Field load testing device for power transformer

A power transformer and load test technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of difficult to meet the test power supply capacity, lack of power transformer windings, high test accuracy requirements, etc., to achieve high cost performance and convenient installation and transformation , the effect of reducing requirements

Inactive Publication Date: 2015-05-20
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +2
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the field test, due to the large short-circuit capacity of the tested transformer, the capacity of the required test power supply is often difficult to meet the requirements, and the matching test devices such as induction voltage regulators, intermediate transformers, etc. are not suitable for field tests.
Due to the limitations of...

Method used

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  • Field load testing device for power transformer
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Embodiment Construction

[0021] Such as figure 1 As shown, the present invention includes a high-voltage switchgear 1, an induction voltage regulator 2, an intermediate transformer 3, two sets of oil-immersed compensating capacitor banks 4, a transformer precision measurement unit 5 and a complete set of equipment for testing the tested product 6. The tested product 6 is the tested transformer. The induction voltage regulator 2, the intermediate transformer 3, and the compensation capacitor bank 4 are connected to the precision measurement transformer cabinet with special cables, and the precision measurement unit 5 of the transformer is located in the precision measurement transformer cabinet, including the primary power cable and the secondary control cable, of which Each of the secondary control cables adopts aviation plugs with different cores to prevent misplugging.

[0022] The device of the present invention is specially used for the on-site load loss measurement test of transformers with a vo...

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PUM

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Abstract

The invention discloses a field load testing device for a power transformer. The field load testing device for the power transformer is used for testing the tested transformer and comprises a power supply, a high-voltage switch cabinet, an induction voltage regulator, an intermediate transformer, a compensating capacitor bank, a mutual inductor precision measurement unit and complete testing control system equipment, wherein one side of the high-voltage switch cabinet is connected with the power supply, and the other side of the high-voltage switch cabinet is connected with the induction voltage regulator; the induction voltage regulator, the intermediate transformer, the compensating capacitor bank and the mutual inductor precision measurement unit are sequentially connected through a line. The field load testing device for the power transformer has the functions of computing and controlling an input voltage assembly and a capacity assembly of the compensating capacitor bank, and the requirement on the capacity of a field test power supply is remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of high-voltage electrical equipment testing, in particular to a field application device for power transformer load testing. Background technique [0002] In recent years, with the rapid development of the power system, users have higher and higher requirements for the economical and reliable operation of high-voltage electrical equipment, especially power transformers. The load loss of the transformer is a key technical indicator, which is of great significance to the economic operation of the transformer and the service life of the transformer itself; and the short-circuit impedance determines the impact of the transformer on the grid voltage fluctuation and the occurrence of transformer failures during the operation of the power system. The size of the electromotive force in the case of an outlet short-circuit accident, and the short-circuit impedance is also a necessary condition for determining whether...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01R27/02
Inventor 郑含博韩金华王伟王立楠李予全李晓纲
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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