On-line detection system for field error of capacitor type voltage transformer

A voltage transformer and capacitive technology, which is applied in the field of on-line detection of capacitive voltage transformer field errors, can solve problems such as on-line detection of capacitive voltage transformer errors, and achieve the effects of higher cost, simpler operation and lower cost.

Inactive Publication Date: 2018-05-11
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The technical solution of the present invention provides a system and method for on-line detection of field errors of capac

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  • On-line detection system for field error of capacitor type voltage transformer
  • On-line detection system for field error of capacitor type voltage transformer
  • On-line detection system for field error of capacitor type voltage transformer

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Embodiment Construction

[0032] 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.

[0033] 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 discloses an on-line detection system for a field error of a capacitor type voltage transformer. The system is composed of a voltage transformer group, a secondary signal conversion unit, and an error online detection unit. The voltage transformer group consists of a plurality of to-be-tested capacitor type voltage transformers for measuring and outputting voltage signals. The secondary signal conversion unit connected to output terminals of secondary windings of the voltage transformers in the voltage transformer group and the error online detection unit is used for receiving output voltage signals of the plurality of voltage transformers, converting the output voltage signals into sampling data of the plurality of voltage transformers, and sending the sampling data to the error online detection unit. The error online detection unit is used for receiving the sampling data of the plurality of to-be-tested voltage transformers, analyzing the sampling data of the pluralityof to-be-tested voltage transformers, and acquiring errors of the sampling data of the plurality of to-be-tested capacitor type voltage transformers.

Description

technical field [0001] The invention relates to the technical field of electric power measurement, and more specifically, relates to a system and method for on-line detection of field errors of capacitive voltage transformers. Background technique [0002] The installation position, wiring method, secondary load and electromagnetic field distribution around the work of the capacitive voltage transformer will all affect its error characteristics, which in turn will affect the accuracy of the device itself. Therefore, JJG 1021 "Power Transformer Verification Regulations" stipulates that the verification period of the capacitor voltage transformer shall not exceed 4 years. There are a large number of 110kV and above voltage level capacitive transformers in the operation of my country's power system, and the workload of testing their error performance during power outages is huge. Moreover, ultra-high voltage and ultra-high voltage projects are different from ordinary low-voltag...

Claims

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Application Information

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IPC IPC(8): G01R35/02G01R31/00
CPCG01R31/00G01R35/02
Inventor 王玲吴士普汪本进冯宇毛安澜徐思恩邱进陈晓明李璿余春雨朱丝丝邵苠峰
Owner CHINA ELECTRIC POWER RES INST
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