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タイトル
和文: 
英文:An electromagnetic transient simulation model of grid-connected inverters for dynamic voltage analysis of distribution systems 
著者
和文: 佐野 憲一朗, Rikido Yonezawa, Taku Noda.  
英文: Kenichiro Sano, Rikido Yonezawa, Taku Noda.  
言語 English 
掲載誌/書名
和文: 
英文:Electrical Engineering in Japan 
巻, 号, ページ vol. 206    no. 4    pp. 11-21
出版年月 2019年2月11日 
出版者
和文: 
英文:Wiley Periodicals 
会議名称
和文: 
英文: 
開催地
和文: 
英文: 
DOI https://doi.org/10.1002/eej.23179
アブストラクト Transient analysis is an indispensable tool for analyzing the voltage fluctuation of distribution systems according to the penetration of distributed generations with grid-connected inverters. Electromagnetic transient (EMT) analysis is suitable for the purpose because it enables detailed modeling of the inverters and accurate simulation of their dynamic behavior. However, the EMT analysis requires a smaller calculation time step by a factor of 500 if the simulated power system includes the inverters. Simulation of the inverters is a bottleneck in speeding up the EMT analysis. This paper proposes a novel average-value modeling method for the grid-connected inverters. The proposed inverter model operates in a larger calculation time step, and speeds up the EMT analysis of distribution systems containing the inverters. The maximum error in the output power was 8% compared to the result by the conventional model. Dynamic voltage simulations are demonstrated with a test case, which includes tap changing transformers with a voltage controller and a photovoltaic generation facility. The proposed model reduces the required calculation time by a factor of 754 compared to the conventional model whereas there is no significant difference in the simulated result.

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