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Method and device for online evaluation of converter valve state based on grey clustering

A technology of grey clustering and state evaluation, applied in the field of power operation and maintenance, can solve the problems of poor ability to predict potential risks and incomplete evaluation factors, and achieve the effect of improving accuracy and good data foundation.

Inactive Publication Date: 2019-02-26
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Embodiments of the present invention provide a method and device for online evaluation of converter valve status based on gray clustering, to overcome the incomplete and one-sided evaluation factors of the converter valve evaluation method in the prior art, and the need for manual operation. Poor potential risk capability, difficult to provide good data support for planned maintenance of converter valves, etc.

Method used

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  • Method and device for online evaluation of converter valve state based on grey clustering
  • Method and device for online evaluation of converter valve state based on grey clustering
  • Method and device for online evaluation of converter valve state based on grey clustering

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Embodiment 1

[0034] The embodiment of the present invention provides an online evaluation method of converter valve status based on gray clustering, such as figure 1 As shown, the online evaluation method of converter valve status based on gray clustering includes:

[0035]Step S1: Obtain online monitoring data of the converter valve within a preset time period. Specifically, the online monitoring data includes the operating data of key parameters of the valve tower body, the operating data of the valve control system, the operating data of the water cooling system, the temperature data of the valve hall, the humidity data of the valve hall, etc.

[0036] Step S2: Establish a state evaluation index matrix of the converter valve according to the online monitoring data, and calculate the score values ​​of each evaluation parameter category in the state evaluation index matrix according to the online monitoring data. Specifically, in practical applications, the scoring value of each evaluati...

Embodiment 2

[0078] This embodiment provides an online evaluation device for converter valve status based on gray clustering, such as Figure 5 As shown, the online evaluation device for converter valve status based on gray clustering includes:

[0079] The online monitoring data acquisition module 1 is used to acquire the online monitoring data of the converter valve within a preset time period. For details, refer to the relevant description of step S1 in Embodiment 1.

[0080] The scoring value calculation module 2 is used to establish a state evaluation index matrix of the converter valve according to the online monitoring data, and calculate the scoring values ​​of each evaluation parameter category in the state evaluation index matrix according to the online monitoring data. For details, refer to the relevant description of step S2 in Embodiment 1.

[0081] The whitening weight function construction module 3 is configured to respectively construct a whitening weight function corresp...

Embodiment 3

[0086] An embodiment of the present invention provides a non-transitory computer storage medium, the computer storage medium stores computer-executable instructions, and the computer-executable instructions can perform the online assessment of the converter valve status based on gray clustering in any of the above-mentioned Embodiment 1 method, wherein the storage medium can be a magnetic disk, an optical disk, a read-only memory (Read-OnlyMemory, ROM), a random access memory (Random Access Memory, RAM), a flash memory (FlashMemory), a hard disk (Hard Disk Drive, abbreviation: HDD) or a solid-state drive (Solid-State Drive, SSD), etc.; the storage medium may also include a combination of the above types of memories.

[0087] Those skilled in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium...

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Abstract

The invention provides a method and a device for online evaluation of a converter valve state based on grey clustering. The method comprises: acquiring online monitoring data of a converter valve in apreset time period; establishing a state evaluation indicator matrix of the converter valve according to online monitoring data, and calculating a score value of each evaluation parameter class in the state evaluation indicator matrix according to the online monitoring data; respectively constructing a whitening weight function corresponding to each preset gray class according to at least three preset grey classes; according to a preset weight value of each evaluation parameter class and the whitening weight function of the score value of each evaluation parameter class, using a grey clustering algorithm to respectively calculate a clustering weight value of each preset grey class; and evaluating an operating state of the converter valve according to the each clustering weight value. By implementing the method, real-time evaluation of the operating state of the converter valve is realized without manual operation, accuracy of an evaluation result is improved, and potential risk prediction of the converter valve is realized, and provides good data basis for planned maintenance of the converter valve.

Description

technical field [0001] The invention relates to the technical field of electric power operation and maintenance, in particular to an online evaluation method and device for a converter valve state based on gray clustering. Background technique [0002] The LCC-HVDC direct current project is currently in a high-speed construction period. Due to the limited development of converter valve online monitoring technology in the past, the current online status evaluation of converter valves is still in the traditional manual monitoring and evaluation stage. At present, the converter valve monitoring and evaluation methods for LCC-HVDC direct current projects mainly include: through the peripheral observation by the operation and maintenance personnel of the converter station, evaluate the online operation of the converter valve; or through the peripheral remote monitoring equipment such as the infrared tester in the valve hall , to monitor the relevant parameters of the specific equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G06F17/16G06K9/62G06Q10/00G06Q10/06G06Q50/06
CPCG06F17/16G06Q10/0635G06Q10/06393G06Q10/20G06Q50/06G01R31/00G06F18/23
Inventor 张海峰吴文祥杨建伟宋林伟刘盼盼王雅洁张迪杨树森
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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