Method and system for remotely assessing reliability of power quality on-line monitoring device

A monitoring device and power quality technology, applied in measurement devices, measuring electrical variables, instruments, etc., can solve the problem of reducing the reliability of power quality online monitoring devices, reducing the reliability of reliability analysis application results, and affecting the integrity of power quality data. and correctness and other issues, to achieve low-cost results

Active Publication Date: 2016-01-27
JIANGMEN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID +1
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Problems solved by technology

One of the most direct consequences of the reduced reliability of power quality on-line monitoring devices is to affect the integrity and correctness of power quality data, and insufficient quantity and low quality power quality data will lead to other advanced power quality applications such as power quality disturbance source location , regional power quality benchmark level evaluation, power grid reliability analysis, etc. cannot be carried out, or the reliability of application results is reduced

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  • Method and system for remotely assessing reliability of power quality on-line monitoring device

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Embodiment Construction

[0037] The most direct consequence of the reduced reliability of monitoring devices is the decline in data quality, which is mainly reflected in the data integrity rate and data accuracy rate. The data integrity rate and data accuracy rate can be calculated based on the historical data of power quality timing records stored in the database. .

[0038] The invention discloses a method for remotely evaluating the reliability of an online power quality monitoring device, which includes the following steps:

[0039] Query calculation steps: based on the historical data of power quality timing records stored in the database of the power quality online monitoring system, respectively calculate the data integrity rate K1 and data accuracy rate K2;

[0040] Calculation and processing steps: Calculate the reliability rate K of the monitoring device based on the data integrity rate K1 and the data accuracy rate K2, K=K1*λ1+K2*λ2, where λ1 and λ2 are weights, and λ1 and λ2 respectively r...

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Abstract

The invention provides a method and a system for remotely assessing reliability of a power quality on-line monitoring device. The method comprises: a querying and calculating step of respectively calculating data integrity rate K1 and data accuracy K2 based on regularly recorded historical data of power quality stored in a database of the power quality on-line monitoring device; a calculating and processing step of calculating the reliability K of the monitoring device based on the data integrity rate K1 and the data accuracy K2. The beneficial effects of the method and the system are: the invention provides a method for remotely assessing the reliability of a power quality monitoring device based on the operation monitoring for data quality of the power quality, the monitoring device and network and communication software thereof. The method can be automatically implemented by application software. Besides reliability assessment of a single power quality monitoring device, the method can be applied to comprehensive assessments such as regional comprehensive reliability and comprehensive reliability of specific types of monitoring devices. The method is a high-efficient and low-cost management method.

Description

technical field [0001] The invention relates to the technical field of power quality monitoring and management, in particular to a method and system for remotely evaluating the reliability of an online power quality monitoring device. Background technique [0002] The operation management of power quality monitoring devices is one of the tasks of power quality technical supervision. Equipment reliability management is one of the important contents of equipment operation management. The so-called decline in the reliability of power quality monitoring devices refers to, on the one hand, the failure of the device to operate normally due to hardware failure, and on the other hand, it also includes the decrease in measurement accuracy and the generation of invalid and abnormal data, although the device can still maintain normal operation. Field experience shows that after long-term operation of the power quality on-line monitoring device, it is inevitable that the components wil...

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01R35/00
Inventor陈子辉王昕刘宁麦伟辉胡中汤振鹏王硕君何兴华陈劲吴智影刘勇浩麦荣焕林伟雄万志强麦锦财廖雯耿介雯杨昊睿黄俊
OwnerJIANGMEN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID