The Evaluation for Maximum Power Supply Capability and Benefit of Increasing Power Supply of Distribution System
Fan Li1, Wei Zhen2, Lou Suhua2, Wu Yaowu2, Yu Pei2
1. Hubei Electric Power Survey & Design Institute Wuhan 430040 China; 2. State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China
Abstract：A new method to evaluate the power supply capability of distribution system and a pre evaluation method for efficiency of increased power supply of the power distribution network project are proposed. Based on the principle of main transformer's load ratio balance, the load rate of transformer substation is used as the independent variable, the maximum power supply capacity of the system is used as the objective function, the constraint condition is that the load transfer is not more than the transmission capacity of the tie line between the substation and the capacity margin of the transformer in the case of transformer N-1, and a solution method based on linear programming is proposed to simplify the computation. Efficiency evaluation model of increased power supply is determined on the maximum power supply capacity of the system before and after the project put into operation and Load forecast value. The evaluation method not only considers the full use of the tie line and transformer capacity, but also takes into account the load balance of the substation, which ensures the security of the system and the quality of the power supply. The evaluation of the benefit of increasing power supply in the power distribution system is also realized. The effectiveness and correctness of the model has been verified through the practical examples.
范黎, 隗震, 娄素华, 吴耀武, 余佩. 配电项目最大供电能力及增供电量效益的评估[J]. 电工技术学报, 2017, 32(增刊1): 84-91.
Fan Li, Wei Zhen, Lou Suhua, Wu Yaowu, Yu Pei. The Evaluation for Maximum Power Supply Capability and Benefit of Increasing Power Supply of Distribution System. Transactions of China Electrotechnical Society, 2017, 32(增刊1): 84-91.
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2017, Vol. 32 
