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Energy feeding type electrical energy mass perturbance generating device

A power quality disturbance generation device technology, applied in the direction of measuring devices, measuring electrical variables, output power conversion devices, etc., can solve the problems of high cost, long test cycle, and difficulty in unifying test environment standards, so as to save electric energy and reduce required effect

Inactive Publication Date: 2008-08-27
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the test cycle is long, the cost is high, and the test environment standard is difficult to unify

Method used

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  • Energy feeding type electrical energy mass perturbance generating device
  • Energy feeding type electrical energy mass perturbance generating device
  • Energy feeding type electrical energy mass perturbance generating device

Examples

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Embodiment Construction

[0018] Accompanying drawing is embodiment of the present invention, content of the present invention will be further described below in conjunction with accompanying drawing:

[0019] The device includes a harmonic source 1, a feedback link 2, an intermediate DC capacitor 3, a control terminal 4, a first LCL filter link 5, and a second LCL filter link 6; the control terminal 4 is realized by a DSP controller, and according to user settings The control signal is generated regularly to control the current disturbance of the harmonic source part; the harmonic source 1 and the feedback link 2 are cascaded in 3 phases through the intermediate DC capacitor to form an AC-DC-AC topology to achieve energy feedback; the AC of the harmonic source 1 The AC side of the feedback link 2 is connected to the grid through the first LCL filter link 5 , and the AC side of the feedback link 2 is connected to the grid through the second LCL filter link 6 .

[0020] 1. Harmonic source

[0021] As s...

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Abstract

The present invention discloses an energy-feedback type power quality disturbance generating device, which relates to a power quality disturbance generating device. The device comprises a harmonic source (1), a feedback link (2), a middle direct current capacitor (3), a control terminal (4), a first LCL filtering link (5), and a second LCL filtering link (6). The control terminal (4) adopts a DSP controller to realize that a control signal which is generated according to the setting of a user controls the harmonic source to partially generate current disturbance. The harmonic source and the feedback link are cascaded via the middle direct current capacitor to form an AC-DC-AC topological structure so as to realize power feedback. The alternating current side of the harmonic source is connected with a power network via the first LCL filtering link. The alternating current side of the feedback link is connected with the power network via the second LCL filtering link. The device is capable of simulating harmonic current, active current, inductance reactive current or capacitive reactive current of a plurality of combination frequencies, and the device is capable of simulating various working conditions of a plurality of nonlinear loads such as electric arc furnaces, medium frequency furnaces, welding machines and frequency converters, etc.

Description

technical field [0001] The invention relates to a power quality disturbance generating device and an inverter energy feeding technology, and belongs to the field of harmonic detection and control equipment performance testing of electric power systems. Background technique [0002] The continuous increase of non-linear loads such as various power electronic equipment, electric arc furnaces and electric traction locomotives in the power system makes the power quality worsen day by day. With the continuous research on power quality issues and the development of power electronics technology, power quality testing instruments and various power quality compensation devices have been developed rapidly. How to test the performance of these devices conveniently and quickly before they are officially put into operation is extremely important. important. [0003] At present, some laboratories specializing in the study of power quality, such as the power quality laboratory of Wichita ...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01R31/42H02M5/458
Inventor 王宝安汪楠楠黄学良
Owner SOUTHEAST UNIV
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