基于鲁棒下垂控制策略的微网平滑切换  

Smooth Switching of Microgrid Operation States Based on Robust Droop Control Strategy

作　　者：米阳[1] 夏洪亮[1] 符杨[1] 王成山[2] 

机构地区：[1]上海电力学院电气工程学院,上海市杨浦区200090 [2]天津大学电气与自动化工程学院,天津市南开区300072

出　　处：《电网技术》2016年第8期2309-2315,共7页Power System Technology

基　　金：国家自然科学基金资助项目(61403246);中国博士后科学基金研究项目(2014M560187)~~

摘　　要：针对传统下垂控制作用下微网的运行状态平滑切换问题,利用滑模控制算法设计新的鲁棒下垂控制策略,通过增加滑模补偿控制环节来提高传统下垂控制的鲁棒性。首先采用相角-电压设计下垂控制,然后根据下垂控制结构和有功功率动态方程,建立非线性状态空间方程,应用滑模控制算法设计非线性补偿控制器,将该控制器产生的补偿信号附加到电压环上,使得微网运行状态切换时的功率振荡减小,保证微网暂态运行稳定性。算例结果验证了所提策略的有效性。For improving smooth switching of microgrid operation states with droop control, a new robust droop control strategy is designed with a supplementary sliding mode controller to enhance system stability. This paper adopts angle-voltage droop control and sets up state space equation based on droop control structure and real power dynamic equation. In addition, a supplementary nonlinear controller is designed with sliding mode control method to mitigate angle chattering caused by microgrid operation state switching, so that system stability and response rapidity is guaranteed. Simulation results obtained from Matlab platform show validity of the proposed scheme.

关 键 词：微网 下垂控制 非线性 滑模控制 

分 类 号：TM72[电气工程—电力系统及自动化]