System and method for deciding power shedding load based on line breaking fault rate prediction

Abstract

The invention discloses a system for deciding the power shedding load based on line breaking fault rate prediction, which comprises an SCADA (Supervisory Control And Data Acquisition) system, a power meteorological on-line service system, a database server, an application server and a human-machine interconnected subsystem, wherein the SCADA system and the power meteorological on-line service system are accessed into the database server which is accessed into the human-machine interconnected subsystem through the application server; and finally, the human-machine interconnected subsystem is accessed into the SCADA system. The invention also discloses a load shedding method of a power system, which comprises the steps of on-line electric value data and real-time meteorological data acquisition, extreme value probability prediction of line breaking faults of a power transmission line, random optimizing, scheduling and modeling, sampling average approximate treatment of line transmission power chance constraint, differential evolution solving of a model and optimal load shedding capacity calculation. The invention has high calculation speed and high accuracy, thoroughly solves the technical problem of the random optimization scheduling of uncertain line breaking faults under extreme meteorological disaster and provides a reliable theoretical basis for a load shedding decision of the power system under the extreme meteorological disaster.

Description

technical field [0001] The invention relates to a power shedding decision-making system and method based on the probability prediction of disconnection failure, which is especially suitable for the power shedding decision-making of the power system under extreme meteorological disasters. Background technique [0002] Since the large-scale construction of overhead transmission lines began, power system accidents caused by natural disasters have occurred frequently, which not only seriously affected the safe and stable operation of the power system, but also caused huge losses to the national economy. According to statistics, in my country's annual power system accidents, system failures caused by extreme meteorological disasters account for more than 30%, and this proportion is increasing year by year. In order to ensure the safe operation of the power system and reduce power outage losses, the power system should strengthen accident response measures and study reasonable opt...

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Problems solved by technology

At present, there is no report on the power load shedding decision-making system and method based on the prediction of disconnection failure probability under extreme weather disasters

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