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Reliability evaluation method, system and device for direct-current power transmission system

A technology of DC transmission system and power transmission system, which is applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problems of low reliability evaluation calculation efficiency, etc., and achieve the effect of solving low calculation efficiency and improving calculation efficiency

Inactive Publication Date: 2020-04-10
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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Problems solved by technology

[0005] The present invention provides a reliability evaluation method, system and equipment of a direct current transmission system, which solves the technical problem of low efficiency in reliability evaluation and calculation of back-to-back asynchronous networking hybrid direct current transmission systems in the prior art

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  • Reliability evaluation method, system and device for direct-current power transmission system
  • Reliability evaluation method, system and device for direct-current power transmission system
  • Reliability evaluation method, system and device for direct-current power transmission system

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Embodiment Construction

[0051] Embodiments of the present invention provide a reliability assessment method, system and equipment for a direct current transmission system, which are used to solve the technical problem of low calculation efficiency in reliability assessment of back-to-back asynchronously networked hybrid direct current transmission systems in the prior art.

[0052] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present ...

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Abstract

The invention discloses a reliability evaluation method, system and device for a direct-current power transmission system, and the method comprises the following steps: carrying out the subsystem division of a back-to-back asynchronous networking hybrid direct-current power transmission system, and obtaining a plurality of subsystems; carrying out reliability evaluation on each subsystem by adopting a non-sequential Monte Carlo simulation method; and according to the reliability evaluation result of each subsystem, obtaining the reliability of the back-to-back asynchronous networking hybrid direct-current power transmission system based on the non-sequential Monte Carlo method. According to the invention, reliability parameters of elements of the back-to-back asynchronous networking hybriddirect-current power transmission system are obtained, the reliability index of the system can be calculated simply and accurately by dividing the subsystems of the back-to-back asynchronous networking hybrid direct-current power transmission system, performing reliability evaluation on the subsystems based on the Monte Carlo simulation method and then performing state sampling on the subsystems,and the calculation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of DC transmission reliability assessment, in particular to a reliability assessment method, system and equipment for a DC transmission system. Background technique [0002] The traditional back-to-back asynchronous grid DC transmission system is a DC transmission system with zero transmission line length. This type of DC transmission is mainly used for networking or power transmission between two asynchronously operating (different frequency or the same frequency but asynchronous) AC power systems, also known as asynchronous contact stations. The rectifier station equipment and inverter station equipment for back-to-back DC transmission are usually installed in one converter station, also known as back-to-back converter station. In the back-to-back converter station, the DC side of the rectifier and the inverter are connected through a smoothing reactor to form a closed-loop circuit on the DC side; while t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/36H02J3/38
CPCH02J3/00H02J3/36Y02E60/60
Inventor 李凌飞胡博黄莹谢开贵侯婷彭吕斌辛清明李昌林李江山郭龙
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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