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An electronic power transformer power quality detection system

An electronic power and power quality technology, applied in the measurement of electrical variables, instruments, and electrical measurement, can solve the problems of voltage waveform distortion, short-term power supply after voltage drop, power grid voltage fluctuation and flicker, etc., to achieve excellent insulation performance, solution The effect of grid voltage fluctuation and flicker

Active Publication Date: 2019-02-15
ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an electronic power transformer power quality detection system to solve the grid voltage fluctuation and flicker, voltage waveform distortion, input three-phase voltage imbalance, Problems such as voltage dips and short-term power interruptions and frequency deviations

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  • An electronic power transformer power quality detection system

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0023] figure 1 A schematic diagram of the electronic power transformer power quality detection system of the present invention is shown, which includes an electronic power load PEL1, an electronic power transformer PET2, a current transformer 3, a voltage transformer 4, a public power grid 5, a power quality analyzer 6, and a background control system 7. The first switch QF8, the second switch 9, the first AC bus 10, and the second AC bus 11.

[0024] The electronic power load PEL1 is connected to the first AC bus 10 through the first switch 8 .

[0025] The first AC bus 10 is connected to the output end of the electronic power transformer PET2; the input end of the electronic power transformer PET2 is connected to the second switch 9.

[0026] The second switch 9 is conne...

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Abstract

The invention discloses an electric power quality detection system of a power electronic transformer and relates to electric power quality detection of a power grid. The electric power quality detection system comprises the power electronic transformer (PET), a power electronic load (PEL) and a background control system. With the adoption of the detection system disclosed by the invention, output characteristics of the power electronic transformers with different technical optimized schemes and different control strategies can be detected, and particularly output electric power quality parameters can be detected; and the problem of output electric power quality detection of the power electronic transformer can be effectively solved and the product yield of the power electronic transformer is improved.

Description

technical field [0001] The invention relates to a power quality detection system, in particular to a power quality detection system for an electronic power transformer. Background technique [0002] In recent years, with the development of high-power electronic components and their control technology, a new type of transformer-electronic power transformer PET (Power Electronic Transformer), which realizes voltage conversion and energy transfer in power systems through electronic power conversion technology, is increasingly used Applied to power systems, compared with traditional power transformers, electronic power transformers have the advantages of small size, light weight, small no-load loss, and no need for insulating oil. At the same time, it can also play the role of power quality controller, and it is a new type of transformer with multiple functions. [0003] After an electronic power transformer is produced, in addition to the routine test, the current test of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
CPCG01R31/003
Inventor 刘君曾鹏曾华荣马晓红陈仕军张迅刘宇陈沛龙田承越
Owner ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD