根据平顶山第二发电厂的建设规模、接入系统条件、电气主接线要求等，提出一期工程4种电气主接线方案，并从技术、经济上进行分析论证。通过对各方案的技术经济比较，推荐工程采用一个半断路器接线方案。

Based on the construct proportion，system accessing conditions and the main electrical connection requirements of the second power station in Pingdingshan，the paper proposes 4 main electrical connection programs of the first stage project. By comparing from the technology aspect and the economy aspect，the paper recommends that the project uses one and a half circuit breakers connection program.