中压配电电压等级选择研究

Choice of Medium Voltage Level for Power Distribution Network

对变压器容量和线路供电能力与电压等级的关系进行了分析研究。根据分析结果,选取了不同电压等级下的电网设备,制定了其参考价格,并在此基础上得出了10kV、20kV、35kV配电的技术指标和经济性。根据分析结果,当负荷密度在10~40MW/km2时,推荐采用20kV作为中压配电电压。

The relationship between transformers＇ capacity and their voltage levels and the relationship between power supply lines and their voltage levels are studied. According to the research results, some facilities used in different voltage levels are chosen, such as substation transformers, power supply lines and distribution transformers, and their reference prices are suggested. Based on the above work, some technical indicators and the economy of a distribution network under different voltage levels are compared. According to the analysis results, the voltage level of 20kV is recommended in condition of 10-40MW/km^2 load density.