摘要
为了解决自储能多端背靠背柔性直流系统的协调控制与电压稳定问题,提出了一种改进的电压裕度控制策略。首先建立了系统的数学模型,然后针对3种典型的运行场景设计了协调工作机制及其控制方式。基于Lyapunov稳定性理论设计了自适应指令滤波反推电压控制器,解决了系统控制方式切换导致的功率振荡与电压波动问题,改善了系统的稳定性和动态响应性。最后分别对3种典型的运行场景进行仿真分析,验证了所提控制策略和方法的有效性。
In order to solve the problems of coordinated control and voltage stability of SES-VSC-MTDC(Self-Energy Storage based Multi-Terminal back-to-back VSC-HVDC)system,an improved voltage margin control strategy is proposed.Firstly,the system mathematical model is established,and then the coordinated working mechanism and its control mode are designed for three typical operation scenarios.Based on the Lyapunov stability theory,an adaptive command-filtered backstepping voltage controller is designed to solve the problems of power oscillation and voltage fluctuation caused by the switching of system control mode,which im?proves the stability and dynamic response of the system.Finally,the simulation analysis of three typical operation scenarios is carried out to verify the effectiveness of the proposed control strategy and method.
作者
葛乐
张伟
袁晓冬
陈继忠
钟礼海
GE Le;ZHANG Wei;YUAN Xiaodong;CHEN Jizhong;ZHONG Lihai(School of Electrical Engineering,Nanjing Institute of Technology,Nanjing 211167,China;State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems,China Electric Power Research Institute Co.,Ltd.,Beijing 100192,China;Changzhou Power Supply Company of State Grid Jiangsu Electric Power Company Co.,Ltd.,Changzhou 213000,China;Electric Power Research Institute of State Grid Jiangsu Electric Power Company Co.,Ltd.,Nanjing 211103,China)
出处
《电力自动化设备》
EI
CSCD
北大核心
2019年第12期14-20,共7页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(51707089)
国网江苏省电力有限公司科技项目(J2018084)
新能源与储能运行控制国家重点实验室开放基金资助项目(DGB51201801660)~~
关键词
多端背靠背柔性直流系统
自储能
协调控制策略
自适应指令滤波反推控制
电压稳定
multi-terminal back-to-back VSC-HVDC system
self-energy storage
coordinated control strategy
adaptive command-filtered backstepping control
voltage stability
