含新能源直流电网的状态反馈控制  

State feedback control of DC grid with renewable energy

作　　者：刘先正[1] 王兴成[1] 温家良 李金元 张强[1] 

机构地区：[1]大连海事大学信息科学技术学院,辽宁大连116026 [2]国网智能电网研究院,北京102211

出　　处：《电力系统保护与控制》2016年第14期115-121,共7页Power System Protection and Control

基　　金：国家重点基础研究发展计划项目(973项目)(2012CB215204)~~

摘　　要：为适应直流电网智能、高效、经济地运行,实现网络中不同分布式电源、客户端的协同运行,基于六端树状直流电网物理仿真平台需求提出了一种适用于含新能源并网的电网系统级控制策略。将该六端电网视为一个多输入多输出的系统,利用键图方法提取出网架的状态空间方程,分析该系统的动态特性后确定闭环极点配置的优化目标,并提出用线性系统综合的方法设计了状态反馈控制器。最后,在Matlab/Simulink仿真平台中搭建了该模型,并与传统主从裕度控制方法做了仿真对比。结果显示所提状态反馈控制器对新能源带来的电压波动具有明显抑制效果。In order to adapt to the intelligent, efficient, economic operation of DC grid, to realize cooperation of different distributed power supply and load, based on demand of six terminal tree DC grid physical simulation platform, a system level coordinated control strategy suitable for renewable connected grid is proposed. The six terminal grid is regarded as a multi input multi output system, bond graph method is utilized to extract state space equation of the grid, after analyzing the dynamic characteristics of the system, the optimal target of closed-loop poles placement is determined, and linear system integration method is proposed to design the state feedback controller. Finally, the model in Matlab/Simulink platform is built, compared with traditional master-slave margin controller, simulation result of the proposed state feedback controller has obvious inhibitory effect on voltage fluctuation brought by renewable energy.

关 键 词：直流电网 键图法 状态反馈控制 主从裕度控制 

分 类 号：TM721.1[电气工程—电力系统及自动化]