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Mathematical Problems in Engineering
Volume 2016 (2016), Article ID 9404951, 10 pages
http://dx.doi.org/10.1155/2016/9404951
Research Article

Integrated Power Flow and Short Circuit Calculation Method for Distribution Network with Inverter Based Distributed Generation

1School of Automation and Information Engineering, Xi’an University of Technology, Xi’an, Shaanxi 710048, China
2Xi’an Hailian Petrochemical Technologies Co., Ltd., Xi’an, Shaanxi 710065, China

Received 27 January 2016; Revised 27 May 2016; Accepted 30 May 2016

Academic Editor: Yan-Wu Wang

Copyright © 2016 Shan Yang and Xiangqian Tong. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Power flow calculation and short circuit calculation are the basis of theoretical research for distribution network with inverter based distributed generation. The similarity of equivalent model for inverter based distributed generation during normal and fault conditions of distribution network and the differences between power flow and short circuit calculation are analyzed in this paper. Then an integrated power flow and short circuit calculation method for distribution network with inverter based distributed generation is proposed. The proposed method let the inverter based distributed generation be equivalent to bus, which makes it suitable to calculate the power flow of distribution network with a current limited inverter based distributed generation. And the low voltage ride through capability of inverter based distributed generation can be considered as well in this paper. Finally, some tests of power flow and short circuit current calculation are performed on a 33-bus distribution network. The calculated results from the proposed method in this paper are contrasted with those by the traditional method and the simulation method, whose results have verified the effectiveness of the integrated method suggested in this paper.