基于火电厂百万机组的电网大 UPS 电气研究及实践

摘要

With the increasing scale and increasingly complex structure of electric power systems,the electric grid poses a higher demand on large-scale thermal power units:participation in black start through use of uninterruptible power system (UPS).Starting from the background of black start of the electric grid,this paper analyzes the feasibility of grid UPS in the MW units of an thermal power plant,proposes a scheme for electrical design and upgrading,and introduces simulation results and practical experience,as a reference for those people working in the same trade.%随着电力系统规模的不断增大和结构的日益复杂，电网对大型火电机组有了做不间断电源（uninterruptible power system，UPS）参与黑启动的更高要求。从电网黑启动背景出发，分析了火电厂百万机组做电网 UPS 的可行性，提出了电气设计改造方案、介绍了仿真分析结果及实践经验，仅供同行们参考和借鉴。