A Probability Calculation Method of Voltage Beyond Limits Based on Node Equivalence of Stochastic Power Model in Active Distribution Network

被引：0
|
作者：
Gao F. [1 ]
Song X. [1 ]
Li J. [1 ]
Zhang Y. [1 ]
Zhao S. [1 ]
机构：
[1] Power Distribution Department, China Electric Power Research Institute, Haidian District, Beijing
来源：
| 2017年 / Chinese Society for Electrical Engineering卷 / 37期
基金：
中国国家自然科学基金;
关键词：
Active distribution network; Distributed generation; Node equivalence; Off-line calculation; On-line analysis; Voltage beyond limits probability;
D O I：
10.13334/j.0258-8013.pcsee.160679
中图分类号：
学科分类号：
摘要：
To solve the analysis and calculation problem of voltage beyond limits under the uncertainty influence of the distributed generation and load in active distribution network, a probability calculation method of voltage beyond limits, combined off-line calculation and on-line analysis, was proposed. The node equivalent method is used to weaken the effect of multi-node stochastic power model on single node voltage amplitude, and reduce the variable dimension of network operation state. Then the typical discrete states are selected and the probability of voltage beyond limits is calculated. And the off-line calculation is completed after the related data storage. In practice operation, the equivalent stochastic variables under existing condition are obtained with node equivalent method. And the adjacent states in off-line data base are extracted to carry out multi-dimension Lagrange interpolation, so the each node probability of voltage beyond limits can be obtained in the on-line analysis process. The validity and practicability of the proposed method are verified by the comparison with the traditional stochastic load flow method in the IEEE 33 node test system. © 2017 Chin. Soc. for Elec. Eng.
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页码：4641 / 4649
页数：8
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