某电厂单母分段接线方式厂用电快速切换系统存在的问题及改进措施  

Problems and improvement measures of fast switching system for the auxiliary power in power plant with single bus with subsection connection

作　　者：李洲 方子朝 令彤彤[2] 曹璐瑶 顿小宝[2] LI Zhou;FANG Zichao;LING Tongtong;CAO Luyao;DUN Xiaobao(Xi’an YiTong Thermal Power Technology Service Co.,Ltd,Xi’an 710061;Xi’an Thermal Power Research Institute Co.,Ltd,Xi’an 710061)

机构地区：[1]西安益通热工技术服务有限责任公司,西安710061 [2]西安热工研究院有限公司,西安710061

出　　处：《电气技术》2022年第8期91-94,102,共5页Electrical Engineering

摘　　要：本文介绍某国外二拖一联合循环发电厂应用的一种特殊厂用电接线形式,分析该种接线方式下原有厂用电快速切换系统不能实现厂用电安全、快速切换的原因,并从设计、保护配置及二次回路方面加以改进,通过实际的切换试验验证改进方案的可行性。This paper introduces a main wiring form applied to the auxiliary power system of combined cycle power plant(CCPP),and analyzes the reasons why the original fast-switching system for the auxiliary power cannot achieve safe and fast switching under this wiring method.The design,protection configuration and secondary circuit are improved,and the feasibility of the improved scheme is verified through the actual test.

关 键 词：厂用电 快切 主接线 联合循环发电厂(CCPP) 

分 类 号：TM611.31[电气工程—电力系统及自动化]