摘要
结合部分水电站电气主接线型式,本文对受穿越功率或送出影响的水电站,装机容量不大的主变压器接入高电压等级电力系统时,主变压器保护的配置需要考虑的问题进行了分析;另外,对受到枢纽布置影响,当主变高压侧电缆敷设长度过长时,需要在主变高压侧增设短电缆保护进行了分析,为后续水电站有类似情况的主变压器继电保护系统设计提供借鉴。
According to the main electrical wiring of some hydroelectric power station,this paper analyzes the problems to be considered in the configuration of main transformer protection when the main transformer with small installed capacity is connected to the high-voltage power system in the hydropower station affected by crossing power or transmission;In addition,due to the influence of hub layout,when the cable laying length at the high voltage side of the main transformer is too long,it is necessary to add short cable protection at the high voltage side of the main transformer,so as to provide reference for the design of main transformer relay protection system with similar conditions in subsequent hydropower stations.
作者
何璐
张振
张超
司青花
HE Lu;ZHANG Zhen;ZHANG Chao;SI Qinghua(Northwest Engineering Corporation Limited,Xi'an,Shaanxi Province,710065 China;Engineering Construction Branch of Huanghe Hydropower Development Co.,Ltd.,Xining,Qinghai Province,810000 China)
出处
《科技创新导报》
2021年第28期58-60,共3页
Science and Technology Innovation Herald
关键词
水电站
主变压器
纵差保护
整定值
Hydropower station
Main transformer
Longitudinal differential protection
Setting value
