Automatic routing of medium voltage distribution network based on load complementary characteristics and power supply unit division

Abstract

Abstract In view of the problems of large network scale and low equipment utilization efficiency caused by the lack of consideration of load complementary characteristics in the current distribution network planning, a new practical automatic routing method of medium voltage distribution network considering load complementary characteristics and power supply unit division is proposed. Firstly, based on the existing conclusions of load clustering and gridding planning, the concepts of feeder block and power supply unit of medium voltage distribution network are redefined, and the framework of medium voltage distribution network planning considering the power supply unit division is proposed. Secondly, the evaluation indexes of feeder block division and power supply unit division considering the load complementary characteristics are proposed, and a centerline swing distance weighted clustering algorithm is proposed, which is used to realize the feeder block division. Thirdly, considering the annual comprehensive cost of line planning and the outage loss cost based on reliability index, the medium voltage distribution network planning model is established based on the power supply unit division. The automatic routing method is proposed based on ant colony algorithm, which is used to realize the combinatorial solution of the trunk line and branch line. Finally, an example is given to verify the scientificity and practicability of the model and method proposed in this paper.