Fault Line Selection in Non-Solid Earthed Network

索南加乐; 薛晓辉; 高峰; 顾嘉; 邓旭阳

您当前的位置：

首页 >

文章列表页 >

Fault Line Selection in Non-Solid Earthed Network

更新时间：2025-12-08

- Fault Line Selection in Non-Solid Earthed Network
- Vol. 42, Issue 4, Pages: 471-475(2008)
- 作者机构：
  
  西安交通大学电气工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM727;TM773
- Online First：10 April 2008，
  
  Published：2008
- 稿件说明：
移动端阅览
索南加乐, 薛晓辉, 高峰, et al. Fault Line Selection in Non-Solid Earthed Network[J]. 2008, 42(4): 471-475.
DOI：

索南加乐, 薛晓辉, 高峰, et al. Fault Line Selection in Non-Solid Earthed Network[J]. 2008, 42(4): 471-475. DOI：

摘要

为了提高现有的基于模型参数识别的小电流接地系统故障选线方法的灵敏度和可靠性

将线路等效成母线侧对地电容和负荷侧对地电容不相等的Π模型.在改进的Π模型中

母线侧对地电容为线路零序电容的一半

负荷侧电容受系统运行方式影响为未知量

该处理使单相接地故障选线模型更接近实际.该模型的数学方程变为线性方程

易于准确求解.利用积分方程求解该模型参数

有利于抑制高频分量

降低对滤波器性能的要求

使识别出的参数更加稳定准确

提高了选线的灵敏度和可靠性.利用EMTP仿真和现场录波数据验证了文中方法的正确性和有效性.

Abstract

To improve sensitivity and reliability of fault line selection in non-solid earthed network based on the model identification

a new Π model with unequal capacitances is presented

where the capacitance of bus-side equals to half of the zero sequence capacitance value of the line

and the capacitance of load-side is unknown which depends on the operation mode of the power system.Then the equation of the Π model gets linear which can be solved easily.Integral algorithm is chosen to restrain high-frequency component to lower the performance requirements of filter and the identified parameters become more accurate.Thus the sensitivity and reliability of fault line selection are improved.The validity of this proposed method is verified via EMTP simulator and fault recorded data.

关键词

Keywords

references

贺家李,宋从矩.电力系统继电保护原理[M].北京:中国电力出版社,2001.

LEHTONEN M,HAKOLA T.Neutral earthing and power system protection [M].Vaasa,Finland:ABB Transmit Oy Publication,1996.

贾清泉,刘连光,杨以涵,等.应用小波检测故障突变特性实现配电网小电流故障选线保护 [J].中国电机工程学报,2001,21(10):78-82.

JIA Qingquan,LIU Lianguang,YANG Yihan,et al.Abrupt change detection with wavelet for small current fault relaying [J].Proceedings of the CSEE,2001,21(10):78-82.

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.The principle of directional earth fault protection using zero sequence transients in non-solid earthed network [J].Proceedings of the CSEE,2003,23(7):51-56.

要焕年,曹梅月.电力系统谐振接地 [M].北京:中国电力出版社,2000.

索南加乐,张超,王树刚.基于模型参数识别法的小电流接地选线研究 [J].电力系统自动化,2004,28(19):65-70.

SUONAN Jiale,ZHANG Chao,WANG Shugang.Fault line selection in the non-solid earthed network based on the model identification method [J].Automation of Electric Power Systems,2004,28(19):65-70.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Parameter Identification for Preloaded Tie-Bolt Rotors with Curvic Couplings Using Kolmogorov-Arnold Networks

Line Selection Method for Grounding Faults in Distribution Networks Based on Phase Similarity of Characteristic Frequency Current

Novel Pilot Protection for Transmission Line with Shunt Reactor at Double Terminal

Experimental Study on Dynamic Coefficients for Spindle System Supported by High-Speed Hybrid Bearings

Parameters Identification for Joint Surfaces of Cantilever Beam

Related Author

YUAN Qi

LI Pu

WEN Siguo

WEI Jiaming

YU Peijiong

FENG Jianxin

ZHANG Junyi

LI Jianghan

Related Institution

School of Energy and Power Engineering, Xi'an Jiaotong University

The Advanced Power Research Institute, Hangzhou Steam Turbine Power Group

State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University

School of Mechanical Engineering, Xi'an Jiaotong University

Department of Civil Engineering, Xi'an Jiaotong University

⁰