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新型谐振接地系统接地故障全补偿方法

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成果类型:
期刊论文
论文标题(英文):
Novel method of full compensation for grounding fault of resonant grounding system
作者:
杨磊;曾祥君;喻锟;余敏琪;周宁;...
通讯作者:
Zeng, Xiangjun(eexjzeng@qq.com)
作者机构:
[杨磊; 周宁; 喻锟; 余敏琪] Hunan Province Key Laboratory of Smart Grids Operation and Control, Changsha University of Science and Technology, Changsha
410014, China
[Zhou, Ning; 冯光] Electric Power Research Institute of State Grid Henan Electric Power Company, Zhengzhou
450052, China
[杨磊; 周宁; 喻锟; 余敏琪] 410014, China
通讯机构:
[Zeng, X.] H
Hunan Province Key Laboratory of Smart Grids Operation and Control, China
语种:
中文
关键词:
谐振接地系统;单相接地故障;故障消弧;故障相电压;全补偿
关键词(英文):
Arc suppression;Fault phase voltage;Full compensation;Resonant grounding system;Single-phase grounding fault
期刊:
电力自动化设备
ISSN:
1006-6047
年:
2018
卷:
38
期:
11
页码:
57-62
基金类别:
Project supported by the National Natural Science Foundation of China(51737002),the Research and Innovation Project for Graduate Students of Hunan Province(CX2017B480) and the Science and Technology Project of State Grid Corporation of China(52170217000S).
机构署名:
本校为第一且通讯机构
院系归属:
电气与信息工程学院
摘要:
针对传统消弧线圈无法补偿有功电流和抑制间歇性接地故障等难题,提出了一种谐振接地系统接地故障全补偿新方法。系统正常运行时,通过注入信号谐振精确测量系统对地绝缘参数,根据绝缘参数计算补偿元件值;当发生接地故障时,利用故障电流的相位选出故障相,然后在故障相的滞后相投入阻容性补偿元件,将故障相电压抑制为0,实现接地故障电流全补偿。仿真分析表明,所提方法不受过渡电阻影响,能快速抑制故障相电压,实现配电系统接地故障电流的全补偿,有效抑制间歇性接地故障,且操作简单可靠、成本低。
摘要(英文):
In order to solve the problems that the traditional arc suppression coil cannot compensate the active current nor suppress the intermittent-arc grounding fault, a novel method of full compensation for grounding fault of resonant grounding system is proposed. In the normal state of resonant grounding system, the values of compensation components are calculated based on the system insulation parameters precisely measured by injecting signal resonance. When single-phase grounding fault occurs, the fault phase is selected by the phase of the fault ...

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