Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Arc extinction grounding device

A grounding device and arc suppression technology, applied in circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve problems such as dynamic response speed limitation, poor accuracy, grid resonance, etc. , to achieve the effect of fast compensation speed, high compensation accuracy and reducing operating loss

Active Publication Date: 2012-09-19
GUANGZHOU ZHIGUANG ELECTRIC CO LTD
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the arc suppressing coils used in the market can be divided into air-gap-adjusting type, turn-adjusting type, capacity-adjusting type and thyristor-adjusting type according to the principle and structure. Among them, the air-gap adjusting type has been gradually Out of use, the turn-adjusting type and the capacity-adjusting type cannot be continuously adjusted. Although the adjustable thyristor type can be continuously adjusted, a filter device needs to be installed, and the dynamic response speed is limited by the frequency of the power grid.
In addition, the above technical solutions all use large-capacity passive devices, which easily lead to grid resonance and large losses

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
  • Arc extinction grounding device
  • Arc extinction grounding device
  • Arc extinction grounding device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The arc-suppression grounding device provided by the present invention is a chain-type arc-suppression grounding device, and its main controller controls the output voltage of the power unit body, thereby controlling the output voltage of the commutation chain, and finally realizes the control of the compensation current. The present invention will be explained in detail below in conjunction with the accompanying drawings and embodiments.

[0018] Such as figure 1 As shown, the arc suppression and grounding device of the present invention includes: a reactor 1 , a commutation chain 2 , a phase-shifting transformer 3 , a main controller 4 , a voltage transformer 12 and a current transformer 13 .

[0019] The commutation chain 2 has several input terminals and two output terminals: a first output terminal and a second output terminal. The first output end is connected to the grid neutral point through the reactor 1, the second output end is grounded through the primary s...

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

The invention discloses an arc extinction grounding device. The arc extinction grounding device comprises an electric reactor, a current conversion chain, a phase-shifting transformer, a main controller, a voltage transformer and a current transformer. The main controller collects the voltage of a neutral point of a power grid by the voltage transformer, calculates the voltage output by the current conversion chain according to the collected voltage, and transmits a corresponding motion signal to control the voltage which is actually output by the current conversion chain to control the compensating current which is injected by the arc extinction grounding device to the power grid, so as to extinct arcs. The current conversion chain is used, and the compensating current is controlled by adjusting the output voltage of the current conversion chain, so that compared with traditional technical means, the arc extinction grounding device has the advantages of high compensating speed and precision; and moreover, electric reactors and capacitors which are large in capacity are eliminated, so that the running loss of the arc extinction grounding device is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of distribution network grounding, in particular to an arc suppression grounding device. Background technique [0002] The arc suppression coil is a grounding device widely used in distribution network (6kV, 10kV and 35kV power grid). The capacitive current reduces the grounding current at the fault point, reduces the initial speed and rising speed of the grounding arc recovery voltage, and achieves the purpose of extinguishing the arc. [0003] At present, the arc suppressing coils used in the market can be divided into air-gap-adjusting type, turn-adjusting type, capacity-adjusting type and thyristor-adjusting type according to the principle and structure. Among them, the air-gap adjusting type has been gradually Out of use, the turn-adjusting type and the capacity-adjusting type cannot be continuously adjusted. Although the adjustable thyristor type can be continuously adjusted, a filter device needs to ...

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 Applications(China)
IPC IPC(8): H02H9/08
Inventor 姜新宇石磊汤旭
Owner GUANGZHOU ZHIGUANG ELECTRIC CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com