Risk evaluation method for operation of large power grid

Abstract

The invention belongs to a risk evaluation method for the operation of a large power grid. The method comprises the following steps of (1) statistics of fault and risk factors; (2) computation of risk probability; (3) risk quantitative evaluation based on the load loss; (4) classification and result evaluation on risk index. According to the risk evaluation method for the operation of the large power grid, the occurring probability of power system accidents and the number of load loss of the system are combined to form a new quantitative index, so a scheduling person can be helped to perform real-time risk evaluation and analysis, can further comprehensively master the safe operation condition of the power grid, and controls the risk level of the system within a reasonable range by adopting necessary measures, and the occurrence of the disaster fault is avoided. The real-time evaluation and management and control on the risk are realized by a power gird scheduling center and the method belongs to a load loss-based risk evaluation method for the operation of the large power grid.

Description

technical field [0001] The invention is a method for assessing the operation risk of a large power grid, which belongs to the transformation technology of the method for evaluating the risk of operation of the large power grid. Background technique [0002] The safe operation of the power system is an important guarantee for the healthy development of the social economy. The power system dispatching center needs to make full use of power generation equipment and adjustment methods to provide qualified electric energy to users to ensure system security and smooth operation of the power grid. At present, power system EMS generally adopts a deterministic analysis framework, but this method is difficult to remember the randomness of power system faults, is too conservative, and lacks economy. With the release of the Chinese government's "Regulations on Emergency Response and Investigation and Handling of Electric Power Safety Accidents" (Decree No. 599 of the State Council), po...

AI Technical Summary

Problems solved by technology

[0004] However, at present, dispatching agencies lack mature and convenient risk assessment tools. When performing risk assessment, operators first use traditional power system security and stability calculation software to conduct static and dynamic security analysis of the power grid, and calculate the security and stability of the power grid after a fault (event). Then evaluate the probability of event occurrence according to the provisions of the risk quantitative assessment method, and then obtain the risk value and risk level, and then formulate risk control measures based on operating experience

The above work mainly adopts manual calculation method, the work efficiency is low, and there may be omissions

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