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

Switching overvoltage suppression device

A technology for operating overvoltage and suppressing devices, applied in circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, emergency protection circuit devices, etc., can solve resistance damage, resistance heating speed too fast, resistance overheating Explosion and other problems, to achieve the effect of preventing injury and preventing the influence of heat

Active Publication Date: 2014-12-24
STATE GRID CORP OF CHINA +1
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the vibration generated in the transmission line is large, it is easy to use a closing resistor and a circuit breaker to cause the resistance to heat too fast when the circuit breaker is closing, resulting in damage to the resistance, and the main switch cannot be activated in the closing circuit in time. Closed after closing, it is easy to cause the resistor to overheat and explode
Therefore, there are still defects in the opening and closing system, which affects the stability and reliability of the EHV transmission system in the long-term transmission operation

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
  • Switching overvoltage suppression device
  • Switching overvoltage suppression device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The operating overvoltage suppression device includes a main switch circuit, a closing damping circuit and a voltage equalizing circuit. The main switching circuit is connected in parallel with the closing damping circuit and the voltage equalizing circuit. The closing resistor 1, closing switch 1, closing resistor 2 and closing switch 2, the voltage equalizing circuit adopts the voltage equalizing capacitor 1 and the voltage equalizing capacitor 2 in series, or adopts the RC voltage equalizing circuit 1 and RC equalizing circuit in series Circuit 2, the connection between the first voltage equalizing capacitor and the second equalizing capacitor in series, or the connection between the first RC voltage equalizing circuit and the second RC voltage equalizing circuit connected in series with the connection between the first closing switch and the second closing resistor .

[0014] The closing resistor is mainly used to weaken the electromagnetic oscillation and limit the...

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 provides a switching overvoltage suppression device. The device comprises a main switch circuit, a closing damping circuit and a voltage sharing circuit; the main switch circuit is connected in parallel with the closing damping circuit and the voltage sharing circuit. The device is characterized in that a protecting circuit is also connected in parallel for protecting from overvoltage; a sampling unit and a transmission unit are arranged to sample and transmit data. According to the switching overvoltage suppression device, a multi-closing switch structure is adopted to reliably prevent the influence caused by the heating of single closing switch; a parallel connecting protecting device is adopted to prevent the device from being damaged by overvoltage; a monitoring device is adopted to monitor the suppression device and confirm the working state of the suppression device; therefore, the device has the reliability and stability for ensuring long-term running.

Description

technical field [0001] The invention relates to an overvoltage suppression device for an ultra-high voltage system, in particular to an operation overvoltage suppressor. Background technique [0002] In the ultra-high voltage system, the overvoltage caused by the internal reasons of the power system is called internal overvoltage. This is because there are electric field inertial elements (capacitors) and magnetic field inertial elements (inductance) in the power system. When the circuit breaker is operated (including normal operation and accident operation), the power system will transition from one stable state to another. In a stable state, the electromagnetic field energy in the system components needs to be redistributed. This is an oscillation process. When the system parameters are improperly matched, a high overvoltage will appear. Internal overvoltage includes two types, transient overvoltage and operating overvoltage. Since most high-voltage transmission lines hav...

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): H02H9/04
Inventor 王超齐征丁华伟杨峰高立飞
Owner STATE GRID CORP OF CHINA
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