基于自抗扰控制技术的微网运行控制器  

Micro Grid Operation Controller Based on ADRC

作　　者：徐晓宁[1,2,3] 周雪松[1,2,3] 马幼捷[2,3] 高志强[2,3] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072 [2]天津理工大学自动化学院,天津300384 [3]天津市复杂控制理论及应用重点实验室,天津300384

出　　处：《高电压技术》2016年第10期3336-3346,共11页High Voltage Engineering

基　　金：国家自然科学基金(50877053)~~

摘　　要：随着微网技术的成熟和发展,微网将不再局限于实验平台和示范工程,微网与大电网之间的友好协作变得至关重要。为此,将自抗扰控制技术(ADRC)的思想应用到了微网的并网控制中,设计了一种使微网在并网与孤岛之间切换以及负荷扰动等运行状况下,与大电网之间稳定和平滑协作的二阶非线性ADRC运行控制器;通过仿真验证,基于ADRC的微网运行控制器对网内电压、电流控制可以达到无相位差平滑控制,且频率波动范围满足国际标准±0.1 Hz的要求,控制效果优于传统的基于PID的控制器。与此同时,利用李雅普诺夫稳定性方法证明了该二阶ADRC中三阶扩张状态观测器(ESO)的稳定性问题。With the maturity and development of the micro grid technology, it should be widely used in practice, and it becomes more and more crucial that micro grid should cooperate friendly with the power grid. Consequently, we put forward a new micro grid running control method based on ADRC, which realized the cooperation with stability and smoothness under the several running states, such as grid-connected mode to island mode, island mode to grid-connected mode, and load disturbance changing mode. Some simulation was done to verify this thought and showed the better control effect than PID controller in the inspect of no phases control of the voltage and the current, and the power waved in ±0.1 Hz, which satisfied the requirements of the International Standard. Moreover, the stability of the third-order ESO in second-order ADRC is proved with Lyapunov stability theory.

关 键 词：微网 并网 孤岛 扰动 自抗扰控制技术 PID 李雅普诺夫 三阶ESO 

分 类 号：TM571[电气工程—电器]