Frequency change power for high-voltage testing

A high-voltage test and variable frequency power supply technology, which is applied to electrical components, conversion equipment for intermediate conversion to DC, conversion of AC power input to DC power output, etc., can solve problems such as difficult field wiring, partial discharge test, and large interference , to achieve the effect of reducing demand, simple and convenient operation, and ensuring safety

Active Publication Date: 2008-07-23
SIEYUAN ELECTRIC CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Drawing on this kind of existing technology can reduce the manufacturing requirements of the excitation transformer and improve the efficiency, but the partial discharge test cannot be carried out on site, the interference affecting the partial discharge measurement is large, a special filter device is required, and the field wiring is difficult

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Frequency change power for high-voltage testing
  • Frequency change power for high-voltage testing
  • Frequency change power for high-voltage testing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Such as figure 1 As shown, the present invention includes: computer control circuit 1, thyristor trigger control and rectification circuit 2, bridge output circuit 3, output sampling and measurement circuit 4, short circuit box 5, system voltage input and measurement circuit 6, partial discharge Synchronization and blanking signal generating circuit 7 . The three-phase AC input is sent to the thyristor trigger control and rectification circuit 2, the control signal of the thyristor trigger control and rectification circuit 2 is generated by the computer control circuit 1, and its rectification output is sent to the bridge output circuit 3, the bridge output circuit The output signal of 3 is sent to the short-circuit box 5 and sent to the output sampling and measuring circuit 4, and the output sampling and measuring circuit 4 uses the output signal of the bridge output circuit 3 as a sampled signal and outputs the measuring signal after passing through the output samplin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

This invention relates to a low disturbance conversion supply, in which, a three-phase AC input is sent to a trigger control and rectified circuit of a thyristor, the control signal of which is generated by a computer control circuit, its rectified output is sent to a bridge output circuit, the output signal of which is sent to a short circuit box and sent to an output sampling and testing circuit, which sends the sampled signal for testing then sends the tested signal to a computer control circuit, At the same time, the system voltage is also sent to a computer control circuit via the system voltage input and measurement circuit, which generates an input control signal needed by a synchronous and blanking signal generation circuit.

Description

technical field [0001] The invention relates to a power supply in the field of electric power system, in particular to a variable frequency power supply for high voltage test. Background technique [0002] On-site high-voltage tests must also follow the principles of high-voltage tests: the test must simulate the state of the operating field strength. Therefore, the AC voltage test can correctly find out the fault, but the DC test does not conform to the above high voltage test principle. The high-voltage test system used for cross-linked cables and SF6 insulated appliances (GIS, GIT) has high voltage and high power. Traditional test transformers or tuned resonance power supplies are not suitable for field use because of their heavy weight. The solution is to use an AC resonant power supply, which can reduce its weight by 15-20 times. At present, there are two ways of existing AC resonant power supply: one is the switching frequency conversion of SPWM modulation. Due to th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/44H02M7/162
Inventor 张晓国吴育华黄金成倪浩宏
Owner SIEYUAN ELECTRIC CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap