基于配电自动化系统的单相接地定位

发布时间：2018-01-04 12:15

本文关键词：基于配电自动化系统的单相接地定位　出处：《电力系统自动化》2017年01期 　论文类型：期刊论文

【摘要】：为了更好地进行配电网单相接地定位,提出一种将单相接地定位装置的信息直接上报配电自动化主站进行单相接地定位的方法,论述了利用配电自动化系统主站已有相间短路故障定位判据实现单相接地定位的基本方法,分析和介绍了各种单相接地定位原理的两值性和分化性特征及处理方法以满足主站定位判据的要求,论述了利用来自各个位置的单相接地定位信息之间的相互关联性,以及多种定位原理上报的定位信息的冗余性并采用贝叶斯方法实现容错定位的原理。所提方法无需改变已有配电自动化系统主站,也无需传送波形信息,即能正确实现单相接地定位。结合具体工程实例给出了现场测试和实际应用情况。
[Abstract]:In order to better locate single-phase grounding in distribution network, a method of single-phase earthing location is proposed, which can directly report the information of single-phase grounding device to the main station of distribution automation. This paper discusses the basic method of single-phase earthing location by using the existing interphase short-circuit fault location criterion in the main station of distribution automation system. This paper analyzes and introduces the duality and differentiation characteristics of various single-phase earthing positioning principles and the processing methods to meet the requirements of the master station location criterion. The correlation between single-phase earthing location information from each position is discussed. And the redundancy of location information reported by various positioning principles and the principle of fault tolerant location using Bayesian method. The proposed method does not need to change the main station of the existing distribution automation system nor to transmit waveform information. That is to say, the single-phase earthing location can be realized correctly, and the field test and practical application are given in the light of concrete engineering examples.
【作者单位】：国网陕西省电力公司电力科学研究院;国电南瑞科技股份有限公司;
【基金】：国家电网公司科技项目“提高配电网故障处理能力关键技术研究”~~
【分类号】：TM862;TM76
【正文快照】： 0　引言中国配电网普遍采用中性点非有效接地方式,单相接地故障占配电线路总故障次数80%以上,并且许多相间短路故障都由单相接地故障发展而来,因此研究配电网单相接地故障定位具有重要意义。在配电网单相接地故障检测领域已经取得了大量研究成果,大致可分为利用外加信号法和利

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