Monitoring system of fault current limiter

A fault current limiter and monitoring system technology, which is applied to emergency protection circuit devices, instruments, and measuring devices for limiting overcurrent/overvoltage, and can solve power accidents, heating temperature rise, and voltage limiter damage And other issues

Inactive Publication Date: 2016-03-09
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the huge short-circuit current absorbed by the metal oxide voltage limiter MOV, it will cause the self-heating temperature to rise.
The temperature and short-circui

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
  • Monitoring system of fault current limiter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0017] Such as figure 1 -Shown, a monitoring system for a fault current limiter, including a voltage limiter MOV, a reactor L, a capacitor C, a relay coil T0, a relay switch T1 and a temperature monitoring system, the voltage limiter MOV and the relay switch After T1 is connected in series and connected in parallel at both ends of the capacitor C, its parallel output end is connected to one end of the reactor L, and the other end of the reactor L is connected to the relay coil T0, and the temperature detection system includes sequential connection The wireless temperature sensor 1, the wireless transmission unit 2, the intelligent temperature monitor 3, and the background monitoring center 4, and the wireless temperature sensor 1 is connected to the voltage limiter MOV.

[0018] The relay switch T1 is a normally closed switch.

[0019] The wireles...

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 monitoring system of a fault current limiter. The system comprises a voltage limiter MOV, a reactor L, a capacitor C, a relay coil T0, a relay switch T1 and a temperature monitoring system, wherein the voltage limiter MOV and the relay switch T1 are connected in series and then connected to the two ends of the capacitor C in parallel; the parallel output end of the capacitor C is connected with one end of the reactor L and the other end of the reactor L is connected with the relay coil T0; the temperature monitoring system comprises a wireless temperature sensor, a wireless transmission unit, an intelligent temperature monitor and a background monitoring center; the wireless temperature sensor is connected with the voltage limiter MOV. The monitoring system of the fault current limiter achieves a triple protective function for the current limiter by simple structural system settings.

Description

Technical field [0001] The invention relates to the field of power control, and in particular to a monitoring system for a fault current limiter. Background technique [0002] With the continuous expansion of the transmission capacity of the power system, the short-circuit current level of the power grid is also increasing. Limiting the short-circuit current has become an important issue in the development of modern power grids. The series resonance fault current limiter can not only limit the short-circuit current to a lower level, but also has the advantages of high operational reliability, automatic switching without additional control, low price and good technical and economic performance. When the system fails, the short-circuit current will pass through the series capacitor, and the metal oxide voltage limiter MOV is connected in parallel at both ends of the capacitor. The function is to prevent the capacitor from overvoltage damage and limit the voltage across the capacito...

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
IPC IPC(8): H02H9/04G01K1/02G01K1/024
CPCH02H9/041H02H9/042G01K1/024
Inventor 秦立军郭京
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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