A new method of optimal capacitor switching based on minimum spanning tree theory in distribution systems

3rd International Conference on Energy Equipment Science and Engineering

Li, H.W.^1 ; Pan, Z.Y.^1 ; Ren, Y.B.^1 ; Wang, J.^1 ; Gan, Y.L.^1 ; Zheng, Z.Z.^1 ; Wang, W.^2

State Grid of China Technology College, Jinan

250002, China^1

School of Electric Engineering, Shandong University, Shandong Province, Jinan

250061, China^2

关键词: Breadth-first search;    Capacitor compensation;    Capacitor switching;    Capacity constraints;    Distribution systems;    Minimum spanning trees;    Objective functions;    Operation characteristic;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/128/1/012018/pdf
DOI  :  10.1088/1755-1315/128/1/012018

来源: IOP

【 摘 要 】

According to the radial operation characteristics in distribution systems, this paper proposes a new method based on minimum spanning trees method for optimal capacitor switching. Firstly, taking the minimal active power loss as objective function and not considering the capacity constraints of capacitors and source, this paper uses Prim algorithm among minimum spanning trees algorithms to get the power supply ranges of capacitors and source. Then with the capacity constraints of capacitors considered, capacitors are ranked by the method of breadth-first search. In term of the order from high to low of capacitor ranking, capacitor compensation capacity based on their power supply range is calculated. Finally, IEEE 69 bus system is adopted to test the accuracy and practicality of the proposed algorithm.