摘要
为了提高厂用电系统的供电可靠性,丹江口水力发电厂对原有的厂用电系统进行了改造。此次改造中最主要的是改变了原有的备自投运行方式,并将原先的电磁型继电保护装置更换为微机型继电保护装置,并根据丹江口水力发电厂的现场实际情况对过流保护的逻辑回路进行更改。改造后厂用电二次系统增加了小电流选线装置和消谐装置。
In order to improve the plant power system reliability, Danjiangkou hydroelectric power plant has modified the existing electricity system. The main transformation is to change the original spare power automatic switching operation mode, and the original electromagnetic relay device has been replaced with computer-based relay device. Meanwhile, according to Danjiangkou hydroelectric power plant actual situation, the logic circuit protected by the field flow has been transformed. Then microprocessor selected line equipment of small current earthed system and harmonic elimination device have been added to the transformed auxiliary power system.
出处
《广东水利电力职业技术学院学报》
2011年第3期33-36,共4页
Journal of Guangdong Polytechnic of Water Resources and Electric Engineering
关键词
厂用电系统
备自投
微机保护
过流保护
auxiliary power system
spare power automatic switching
microprocessor protection
over-current protection
