小电流接地选线综述
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摘要
我国中低压(3～66kV)配电网多采用中性点不接地和经消弧线圈接地的两种小电流接地系统。文章首先分析小电流接地故障选线检测与保护的难点,然后从小电流接地选线方法、小电流接地选线装置、测试方法及检测技术标准这4个方面对小电流接地选线的研究发展做出介绍,最后对小电流选线技术进行展望。
In China, medium and low voltage(3 ～66 kV) distribution network mostly adopts two small current grounding methods in which the neutral point is not grounded and the arc suppression coil is grounded. This paper first analyses the difficulties of detection and protection of fault line selection for small current grounding, then introduces the research and development of fault line selection for small current grounding from four aspects: the method of fault line selection, the small current grounded fault line selection device, the method of simulation and the technical standard for testing. At last, the technology of fault line selection for small current grounding is prospected.
In China, medium and low voltage(3 ～66 kV) distribution network mostly adopts two small current grounding methods in which the neutral point is not grounded and the arc suppression coil is grounded. This paper first analyses the difficulties of detection and protection of fault line selection for small current grounding, then introduces the research and development of fault line selection for small current grounding from four aspects: the method of fault line selection, the small current grounded fault line selection device, the method of simulation and the technical standard for testing. At last, the technology of fault line selection for small current grounding is prospected.
引文
[1]徐丙垠,李天友,薛永端.配电网触电保护与中性点接地方式[J].供用电,2017,17(05):21-26.
[2]王洪,邢静原,张广辉,等.小接地电流系统单相接地消弧、过压、感电、保护技术研究与应用[J].华北电力技术,2013(10):1-6.
[3]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.
[4]郭清涛,吴田.小电流接地系统故障选线方法综述[J].电力系统保护与控制,2010,38(2):146-152.
[5]樊淑娴,徐丙垠,张清周.注入方波信号的经消弧线圈接地系统故障选线方法[J].电力系统自动化,2012,36(04):91-95.
[6]马静,王希,王增平.一种基于电流突变量的故障选相新方法[J].中国电机工程学报,2012,32(19):117-124,194.
[7]徐靖东,张保会,尤敏,等.基于暂态零序电流特征的小电流接地选线装置[J].电力自动化设备,2009,29(4):101-105.
[8]王伟,焦彦军.暂态信号特征分量在配网小电流接地选线中的应用[J].电网技术,2008(04):96-100.
[9]王俊杰,江智军,周江源.中电阻法小电流选线的RTDS测试可行性分析[J].实验室研究与探索,2016,35(08):135-137,142.
[10]Brenna M, De Berardinis E, Delli Carpini L, et al. Petersencoil regulators analysis using a real-time digital simulator[J]. IEEETransactions on Power Delivery, 2011, 26(3):1479-1488.
[2]王洪,邢静原,张广辉,等.小接地电流系统单相接地消弧、过压、感电、保护技术研究与应用[J].华北电力技术,2013(10):1-6.
[3]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.
[4]郭清涛,吴田.小电流接地系统故障选线方法综述[J].电力系统保护与控制,2010,38(2):146-152.
[5]樊淑娴,徐丙垠,张清周.注入方波信号的经消弧线圈接地系统故障选线方法[J].电力系统自动化,2012,36(04):91-95.
[6]马静,王希,王增平.一种基于电流突变量的故障选相新方法[J].中国电机工程学报,2012,32(19):117-124,194.
[7]徐靖东,张保会,尤敏,等.基于暂态零序电流特征的小电流接地选线装置[J].电力自动化设备,2009,29(4):101-105.
[8]王伟,焦彦军.暂态信号特征分量在配网小电流接地选线中的应用[J].电网技术,2008(04):96-100.
[9]王俊杰,江智军,周江源.中电阻法小电流选线的RTDS测试可行性分析[J].实验室研究与探索,2016,35(08):135-137,142.
[10]Brenna M, De Berardinis E, Delli Carpini L, et al. Petersencoil regulators analysis using a real-time digital simulator[J]. IEEETransactions on Power Delivery, 2011, 26(3):1479-1488.