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

AVC control method and system based on coordinated control of phase modifier and capacitor bank, and medium

A technology of coordinated control and capacitor bank, which is applied in the direction of system integration technology, information technology support system, and AC network with the same frequency from different sources, etc., can solve the problem of narrow adjustment range, achieve widening range, facilitate technology upgrading, good compatibility

Inactive Publication Date: 2020-01-03
STATE GRID HUNAN ELECTRIC POWER +2
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking Shaoshan Converter Station as an example, under the current control mode of each SC configured in the station, the steady-state reactive power output of a single unit is within ±50MVar, that is, the current control command Q AVC The adjustment range is within ±100MVar, which is relatively narrow

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
  • AVC control method and system based on coordinated control of phase modifier and capacitor bank, and medium
  • AVC control method and system based on coordinated control of phase modifier and capacitor bank, and medium
  • AVC control method and system based on coordinated control of phase modifier and capacitor bank, and medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The following will take the AVC control of the coordinated control of the condenser and the capacitor bank of the Shaoshan converter station with two condensers SC as an example to further describe the AVC control method, system and medium based on the coordinated control of the condenser and the capacitor bank of the present invention. Detailed description.

[0039] Such as figure 1 As shown, the implementation steps of the AVC control method based on the coordinated control of the condenser and the capacitor bank in this embodiment include:

[0040] 1) Check whether the AVC master station has issued the control command Q AVC , if so, execute step 2), otherwise end;

[0041] 2) If the control instruction Q AVC If the value of is within the first specified threshold range, step 3) is executed, if the control command Q AVC If the value is within the second specified threshold range, step 5) is performed, otherwise end;

[0042] 3) Detect whether a group of backup ca...

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 AVC control method and system based on coordinated control of a phase modifier and a capacitor bank, and a medium. The method comprises the following steps: if a control instruction is within a first specified threshold range, when a set of standby capacitors is brought into AVC coordinated control, the standby capacitors are switched off, and reactive power output is conducted on the control instruction through a phase modifier after power distribution; if the value of the control instruction is within a second specified threshold range, whether there is a set of standby capacitors brought into AVC coordinated control or not is detected; if there is no set of standby capacitors brought into AVC coordinated control, short-time reactive power output is conducted on the control instruction through the phase modifier after power distribution, a set of standby capacitors is switched in, and reactive power reserve of the phase modifier is released; and if there isa set of standby capacitors brought into AVC coordinated control, average output is performed by the phase modifier after the capacitor capacity is subtracted from the control instruction. Under thecondition that the change in available dynamic reactive power reserve of the phase modifier is small, the range of the control instruction can be increased and widened without greatly affecting the reactive group switching instruction of an original DC control and protection system. The method has the advantages of being good in compatibility and convenient for technical upgrade and reconstruction.

Description

technical field [0001] The invention relates to power system operation and control, in particular to an AVC control method, system and medium based on coordinated control of a condenser and a capacitor bank. Background technique [0002] With the rapid development of UHV DC in my country, the large-scale development of clean energy, and the concentration of a large proportion of power-receiving areas, the characteristics of the power grid have undergone major changes, and the problems of dynamic reactive power reserve decline and insufficient voltage support in some areas have become more prominent. The voltage stability problem has become one of the main problems of the safety and stability of the large power grid. In order to improve the dynamic reactive power compensation capability of the power grid and increase the dynamic reactive power reserve level of the regional power grid, it is usually considered to install a dynamic reactive power compensation device to improve t...

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): H02J3/18H02J3/50H02J3/36H02J3/06H02J13/00
CPCH02J3/06H02J3/18H02J3/1821H02J3/36H02J3/50Y02E40/30Y02E40/70Y02E60/60Y04S10/12
Inventor 李辉周挺汪霄飞洪权宋军英毛文奇欧阳帆朱维钧吴晋波梁文武徐浩郭思源沈杨臧欣刘海峰余斌严亚兵
Owner STATE GRID HUNAN ELECTRIC POWER
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