Loop Analysis Method for Short Circuit Current Calculation of Distribution Network with Inverter-Interfaced Distributed Generators. (February 2019)

• Record Type: Journal Article
• Authors: Wang, Shouxiang; Jiang, Xingyue; Li, Qionghui; Huang, Bibin
• Is Part Of: Energy procedia. Volume 158(2019)
• Page Start: 2909
• Page End: 2914
• Publication Date: 2019-02
• Subjects: inverter interfaced distributed generation(IIDG) -- distribution network -- short-circuit current calculation -- loop-analysis method; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2019.01.949
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: To effectively calculate the short-circuit current of distribution network with IIDGs and meet the engineering demand, a novel short-circuit current calculation algorithm based on loop-analysis method is proposed. Equivalent fault models of current-connected IIDGs as well as voltage-controlled IIDGs are derived considering protection and control strategies. Moreover, the loop voltage function of distribution network with IIDGs during a fault is built, and an iterative correction method is proposed to solve the function. Test results show that the proposed method is effective and can satisfy the engineering requirement. It is also shown that the voltage improvement is more remarkable when IIDG adopt LVRT strategy than current limiting strategy. The degree of improvement is determined by many factors such as network structure, fault position, output current of IIDG, etc.