Method for processing static voltage stability risk information of power transmission system

Abstract

The invention relates to a method for processing static voltage stability risk information of a power transmission system. The method comprises the steps as follows: forming a system accident state set I; 2), sequentially extracting a system accident state from the system accident state set I; 3), judging whether the accident state can maintain the static voltage stability if yes, performing step 5), and otherwise, classifying the accident state to a set S1; 4), adopting a minimum load-shedding optimization model to perform optimization, and judging whether the load of an optimized system is required to be removed, if not, directly performing the next step, and if yes, performing next step after the system accident is classified to a set S2; 5), judging whether the system accident states in the system accident state set I are completely enumerated, and if yes, performing the next step, otherwise, returning the step 2); and 6), calculating probability and a system risk value of each accident state in the set S1 and the set S2. Compared with the prior art, the method has the advantage of high accuracy.

Description

technical field [0001] The invention relates to an information processing method, in particular to a method for processing static voltage stability risk information of a power transmission system. Background technique [0002] In recent years, there have been many power system blackout accidents caused by voltage stability problems. The 8-14 blackout in North America is an example of a large-scale power outage in the system due to voltage collapse. In my country, on the one hand, due to the interconnection of large-scale power grids, the system network structure is becoming increasingly complex; on the other hand, there are a number of hydropower stations and pithead power stations far away from the load center in the system, and a large amount of electric energy needs to be transmitted over long distances. and generally lacking. To a large extent, it increases the difficulty of ensuring the stable and safe operation of the system voltage, and it is necessary to pay more at...

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Problems solved by technology

In my country, on the one hand, due to the interconnection of large-scale power grids, the system network structure is becoming increasingly complex; on the other hand, there are a number of hydropower stations and pithead power stations far away from the load center in the system, and a large amount of electric energy needs to be transmitted over long distances. and generally lack

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