某火电厂启备变故障时机组启动方案研究  

Study on the Starting Scheme of the Unit in a Thermal Power Plant When the Start-up Transformer Breaks Down

作　　者：高婷婷[1] 高利平 GAO Ting-ting;GAO Li-ping(Minnan University of Science and Technology,Quanzhou Fujian 362700,China;Shenhua Funeng Power Generation Co.,Ltd.,Quanzhou Fujian 362700,China)

机构地区：[1]闽南理工学院电子与电气工程学院,福建泉州362700 [2]神华福能发电有限责任公司生产技术部,福建泉州362700

出　　处：《装备制造技术》2020年第11期80-82,85,共4页Equipment Manufacturing Technology

基　　金：福建省教育厅科技项目:火电厂启备变故障时机组启动方案研究(项目编号:JAT190889)。

摘　　要：火电厂机组启动时依靠启备变提供厂用电电源。一旦启备变发生故障,将影响机组启动,给电网造成不利影响,给电厂造成经济损失。研究了一种不依赖启备变供电的倒送电启机方案,不增加硬件投资成本,通过运行方式的改变实现启机过程中厂用电供电要求,相对传统启机方式是一种突破。对双(多)机组火电厂项目有实际指导意义。The auxiliary power supply is provided by the start-up transformer when the power unit is started up.Once the start-up transformer breaks down,it will affect the starting of the unit,cause adverse impact on the power grid,and cause huge economic losses to the power plant.In this paper,we study a kind of power inverse transmission scheme which does not depend on the power supply of the start-up transformer and does not increase the hardware investment cost.It is a breakthrough compared with the traditional starter mode to realize the power supply requirements of the plant during the starter by changing the operation mode.This paper has the practical guidance significance to the double-unit(multi-unit)thermal power plant project.

关 键 词：启备变 倒送电 厂用电切换 保护配合 风险管控 

分 类 号：TM621.3[电气工程—电力系统及自动化]