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

Method for automatically and parallelly operating phase-control arc suppression coils

A technology of arc suppression coil and operation method, which is applied to emergency protection circuit devices, electrical components, circuit devices and other directions for limiting overcurrent/overvoltage, so as to prevent misjudgment and reduce production costs.

Active Publication Date: 2015-02-18
XUJI GRP +2
View PDF10 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for automatic parallel operation of phase-controlled arc suppressing coils to solve the problem in the prior art that the hard contact signal of the bus tie circuit breaker needs to be connected

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
  • Method for automatically and parallelly operating phase-control arc suppression coils
  • Method for automatically and parallelly operating phase-control arc suppression coils

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] Such as figure 1 The distribution network shown includes busbar I and busbar II, and the two busbars are connected through a bus tie circuit breaker. A set of arc suppressing coil device is installed on each bus, including the bus 1 grounding transformer 2 connected to the bus, the grounding transformer 2 provides a neutral point, and the voltage transformer 3 is used to measure the neutral point voltage. The controller 5 compensates the capacitive current by controlling the phase-controlled arc suppression coil 4 . By monitoring the voltage collected by the voltage transformer 3, the status of the bus tie circuit breaker 6 can be analyzed.

[0018] Such as figure 2 , a method for realizing automatic parallel operation of phase-controlled arc suppression coils, including the following steps:

[0019] In the first step, the voltage transformer 3 sa...

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 relates to a method for automatically and parallelly operating phase-control arc suppression coils. Software functional modules are arranged in an arc suppression coil controller, so that the method can be implemented. The method includes implementation steps of continuously adjusting an angle of a silicon-controlled rectifier of a phase-control arc suppression coil; synchronously detecting change of zero-sequence voltages of neutral points of the other arc suppression coil and identifying operating states of the two arc suppression coils by the aid of the software functional modules of the controller; distributing compensating capacitive currents for the various arc suppression coils by the aid of set distributing principles according to the operating states. The method has the advantages that the requirement that bus tie contact signals need to be acquired from bus tie switch cabinets when the traditional arc suppression coils are parallelly operated can be omitted, electric characteristics of the phase-control arc suppression coils are sufficiently utilized and are combined with software analysis and computation, and accordingly automatic parallel operating functions can be realized.

Description

technical field [0001] The invention relates to the technical field of resonance grounding of power distribution networks, in particular to a method for automatic parallel operation of phase-controlled arc suppression coils. Background technique [0002] The phase-controlled arc suppression coil grounding device has been widely used in 110kV~220kV substations in China. In most substations, a set of arc suppressing coil device is installed on each section of the main busbar (10kV~66kV), and the (10kV~66kV) system is mostly a double busbar or multi-busbar structure. Therefore, the arc suppression coil device must be able to realize the parallel operation function. Especially the phase-controlled arc suppressing coil, because this method is a follow-up type (that is, when the system is running normally, the arc suppressing coil is far away from the resonance point, and after a single-phase ground fault occurs, the arc suppressing coil is adjusted to be close to the resonance p...

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): H02H9/08
Inventor 常会军邓书举李华清曹廷根李栋梁黄艳斌
Owner XUJI GRP
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