Economic Dispatch Method of DC Distribution Network
DENG Dezheng1,LIU Chang2,LI Gengyin3
1.国网天津东丽供电公司,天津 东丽 300300 2.北京新机场建设指挥部,北京 大兴 102602 3.新能源电力系统国家重点实验室(华北电力大学),北京 昌平 102206 1. State Grid Tianjin Power Dongli Power Supply Branch, Dongli District, Tianjin 300300, China 2. Beijing New Airport Construction Headquarters, Daxing District, Beijing 102602, China 3. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), Changping District, Beijing 102206, China
DC distribution system is characterized by good controllability, low loss, high power quality and large transmission capacity. It is suitable for multipoint access of distributed generations, and it is the new development direction of distribution system. Economic dispatch is one of the key technologies for the development of DC distribution system. Based on the analysis of the characteristics of DC distribution network, a multi-time scales-based economic dispatch model is firstly established for DC distribution network, which is divided into two stages: day-ahead optimal scheduling and real-time scheduling. Through the coordination and optimization of two stages, the economic dispatch of DC distribution network is realized. Then, a specific example of the model is solved by the improved particle swarm optimization (IPSO) algorithm. Finally, the correctness and effectiveness of the proposed economic dispatch model has been verified through the optimization results.
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