黄河沙坡头水电站厂用电设计特点

沙坡头水电站厂用电系统具备3个电源，其中备用电源与35kV施工变电站结合考虑，厂用电接线采用单母线分段接线，单台厂用变压器容量按大于50％最大厂用电负荷设计，对泄洪等负荷设置了柴油发电机组作为的应急电源。并阐述了机组设置“黑启动”功能的必要性，并对主要厂用电气设备选择及布置等作了论述。

The Characteristic of the station Service Power Design for Shapotou Hydropower Station

The single busbar in sections and the enlarged unit connection method are used in the electric main wiring of Shapotou Water Control Project. The bulb tubular units were used for the riverbed power station and the north main power station. The shaft-extension tubular units are used for the south main power station. The movable switching board is used for the high voltage power distribution equipment and three main transformers are arranged in the power station area of the project. GIS switching gear is used for the high voltage power distribution equipment. GIS switch station is arranged on the left bank of the project and connected with the main transformer through the high-voltage cable. In this paper, a summary on wiring of the project, selection and arrangement of the equipment, design of the station service power system are provided.