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Power grid adaptability test device

A technology for adaptability testing and power supply devices, which is applied in the direction of fault location and fault detection according to conductor type, and can solve problems such as low power quality of power supply

Inactive Publication Date: 2017-09-12
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a power grid adaptability test device to solve the problem of low power quality of the existing test device power supply

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0040] see figure 2 , a structural schematic diagram of a grid adaptability testing device.

[0041] This embodiment provides a power grid adaptability test device, including: a disturbance power supply device 200, a disturbance line switch 100 and a bypass switch 300, characterized in that the disturbance power supply device 200 includes: a phase-shifting transformer 220, a four-quadrant converter Device 230 and main controller 210;

[0042] The main controller 210 is connected to the phase-shifting transformer 220 and the four-quadrant converter 230 respectively, and is used to generate control instructions and send them to the phase-shifting transformer 220 and the four-quadrant converter 230;

[0043] The phase-shifting transformer 220 is used to connect the input terminal of the disturbance grid;

[0044] The phase-shifting transformer 220 includes: a first voltage transformer 221, a first current transformer 222, a second voltage transformer 223 and a second current t...

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Abstract

The application discloses a power grid adaptability test device. The power grid adaptability test device comprises a turbulence power supply device, a turbulence circuit switch and a bypass switch, and is characterized in that the turbulence power supply device comprises a phase-shifting transformer, a four-quadrant converter and a main controller; the main controller is connected with the phase-shifting transformer and the four-quadrant converter respectively; the phase-shifting transformer comprises a first voltage transformer, a first current transformer and a second voltage transformer and a second current transformer which are connected with the main controller respectively; the four-quadrant converter is of a three-phase cascaded topological structure, and each phase consists of 30 cascaded power conversion units; each power conversion unit comprises a rectifying end, a main control end and an inverting end. By adopting the power grid adaptability test device provided by the application, the problem that power energy supplied to a conventional test device is low in quality can be solved effectively.

Description

technical field [0001] The present application relates to the technical field of grid testing, in particular to a grid adaptability testing device. Background technique [0002] The ideal power supply voltage waveform should be a pure sine wave with nominal amplitude and frequency. However, due to the lack of stability and robustness of the power supply grid itself, it is prone to frequency deviation, voltage deviation, voltage fluctuation and flicker, temporary Or disturbance problems such as transient overvoltage, waveform distortion, voltage sag and short-time interruption, resulting in failure or malfunction of electrical equipment. Nowadays, grid adaptability testing devices are usually used to test and improve the adaptability of electrical equipment to the grid. [0003] like figure 1 As shown, the existing grid adaptability test device generally includes: a disturbance device, a circuit breaker and a bypass switch. If the routine test is performed on the electrica...

Claims

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Application Information

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IPC IPC(8): G01R31/08
CPCG01R31/086
Inventor 李胜男吴水军何廷一陈勇彭俊臻
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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