有源配电网小电流接地故障暂态特征及其影响分析

doi:10.19595/j.cnki.1000-6753.tces.201716

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1546 KB) HTML
输出: BibTeX | EndNote (RIS)

摘要随着“双高（高比例清洁能源、高比例电力电子装置）电网”的普及,逆变型与旋转型分布式电源（DG）接入配电网的渗透率越来越高,其对小电流接地故障暂态特征及暂态检测的影响尚需进一步明确。该文建立了有源配电网接地故障等效电路,研究了不同DG类型（旋转型、逆变型）、接入位置及接入数量时接地故障暂态特征的变化规律,并分析其对暂态选线/定位原理与装置性能的影响。结果表明,由于DG接入不改变故障零模网络,现有利用暂态零模信号的选线与定位方法在原理上仍能适用;旋转型DG将使故障暂态电流的主谐振频率及幅值增大,衰减时间分布范围扩大,相应地,接地故障检测装置的采样频率与电流测量范围应适度增加。仿真验证了该文结果的正确性。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	秦苏亚
	薛永端
	刘砾钲
	郭雨豪
	徐铭铭

关键词 ：有源配电网, 分布式电源, 小电流接地故障, 暂态特征, 暂态选线, 暂态定位

Abstract：With the popularization of "double high (high proportion of clean energy, high proportion of power electronic devices) power grid". The penetration rate, of inverter-type and rotating distributed power supplies (DG) into the distribution network, is getting higher. Its influence on the transient characteristics and transient detection of single-phase grounding faults need to be further clarified. In this paper, the grounding fault equivalent circuit of active distribution network is established. The variation law, of grounding fault transient characteristics under different DG types as well as different access locations and access numbers is studied. Its impact on the device performance and the principle of transient line selection and location method is analyzed. The results show that since the access of DG does not change the faulty zero-mode network, the existing line selection and location method using the transient zero-mode signal can still be applied in principle. The access of rotating DG will increase the main resonant frequency and amplitude of the fault transient current, and expands the distribution range of attenuation time. Correspondingly, the sampling frequency and current measurement range of the grounding fault detecting device should be moderately increased. Simulation and field fault data verify the correctness of the results.

Key words： Active distribution network distributed generation(DG) small grounding fault transient characteristics transient line selection transient fault locating

收稿日期: 2020-12-30

PACS:

TM713

基金资助:国家自然科学基金项目（52077221）和国家电网总部科技项目（SGHADK00PJJS1900078）资助

通讯作者: 薛永端男,1970年生,教授,博士生导师,研究方向为配电网接地故障保护与电气安全防护。E-mail：xueyd70@126.com

作者简介: 秦苏亚男,1995年生,硕士研究生,研究方向为配电网接地故障检测与保护等。E-mail：qinsuya@126.com

引用本文:

秦苏亚, 薛永端, 刘砾钲, 郭雨豪, 徐铭铭. 有源配电网小电流接地故障暂态特征及其影响分析[J]. 电工技术学报, 2022, 37(3): 655-666. Qin Suya, Xue Yongduan, Liu Lizheng, Guo Yuhao, Xu Mingming. Transient Characteristics and Influence of Small Current Grounding Faults in Active Distribution Network. Transactions of China Electrotechnical Society, 2022, 37(3): 655-666.

链接本文:

https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.201716 https://dgjsxb.ces-transaction.com/CN/Y2022/V37/I3/655

[1] 程路, 陈乔夫. 小电流接地系统单相接地选线技术综述[J]. 电网技术, 2009, 33(18): 219-224.
Cheng Lu, Chen Qiaofu.Summary of single-phase grounding line selection technology for small current grounding system[J]. Power System Technology, 2009, 33(18): 219-224.
[2] 薛永端, 李广, 徐丙垠. 利用熄弧后暂态信息测量谐振接地系统的对地电容[J]. 电工技术学报, 2020, 35(7): 1521-1528.
Xue Yongduan, Li Guang, Xu Bingyin.Measuring method of capacitance to ground in resonant grounding system based on transient information after arc extinguishing[J] Transactions of China Electrotechnical Society, 2020, 35(7): 1521-1528.
[3] 汤涛, 黄纯, 江亚群, 等. 基于高低频段暂态信号相关分析的谐振接地故障选线方法[J]. 电力系统自动化, 2016, 40(16): 105-111.
Tang Tao, Huang Chun, Jiang Yaqun, et al.Fault line selection method in resonant earthed system based on transient signal correlation analysis under high and low frequencies[J]. Automation of Electric Power Systems, 2016, 40(16): 105-111.
[4] Zamora I, Mazon A J, Sagastabeitia K J, et al.New method for detecting low current faults in electrical distribution systems[J]. IEEE Transactions on Power Delivery, 2007, 22(4): 2072-2079.
[5] 王晓卫, 高杰, 吴磊, 等. 柔性直流配电网高阻接地故障检测方法[J]. 电工技术学报, 2019, 34(13): 2806-2819.
Wang Xiaowei, Gao Jie, Wu Lei, et al.A high impedance fault detection method for flexible DC distribution network.[J] Transactions of China Electrotechnical Society, 2019, 34(13): 2806-2819.
[6] 唐其筠, 吴帆, 孙羽宁, 等. 基于中阻抗接地法的谐振接地系统综合选线策略研究[J]. 电气技术, 2019, 20(4): 72-75, 81.
Tang Qijun, Wu Fan, Sun Yuning, et al.Research of the comprehensive fault detection method based on moderate value resistance for neutral resonant grounded network[J]. Electrical Engineering, 2019, 20(4): 72-75, 81.
[7] 马亚辉, 李欣然, 徐振华, 等. 一种逆变并网型分布式电源统一模型[J]. 电工技术学报, 2013, 28(9): 145-154.
Ma Yahui,Li Xinran,Xu Zhenhua,et al.A unified model of grid-connected distributed generation throughinverters[J]. Transactions of China Electrotechnical Society, 2013, 28(9): 145-154.
[8] 朱吉然, 牟龙华, 郭文明. 考虑并网运行微电网故障方向识别的逆变型分布式电源故障控制[J/OL]. 电工技术学报2021:1-13[2021-07-26]. https://doi.org/ 10.19595/j.cnki.1000-6753.tces.201672.
Zhu Jiran, Mu Longhua, Guo Wenming. Fault control of inverter interfaced distributed generator considering fault direction identification of the grid-connected microgrid[J/OL]. Transactions of China Electrotechnical Society, 2021: 1-13[2021-07-26]. https://doi.org/10.19595/j.cnki.1000-6753.tces. 201672.
[9] 涂春鸣, 葛钦, 肖凡, 等. 基于光伏电源支撑的多端口固态变压器故障穿越策略[J]. 电工技术学报, 2020, 35(16): 3498-3508.
Tu Chunming, Ge Qin, Xiao Fan, et al.Fault ride-through control strategy of solid state transformer with PV power generation[J]. Transactions of China Electrotechnical Society, 2020, 35(16): 3498-3508.
[10] 彭克, 张聪, 徐丙垠, 等. 含高密度分布式电源的配电网故障分析关键问题[J]. 电力系统自动化, 2017, 41(24): 184-192.
Peng Ke, Zhang Cong, Xu Bingyin, et al.Key issues of fault analysis on distribution system with high-density distributed generations[J]. Automation of Electric Power Systems, 2017, 41(24): 184-192.
[11] Morren J, De Haan S W H. Short-circuit current of wind turbines with doubly feed induction generator[J]. IEEE Transactions on Energy Conversion, 2007, 22(1): 174-180.
[12] 王守相, 江兴月, 王成山. 含分布式电源的配电网故障分析叠加法[J]. 电力系统自动化, 2008, 32(5): 38-42.
Wang Shouxiang, Jiang Xingyue, Wang Chengshan.A superposition method of fault analysis for distribution systems containing distributed generations[J]. Automation of Electric Power Systems, 2008, 32(5): 32-36.
[13] 钱虹, 黄正润, 阮大兵. 含DG的小电流接地系统单相接地故障定位[J]. 电机与控制学报, 2014, 18(8): 17-23.
Qian Hong, Huang Zhengrui, Ruan Dabing.Single phase-to-earth fault location of small current grounding system with distributed generation[J]. Electric Machines and Control, 2014, 18(8): 17-23.
