Full voltage sequence integrated power grid reliability and risk evaluation method

Abstract

The invention disclose a full voltage sequence integrated power grid reliability and risk evaluation method, belonging to the technical field of power system reliability analysis. Based on the real-time data calculation of the power grid and depending on the advantage of online safety and stability analysis and calculation, the method provided has the advantages of reliable calculation result and quick calculation speed and effectively reduces the problems of large data bulk and long time consumption of calculation caused by the random simulation of a conventional sampling algorithm. Through the information exchange between the transmission and distribution network reliability evaluation systems, the integrated evaluation of the full voltage sequence power grid can be carried out, and thus greatly improving the accuracy of the power grid evaluation, and overcoming the defects of inaccurate evaluation result and repeated evaluation due to the isolation of power grids in different voltage grades; the risk evaluation and prevention and control decisions of the real-time operation of the power grid take into account the power generation / load reduction cost, so that the balance of the reliability and economy of the real-time operation of the power grid can be solved. The method greatly promotes the engineering application of the large power grid in the reliability evaluation and management technology.

Description

technical field [0001] The invention belongs to the technical field of power system reliability analysis, and in particular the invention relates to an evaluation and management method of power grid operation reliability. Background technique [0002] With the rapid development of the economy, the scale of the power grid is getting larger and its structure is becoming more and more complex, and the system is constantly developing towards ultra-high voltage, long-distance and large-capacity. In recent years, my country has initially formed a UHV AC-DC and multi-DC hybrid pattern. In the future, the UHV AC-DC, multi-DC long-distance, and large-capacity transmission pattern will be further enhanced. The interaction between them is more prominent. [0003] Power system reliability assessment runs through the entire process of power system planning, design, and operation. Due to the large number of power system equipment and large scale, current reliability research is mainly car...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a reliability and risk assessment method for the full voltage sequence integrated power grid in order to solve the reliability and risk assessment problem of the full voltage sequence integrated power grid in the prior art, which can realize the full voltage sequence level of the power system Grid reliability and risk assessment to improve power system reliability

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