Abstract
A new practical automatic planning method for MV distribution network considering complementation of load characteristic and division of power supply is presented to solve the problems of large network size and low equipment utilization ratio caused by the lack of consideration of complementation of load characteristic in distribution network planning. First, based on the existing research results on load clustering and grid planning, the concepts of MV distribution network feeder block and power supply unit are redefined and the technical framework of MV distribution network planning considering division of power supply is designed. Then, the evaluation indexes of feeder block partitioning and power supply unit partitioning considering complementation of load characteristic are set up, and rotation center line distance weighting alternate location algorithm is proposed to divide the feeder block. Further, the MV distribution network planning model based on power supply unit partitioning is proposed, which takes the minimum value of the sum of interruption cost based on reliability index and line integrated cost of the planning year. Combining ant colony algorithm, automatic planning algorithm is proposed to get the combinatorial solution of trunk line and branch line. Finally, the scientificalness and practicability of the model and method in this paper was verified through the case study.
Highlights
The distribution network planning is carried out on the basis of load forecasting and substation site selection and capacity, which has a direct and significant impact on the economics and reliability of distribution network construction and operation [1]–[3]
2) THE RESULTS OF THE FEEDER BLOCK PARTITION WHEN THE COMPLEMENTATION OF THE LOAD CHARACTERISTICS IS CONSIDERED According to the feeder block partitioned algorithm considering the complementary of the load characteristics, a better feeder block partitioned scheme for each substation is obtained
This paper proposes a practical automatic planning for distribution network considering the complementation of load characteristic and module partitioning
Summary
The distribution network planning is carried out on the basis of load forecasting and substation site selection and capacity, which has a direct and significant impact on the economics and reliability of distribution network construction and operation [1]–[3]. With the popularization of computer-aided decision-making technology, some researchers explored the problem of automatic planning, and studied the main line and branch line layout and contact structure optimization [7]–[9] They proposed a solution based on heuristic algorithm and artificial intelligence algorithm [10]–[13]. In view of the above problems, this paper first constructs a modular planning idea system for power grid and power supply unit including substation interconnection structure. The solution steps of grid layout planning for medium voltage distribution network considering modular division are constructed. The power supply unit level focuses on the power grid target network and determines the scheme of the medium voltage trunk line wiring group
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