Monitoring method and system for ensuring safe operation of electric network

Abstract

The invention discloses a monitoring method and system for ensuring the safe operation of an electric network. The method comprises the following steps that: a main station obtains excitation information and primary frequency modulation information of each machine set, which are collected by each PMU (Power Management Unit) sub station in real time; the main station stores the collected real-time information into a real-time database and carries out quantitative calculation and analysis on the real-time information to obtain monitoring information of primary frequency modulation; and the main station converts the monitoring information into chart information to be displayed through client equipment. When the method and the system provided by the embodiment of the invention are adopted, the real-time monitoring of the excitation and the primary frequency modulation parameters can be realized, further, a large amount of in-time accurate data can be provided for the monitoring and the checking of the excitation and the primary frequency modulation of a grid machine set, and the accuracy and the effectiveness of the checking can be ensured.

Description

technical field [0001] The invention relates to the technical field of power grid security, in particular to a monitoring method and system for ensuring safe operation of a power grid. Background technique [0002] Since the power outage in the United States and Canada on August 14, 2003, more than ten power outages have occurred around the world. The large-scale failure of the power grid has caused serious political, economic and social impacts, and even endangered national security. A number of major blackout accident analysis reports pointed out that during the accident, the dispatching control center presented a situation of "a lot of data and insufficient information", which made dispatchers not deal with it in time, leading to subsequent chain failures and eventually leading to a major blackout. With the implementation of national networking, west-to-east power transmission, and north-south mutual supply projects, the scale of my country's power grid is getting larger ...

AI Technical Summary

Problems solved by technology

[0005] Since one-time frequency regulation may cause the unit to adjust frequently with frequency changes, affecting the stability of the load, how to monitor the primary frequency regulation parameters has become a problem to be solved

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