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Current transformer operation evaluation method

A technology of current transformer and evaluation method, which is applied in the field of electric power, and can solve the problems of untimely fault discovery, high manpower and material resources consumption, and heavy workload.

Active Publication Date: 2015-09-16
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, power companies mainly judge the operating status of current transformers in the field through periodic verification, but periodic verification has a large workload, consumes a lot of manpower and material resources, does not find faults in time, and has insufficient basis for power recovery after faults, etc. A series of disadvantages, therefore, it is urgently needed to establish an evaluation method for the operating state of current transformers

Method used

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Experimental program
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Embodiment

[0041] Such as figure 1 As shown, an evaluation method for the operation of a current transformer includes the following steps:

[0042] 1) Collect the original data of the on-site current transformer through the online monitoring system of the remote metering device, and upload the original data to the data server of the upper PC;

[0043] 2) The host PC classifies the original data, and establishes a mathematical model for the operation evaluation of the current transformer according to the classified original data, which specifically includes the following steps:

[0044] 21) Obtain the initial health index HI of the current transformer operation 1 , initial health index HI of current transformer 1 The calculation of is carried out as follows:

[0045] (1) Routine settings

[0046]Set some node values ​​of the health index, including the initial health index of the new device, the theoretical aging health index, the end-of-life health index, the lower limit of the healt...

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Abstract

The invention relates to a current transformer operation evaluation method, which comprises the following steps: 1) original data of a field current transformer acquired by a system are monitored in an online mode via a remote metering device, and the original data are uploaded to a data server of an upper PC; 2) the upper PC classifies the original data, and according to the original data after classification, a mathematical model for current transformer operation evaluation is built; and 3) according to the built mathematical model for current transformer operation evaluation, current transformer operation is evaluated, a final health index HI of the current transformer is acquired, and according to the final health index HI, an operation trend of the current transformer is predicted and early warning is carried out. Compared with the prior art, the current transformer operation evaluation method has the advantages of being scientific and reasonable, a large specific number of research objects, wide covering range, systemaltization, intelligence and the like.

Description

technical field [0001] The invention relates to the field of electric power, in particular to an evaluation method for the operation of a current transformer. Background technique [0002] Gateway metering is an important part of the large marketing system among the three sets of five major systems. The operation of the gateway metering device not only reflects the management level, but also affects the economic benefits of both the electricity seller and the buyer. In order to manage devices fairly, justly, openly, and with credibility, and maintain the seriousness of measurement, it is necessary to refine and classify the operating conditions to provide a scientific basis for technical countermeasures. [0003] This time, the project "Research on the Operation Evaluation System and Remote Status Monitoring Scheme of Gateway Electric Energy Metering Devices" undertaken by the Electric Power Research Institute of Shanghai Electric Power Company in conjunction with Xiamen Hon...

Claims

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Application Information

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IPC IPC(8): G01R35/02
Inventor 夏东辉杜卫华陈海宾王卉陈圣泽孙闻
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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