基于随机模型节点等效的有源配电网电压越限概率分析计算方法

发布时间：2018-06-05 17:57

本文选题：有源配电网 + 电压越限概率　；参考：《中国电机工程学报》2017年16期

【摘要】：为解决考虑分布式电源和负荷双重不确定因素影响下有源配电网电压越限分析计算问题,实现快速在线分析,提出了一种基于随机模型节点等效、离线计算和在线分析相结合的电压越限概率计算方法。通过节点等效的方式,简化配电网络多点随机模型对单个节点电压幅值的综合影响分析,降低网络运行状态的变量表达形式。以降维后的等效随机变量为基础,选取典型离散状态,离线计算并保存典型离散状态下的电压越限概率。最后在运行中,计算实际运行状态下的各节点等效随机变量,查找离线存储的随机变量相邻值状态和计算结果,进行多维拉格朗日插值。IEEE 33节点测试系统的计算结果验证了所提方法的有效性和实用性。
[Abstract]:In order to solve the problem of voltage overrun analysis and calculation of active distribution network under the influence of both distributed power generation and load uncertainty, a new node equivalence method based on stochastic model is proposed to realize fast on-line analysis. The calculation method of voltage overrun probability combining offline calculation and on-line analysis. By means of node equivalence, the comprehensive influence analysis of multi-point stochastic model on the voltage amplitude of a single node is simplified, and the variable expression of network running state is reduced. Based on the equivalent random variable after dimensionality reduction, the typical discrete state is selected, and the voltage overrun probability under typical discrete state is calculated and saved off-line. Finally, in the operation, the equivalent random variables of each node in the actual running state are calculated, and the adjacent value states of the off-line stored random variables and the calculation results are found. The validity and practicability of the proposed method are verified by the calculation results of the multi-dimensional Lagrange interpolation. IEEE 33 bus test system.
【作者单位】：中国电力科学研究院配电研究所;
【基金】：国家自然科学基金资助项目(51377148) 国家电网公司科技项目(PD71-15-043)~~
【分类号】：TM727;TM74

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