基于GOOSE的煤矿井下防越级跳闸方案研究

针对煤矿井下高压配电网络经常发生越级跳闸这一难题,分析了井下高压配电网络发生越级跳闸的原因以及目前常用的电气闭锁方案、分站集中控制方案、数字化变电站方案、光纤电流纵联差动保护方案这4种越级跳闸解决方案在应用中存在的问题;介绍了基于IEC61850标准的GOOSE报文传输协议在数据交换上的优越性,在此基础上提出了一种基于GOOSE的煤矿井下防越级跳闸方案,并以某煤矿井下高压供电线路为例,阐述了该保护方案的实现过程。基于GOOSE的煤矿井下防越级跳闸方案中下级开关只关联到其上一级,上、下级开关形成纵向关联并采用GOOSE协议传输信息,同级开关之间没有通信,提高了信息传输的实时性和可靠性。

Research of preventing override trip scheme of coal mine underground based on GOOSE

In order to solve problem of frequent override trip in high-voltage distribution network of coal mine underground,the paper analyzed causes of override trip in underground high-voltage distribution network and problems of common solutions in application including electrical locking,centralized control of substation,digital substation and differential protection of optical fiber current.It introduced the superiority of GOOSE message transmission protocol based on IEC61850 standard for data exchange.On the basis,it proposed a preventing override trip scheme based on GOOSE,and described implementation process of the scheme taking an underground high-voltage power line as an example.In the scheme,lower switches only associated with their upper switches,the upper switches and the lower ones communicated longitudinally through GOOSE protocol,and switches with the same grade do not communicated to each other,so as to improve real-time and reliability performance of information transmission.