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Comprehensive harmonic elimination device and harmonic elimination method thereof

A harmonic elimination and secondary harmonic elimination technology, which is applied in substation/distribution device housing, substation/switchgear cooling/ventilation, substation/switch layout details, etc., can solve the problem that the harmonic elimination device affects the working state, etc.

Pending Publication Date: 2019-09-03
SOUTHERN XINJIANG ELECTRICITY SUPPLY COMPANY OF STATE GRID XINJIANG ELECTRIC POWER +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a comprehensive harmonic elimination device and its method, and solve the problem that the working state of the harmonic elimination device is affected by dust accumulation during use

Method used

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  • Comprehensive harmonic elimination device and harmonic elimination method thereof
  • Comprehensive harmonic elimination device and harmonic elimination method thereof
  • Comprehensive harmonic elimination device and harmonic elimination method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: refer to Figure 1-2 , a comprehensive harmonic elimination device, including an intelligent harmonic elimination device 42 and a protective housing 1, and also includes a dust accumulation plate 3, a pressing device 7 and an unlocking device 8; the left and right sides of the protective housing 1 are provided with ventilation grids 14, The upper right side frame of the protective shell 1 is provided with a through groove 6 and a pressing device 7. The pressing device 7 is located directly below the through groove 6. The left side of the upper end of the protective shell 1 is fixedly connected with the left end of the electric telescopic rod 2. The protective shell 1 The upper end of the interior is provided with a dust accumulation plate 3, the left end of the dust accumulation plate 3 is fixedly connected with the right end of the electric telescopic rod 2, the bottom surface of the middle part of the dust accumulation plate 3 is fixedly connected with th...

Embodiment 2

[0035] Embodiment 2: refer to image 3 , combined with the basis of Embodiment 1, the pressing device 7 includes an adsorption cover 22, a pressing plate 23 is provided in the middle of the adsorption cover 22, a compression spring 25 is provided on the inner surface of the pressing plate 23, and a connecting rod 24 is fixedly connected to the middle of the inner surface of the pressing plate 23, The right end of the connecting rod 24 is located in the middle of the compression spring 25, and the left end of the connecting rod 24 is movably connected with the unlocking device 8.

[0036] The unlocking device 8 includes a fixed frame body 28, the inner left side of the fixed frame body 28 is fixedly connected with a fixed contact rod 29, the other end of the fixed contact rod 29 is fixedly connected with the left side of the stable frame 30, and the left end of the connecting rod 24 runs through the fixed frame body 28 And the stable frame 30 goes deep into the interior, the le...

Embodiment 6

[0043] A comprehensive harmonic elimination method belongs to the application of a comprehensive harmonic elimination device, and its operation method is:

[0044] S1. After the intelligent harmonic elimination device 42 is powered on, the display panel 13 shows that the clock is beating every second to indicate that the device is running. When the startup interface is displayed, press the OK key on the control panel 10 to enter the main menu;

[0045] S2. The main menu has four menu items including action record, monitoring data, time setting and station number setting. Click the corresponding option to enter the menu item setting; the internal Flash memory of the intelligent harmonic elimination device 42 can record the latest 20 fault records, including Type of failure and time of occurrence;

[0046] S3. On the main menu interface, press the corresponding key on the control panel 10 to enter "fault record", then press the option key to turn pages up and down, query records...

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PUM

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Abstract

The invention discloses a comprehensive harmonic elimination device and a harmonic elimination method thereof, and belongs to the technical field of harmonic elimination devices. The comprehensive harmonic elimination device consists of a microcomputer type secondary harmonic eliminator and a current type primary harmonic eliminator, wherein the advantages of the primary harmonic eliminator and the advantages of the secondary harmonic eliminator are mutually combined for complementary advantages; when a system resonates, the physical characteristics of the current type primary harmonic eliminator are utilized for fast harmonic elimination; the secondary harmonic eliminator uploads a resonance frequency amplitude value and the like and monitors the operation state of the primary harmonic eliminator in real time; and when the current type primary harmonic eliminator operates abnormally, the microcomputer type secondary harmonic eliminator sends an alarm signal and performs automatic putinto harmonic elimination, so that a voltage transformer is ensured not to participate in resonance.

Description

technical field [0001] The invention relates to the technical field of harmonic elimination devices, in particular to a comprehensive harmonic elimination device and a method for eliminating harmonics. Background technique [0002] In the power system, due to the matching of the nonlinear inductance of the voltage transformer and the capacitance of the line to the ground, the ferromagnetic resonance overvoltage is caused, which directly threatens the safe operation of the power system. In severe cases, it will cause the explosion of the voltage transformer and cause an accident. A commonly used solution is to install a microcomputer resonance eliminator (referred to as the second harmonic elimination) or a PT neutral point series primary resonance eliminator (referred to as the primary resonance elimination) on the open triangle of the voltage transformer to diagnose and eliminate the fault, and use it alone for a long time. It will cause damage to the voltage transformer. T...

Claims

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Application Information

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IPC IPC(8): H02J3/24H02B1/26H02B1/56H02B1/28
CPCH02J3/24H02B1/26H02B1/565H02B1/28
Inventor 李大立李世峰郑义朱国平李宝鹏吴建军麦尔旦江.阿不都瓦依提雷鸣赵普志吴伟丽于昌隆张田明刘俊奚涛糟伟红
Owner SOUTHERN XINJIANG ELECTRICITY SUPPLY COMPANY OF STATE GRID XINJIANG ELECTRIC POWER
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