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

Power system voltage stability control method and system

A voltage stabilization and power system technology, applied in the field of power system voltage stabilization control methods and systems, can solve problems such as combined control instability, and achieve the effects of improving transient voltage stability, continuous regulation, and low cost

Active Publication Date: 2016-06-15
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the unstable problem of the combination control of the existing static synchronous compensator and mechanical switching capacitor, the present invention provides a power system voltage stability control method, which can improve the stability of the combined control of static synchronous compensator and mechanical switching capacitor performance, improve the utilization efficiency of static synchronous compensator

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
  • Power system voltage stability control method and system
  • Power system voltage stability control method and system
  • Power system voltage stability control method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] The power system voltage stability control method of the present invention can be applied to such as figure 1 In the power system shown, in the power system, a static synchronous compensator (STATCOM) and a plurality of mechanical switched capacitors (MSC) are connected in parallel on the same bus, so as to speed up The response speed and dynamic range of power compensation can reasonably allocate the reactive power demand of the system to STATCOM and MSC in steady state.

[0054] see figure 2 , figure 2 It is a schematic flow chart of the power system voltage stability control method of the present invention.

[0055] The power system voltage stability control method includes:

[0056] A voltage stability control method for a power system, based on a static synchronous compensator and a mechanically switched capacitor, comprising steady-state control steps:

[0057] a) Acquire reactive parameters, including the reactive power demand reference value Q provided by ...

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 power system voltage stability control method and system. The number of actually should be invested MSC (Mechanical Switching Container) groups is decided based on an STATCOM (Static Synchronous Compensator) and the MSCs according to a reactive power requirement reference value and the rated reactive capacity of an SATCOM and the MSC and the output reactive capacity of the SATCOM is obtained according to a target parameter and the number of the MSC groups. If the reactive power required reference value provided by an automatic voltage control system is a voltage reference value, the reactive power required reference value can be converted into the reactive reference value through outer ring PI control and then capacity distribution composite control can be performed. When the reactive power requirement exceeds a composite output general reactive capacity range of the STATCOM and the MSCs, the reactive compensation capacity is invested farthest and the residual reactive power requirement is provided by a reactive-load compensation equipment of a nearby transformer substation. The power system voltage stability control method and system can improve the composite control stability and improve the STATCOM utilization efficiency.

Description

technical field [0001] The invention relates to the technical field of power system voltage stability control, in particular to a power system voltage stability control method and system thereof. Background technique [0002] In recent years, a number of voltage instabilities in the world have caused large-scale power outages, which have brought huge economic losses and adverse social impacts, and posed severe challenges to the safe and stable operation of power systems. At present, installing reactive power compensation equipment is one of the important methods to improve the voltage stability of power system. However, the traditional compensation is mainly based on mechanical switched capacitors (English abbreviation MSC), which has a slow response speed and is suitable for steady-state control; with the development of power electronics technology and corresponding control technology, static capacitors with fast response and adjustment speed Synchronous compensator (abbre...

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): H02J3/18H02J3/12
CPCY02E40/10
Inventor 刘育权谢小荣叶萌侯建兰王珂袁志昌王斐孙英云蔡莹
Owner GUANGZHOU POWER SUPPLY BUREAU 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

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