Electric Power ›› 2017, Vol. 50 ›› Issue (4): 52-58.DOI: 10.11930/j.issn.1004-9649.2017.04.052.07

• Power System • Previous Articles     Next Articles

Node Ordering in Power Flow Calculation Based on Graph Partitioning Algorithm

TANG Can1, GUO Rui2, GU Liqiang2, DONG Shufeng1   

  1. 1. College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;
    2. State Grid Shanghai Pudong Electric Power Supply Company, Shanghai 200122, China
  • Received:2016-11-01 Online:2017-04-20 Published:2017-04-13
  • Supported by:
    This work is supported by National High Technology Research and Development Program of China (863 Program) (No. 2014AA051901) and National Natural Science Foundation of China (No. 51207136).

Abstract: With the development of society, the topology of power grid is becoming more and more complex, and the dimension of power flow calculation is growing accordingly. Against this background, appropriate node ordering is needed to effectively accelerate the power flow calculation. As a scale-free network, the power system network can be abstracted into a graph to represent the topological relations between the various nodes. To solve the problem of node ordering, this paper presents a method based on dissection ordering algorithms to optimize node number, which can accelerate the speed of node ordering and power flow calculation of large scale system. Based on an example of IEEE 14-bus system, the process of the proposed method is described. The simulation results show that the speed and effectiveness of the proposed algorithm can satisfy online computing requirements.

Key words: node ordering, graph partitioning, power system calculation, nested dissection ordering algorithms

CLC Number: