Check patentability & draft patents in minutes with Patsnap Eureka AI!

A grid reactive power control method, device and system

A control system and power grid technology, applied in reactive power compensation, emergency treatment AC circuit layout, AC network voltage adjustment, etc. Comprehensive reactive power demand and the effect of improving control efficiency

Active Publication Date: 2018-11-02
STATE GRID SHANDONG ELECTRIC POWER +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, what the present invention aims to solve is the problem that the adjustment operation of the existing power grid reactive power control system is easy to cause confusion and low efficiency

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
  • A grid reactive power control method, device and system
  • A grid reactive power control method, device and system
  • A grid reactive power control method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An embodiment of the present invention provides a grid reactive power control method, the method consists of figure 1 The magnetron reactor controller 13 in the system shown performs as figure 2 The method shown includes:

[0029] S1. Obtain the reactive power demand of the grid bus sent by the AVC system. The reactive power demand of the grid bus is the real-time bus data such as the bus voltage and reactive power of the entire network collected by the AVC system, and predicted by a specific algorithm before setting the target voltage. The bus reactive power that needs to be injected into the grid under the value. In actual use, the MCR controller can be connected with the AVC system, and the AVC system will automatically send the reactive power demand to the MCR controller.

[0030] S2, generating a pulse control signal according to the reactive power demand of the bus, that is, the frequency, current, voltage and other parameters of the control signal are calculat...

Embodiment 2

[0039] An embodiment of the present invention provides a grid reactive power control system, such as image 3 As shown, the system includes:

[0040] The AVC system 31 is used to collect grid bus data, and calculate the reactive power demand of the grid bus according to the bus data. The AVC system can collect the parameters of each node (substation at all levels), and calculate the reactive power of the whole network according to each node. Work demand;

[0041] The MCR controller 32 is connected with the AVC system, and is used to receive the reactive power demand of the grid bus, and generate a pulse control signal according to the reactive power demand of the grid bus;

[0042] Valve group box 33 and MCR34, the valve group box is connected with the MCR controller, the valve group box is used to receive the pulse control signal, and perform phase-shift trigger control on the MCR according to the pulse control signal To change the capacity of the MCR, the MCR outputs react...

Embodiment 3

[0047] The embodiment of the present invention provides another grid reactive power control system. The difference from the previous embodiment is that the MCR controller in this embodiment can also perform local closed-loop control and manual control, such as image 3 The system shown includes:

[0048] The AVC system 31 is used to collect grid bus data, and calculate the reactive power demand of the first bus according to the bus data, that is, the reactive power demand calculated according to the parameters of the whole network;

[0049] MCR controller 32, connected with the AVC system, is used to receive the reactive power demand of the first bus, and is also used to collect the local bus data, and calculate the reactive power demand of the second bus according to the local bus data (according to the local The reactive power demand calculated by the parameters) is also used to receive the control command input by the user, and generate a pulse control signal according to o...

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 reactive power control method, device and system for a power grid. The method comprises the following steps: obtaining a reactive power demand of a bus sent by an automatic voltage control system; generating a pulse control signal according to the reactive power demand of the bus; and sending the pulse control signal to a valve bank box of a magnetically controlled reactor.

Description

technical field [0001] The invention relates to the field of reactive power compensation of smart grids, in particular to a grid reactive power control method, device and system. Background technique [0002] The Automatic Voltage Control (AVC) system is a system used to ensure power quality, improve power transmission efficiency, reduce network loss, and achieve stable and economical operation. The AVC system is set up in the power plant. The dispatching automation system collects real-time data such as telemetry and telesignaling of each node (substation at all levels) for online analysis and calculation. The online voltage reactive power analysis is carried out with the constraints of the voltage of each node and the power factor of the gateway as constraints. Optimized control to achieve the comprehensive optimization goals of the least adjustment times of the main transformer tap changer, the most reasonable capacitor switching, the optimal reactive power output of the ...

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 Patents(China)
IPC IPC(8): H02J3/16
CPCH02J3/001H02J3/16Y02E40/30Y02P80/14
Inventor 撖奥洋于立涛徐超张滨董林舒秋艳崔伟亮
Owner STATE GRID SHANDONG ELECTRIC POWER
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com