电力系统保护与控制Issue(4)：54-60,7.
基于RLC模型参数辨识的配网电缆单相接地故障的单端时域测距方法
A single-ended time domain fault location method for distribution network cable single-phase earth fault based on RLC model parameter identification
唐昆明 1唐辰旭 1罗建 1张太勤 2黄翰3
作者信息
- 1. 输配电装备及系统安全与新技术国家重点实验室 重庆大学，重庆 400044
- 2. 重庆新世杰电气有限公司，重庆400030
- 3. 国网重庆市电力公司璧山供电分公司，重庆 402760
- 折叠
摘要
Abstract
This paper presents a single-ended time domain fault location method for distribution network cable single-phase earth fault based on RLC model. The method uses the transient information at a distribution network cable single-phase ground fault to establish the time-domain ranging equation combining with fault state network and fault zero-mode network. The transition resistance and the equivalent capacitance to ground are identified and evaluated. The algorithm avoids the effect on the location accuracy by such factors as weak steady-state residual current caused by the fault arc suppression coil compensation, transition resistance, fault initial angle and the neutral point operation mode. EMTP digital simulation results verify the correctness of the algorithm, and show it has a high accuracy of identification and location. The ranging average error is within 10 m, the maximum relative error is less than 0.113%, and the maximum relative error of calculating the transition resistance is less than 1. 637%, which meets the needs of practical application.关键词
配网电缆/单相接地故障/暂态信息/RLC模型/单端测距/参数辨识Key words
distribution network cable/single-phase earth fault/transient information/RLC model/single fault location/parameter identification分类
信息技术与安全科学引用本文复制引用
唐昆明,唐辰旭,罗建,张太勤,黄翰..基于RLC模型参数辨识的配网电缆单相接地故障的单端时域测距方法[J].电力系统保护与控制,2014,(4):54-60,7.
