基于能量整形的先进静止无功发生器(ASVG)控制器设计  

Novel ASVG controller design for stability improvement via energy shaping

作　　者：梁志珊[1] 谢争先[2] 张化光[2] 

机构地区：[1]中国石油大学机电工程学院,北京102249 [2]东北大学信息科学与工程学院,辽宁沈阳110004

出　　处：《继电器》2007年第19期50-55,59,共7页Relay

基　　金：教育部科学技术研究重点项目资助(104117)

摘　　要：建立了适合能量整形和考虑系统调节动态的简化ASVG三阶模型,首次应用能量整形IDA-PBC方法设计了先进静止无功发生器(ASVG)的闭环稳定控制器。能量整形IDA-PBC方法直接使用系统能量作为存储函数,物理意义明确,较其它非线性控制器结构简单,并避免了可能产生的不期望的高增益问题,由于设计中完整地保留了系统非线性结构,不需进行任何线性化处理,较各种线性化设计方法具有更强的鲁棒性,适应系统模型和参数不精确程度效果较好。给出的仿真算例表明所提出的ASVG控制器能够在系统发生大的扰动后,ASVG安装点电压和电容器的直流电压能尽快恢复正常,控制方案有效可行。In this paper, a novel ASVG controller is first presented for power system transient stability improvement via energy-shaping IDA-PBC method, The main contributions include the establishment of a three order simplified ASVG model, which is more suitable for energy shaping method and a consideration of the dynamic effect of ASVG regulation as well, The proposed IDA-PBC passive stabilizer uses the real energy function of power system as the close loop Hamiltonian function in simple structure. Since the system nonlinear characteristics are completely preserved, the proposed ASVG IDA-PBC controller is more robust than linear control method. Also a feasible scheme is proposed to employ the control strategy after considering the physical structure of power system. The proposed strategy and method are proved to be effective by the results of digital simulation, fast recovery of AC voltage where ASVG is installed and fast recovery of DC voltage across the capacitor after the disturbance.

关 键 词：能量整形 哈密顿系统 先进静止无功发生器(ASVG) 

分 类 号：TM761[电气工程—电力系统及自动化]