Reliability evaluation method, device and apparatus of high-voltage direct-current power transmission system, and medium

Abstract

The invention discloses a reliability evaluation method, device and apparatus for a high-voltage direct-current transmission system, and a medium, and the method comprises the steps: obtaining the annual reliability index sample number and a first counter of the high-voltage direct-current transmission system, then judging whether the first counter is larger than the annual reliability index sample number or not, calculating an annual reliability index sample of the high-voltage direct-current power transmission system, and finally obtaining a probability density distribution result of the reliability index of the high-voltage direct-current power transmission system according to the annual reliability index of the high-voltage direct-current power transmission system and a preset kernel density estimation method, so that the reliability of the high-voltage direct-current power transmission system is evaluated. By adopting the embodiment of the invention, the accuracy of reliability evaluation of the high-voltage direct-current power transmission system can be improved based on the idea of the minimum cut set, and the risk level of the high-voltage direct-current power transmission system can be better reflected.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a reliability evaluation method, device, equipment and medium of a high-voltage direct current transmission system. Background technique [0002] The reliability evaluation of HVDC (High Voltage Direct Current) system is one of the important links in the power distribution process of HVDC system. The traditional reliability assessment results are given in the form of reliability indicators, which can reveal the long-term average reliability level of the HVDC transmission system and provide valuable system failure risk information for planners and operators. [0003] However, a reliability metric is essentially a random variable that depends on network topology, operating mode, system load, random failures, component repairs, and many other related factors, and is usually expressed mathematically as an expected value. The reliability index cannot accurately evaluate the r...

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Problems solved by technology

[0004] Embodiments of the present invention provide a method, device, equipment, and medium for reliability evaluation of HVDC transmission systems, to solve the problem of inaccurate reliability evaluation of HVDC transmission systems in the prior art, and to be able to evaluate reliability indicators of HVDC systems Fast and accurate estimation of the probability density distribution of HVDC transmission system can be achieved, thereby improving the accuracy of reliability assessment of HVDC transmission system

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