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Field calibration system of current transformer for metering

A current transformer and transformer calibration technology, applied in the field of current transformer calibration system, can solve the problems of low degree of automation, long test loop, many equipment, etc., and achieve the effect of strong anti-interference ability and wide application range

Inactive Publication Date: 2012-03-14
SUZHOU HUADIAN ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this method requires more equipment, and the test loop is long, and the longer the test loop, the larger the volume of the test equipment and the larger the apparent capacity; at the same time, there are problems such as low degree of automation, cumbersome operation, and difficult adjustment of reactive power compensation.

Method used

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  • Field calibration system of current transformer for metering
  • Field calibration system of current transformer for metering

Examples

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Embodiment Construction

[0015] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] See figure 1 Shown, a kind of on-the-spot calibration system of measuring current transformer, comprises a tested current transformer 6, a standard current transformer module 5 electrically connected with described tested current transformer 6, and a The transformer calibration module 7 connected to the tested current transformer 6 and the standard current transformer module 5 at the same time also includes a control and detection display module 8, and the control and detection display module 8 is connected to the transformer calibration module 7 interconnected.

[0017] Further, the control and detection display module 8 is also electrically connected to a power input module 1, a controllable large-capacity voltage regulation module 2, a large-capacity boosting module 3 and a program-controlled capacitor switching module 4, the power input Mo...

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PUM

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Abstract

The invention discloses a field calibration system of a current transformer for metering. The field calibration system comprises a tested current transformer, a standard current transformer module electrically connected with the tested current transformer, and a transformer calibration module simultaneously connected with the tested current transformer and the standard current transformer module, and further comprises a control and detection display module which is mutually connected with the transformer calibration module. The system provided by the invention is the field calibration system which is simple and meets the measurement precision requirement, can effectively guarantee the feasibility of the field calibration of all 750 kV and 1000 kV engineering current transformers and leads the testing efficiency to be improved.

Description

technical field [0001] The invention relates to a calibration system of a current transformer, in particular to an on-site calibration system of a current transformer for metering. Background technique [0002] With the rapid development of domestic 1000kV power grid construction, on-site calibration of 1000kV gateway metering transformers is an important measure to ensure the accuracy and reliability of electricity metering. Before the current transformer for 750kV gate metering is put into operation, on-site error verification must be carried out in strict accordance with the verification regulations. Gas-insulated enclosed combined electrical appliances (GIS) have the advantages of high operational reliability, small footprint, convenient maintenance, and good safety. Way. [0003] The power exchange capacity of the 1000kV line is large, and the current ratio of the current transformer in the GIS main circuit reaches 5000A / 1A and 6500A / 1A. At present, the accuracy verif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02
Inventor 唐湘城黄永康王翠翠姜杏辉
Owner SUZHOU HUADIAN ELECTRIC CO LTD
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