大电网安全可靠运行4级梯度预警预控方法

采取系统、综合、在时间轴上延伸扩展的防御措施是避免大规模停电事故发生的重要途径之一。现有的预警和预防性控制系统大都集中关注于电网运行在线、实时、动态的安全稳定分析和事故防范措施，然而从电网运行生产的全过程出发能更好地实现综合防御的思想。提出一种4级梯度预警预控方法，即运用系统工程的思想在电网运行生产过程的4个重要环节，针对各自的特点开展预警分析和预防性协调控制。以此方法建立的预警预控系统的核心内容是周计划、日计划、操作前和实时4个时间递进环节上的安全稳定分析和有针对性的控制措施。介绍了大电网安全可靠运行4级梯度预警预控系统在河南电网的具体设计实施和关键技术。

A Four-grade Forewarning and Preventive Control Method for Secure and Reliable Operation of Large Scale Power Grid

The systematic, synthetic and sequential preventing measures are one of the important methods of avoiding large-scale blackout. Most of the currently applied forewarning and preventive control systems focus on the dynamic, on-line and real-time security and stability analysis and precautions, but it is considered in this paper that proceeding from the whole process of power grid operation and production will better realize comprehensive prevention. The system engineering concept is applied to four important steps in power grid operation and production for direct security and stability analysis and preventive control. The crux of this method is security and stability analysis and the preventive control measures for four time step-up grades, i.e. weekly planning, daily planning, pre-operation and real time planning. The implementation and key techniques of a four-grade forewarning and preventive control system for secure and reliable operation of Henan power grid is described.