广东惠州液化天然气电厂厂用电系统的设计特点

Design Features of Service Power System in Guangdong Huizhou Natural Gas Fired Power Plant

燃气机组具有起动迅速的特点,故一般设计为电网调峰电厂,采用每天两班制运行方式。惠州燃机电厂厂用电系统的高压厂变选用双卷变压器、中压厂用母线段设计为一段、高压厂用电系统中性点采用高阻接地方式、不设高压公用母线、每台机组均设置一段交流保安电源,这种厂用电系统设计合理、操作维护方便。

Gas turbine generating unit features quick start-up, hence the gas turbine power plant is designed generally as the peaking power plant in the power grid,and to adopt two-shift operation mode.Tne design features of service power system in Huizhou Gas Turbine Power Plant are as follows：to adopt two-winding transformer for high voltage service power,the Ires section for medium voltage service power is designed as one section; to adopt high resistance grounding for the neutral point of high voltage service power system; without common Ires designed; one section AC safety power soures is designed for every unit. This kind of service power system is reasonable in design and convenient in operation.