温控负荷不确定时滞下微网电压稳定鲁棒控制  

RESEARCH ON ROBUST CONTROL OF MICRO-GRID VOLTAGE STABILITY UNDER TIME-VARYING UNCERTAINTIES OF TEMPERATURE CONTROLLED LOAD

作　　者：张铁岩 程珊珊 回茜 关明 贺欢 孙鹏[1] Zhang Tieyan;Cheng Shanshan;Hui Qian;Guan Ming;He Huan;Sun Peng(Faculty of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China;State Grid Liaoning Electric Power Research Institute Customer Service Center,Shenyang 110004,China;State Grid Liaoning Electric Power Supply Co.Ltd.Anshan Electric Power Co.,Ltd.,Anshan 114000,China)

机构地区：[1]沈阳工业大学电气工程学院,沈阳110870 [2]国网辽宁省电力有限公司客户服务中心,沈阳110004 [3]国网辽宁省电力有限公司鞍山供电公司,鞍山114000

出　　处：《太阳能学报》2021年第4期101-106,共6页Acta Energiae Solaris Sinica

基　　金：国家重点专项基金(2017YFB0902100);国家电网公司科技项目(2018YF-06)。

摘　　要：针对温控负荷的不确定时滞特性对微网电压稳定的影响,提出基于T-S模糊模型的微网电压稳定鲁棒控制方法。在微网温控负荷不确定时滞特性建模研究的基础上,建立电压稳定T-S模糊系统控制模型,并设计微网无功模糊反馈控制器,使得系统在无外部干扰条件下,通过无功调节保持电压稳定性。基于电压稳定T-S模型,研究考虑微网内其他负荷的突然增减或动力设备的起停等外部扰动下的电压稳定机理,建立微网电压稳定性H∞鲁棒控制方法。研究改进后的三机九节点微网温控负荷不确定时滞仿真系统模型,通过算例仿真,对提出的电压稳定控制方法进行验证。仿真结果表明,基于T-S模糊模型的温控负荷不确定时滞下的H∞鲁棒控制能有效提高微网电压稳定性能。Aiming at the influence of uncertain time delay characteristics of temperature control load on the voltage stability of microgrid,a robust control method of voltage stability of microgrid based on T-S fuzzy model is proposed.In this paper,based on the modeling research of time-delay characteristics of uncertain temperature control of microgrid,a voltage stabilization TS fuzzy system control model is established,and a microgrid reactive power fuzzy feedback controller is designed to keep the voltage stability by reactive power regulation when without external disturbance.Voltage stability is maintained by reactive power regulation.Based on the voltage-stabilized T-S model,the voltage stability mechanism under external disturbance such as the sudden increase or decrease of other loads in the microgrid or the start-stop of the power plant is considered.A robust control method for microgrid voltage stability H∞is established.The improved three-machine nine-node microgrid temperature-controlled load uncertain time-delay simulation system model is studied.The proposed voltage stability control method is verified by numerical simulation.The simulation results show that the H-robust control under temperature-control load uncertainty with time delay based on the T-S fuzzy model can effectively improve the voltage stability of the microgrid.

关 键 词：微网 温控负荷 T-S模糊模型 鲁棒控制 不确定时滞 电压稳定 

分 类 号：O325[理学—一般力学与力学基础] TK79[理学—力学]