一种提升城网220kV变电站10kV侧直供能力的方案

Study on the Improvement of Direct Power Supply Capability on the 10 kV-side of 220 kV Substation

在城市变电站建设中,提高变电站供电能力一直是研究的重点。结合当前城网变电站建设中遇到的问题,分析通过提升城网220 k V变电站10 k V侧直供能力以优化城市变电站布点,形成一种新型城区变电站建设方案。并与常规220 k V变电站方案、直降20 k V的220 k V变电站方案进行对比分析,认为该方案适用于高负荷密度城区220 k V变电站的规划建设。最后以广州某220 k V变电站为例进行了分析说明,为城区变电站建设提供参考。

Improving power supply capability has been a focus of study in the construction of substations in urban areas. According to the problems of urban substations, a new type of construction scheme of urban substation is proposed through improving the direct power supply capability on thel0 kV side of 220 kV substation, which is aimed to optimize the location of the substations in urban areas. Based on a comparison among the proposed scheme, the conventional 220 kV substation scheme and the 220 kV substations scheme which exports in 20 kV, it can be concluded that the proposed scheme is suitable for planning and construction of 220 kV substations in the urban area with high load density. Finally, a case study is conducted on a 220 kV substation in Guangzhou, which may provide references for the construction of substation in urban areas.