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

An Online Static Security Analysis Method with n-2 Break Fast Scanning Function

A static security analysis and fast scanning technology, applied in the field of analysis, can solve problems such as increased calculation amount and large number of fault combinations, achieve the effect of reduced calculation amount, satisfactory calculation result accuracy, and improved analysis and calculation speed

Active Publication Date: 2016-09-21
STATE GRID CORP OF CHINA +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For N-2 breaking faults, due to the huge number of fault combinations, the overall calculation amount is significantly increased compared with N-1 breaking. At present, it is rarely considered in the actual online static safety analysis software. The bottleneck is mainly the calculation speed.

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
  • An Online Static Security Analysis Method with n-2 Break Fast Scanning Function
  • An Online Static Security Analysis Method with n-2 Break Fast Scanning Function
  • An Online Static Security Analysis Method with n-2 Break Fast Scanning Function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The present invention will be further exchanged and described below in conjunction with the accompanying drawings.

[0036] Such as figure 1 , the present invention provides a kind of on-line static safety analysis method with N-2 disconnection fast scanning function, described method comprises the following steps:

[0037] Step 1: Form the current grid impedance matrix;

[0038] Step 2: Determine the distribution factor matrix of branch disconnection;

[0039] Step 3: Calculate the active power flow of each branch after the N-2 breaking fault based on the branch breaking distribution factor, and screen out the suspicious serious N-2 breaking fault set;

[0040] Step 4: Conduct AC power flow analysis on suspicious serious N-2 breaking faults, and determine the final serious N-2 breaking faults;

[0041] Step 5: Output a serious N-2 disconnection fault set, and give an alarm message.

[0042] In the step 1, the current grid impedance matrix is ​​represented by X, X i...

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 an online static safety analysis method with N-2 disconnection fast scanning function, comprising the following steps: forming the current grid impedance matrix; determining the branch circuit disconnection distribution factor matrix; based on the branch circuit disconnection distribution factor, calculating N The active power flow of each branch after the ‑2 breaking fault is screened out the set of suspicious serious N‑2 breaking faults; the AC power flow analysis is performed on the suspicious serious N‑2 breaking faults to determine the final serious N‑2 breaking faults ;Output serious N-2 breaking fault set, and give alarm information. The present invention introduces the full set of N-2 breaking fault combinations into the expected fault set, and uses the branch breaking distribution factor and parallel computing technology to quickly scan the power flow distribution after N-2 breaking; for suspicious N-2 breaking combinations, Conduct AC power flow analysis; the entire calculation process is efficient and fast, meeting the needs of online applications.

Description

technical field [0001] The invention relates to an analysis method, in particular to an online static safety analysis method with N-2 disconnection fast scanning function. Background technique [0002] The purpose of power system safety analysis is to use the method of predictive accident analysis to predict whether there are potential safety hazards in the system, so that corresponding measures can be taken early to prevent major accidents in the system. Several blackouts occurred in the United States in the mid-1860s, which promoted the progress of power system security analysis. Power system security analysis mainly includes static security analysis and dynamic security analysis. Static safety analysis judges whether the system will be overloaded or the voltage exceeds the limit after the anticipated accident occurs; dynamic safety analysis judges whether the system will lose stability after the anticipated accident occurs. [0003] At present, the online static securit...

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): H02J3/00
Inventor 汤必强於益军姚建国杨胜春冯树海杨争林李峰王礼文石飞徐鹏
Owner STATE GRID CORP OF CHINA
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