Power system transient voltage stability detection method and device

A transient voltage stabilization and power system technology, applied in the field of electric power, can solve the problems of not considering the influence of dynamic load voltage stability, unable to truly detect transient voltage stability, deviating from the actual power grid operation, etc., to improve safety. The effect of stable operating levels

Active Publication Date: 2019-12-10
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] At present, most of the traditional transient voltage stability evaluation methods do not consider the impact of a large number of dynamic loads in the system on voltage stability, which deviates from the actual power grid operation and cannot truly detect the transient voltage stability.

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 transient voltage stability detection method and device
  • Power system transient voltage stability detection method and device
  • Power system transient voltage stability detection method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The content of the present invention will be further described in detail below in conjunction with preferred embodiments and accompanying drawings. Apparently, the embodiments described below are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] It should be understood that although the terms "first", "second", etc. are used hereinafter to describe various information, these information should not be limited to these terms, and these terms are only used to distinguish information of the same type from each other. For example, "first" information may also be referred to as "second" information without departing from the scope of the present invention, and similarly, "second" information may also be referred to as "first" info...

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 relates to a method and a device for detecting stability of transient voltage of an electric power system. The method comprises the following steps of reading offline load parameters of a synthetic load model, wherein the offline load parameters include rotor impedance, stator impedance and excitation reactance of an equivalent motor and impedance of an equivalent static load; reading voltage at a load bus and active power at the load bus in real time; computing rotating speed of the equivalent motor at the next moment according to the offline load parameters, the active power at the load bus and the voltage at the load bus; computing recovery time of the rotating speed of the equivalent motor according to the offline load parameters, the rotating speed of the equivalent motor at the current moment and the rotating speed of the equivalent motor at the last moment; and determining stability parameters of the transient voltage according to the recovery time of the rotating speed of the equivalent motor. The method and the device put forward quantitative evaluation indexes for analysis of the stability of the transient voltage of the electric power system and have the advantages of simplicity, rapidity, high efficiency and the like.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a method and device for detecting transient voltage stability of a power system. Background technique [0002] Since the late 1980s, many voltage instability and even collapse accidents have occurred around the world, causing serious economic losses, making the voltage stability problem get more attention, and posing new challenges to the power system safety assessment. At present, the development of my country's energy and economy is extremely unbalanced, and my country's power grid has the main characteristics of large-capacity long-distance power transmission and large-scale receiving terminals, and the resulting voltage stability problems have become increasingly prominent. The detection of the transient voltage stability of the power system has always been an important factor related to the safe and stable operation of the power system. Therefore, the detection method of the tr...

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): G06F17/50
CPCG06F30/20
Inventor 熊文谢小荣王斐董宜鹏阳曾赵宏伟尚慧玉叶萌刘金生
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap