考虑区间耦合和无功均衡的二级电压控制器设计

发布时间：2018-01-04 23:26

本文关键词：考虑区间耦合和无功均衡的二级电压控制器设计　出处：《电工技术学报》2017年06期 　论文类型：期刊论文

【摘要】：为了使受控发电机无功出力均衡并消除区域间耦合带来的主导节点电压振荡,提出基于自适应动态规划法的二级电压控制器设计方法。构建了反映主导节点电压偏差和无功均衡的效用函数,对未来时间效用函数累加建立代价函数。二级电压控制器由评价网络和执行网络组成,均采用BP神经网络实现。控制器设计采用先离线学习、后在线应用模式。根据Bellman最优化原理,迭代训练评价网络和执行网络。引入动量因子,消除区域间耦合导致的主导节点电压振荡。通过某省级电网仿真证明了所提方法的正确性和有效性。
[Abstract]:In order to equalize reactive power output of controlled generator and eliminate the dominant node voltage oscillation caused by inter-region coupling. Based on adaptive dynamic programming method, the design method of two-stage voltage controller is proposed, and the utility function reflecting voltage deviation and reactive power equalization of dominant node is constructed. The cost function is built up for the future time utility function. The two-stage voltage controller is composed of evaluation network and executive network, both of which are realized by BP neural network. The controller is designed by off-line learning. Based on Bellman optimization principle, iterative training evaluation network and execution network are introduced. Momentum factor is introduced. The voltage oscillation caused by inter-region coupling is eliminated and the correctness and effectiveness of the proposed method are proved by a provincial power network simulation.
【作者单位】：华南理工大学电力学院;
【基金】：国家自然科学基金资助项目(51277078)
【分类号】：TM761.12
【正文快照】： 0引言针对无功功率不能长距离传输、无功电压分散控制的特点,法国电力公司于20世纪70年代提出了以先导节点和控制分区为基础的分级电压控制方案,一般分为三级电压控制[1]。其中,二级电压控制器通过某种控制策略,设置区域内受控无功电源的电压参考值,以维持区域的主导节点电压

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