等误差指标; 并分析不同接地过渡电阻、故障点距离、故障时刻相角等因素下,录波装置采样频率对配网故障指示器录波误差指标的影响规律。计算结果表明:首峰值斜率作为误差指标时,随着采样频率的改变,误差变化呈现出的规律不明显,加权斜率和误差与暂态峰值误差均随着采样频率的增加而下降; 相同采样频率下,误差均随着过渡电阻与故障相角增加而增加,随着故障距离的增加而减少; 暂态峰值作为误差指标时,任意故障条件下,采样频率达到6 kHz时,误差均在10%以内。
Abstract:
The error between the recorded waveform and the actual fault waveform of the fault indicator recording device of the distribution network is an important factor affecting the accuracy of single-phase ground fault line selection and location in small current grounding systems. The author uses Matlab / simulink to establish a typical 10kV distribution network small current grounding system model with five outgoing lines; extracts the recording waveforms of transient zero-sequence current from different sampling frequency recording devices during typical single-phase ground faults, and compares the recorded waveforms with the standard Waveform data, put forward error indicators such as the first peak slope error and weighted slope and error that can fully reflect the deviation of the waveform; and analyze the factors such as different grounding transition resistance, distance between fault points, and phase angle at the moment of failure. The influence law of the fault indicator's recording error index. The calculation results show that when the slope of the first peak is used as the error index, as the sampling frequency changes, the regularity of the error change is not obvious. The weighted slope and error and the transient peak error all decrease with the increase of the sampling frequency; the same sampling frequency The error increases with the increase of the phase angle of the transition resistance and the fault, and decreases with the increase of the fault distance. When the transient peak is used as the error index, the error is within 10% when the sampling frequency reaches 6 kHz under any fault condition.

参考文献/References:

[1] 李振强,彭庆华,李辉,等. 国家电网公司小电流接地情况及故障处理技术[J]. 供用电,2017, 34(5):1-6.
LI Zhenqiang, PENG Qinghua, LI Hui, et al. Small current grounding system presentation and fault processing technology of state grid[J]. Distribution & Utilization, 2017, 34(5): 1-6.
[2]张志霞.小电流接地系统单项接地故障选线理论研究[M].辽宁:辽宁科学技术出版社,2014.
[3]李克文,张大立,吴丽芳,等. 配电线路故障指示器检测系统的研发[J]. 广西电力,2015, 38(1):20-23.
LI Kewen, ZHANG Dali, WU Lifang, et al. Development of distribution line fault indicator testing system[J]. Guangxi Electric Power, 2015, 38(1): 20-23.
[4]田庆生,梁仕斌,程干江,等. 10 kV配电网故障指示器仿真测试平台设计[J]. 云南电力技术,2016, 44(6):57-60.
TIAN Qingsheng, LIANG Shibin, CHENG Ganjiang, et al. Design of testing platform for fault indicator in 10 kV distribution network[J]. Yunnan Electric Power, 2016, 44(6): 57-60.
[5]武江斌,张彦兵. 配电线路故障指示器检测平台的设计研究[J]. 电力学报,2018, 33(2):128-133.
WU Jiangbin, ZHANG Yanbing. Design and research of distribution line fault indicator detection platform[J]. Journal of Electric Power, 2018, 33(2): 128-133.
[6]李敏昱,杨振中,杨耿杰. 配电网馈线故障指示器检测平台设计方案[J]. 电工电气,2013(5):50-54.
LI Minyu, YANG Zhenzhong, YANG Gengjie. Design scheme of feeder fault indicator detection platform for distribution network[J]. Electrical Engineering, 2013(5): 50-54.
[7]董春晨,杨成飞,师同彦. 配电线路故障指示器在配电自动化建设中的应用分析[J]. 电工技术,2019(14):41-42.
DONG Chunchen, YANG Chengfei, SHI Tongyan. Application analysis of distribution line fault indicators in distribution automation construction[J]. Electric Engineering, 2019(14): 41-42.
[8]符金伟,史常凯,范闻博,等. 配电线路接地故障波形特征分析与研究[J]. 电力设备管理,2019(4):31-35.
FU Jinwei, SHI Changkai, FAN Wenbo, et al. Analysis and research on waveform characteristics of ground fault in distribution lines[J]. Power Equipment Management, 2019(4): 31-35.
[9]冷华,唐海国,郭文明,等. 配网线路故障指示器功能检测及案例分析[C].CIGREC6中国委员会2016年工作会议暨2016配电技术研讨会,2016:125-130.
[10]王庭华,薛永端,赵雪霖,等. 不同接地电阻下消弧线圈接地系统接地故障暂态特征[J]. 电力系统及其自动化学报,2019, 31(9):43-51.
WANG Tinghua, XUE Yongduan, ZHAO Xuelin, et al. Ground fault transient characteristics of arc suppression coil grounding system with different grounding resistance[J]. Proceedings of the CSU-EPSA, 2019, 31(9): 43-51.
[11][薛永端,李娟,徐丙垠. 中性点经消弧线圈接地系统小电流接地故障暂态等值电路及暂态分析[J]. 中国电机工程学报,2015, 35(22):5703-5714.
XUE Yongduan, LI Juan, XU Bingyin. Transient equivalent circuit and transient analysis of single-phase earth fault in arc suppression coil grounded system[J]. Proceedings of the CSEE, 2015, 35(22): 5703-5714.
[12][秦丽文,俞小勇,吴丽芳,等. 不同过渡电阻下小电流接地故障暂态选线的适用性分析[J]. 广西电力,2018, 41(4):1-7, 27.
QIN Liwen, YU Xiaoyong, WU Lifang, et al. Adaptability analysis of transient line selection of small current grounding fault under different transition resistances[J]. Guangxi Electric Power, 2018, 41(4): 1-7, 27.
[13][张海申,何正友,张钧. 谐振接地系统单相接地故障频谱特征分析[J]. 电力系统自动化,2012, 36(6):79-84.
ZHANG Haishen, HE Zhengyou, ZHANG Jun. Frequency spectrum characteristic analysis of single-phase grounding fault in resonant grounded systems[J]. Automation of Electric Power Systems, 2012, 36(6): 79-84.

备注/Memo

备注/Memo:
收稿日期:2018-08-04 作者简介:史常凯(1983—),男,硕士,高级工程师,现从事配电系统及设备测试研究工作。
更新日期/Last Update: 2020-07-07