Reactive Power Optimization Problem Research Based on Node-Voltage-Based and Branch-Current-Based Hybrid Electric Power Network Equations

Abstract:

The electric power system is a specific example among various networks in nature and human society, in which the network flow models and arithmetic can be applied. The node-voltage-based and branch-current-based hybrid electric power network equations are established in this paper, and the reactive power optimization problem is modeled based on the established network equations. It is respectively solved while the reactive power optimization problem is decomposed as two sub-problems, among which a sub-problem is described by quadric minimum cost flow model and another one is expressed by a linear equations. Thereby, the complexity and dimensions of reactive power optimization problem are distinctly reduced due to the two decomposed sub-problems are easy to solve. It is proved that found optimal solution is closed to global by the computational efficiency analysis. The case study is made at IEEE-30 system and it is indicated that proposed approach could improve the computational efficiency of reactive power optimization problem by comparing with traditional optimal power flow arithmetic.

• Periodical: Advanced Materials Research (Volumes 614-615)
• Pages: 751-760
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.614-615.751
• Online since: December 2012
• Authors: Guo You Wang, Xi Lin Zhang, Yu Shi, Yang Liu, Cheng Min Wang, Tao Yi
• Keywords: Network Flow, Optimal Power Flow (OPF), Quadric Programming, Reactive Power Optimization

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