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随着电动汽车的普及,电动汽车充放储一体站接入配电网已成为大势所趋。一体站接入与配电网电能双向互动的同时,也对配电网的电压质量带来了影响。在含一体站的配电网电压质量分布计算中采用了三角形面积密度负荷分布模型,运用改进的多场景方法模拟一体站的四种特性行为,分三阶段进行多场景优化,根据其特点计算出贴合实际的节点电压。算例采用牛顿拉夫逊法对含一体站的配电网进行电压分布计算,验证了角形面积密度负荷分布模型的有效性,并运用该模型分析了不同场景下一体站对配电网节点电压的影响。
With the popularization of electric vehicles, electric vehicles charge and discharge stations integrated access distribution network has become the trend of the times. One station access and distribution network two-way interaction of electricity, but also on the distribution network voltage quality has an impact. Triangular area density load distribution model is adopted in the calculation of voltage quality distribution of distribution network with integrated substation, and the four characteristic behaviors of integrated station are simulated by improved multi-scene method. The multi-scene optimization is carried out in three stages, and according to its characteristics, Fit the actual node voltage. The example uses the Newton-Raphson method to calculate the voltage distribution of the distribution network with integrated station, verifies the validity of the angular area density load distribution model and uses this model to analyze the voltage distribution of grid nodes influences.