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A Harmonic Generator

A technology for generating devices and harmonics, applied in the field of harmonic generating devices, can solve problems such as the inability to meet the requirements of experimental research, and achieve the effects of simplifying device design and maintenance, easy to implement, and improving output capacity

Active Publication Date: 2021-05-18
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its output can only be a harmonic voltage source or a harmonic current source, and the linkage between voltage and current needs to be realized through a real load
Unable to meet the test and research requirements of applying high voltage and high current to the equipment at the same time

Method used

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Embodiment Construction

[0034] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] In order to thoroughly understand the embodiments of the present invention, the detailed structure will be set forth in the following description. Obviously, the practice of the embodiments of the invention is not limited to specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments besides these detailed descriptions.

[0036] The present invention provides a harmonic generating device, which is used to study the influence of harmonics on cables and transformer bushings. The cables include cable cores 6 and insulating sheaths 7; transformer bushings include conductive rods and insulating jackets outside the conductive rods; cables and Transformer bushings have two common features. F...

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Abstract

The present invention provides a harmonic generating device, the device includes a voltage generating part and a current generating part, the voltage generating part and the current generating part are connected through a controller, and the controller controls the voltage generating part and the The current generating part synchronously outputs AC voltage and AC current to the device under test, and causes the AC voltage and the AC current to produce a linkage effect of U=I*R, wherein U is the AC voltage output by the voltage generating part, and I is The current produces the alternating current of the partial output, and R is the resistance of the device under test. The harmonic generation device provided by the invention has a simple structure, is easy to maintain, can generate high voltage and high current harmonics at the same time, and meets the requirements of high power tests.

Description

technical field [0001] The invention relates to a harmonic generating device, in particular to a harmonic generating device capable of simultaneously generating high voltage and large current. Background technique [0002] Power cables are widely used in urban power grids. In recent years, with the implementation of urban economic construction and power grid upgrading and transformation, the proportion of power cables in urban power grids has become larger and larger, and the structure of power cable networks has become increasingly complex. The constant growth makes cables age more and more incidents of failure occur. The influence of harmonics on cables is mainly in three aspects, one is the skin effect, the other is the influence of zero-sequence harmonics on the neutral wire current of power cables, and the third is the high-frequency capacitive effect of cables. Cable terminations are the most vulnerable components in a cable system, and their failures account for the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/458G01R1/28
CPCG01R1/28H02M5/4585H02M1/0067
Inventor 康文斌梅刚蒙绍兴李澍森
Owner CHINA ELECTRIC POWER RES INST
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