Robust LFC Strategy for Wind Integrated Time-Delay Power System Using EID Compensation

Robust LFC Strategy for Wind Integrated Time-Delay Power System Using EID Compensation
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使用 EID 补偿的风电集成时滞电力系统的鲁棒 LFC 策略

DOI:
10.3390/en12173223
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发表时间:
2019-08
期刊:
影响因子:
3.2
通讯作者:
Zou Runmin
Zou Runmin
中科院分区:
工程技术4区
文献类型:
--
作者:
Liu Fang;Zhang Kailiang;Zou Runmin

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提出了一种自抗扰控制(ADRC)方法,用于考虑通信时延的风电并网系统的负荷频率控制。为了提高频率控制的稳定性,采用等效输入扰动(EID)补偿来消除负载变化的影响。在风力发电系统中,设计了两个区域控制器来保证整个闭环系统的稳定性。首先,建立了风电并网时滞电力系统的简化频率响应模型。然后利用状态观测器建立闭环系统的状态空间模型。系统的稳定性条件和控制器参数可以通过线性矩阵不等式(LMI)的形式求解。最后,利用MATLAB/SIMULINK软件对该控制器进行了仿真,仿真结果表明了该控制器的鲁棒性和有效性。
This paper presents an active disturbance rejection control (ADRC) technique for load frequency control of a wind integrated power system when communication delays are considered. To improve the stability of frequency control, equivalent input disturbances (EID) compensation is used to eliminate the influence of the load variation. In wind integrated power systems, two area controllers are designed to guarantee the stability of the overall closed-loop system. First, a simplified frequency response model of the wind integrated time-delay power system was established. Then the state-space model of the closed-loop system was built by employing state observers. The system stability conditions and controller parameters can be solved by some linear matrix inequalities (LMIs) forms. Finally, the case studies were tested using MATLAB/SIMULINK software and the simulation results show its robustness and effectiveness to maintain power-system stability.
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