河南省华能沁北电厂500kV电气主接线方案探讨

An Inquiry about the 500kV Main Bus Wiring Scheme of Henan Qinbei Thermal Power Plant

根据沁北电厂2000年示范初步设计中间审查会上提出的3种500kV电气主接线方案，着重从安全性、可靠性及经济性方面详细分析了各种主接线的优缺点。经对比，业主倾向于环形母线多分段接线为主方案。该方案在可靠性有保证的情况下，能大幅降低工程造价，同时为今后国内同类电厂电气主接线方案选定提供了参考。

Based on the three main bus wiring SChemes submitted on an intermediate examine com mittee as the demonstrative Preliminary design for 2000and beyond,this paper anhlyzes all their advantages and disadvantages from the POint of view of security, reliability and economy.The owner,after comparing,prefers to adopt the looped main bus scheme with segments, which allows to reduce a considerable engineering cost.All these men-noned in this paper would be worthy in electric main bus scheme selection for those similar large thermal power plants of the country