摘要
通信网络、可编程控制器的引入在为微电网控制策略设计提供便利的同时,也增加了系统遭受多种类型扰动的可能性。针对控制通道中存在的未知扰动,定量分析了扰动对基于一致性的常规微电网次级控制策略产生的不利影响。进一步,提出了一种基于自适应积分滑模的微电网次级控制策略,分析了所提分布式控制策略在扰动下的动态性能,理论证明了该策略对未知扰动具有良好的抑制能力。该策略不需已知扰动的任何先验信息或假设扰动符合某种特定类型,可实现对未知扰动的自适应补偿,从而确保在多种类型扰动下微电网频率和电压的恢复以及有功功率的合理均分。仿真实验证实了所提控制策略的正确性与有效性。
The application of communication network and programmable controller not only facilitates the design of control strategy for microgrids, but also increases the possibility of system subjected to various types of disturbance.For the unknown disturbance in the control input channel, the adverse effects of the disturbance on the conventional consensus based secondary control strategy for microgrids are quantitatively analyzed. Furthermore, a distributed adaptive integral sliding mode secondary control strategy is proposed.The dynamic performance of the proposed strategy in the presence of disturbance is investigated, and theoretical analysis proves that the strategy can eliminate the influences of the unknown disturbance. The proposed strategy can adaptively compensate for the disturbance without any prior knowledge or assuming that the disturbance accords with certain distributions, so as to ensure the restoration of frequency and voltage and achieve accurately active power sharing of microgrids. The simulation results illustrate the correctness and effectiveness of the proposed strategy in a variety of scenarios.
作者
马良
许刚
谈元鹏
MA Liang;XU Gang;TAN Yuanpeng(School of Electric and Electronic Engineering,North China Electric Power University,Changping District,Beijing 102206,China;China Electric Power Research Institute,Haidian District,Beijing 100192,China)
出处
《电网技术》
EI
CSCD
北大核心
2022年第1期146-155,共10页
Power System Technology
基金
中央高校基本科研业务费专项资金资助(2019QN111)
国网浙江省电力公司资助项目(5211HZ17000D)。
关键词
微电网
分布式次级控制
自适应策略
滑模控制
未知扰动
microgrids
distributed secondary control strategy
adaptive mechanism
sliding mode control
unknown disturbance
