SMES装置用电压源型变流器双闭环功率控制系统设计  

Design of double closed-loops control system of VSC used in SMES device

作　　者：辛征[1] 魏莉 施啸寒[2] XIN Zheng;WEI Li;SHI Xiaohan(School of Information and Electrical Engineering,Shandong Jianzhu University,Jinan 250101,China;Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University,Jinan 250061,China)

机构地区：[1]山东建筑大学信息与电气工程学院,山东济南250101 [2]山东大学电网智能化调度与控制教育部重点实验室,山东济南250061

出　　处：《电力自动化设备》2018年第12期168-173,193,共7页Electric Power Automation Equipment

基　　金：山东省自然科学基金资助项目(ZR2017QEE015);山东建筑大学博士科研基金资助项目(XNBS1707)~~

摘　　要：基于PI控制器的双闭环功率控制系统简单可靠,但存在理论参数控制效果不理想、参数进一步调整缺乏系统方法的问题。针对该问题,以超导磁储能(SMES)装置中较常采用的电压源型变流器(VSC)为对象,研究其双闭环功率控制系统中PI参数的设置方法。首先给出SMES系统中VSC数学模型及控制系统结构,并基于二阶最佳整定思想推导各环PI控制器理论参数的计算式;然后以传递函数及根轨迹为工具,分析各环PI控制器参数变化对各环动态特性的影响规律,并据此总结参数调整步骤;最后通过仿真算例验证理论分析的合理性和参数调整步骤的有效性。The double closed-loops control system based on PI controller is simple and reliable,but has the problems such as unsatisfactory control effect of the theoretical PI parameters and lack of systematic methods for further parameter adjustment. In order to solve these problems,the VSC(Voltage Source Converter)often used in the SMES(Superconducting Magnetic Energy Storage)devices is taken as the object to study the design method of double closed-loops control system of VSC. Firstly,the mathematical model and the control system structure of VSC in SMES system are given,and the formulas of PI parameters are induced based on the two-order best adjustment methodology. Secondly,the impact of PI parameters on the dynamic performance of each control loop is analyzed with the transfer function and root locus as the tools,and then the systematic steps of PI parameters adjustment are summarized. Finally,the case simulation verifies the rationality of theoretical analysis and the effectiveness of the parameters adjustment steps.

关 键 词：超导磁储能 电压源型变流器 双闭环 功率控制 PI参数调整 根轨迹分析 

分 类 号：TM46[电气工程—电器]