Impact of Fault Ride-through Characteristics of Large-scale Distributed Photovoltaic Integration on Voltage in Receiving-end Grid

2022 IEEE 5th International Electrical and Energy Conference (CIEEC) Pub Date : 2022-05-27 DOI:10.1109/CIEEC54735.2022.9846716

Hong Dai, C. Ruan, C. Yan, Wenting Huang, Yi Chao Wu, Li Xia Sun

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引用次数: 1

Abstract

With the rapid development photovoltaic industry in China, the installed capacity of distributed photovoltaics has been expanding. When the distributed network fails, due to the different fault ride-through strategies and parameters adopted by different companies and series of inverters, the photovoltaic power supplies show different output characteristics during the fault. This paper establishes a fault ride-through mathematical model of photovoltaic (PV) power generation system. Based on the model, the output adaptability of the PV generation is analyzed under different voltage operation conditions. Furthermore, the influence of the voltage of the photovoltaic access point is studied when the fault occurs in the distributed network. The simulation is carried on the IEEE 39-bus system. The results show that the fault ride-through model of PV can achieve secure ride through when the distributed network fails, the effectiveness of the model is verified by simulation. In addition, the voltage variation of the receiving network is within the allowable range during the fault.

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大规模分布式光伏系统故障穿越特性对接收端电网电压的影响

随着中国光伏产业的快速发展，分布式光伏的装机容量不断扩大。当分布式网络发生故障时，由于不同公司和逆变器系列采用的故障穿越策略和参数不同，光伏电源在故障期间的输出特性也不同。本文建立了光伏发电系统故障穿越的数学模型。在此基础上，分析了不同电压运行条件下光伏发电的输出适应性。进一步研究了分布式电网发生故障时光伏接入点电压的影响。仿真是在IEEE 39总线系统上进行的。结果表明，在分布式网络发生故障时，光伏故障穿越模型能够实现安全穿越，仿真验证了该模型的有效性。此外，故障发生时，接收网电压变化在允许范围内。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2022 IEEE 5th International Electrical and Energy Conference (CIEEC)

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