Supercharge Your Innovation With Domain-Expert AI Agents!

A Sensitivity-Based Evaluation Method for Voltage Support Strength of Receiver System

A receiving end system, voltage support technology, applied in circuit devices, AC network circuits, power transmission AC networks, etc., to achieve the effect of simple steps and clear physical meaning

Active Publication Date: 2020-05-22
SOUTH CHINA UNIV OF TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current indicators based on grid structure parameters are still unable to consider the operation mode of the receiving end system, and it is difficult to meet the flexible and changeable status of the receiving end system

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 Sensitivity-Based Evaluation Method for Voltage Support Strength of Receiver System
  • A Sensitivity-Based Evaluation Method for Voltage Support Strength of Receiver System
  • A Sensitivity-Based Evaluation Method for Voltage Support Strength of Receiver System

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] This embodiment provides a method for evaluating the voltage support strength of the receiving end system based on sensitivity. The flow chart of the method is as followsfigure 1 shown, including the following steps:

[0034] S1. Define the voltage support strength factor R of the receiving end system at the DC drop point of the receiving end system VSF as follows:

[0035]

[0036] Among them, U iN is the commutation bus voltage at the inverter side under the rated state; ΔQ i is the tiny reactive power injected into the commutation bus; keep the active power injected into the commutation bus constant, ΔU i is the obtained small voltage change on the commutation bus; P diN The active power injected into the receiving end system for the DC system under the rated state;

[0037] S2. Define the voltage support strength factor C of the critical receiving end system RVSF , C RVSF is the voltage support strength factor of the receiving end system when the DC system ...

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 a sensitivity-based method for evaluating the voltage supporting strength of a receiving-end system. The method defines an index, namely the voltage supporting strength factorof the receiving-end system. Meanwhile, the critical value of the voltage supporting strength factor is defined through the critical power stability of a direct-current system. The voltage supportingstrength factor of the receiving-end system can be used for evaluating the voltage supporting strength of the receiving-end system. A stable domain stable in power under the rated state of the direct-current system is given based on the critical value. The voltage supporting strength factor of the receiving-end system can also be used for establishing the mathematical connection with the static voltage stability of a converter bus, so that the static voltage stability of the converter bus can be referenced. The method is good in adaptability when the grid structure, the operation mode or the internal power system element characteristic of the receiving-end system is charging. Therefore, the method can be adapted to the current changeable condition of the receiving-end system. The method has a wide application prospect.

Description

technical field [0001] The invention relates to the field of power system planning operation and control, in particular to a sensitivity-based evaluation method for voltage support strength of a receiving end system. Background technique [0002] With the implementation of my country's "West-to-East Power Transmission" strategy, a large number of high-voltage direct current transmission projects have been put into operation in my country, and a multi-circuit DC feed-in grid structure has been formed in the load centers such as the Yangtze River Delta and the Pearl River Delta, that is, the multi-feed DC system , referred to as "multi-infeed system". The increase in the capacity and number of DC systems fed into the same AC grid increases the risk of safe and stable operation of the grid, and brings a series of challenges to the normal operation of the grid. Therefore, it is very important to accurately measure the strength of the receiving end grid to ensure the good operati...

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): H02J3/36
CPCH02J3/36H02J2203/20Y02E60/60
Inventor 夏成军王真华夏谢家正李成翔
Owner SOUTH CHINA UNIV OF TECH
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