基于分布特征参数的城市轨道交通负荷谐波电流迭加系数研究

Study on Harmonic Current Superposition Coefficient of City Rail Transport Load Based on Distributed Characteristic Parameters

为了解决城市轨道交通负荷不同谐波源的同次谐波电流在一条线路的同一相上准确迭加的问题,基于GB/T 14549—1993提供的谐波源相位角不确定时的谐波电流迭加方法,对城市轨道交通负荷测试数据进行了深入挖掘。通过计算不同谐波源之间的谐波电流迭加系数的分布特征数据,确定了城市轨道交通负荷的谐波电流迭加系数,为城市轨道交通负荷接入电网的预评估以及谐波治理提供准确的数据支撑。

In order to solve the problem that same harmonic currents among different harmonic sources in city rail transport loads are accurately superposed at the same phase of one line. Based on the harmonic current superposition method under uncertain phase angle of harmonic source provided by GB/T 14549-1993, test data of city rail transport load are deeply explored. By calculating the distribution characteristic data of harmonic current superposition coefficients among different harmonic sources, harmonic current superposition coefficients of city rail transport loads are obtained, which provide accurate data support for the pre evaluation and harmonic control of city rail transport load access to power grid.