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Voltage transformer error online analysis method and device, equipment and a storage medium

A technology of voltage transformers and transformers, which is applied in the direction of measuring devices, instruments, and measuring electrical variables, etc., can solve inconvenience and other problems, achieve the effects of facilitating on-site inspection, improving the level of intelligent management, and shortening the time for troubleshooting

Active Publication Date: 2021-08-24
ACCUPOWER ELECTRONIC TECH CO LTD OF TAIYUAN
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  • Claims
  • Application Information

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Problems solved by technology

When conducting on-site inspections of PT errors and CT errors, the PT and CT errors must be inspected by the PT error and CT error inspection equipment after a power failure, which is very inconvenient

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  • Voltage transformer error online analysis method and device, equipment and a storage medium
  • Voltage transformer error online analysis method and device, equipment and a storage medium

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Embodiment Construction

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0043] It should be understood that the terms "first", "second", ... "Nth" and the like in the claims, specification and drawings of the present application are used to distinguish different objects, rather than to describe a specific order. The terms "comprising" and "comprises" used in the specification and claims of this application indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or more other featu...

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Abstract

The invention provides a voltage transformer error online analysis method and device, equipment and a storage medium. The method comprises the following steps: determining a first reference voltage transformer with the same voltage grade as a to-be-measured voltage transformer, wherein the first reference voltage transformer and the to-be-measured voltage transformer are in the same transformer substation or adjacent transformer substations; sampling a first to-be-measured voltage sequence of the secondary side of the to-be-measured voltage transformer and a first voltage sequence of the secondary side of the first reference voltage transformer at the same time at intervals of preset time, wherein the number of terms of the first to-be-measured voltage sequence and the number of terms of the first voltage sequence are n, and n is a natural number larger than 2; determining the first to-be-measured voltage sequence and a first error value of the first voltage sequence; and in response to the fact that the first error value is smaller than a preset threshold value, determining that the to-be-measured voltage transformer works normally.

Description

technical field [0001] The present application relates to the technical field of electric energy measurement, in particular to an online analysis method, device, equipment and storage medium for errors of voltage transformers. Background technique [0002] In the electric power industry, the accuracy of electric energy measurement is an important indicator of electric energy operation. Energy metering devices usually consist of potential transformers (PTs), current transformers (CTs) and energy meters. Therefore, at present, when performing on-site error inspection on electric energy metering devices, it is usually necessary to inspect PT error, CT error and electric energy meter error respectively. [0003] Among them, when the on-site inspection of the error of the electric energy meter is carried out, the error of the electric energy meter can be checked online without power failure through the on-site inspection instrument for the error of the electric energy meter, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 陈江
Owner ACCUPOWER ELECTRONIC TECH CO LTD OF TAIYUAN
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