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Research on Voltage Rise Risk Assessment Model and Method for Distribution Network with Distributed Generation

机译：分布式发电的配网升压风险评估模型与方法研究

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Distributed generation (DG) has great influences on the operation of distribution network. Voltage rise is one of the important influences. To evaluate the potential voltage rise risk of distribution network with DG, a modified 2-point estimate method is proposed to calculate the probabilistic load flow so that the probabilistic statistic values of voltages can be obtained. Combing with theory of semi-invariant and Cornish-Fisher series expansion, the probability distribution function curves and the probability of voltage rise are obtained. The probabilistic evaluation index and evaluation criterion for voltage rise risk of the distribution network with DG are proposed in the paper. Finally, the rationality and effectiveness of voltage rise risk assessment method are verified with IEEE 39-bus distribution network. The simulation results show that the voltage rise risk in distribution network with DG is related to the access capacity and location of DG.
机译：分布式发电（DG）对配电网络的运行有很大的影响。电压上升是重要的影响之一。为了用DG评估配电网的潜在电压上升风险，提出了一种改进的两点估计方法来计算概率潮流，从而可以获得电压的概率统计值。结合半不变和康沃尔-菲舍尔级数展开的理论，获得了概率分布函数曲线和电压上升的概率。提出了分布式配电网电压上升风险的概率评价指标和评价标准。最后，通过IEEE 39总线配电网络验证了电压上升风险评估方法的合理性和有效性。仿真结果表明，带有DG的配电网中的电压上升风险与DG的接入容量和位置有关。

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