[14] 杨志豪, 李彩林, 刘晓祥, 等. 基于高频零序电流幅相归一的分布式电网单相接地故障选线方法[J]. 桂林电子科技大学学报, 2017, 37(3): 234-239.
Yang Zhihao, Li Cailin, Liu Xiaoxiang.et al.A single-phase earth fault line selection method in distributed power system based on the unity of amplitude and phase of high frequency zero-sequence current[J]. Journal of Guilin University of Electronic Technology, 2017, 37(3): 234-239.
[15] 黄超艺, 蔡金锭, 李天友, 等. 分布式接入配网单相接地故障定位适应性分析[J]. 电气技术, 2015, 16(7): 58-62.
Huang Chaoyi, Cai Jinding, Li Tianyou, et al.The adaptability analysis of single-phase fault location for distribution network with generations[J]. Electrical Engineering, 2015, 16(7): 58-62.
[16] 刘健, 张小庆, 同向前, 等. 含分布式电源配电网的故障定位[J]. 电力系统自动化, 2013, 37(2): 36-42, 48.
Liu Jian, Zhang Xiaoqing, Tong Xiangqian, et al.A new fault location algorithm based on fault component from finite synchronized phasor measurement unit[J]. Automation of Electric Power Systems, 2013, 37(2): 36-42, 48.
[17] 何瑞江, 胡志坚, 李燕, 等. 含分布式电源配电网故障区段定位的线性整数规划方法[J]. 电网技术, 2018, 42(11): 3684-3692.
He Ruijiang, Hu Zhijian, Li Yan, et al.A fault line selection method for resonant grounding system considering injected harmonics of distributed generation[J]. Power System Technology, 2018, 42(11): 3684-3692.
[18] 高孟友, 徐丙垠, 张新慧. 基于故障电流幅值比较的有源配电网故障定位方法[J]. 电力自动化设备, 2015, 35(7): 21-25.
Gao Mengyou, Xu Bingyin, Zhang Xinhui.Fault location based on fault current amplitude comparison for active distribution network[J]. Electric Power Automation Equipment, 2015, 35(7): 21-25.
[19] 李娟. 小电流接地故障暂态等效电路研究[D]. 淄博:山东理工大学, 2012.
[20] 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效电路及暂态分析[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.
[21] 王志群, 朱守真, 周双喜, 等. 分布式发电对配电网电压分布的影响[J]. 电力系统自动化, 2004, 28(16): 56-60.
Wang Zhiqun, Zhu Shouzhen, Zhou Shuangxi, et al.Impacts of distributed generation on distribution system voltage profile[J]. Automation of Electric Power Systems, 2004, 28(16): 56-60.
[22] 李斌, 刘天琪, 李兴源. 分布式电源接入对系统电压稳定性的影响[J]. 电网技术, 2009, 33(3): 84-88.
Li Bin, Liu Tianqi, Li Xingyuan.Impact of distributed generation on power system voltage stability[J]. Power System Technology, 2009, 33(3): 84-88.
[23] 薛永端, 高旭, 苏永智, 等. 小电流接地故障谐波分析及其对谐波选线的影响[J]. 电力系统自动化, 2011, 35(6): 60-64.
Xue Yongduan, Gao Xu, Su Yongzhi, et al.Analysis of harmonic in non-solidly earthed network and its influences on harmonic-based earth fault protection[J]. Automation of Electric Power Systems, 2011, 35(6): 60-64.
[24] 薛永端, 冯祖仁, 徐丙垠, 等. 基于暂态零序电流比较的小电流接地选线研究[J]. 电力系统自动化, 2003, 27(9): 48-53.
Xue Yongduan, Feng Zuren, Xu Bingyin, et al.Study on small current grounding line selection based on comparison of transient zero sequence currents[J]. Automation of Electric Power Systems, 2003, 27(9): 48-53.
[25] 薛永端, 徐丙垠, 李天友, 等. 利用暂态信号的配电网小电流接地故障检测技术[J]. 电力设备, 2001(3): 22-25.
Xue Yongduan, Xu Bingyin, Li Tianyou, et al . Detection technology of small current ground fault in distribution network using transient signals[J]. Electric Power Equipment, 2001(3): 22-25.
[26] 薛永端, 徐丙垠, 冯祖仁, 等. 小电流接地故障暂态方向保护原理研究[J]. 中国电机工程学报, 2003, 23(7): 51-56.
Xue Yongduan, Xu Bingyin, Feng Zuren, et al.Research on the principle of transient direction protection for small current ground faults[J]. Proceedings of the CSEE, 2003, 23(7): 51-56.
[27] 陈筱薷. 基于暂态零序电流投影的谐振接地系统高阻接地故障检测技术[D]. 青岛: 中国石油大学(华东), 2017.
[28] 曾祥君, 尹项根, 张哲, 等. 配电网接地故障负序电流分布及接地保护原理研究[J]. 中国电机工程学报, 2001, 21(6): 85-90.
Zeng Xiangjun, Yin Xianggen, Zhang Zhe, et al.Study for negative sequence current distributing and ground fault protection in middle voltage power systems[J]. Proceedings of the CSEE, 2001, 21(6): 85-90.