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电网技术  2015 

含分布式电源配电网的短路电流计算方法研究

DOI: 10.13335/j.1000-3673.pst.2015.07.032, PP. 1977-1982

Keywords: 分布式电源,配电网,短路电流计算,故障特性

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Abstract:

分布式电源接入配电网将对配电网的短路电流水平产生一定的影响。基于电机型和换流器型分布式电源的短路电流特性,得到分布式电源在配电网发生短路时的等效模型。将包含分布式电源在内的所有电源处理为故障电流源,将故障网络分解为正常分量网络和故障分量网络,按照节点电压方程分别计算短路电流的正常分量和故障分量,可得到不同短路类型下的短路电流。通过示例系统仿真结果的对比分析,验证了所提方法的有效性。该方法可应用于大规模配电网络短路电流的计算机求解。

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