基于集中式与分布式的信息物理融合微电网电压频率二次恢复控制仿真研究

Simulation of Centralized and Distributed Control of Voltage and Frequency Secondary Restoration in Cyber-physical Microgrid

随着分布式清洁能源的普及,通信技术在协调各个分布式电源的控制中显得尤为重要。在电力信息传输的过程中,不同的网络状态下表现出不同的通信特性,严重的甚至会发生信息错乱丢包等行为,这对电网的实时控制产生严重影响。为研究信息系统对电力物理系统的实时影响,搭建了电力信息物理融合仿真平台,运用RT-LAB与OPNET两款实时仿真器,通过TCP/IP进行数据交互,对微电网电压、频率的集中式恢复与分布式恢复问题展开研究。仿真结果表明,该平台能有效地反映通信网络对电网控制的影响,提供了一种可靠的未来电力信息物理融合系统研究技术。

With the development of distributed clean energy,communication technology has become particularly important to the control of various distributed power sources.In power information transmissions,different network states show different communication characteristics.In particularly unfavorable network scenarios,information disorder and packet loss may occur,with significant impacts on the realtime control of the power system.To investigate the impact of the information system on real-time power system control,this paper presents a co-simulation platform for a cyber-physical power system(CPPS).This platform combines two real-time simulators,OPAL-RT and OPNET,in which the data interact through TCP/IP protocol.This platform is used to study the centralized and distributed restoration of voltage and frequency in a microgrid.The simulation results show that the platform can effectively model the influence of the communication network on real-time control and thereby provides a reliable platform for future studies of CPPSs.