基于模型预测控制的SVC与STATCOM协调控制器  

SVC and STATCOM Coordination Controller Based on Model Predictive Control

作　　者：李帅虎[1] 向振宇 彭寒梅[1] 李辉[1] 王益 LI Shuaihu;XIANG Zhenyu;PENG Hanmei;LI Hui;WANG Yi(College of Information Engineering,Xiangtan University,Xiangtan 411105,Hunan Province,China;State Grid Xianning Power Supply Company,Xianning 430077,Hubei Province,China)

机构地区：[1]湘潭大学信息工程学院,湖南省湘潭市411105 [2]国家电网湖北省电力有限公司咸宁供电分公司,湖北省咸宁市430077

出　　处：《电网技术》2019年第11期4218-4224,共7页Power System Technology

基　　金：国家自然科学基金项目(51777179);湖南省自然科学基金项目(2018JJ402)~~

摘　　要：随着电力系统电力电子化程度越来越高,不同FACTS装置控制器间存在的交互影响对系统的安全稳定构成更大的威胁。该文通过建立含静止无功补偿器(staticvar compensator,SVC)与静止同步补偿器(staticsynchronous compensator,STATCOM)单机系统的线性化状态空间模型,考虑两者PI控制器的控制特性、运行方式及其整定原则,分析总结了FACTS装置在暂态过程中的负交互影响机理;并提出基于模型预测控制(model predictive control,MPC)代替传统PI环节建立协调控制器,克服了PI控制参数整定困难和难以实现全局优化等缺点。同时,该文在给出该控制器的一般控制结构后,利用控制模型的阶跃响应对比分析PI与MPC的动态过程,分析结果表明该控制器具备良好的控制性能。最后,在PSCAD/EMTDC仿真平台中搭建含SVC与STATCOM的单机无穷大系统的仿真模型。仿真结果显示,在装置运行状态变化和系统暂态扰动条件下控制器具备良好的动态性能,能够有效解决系统控制参数、反馈变量等非线性、强耦合所带来的不利影响。With increasing degree of power electronics in power system, the interaction between controllers of different FACTS devices poses a greater threat to security and stability of the system. In this paper, a linearized state space model with SVC and STATCOM was established, and the negative interaction mechanism of FACTS device in transient process was analyzed and summarized considering control characteristics, operation mode and setting principle of PI controllers. A model predictive control(MPC) is proposed to replace traditional PI link to establish a coordination controller to overcome the difficulties of PI control parameter setting and global optimization. At the same time, after giving the general control structure of the controller, this paper compares and analyzes the dynamic process of PI and MPC using step response of the control model, and analysis results show that the controller has good control performance. Finally, a simulation model of single-machine infinite system with SVC and STATCOM is built in PSCAD/EMTDC simulation platform. Simulation results show that the controller has good dynamic performance under the condition of operation state change and system transient disturbance, and can effectively solve the adverse effects of nonlinear and strong coupling between system control parameters, feedback variables and so on.

关 键 词：静止无功补偿器 静止同步补偿器 协调控制:交互影响:模型预测控制 

分 类 号：TM721[电气工程—电力系统及自动化]