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

Intelligent series compensation device for distribution network and use method of compensation device

A series compensation and network distribution technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, etc., can solve problems such as series compensation capacitor overvoltage, line three-phase imbalance, maintenance difficulties, etc., to reduce the possibility of Sexuality, simple, economical and reliable results

Inactive Publication Date: 2014-04-02
STATE GRID CORP OF CHINA +3
View PDF7 Cites 33 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of protection equipment is complicated to implement, large in size, expensive, and difficult to maintain.
[0007] (3) If one or several capacitors in the capacitor bank of the series compensation device are damaged, the phase voltage and current will change, resulting in three-phase unbalance of the line
The excitation inrush current caused by the reclosing phenomenon of the distribution line will cause the overvoltage of the series compensation capacitor, thus affecting the safe operation and service life of the equipment
[0009] (5) The operating conditions of the existing series compensation device lack the means to obtain real-time information, including input / bypass, whether the switch and capacitor equipment are normal, whether the secondary equipment is normal, etc.
Such a device works well, but the structure is too complicated

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
  • Intelligent series compensation device for distribution network and use method of compensation device
  • Intelligent series compensation device for distribution network and use method of compensation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Take the 10kV distribution network as an example, such as figure 1As shown, an intelligent distribution network series compensation device includes a switching operation switch 1, a sensor 2, a capacitor bank 3, a protection device 4, a photoelectric conversion system 5 and a controller 6, wherein the switching operation switch 1 It includes: a switching circuit breaker 1.1, the two ends of the switching circuit breaker 1.1 are respectively connected to the first isolation switch 1.2 and the second isolation switch 1.3; the sensor 2 includes a line voltage transformer 2.1 and a current transformer 2.2 connected together and a capacitor bank voltage transformer 2.3; the capacitor bank 3 is a three-phase capacitor; the protection device 4 includes: a three-phase high voltage thyristor valve 4.1, an integrated damping reactance resistor 4.2 and a bypass contactor 4.3, the The photoelectric conversion system 5 includes a photoelectric converter 5.2, and is connected to 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 develops an intelligent series compensation device for a distribution network and a use method of the compensation device. The device has the effects of improving the distribution of voltage along a power distribution line, reducing voltage drop and improving the transmission capacity of the line and has the characteristics of load-self-adaptive voltage regulation and real-time response. In order to achieve the effects, the intelligent series compensation device for the distribution network comprises a capacitor group, a silicon controlled rectifier, a controller, an integrated reactor / resistor, a circuit breaker, a contactor, an isolating switch and a sensor. Due to the adoption of the technical scheme, when a system normally works, the voltage which is compensated by series capacitors can automatically respond to the variation of load current in real time without any extra control; when a failure occurs in the system, the warning, the short-time bypass and the protection of the device can be realized through the operation of the controller on a switch.

Description

technical field [0001] The invention belongs to the field of voltage quality control of distribution networks, and in particular relates to an intelligent distribution network series compensation device for 10kV distribution lines and a use method thereof. Background technique [0002] As we all know, the voltage quality of distribution network is an important indicator to measure whether the quality of power supply meets the standard. Its quality is directly related to the safe and economic operation of electrical equipment and the normal operation of production. Power users have increasingly higher requirements for voltage quality. However, the construction of my country's distribution network is seriously lagging behind that of the transmission network. Its grid structure is weak, the facilities are aging, the wire diameter is small, the line is long-especially the mountain village line-the number of distribution transformers is large, and even many lines have multiple la...

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): H02J3/18
CPCY02E40/30
Inventor 梁一桥钱晓俊陈国成徐爱良汪卫国张照锋彭江张琳饶崇林吕佳铭彭新贵
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