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

Intelligent adjustment system and intelligent adjustment method for power system

A technology of intelligent regulation and power system, applied in the direction of system integration technology, information technology support system, electrical components, etc., can solve the problems of endangering the safe operation of the power grid and personal safety, damage to power equipment, insufficient reactive power compensation, etc., to ensure safety Reliable operation, protection of safe and stable operation, effects of suppressing transient overvoltage

Pending Publication Date: 2020-06-12
GUANGDONG POWER GRID CO LTD +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the theoretical calculation is often quite different from the actual situation on site, and after a period of operation, the nature of the load will also change greatly, especially harmonics. The actual situation on site is often far from the calculated value at the beginning of the design. Therefore, the fuses, capacitors, and reactors inside the parallel capacitor bank are often damaged, and what's more, the capacitor may explode, which seriously endangers the safe operation of the power grid and personal safety.
In addition, since the capacitance of the capacitor bank is fixed, it often occurs in the field that if one more capacitor is used, the reactive power compensation will be too much, and if one less capacitor is used, the reactive power compensation will be insufficient.
Furthermore, in the current AVC system, the opening and closing time points of the circuit breaker are random, which will lead to closing inrush current when closing, and transient overvoltage when opening, which will damage the power equipment in severe cases.

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 adjustment system and intelligent adjustment method for power system
  • Intelligent adjustment system and intelligent adjustment method for power system
  • Intelligent adjustment system and intelligent adjustment method for power system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Please refer to the attached figure 1 , is a schematic structural diagram of a power system intelligent adjustment system provided by Embodiment 1 of the present invention. The system specifically includes a power quality acquisition unit 1, a host computer 2, an intelligent regulation controller 3, a capacitor bank circuit breaker 5, and an adjustable power capacitor bank 4 connected in series with the capacitor bank circuit breaker 5;

[0033] The power quality acquisition unit 1, the intelligent regulation controller 3, the capacitor bank circuit breaker 5 and the power capacitor bank are respectively connected to the host 2, and the intelligent regulation controller 3, the capacitor bank circuit breaker 5 and the power capacitor bank 4 connected;

[0034] The power quality acquisition unit 1 is used to collect power quality data (including voltage, current, frequency, active and reactive power, harmonics,) and ambient temperature and humidity data of the power syst...

Embodiment 2

[0053] Please refer to figure 2 Embodiment 2 of the present invention provides a power system intelligent adjustment method, which is implemented by using the power system intelligent adjustment system described in Embodiment 1. The method includes:

[0054] S201. The power quality acquisition unit collects power quality data (including voltage, current, frequency, active and reactive power, harmonics) and ambient temperature and humidity of the power system, and sends them to the host computer;

[0055] S202. The host computer calculates the collected power quality data and analyzes the collected current and voltage waveforms, judges the capacitance, reactance rate, opening and closing error time required by the power system, and determines the opening and closing brake timing, so as to send corresponding adjustment instructions to the intelligent adjustment controller;

[0056] S203. The intelligent adjustment controller controls the power capacitor bank to adjust the capa...

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 intelligent adjustment system and an intelligent adjustment method for a power system. The intelligent adjustment system comprises a power quality acquisition unit, a host,an intelligent adjustment controller, a capacitor bank circuit breaker and a power capacitor bank. The power quality acquisition unit is used for acquiring power quality data and environment temperature and humidity data of a power system and sending the data to the host. The host is used for calculating and analyzing the electric energy quality data, judging the capacitance, reactance rate and switching-off and switching-on error time required by the power system and determining the switching-off and switching-on opportunity so as to send a corresponding adjustment instruction to the intelligent adjustment controller. The intelligent adjustment controller is used for controlling the power capacitor bank to adjust the capacitance and the reactance rate according to the adjustment instruction and carrying out switching-off and switching-on operation on the capacitor bank circuit breaker at preset time before the switching-off and switching-on opportunities according to the environment temperature and humidity. According to the invention, harmonic waves can be better suppressed, transient overvoltage can be suppressed, inrush current can be limited, and harmonic waves can be filtered, so that a power system is ensured, and safe and stable operation of a capacitor bank is protected.

Description

technical field [0001] The invention relates to the technical field of electric power system intelligent adjustment, in particular to an electric power system intelligent adjustment system and an intelligent adjustment method. Background technique [0002] In the current power system, the capacitance of the shunt capacitor bank and the reactance rate of the reactor are basically before the substation is put into operation, and the design unit refers to the reactive power compensation, harmonic , inrush current, etc. are calculated and then designed, produced, installed and put into operation. Because the theoretical calculation is often quite different from the actual situation on site, and after a period of operation, the nature of the load will also change greatly, especially harmonics. The actual situation on site is often far from the calculated value at the beginning of the design. Therefore, the fuses, capacitors, and reactors inside the parallel capacitor bank are of...

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): H02J3/18H02J13/00H02J3/01
CPCH02J3/01H02J3/1864Y02E40/30Y02E40/40Y02E40/70Y04S10/22Y04S10/52
Inventor 陈晓彬郑其彦孙玉彤
Owner GUANGDONG POWER GRID 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