广域控制系统通信环节影响分析研究

Studyon Communication Network Effect on System Performance of Wide Area Control

随着智能电网技术的不断发展和电网互联规模的不断扩大,电力系统安全稳定控制系统向着广域化、复杂化的趋势逐步演变.为了支持实时广域安全稳定控制系统,迫切需要建设与安全稳定系统紧密耦合的通信基础设施.首先介绍了当前广域安全稳定控制系统配套通信系统的现状以及所面临的挑战.接着分析了通信系统故障对广域控制系统的影响,并结合实际电网的广域直流闭锁故障紧急控制和广域低频振荡阻尼控制等功能实现论证了对高性能通信环节的需求.最后介绍了目前正在研究的安全稳定控制专用网络的系统结构,对未来复杂互联大电网安全稳定控制研究方向进行了初步探索.

With the development of smart grid technology and the expansion of power grid interconnection,thestability control system of power system has gradually evolved towards the trend of being wide area and compli-cate. In order to support real-time wide-area stability control system,it is urgent to build communication infra-structure which is tightly coupled with stability control system. First,this paper introduces the current statusand the challenge of the communication system which supports the wide area stability control system. Then,theinfluence of communication system fault on wide area control system is analyzed,and the demand of high per-formance communication link is demonstrated with applications such as wide area emergency control againstDC blocking fault and wide area low-frequency oscillation damping control. The paper further introduces thesystem structure of the novel communication network which is under research and will be utilized for the stabil-ity control of the complex interconnected large power network in the future.