基于电力弹簧的微电网分布式发电协同控制  

Collaborative Control of Microgrid Distributed Generation Based on Electric Springs

作　　者：李天慧[1] 周杨[1] 张健[1] 吕潇 马刚[1] LI Tianhui;ZHOU Yang;ZHANG Jian;LU Xiao;MA Gang(Nanjing Normal University,Nanjing,Jiangsu,210023,China)

机构地区：[1]南京师范大学

出　　处：《广东电力》2020年第1期33-42,共10页Guangdong Electric Power

基　　金：国家自然科学基金项目(51607093)

摘　　要：针对微电网运行时的电压和频率波动问题,建立了基于电力弹簧的分布式发电协同控制方法,以保证微电网的稳定运行。首先,基于电力弹簧的基本原理建立功率控制模型,利用电力弹簧的相位和幅值同时可控的特点,分析电力弹簧的四象限特性;在此基础上,设计了电力弹簧有功/无功协同控制方法,基于离散一致性算法,提出一种电力弹簧接入微电网的分布式发电协同控制策略;最后,通过MATLAB/Simulink仿真验证了微电网中发生电压突变、分布式发电功率突变以及负载功率突变3种情况下该控制策略的有效性,对比分析有无电力弹簧接入下系统电压和频率波动情况。实验证明:电力弹簧可以通过同时进行有功/无功补偿来有效解决微电网中分布式电源和负载变化引起的电压、频率波动,保证微电网的稳定运行。To solve the problems of voltage and frequency fluctuation in micro-grid operation,this paper establishes a collaborative control method for microgrid distributed generation based on electric springs to ensure stable operation of the microgrid.Firstly,on the basis of the basic principle of the electric spring,it builds a power control model and uses the simutaneously controllable characteristic of the phase and amplitude of the electric spring to analyze the four-quadrant characteristic of the electric spring.Then it designs the collaborative control method for active power and reactive power of the electric spring,and based on the discrete consistency algorithm,it proposes a collaborative control strategy for distributed generation of the microgrid with electric spring.Finally,by using MATLAB/Simuling software,it makes simulation and verifies validity of this strategy in three cases including voltage mutation,distributed generation power mutation and load power mutation,and comparatively analyzes voltage and frequency fluctuation of the system with and without the electric springs.The experiment proves that the electric spring can effectively solve the problems of voltage and frequency fluctuation caused by distributed power supply and load variation in the microgrid by simultaneously performing active/reactive compensation,and ensure stable operation of the microgrid.

关 键 词：微电网 电力弹簧 分布式发电 协同控制 离散一致性算法 

分 类 号：TM73[电气工程—电力系统及自动化]