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Method and system for optimizing temperature rise of connector terminals of ultrahigh-voltage direct-current converter stations

A technology of UHV DC and optimization methods, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve problems such as huge amount of economic loss, high degree of harm, and shortened service life of equipment

Active Publication Date: 2017-09-01
CHINA ELECTRIC POWER RES INST +2
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  • Abstract
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Problems solved by technology

[0002] With the development of the national economy, the scale of the UHV DC converter station project is rapidly expanding, and the overheating defects of the flow circuit connector terminals in the station will cause fatigue damage to the structure and materials of the converter station equipment, shorten the service life of the equipment, and affect the Safe and stable operation of power grid
The heating phenomenon of the connection terminals of the flow circuit of the UHV DC converter station found so far covers almost all the UHV DC converter stations currently in operation. The scope of the impact is large and the degree of harm caused is high. The economic loss is generally huge and difficult to estimate accurately

Method used

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  • Method and system for optimizing temperature rise of connector terminals of ultrahigh-voltage direct-current converter stations
  • Method and system for optimizing temperature rise of connector terminals of ultrahigh-voltage direct-current converter stations
  • Method and system for optimizing temperature rise of connector terminals of ultrahigh-voltage direct-current converter stations

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Embodiment Construction

[0042] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0043] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention provides a method for optimizing temperature rise of connector terminals of ultrahigh-voltage direct-current converter stations, and aims at enabling design parameter-optimized connector terminals to avoid or lighten the loss caused by power grid disaster accidents due to connector terminal heating, and avoiding the economic waste caused by oversized connector terminals. The method comprises the following steps of selecting a design parameter to obtain a maximum temperature rise Tmax of a lapping part of a corresponding terminal block; when the Tmax is smaller than or equal to Tu, obtaining a function relationship between the maximum temperature rise and the design parameter; combining a connector terminal block limit state equation to obtain a value of connector terminal reliability R through a Monte Carlo method; selecting an initial design point and combining different parameters in the vicinity of the initial design point; calculating a maximum temperature rise value of the corresponding lapping part to obtain the reliability, and obtaining a function relationship between the design parameter and the reliability; setting a target function by taking a connector terminal cost as an optimization condition; and obtaining an optimal design parameter of the connector terminal by taking the reliability as a constraint condition.

Description

technical field [0001] The invention belongs to the technical field of disaster prevention for power grids of UHVDC converter stations, and more specifically relates to a method and system for optimizing the temperature rise of joint terminals of UHVDC converter stations. Background technique [0002] With the development of the national economy, the scale of the UHV DC converter station project is rapidly expanding, and the overheating defect of the connection terminal of the flow circuit in the station will cause fatigue damage to the structure and materials of the converter station equipment, shorten the service life of the equipment, and affect the Safe and stable operation of the power grid. The heating phenomenon of the connection terminals of the flow circuit of the UHV DC converter station found so far covers almost all the UHV DC converter stations currently in operation, which affects a wide range and causes a high degree of harm. Economic losses are generally hug...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/23G06F2119/08Y02E60/00
Inventor 朱宽军宋胜利张雪松司佳钧李冬青杜晓磊肖鲲孙娜牛海军李军辉刘操兰
Owner CHINA ELECTRIC POWER RES INST
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