农村电网漏电保护器分级管理的研究
发布时间：2018-08-17 14:52
【摘要】：我国每年因漏电引起火灾造成的经济损失达数亿元,防止因漏电而引起人身触电以及因接地故障而使供电线路损坏甚至发生火灾已成为当务之急。因此,对农村低压电网漏电保护进行合理配置和监测对于提高农村低压电网的用电水平、减少低压电网漏电事故、提高电网供电的可靠性意义重大。本文分析了单相和三相配电网络中的漏电电流特性,根据漏电电流的特性分析了漏电保护器的基本原理,并根据农村低压配电网的特点,以每一个台区为基本对象,一个台区内漏电保护器采用三级配置,介绍以一个台区为单元的三级漏电保护器配置系统。此外,本文分析研究了漏电保护监测系统,以实现对所有的漏电保护器进行监测,该漏电保护监测系统以具有通信功能的智能漏电保护器为基础,以专线GPRS为通信方式,旨在提高漏电保护器的运行和维护效率,保证供电可靠性,全面提升低压配电网的智能化。最后,本文基于已经投入使用并取得很好经济效益的浙江电网漏电保护监测系统对农村电网三级漏电保护进行了举例说明,系统介绍了漏电保护监测系统的基本功能和高级应用,研究成果有利于进一步深化农村低压电网漏电保护的更新改造,提高农村电网供用电的安全性和可靠性。
[Abstract]:The economic loss caused by electric leakage fire in China is hundreds of millions of yuan every year. It has become an urgent matter to prevent electric shock caused by leakage and damage or even fire of power supply line caused by grounding fault. Therefore, it is of great significance to rationally configure and monitor the leakage protection in rural low-voltage power grid to improve the level of rural low-voltage power supply, reduce leakage accidents and improve the reliability of power supply. In this paper, the characteristics of leakage current in single-phase and three-phase distribution networks are analyzed. The basic principle of leakage protector is analyzed according to the characteristics of leakage current. According to the characteristics of rural low-voltage distribution network, each station is taken as the basic object. This paper introduces a three-stage leakage protector configuration system with a unit of one station area. In addition, this paper analyzes and studies the leakage protection monitoring system to realize the monitoring of all the leakage protection devices. The leakage protection monitoring system is based on the intelligent leakage protector with communication function and takes the special line GPRS as the communication mode. The purpose of this paper is to improve the operation and maintenance efficiency of the leakage protector, to ensure the reliability of power supply, and to enhance the intelligence of the low voltage distribution network. Finally, based on the leakage protection monitoring system of Zhejiang Power Grid, which has been put into use and achieved good economic benefits, the third stage leakage protection of rural power network is illustrated with examples. The basic function and advanced application of leakage protection monitoring system are introduced systematically. The research results are helpful to further deepen the renewal and transformation of leakage protection in rural low-voltage power network and to improve the security and reliability of rural power supply and power supply.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM727.1
本文编号：2187996
[Abstract]:The economic loss caused by electric leakage fire in China is hundreds of millions of yuan every year. It has become an urgent matter to prevent electric shock caused by leakage and damage or even fire of power supply line caused by grounding fault. Therefore, it is of great significance to rationally configure and monitor the leakage protection in rural low-voltage power grid to improve the level of rural low-voltage power supply, reduce leakage accidents and improve the reliability of power supply. In this paper, the characteristics of leakage current in single-phase and three-phase distribution networks are analyzed. The basic principle of leakage protector is analyzed according to the characteristics of leakage current. According to the characteristics of rural low-voltage distribution network, each station is taken as the basic object. This paper introduces a three-stage leakage protector configuration system with a unit of one station area. In addition, this paper analyzes and studies the leakage protection monitoring system to realize the monitoring of all the leakage protection devices. The leakage protection monitoring system is based on the intelligent leakage protector with communication function and takes the special line GPRS as the communication mode. The purpose of this paper is to improve the operation and maintenance efficiency of the leakage protector, to ensure the reliability of power supply, and to enhance the intelligence of the low voltage distribution network. Finally, based on the leakage protection monitoring system of Zhejiang Power Grid, which has been put into use and achieved good economic benefits, the third stage leakage protection of rural power network is illustrated with examples. The basic function and advanced application of leakage protection monitoring system are introduced systematically. The research results are helpful to further deepen the renewal and transformation of leakage protection in rural low-voltage power network and to improve the security and reliability of rural power supply and power supply.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM727.1
【参考文献】
相关期刊论文 前2条
1 刘金琰;季慧玉;;剩余电流保护电器的IEC标准最新动态研究[J];低压电器;2008年23期
2 胡任远;;浅谈在农村电网中漏电保护器的合理配置[J];广西轻工业;2009年10期
，本文编号：2187996
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