Testing device for high-voltage three-phase combination transformer

A technology of combining transformers and testing devices, which is applied in the direction of measuring devices, instruments, and measuring electrical variables, to achieve the effect of saving manpower and material resources and improving work efficiency

Active Publication Date: 2010-01-13
ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It does not require multiple wiring tests in the current single-phase method, can save a lot of manpower and material resources, and improve work efficiency

Method used

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  • Testing device for high-voltage three-phase combination transformer
  • Testing device for high-voltage three-phase combination transformer
  • Testing device for high-voltage three-phase combination transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The technical scheme of a high-voltage three-phase combined transformer testing device in this embodiment is shown in the appendix figure 1 , including the 10kV three-phase voltage transformer calibration test circuit that can independently carry out the test work and the 5A~600A / 5A three-phase current transformer calibration test circuit that can independently carry out the test work, the three-phase voltage transformer calibration test circuit and The three-phase current transformer calibration test circuit can also carry out calibration tests for 10kV combined transformers at the same time. The two independent systems each use a set of three-phase input and three-phase output 10kVA UPS power supply standard machines to ensure the three-phase symmetrical balance of the power supply without interference, and each uses a general-purpose intelligent transformer calibrator to replace the single-phase transformer calibration instrument. The specific invention is constitu...

Embodiment 2

[0030] In this embodiment, the technical scheme of a high-voltage three-phase combined transformer testing device in this embodiment is shown in the appendix figure 1 , wherein the 10kV three-phase voltage transformer verification test line that can independently carry out the test work in the first embodiment can also test a separate three-phase voltage transformer according to the above method.

Embodiment 3

[0032] A high-voltage three-phase combined transformer testing device in this embodiment is characterized in that: when this high-voltage three-phase combined transformer testing device performs error measurement according to the GB17201-2007 "Combined Transformer" type test, in addition to simultaneously applying The specified three-phase current and three-phase voltage, directly verify the three-phase combined transformer composed of V-connection or Y-connection voltage transformer and three-phase (or two-phase) current transformer, and can also be equipped with a corresponding millivolt meter Or the oscilloscope measures the secondary induced voltage of the voltage transformer respectively, which can measure and calculate the error influence of the current transformer on the voltage transformer and connect the resistance R=4Ω recommended by the national standard in each phase current transformer of the three-phase combined transformer (8) , the influence of the three-phase v...

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Abstract

The invention discloses a testing device for a high-voltage three-phase combination transformer, in order to solve the problems of low working efficiency caused by multiple times of wiring experiments and errors caused by not considering the interferences between phases in the existing single-phase calibration method, and stimulates the condition of actual work to test the error change when the combination transformer works. The testing device comprises a computer control and information management system (1), a zero position and over-load protection module (2) of a voltage circuit, a single-phase voltage transformer calibrator (3), a three-phase voltage load box (4), an electrical three-phase voltage regulator (5) used by a voltage transformer, a three-phase voltage transformer conversion and control module (6), an integrated three-phase self-contained booster standard voltage transformer (7) and the voltage part of a three-phase combination transformer (8) under test; a three-phase power supply is connected into the electrical three-phase voltage regulator (5) used by the voltage transformer through the zero position and over-load protection module (2) of the voltage circuit; and the electrical three-phase voltage regulator (5) used by the voltage transformer is wired with the booster part of the integrated three-phase self-contained standard voltage transformer (7) by adopting YN and yn. The testing device can solely form a system, and on-site test is fast and efficient.

Description

technical field [0001] The invention relates to a test device for electric energy measurement and detection of three-phase combined inductors (electric energy metering box) or three-phase voltage transformers, in particular to a test device which adopts a standard voltage of three fully insulated single-phase self-contained boosters. The transformer combination is an integrated three-phase voltage transformer as a three-phase voltage transformer detection system for voltage standards and three high-voltage current transformers with current boosters as current standards for three-phase (or two-phase) current transformers The detection system is a high-voltage three-phase combined transformer testing device composed of two independent electrical measurement systems, which can simulate the actual industrial and mining error performance and mutual influence detection of the on-site three-phase combined transformer. Background technique [0002] The National Development and Refor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02
Inventor 马斌蔚晓明赵园沈效宏夏建军赵毅舟马博渊
Owner ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER
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