输配分离电力市场中含分布式发电的配电公司的购电模型

基于最优潮流建立了输配分离电力市场中，配电公司在日前电能市场的购电模型，在模型中考虑了分布式发电参与电能市场的情况，通过该模型可以得到配电公司在日前市场中分别从电力库和分布式发电商购买的电能比例以及可能的负荷中断。由于配电公司在购电时不仅考虑了购电费用最小化问题，还考虑了配网内的分布式发电对配电网损的影响，因此比较分析了不同最优目标对购电方案的影响。最后通过算例验证了上述模型的有效性，并分析了其特征。

A Power Purchase Model for Distribution Company Containing Distributed Power Generation in Electricity Market with Transmission Separated from Distribution

Based on optimal power flow,a power purchase model for distribution company in day-ahead electricity market in which power transmission is separated from power distribution is built. In this model the condition that distributed power generation participates electric energy market and the possible load interruption are considered. By use of the built model,the proportions of electricity that the distribution company purchases from power pool and distributed generation company in day-ahead market respectively can be obtained. Because distribution company considers not only the minimum power purchase cost,but also the impact of distributed generation within distribution network on network loss of distribution network,thus the impacts of different optimal objectives on power purchase scheme are compared and analyzed. The effectiveness of the built model is validated by calculation results of IEEE 33-bus radial distribution network,and the features of the built model are analyzed.