带输出误差约束的单机电力系统自适应控制  

Adaptive Control for Single-machine Power System with Output Tracking Error Constraint

作　　者：祝国强 王婷 王顺江 吉爽 孙灵芳[1,2] ZHU Guo-qiang;WANG Ting;WANG Shun-jiang;JI Shuang;SUN Ling-fang(School of Automation Engineering,Northeast Electric Power University,Jilin 132012,China;Jilin Province International Research Center of Precision Drive and Intelligent Control,Jilin 132012,China;State Grid Liaoning Electruic Power Supply Co.,Ltd.,Shenyang 116011,China)

机构地区：[1]东北电力大学自动化工程学院,吉林吉林132012 [2]吉林省精密驱动与智能控制国际合作研究中心,吉林吉林132012 [3]国网辽宁省电力有限公司,辽宁沈阳116011

出　　处：《控制工程》2022年第5期772-780,共9页Control Engineering of China

基　　金：吉林省科技发展计划项目(20210509053RQ)。

摘　　要：针对带有静止无功补偿器(SVC)的单机无穷大电力系统,提出了一种自适应动态面与积分滑模控制相结合的控制方案,有效地克服了参数不确定性和外部扰动的影响,确保了系统跟踪误差能够在有限时间内收敛到稳定状态,提高了系统的收敛速度和跟踪精度。通过引入误差转换函数,使得功角的跟踪误差性能指标保持在预定的范围内。采用最小参数学习法在线估计径向基函数神经网络(RBFNN)理想权值向量的范数,避免了神经网络因估计自身权值向量维数增加而引起的“维数灾难”问题,极大减轻了控制器的计算负担。控制算法通过StarSim电力电子实时仿真实验平台进行实验验证,实验结果表明了所提控制方案的有效性。A control scheme combining adaptive dynamic surface and integral sliding mode is proposed for single-machine infinite-bus power system with static var compensator(SVC). Considering the uncertainty of system parameters and external disturbance, the dynamic surface method and integral sliding mode are combined to ensure that the tracking error of the system converges to a predetermined range in finite time,which improves the convergence speed and tracking accuracy of the system. By introducing an error transformation function, the tracking error of the power angle is kept within a predetermined range. The minimum parameter learning method is used to estimate the norm of the ideal weight vector of the radial basis function neural network(RBFNN) online, which avoids the “dimension disaster” problem caused by the increase of the dimension of weight vector, and reduces the computational burden of the controller. The proposed control algorithm is verified on the StarSim power electronics real-time simulation platform, and the experimental results show the effectiveness of the proposed control scheme.

关 键 词：单机无穷大电力系统 静止无功补偿器 动态面 积分滑模 误差性能函数 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]