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

A method for obtaining reliability of VSC based multi-terminal DC system

A multi-terminal DC, reliable technology, applied in special data processing applications, measuring devices, instruments, etc., can solve problems such as errors, and achieve the effect of high accuracy and simple operation

Active Publication Date: 2015-04-22
XI AN JIAOTONG UNIV +1
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these simplifications and approximations are bound to introduce errors

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 method for obtaining reliability of VSC based multi-terminal DC system
  • A method for obtaining reliability of VSC based multi-terminal DC system
  • A method for obtaining reliability of VSC based multi-terminal DC system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment will specifically illustrate the process of obtaining the path equivalent model. Elements 1-3 are AC systems, 4-6 are converter transformers, 7-9 are converter modules, and 10-18 are DC cables or neutral wires , 21-38 are DC circuit breakers, 19, 20, 39 are AC circuit breakers, the lines composed of 21, 10 and 22, the lines composed of 27, 13 and 28 are positive lines, the lines composed of 25, 12 and 26 and The line composed of 31, 15 and 32 is the negative line, the line composed of 23, 11 and 24, and the line composed of 29, 14 and 30 is the neutral line. neutral cable to model.

[0044] Firstly, the initial model used to describe the topological connection relationship of each component of the original system is obtained. Then the adjacency list is used to represent the connection relationship of each component, and the adjacency list A is obtained, and the adjacency list A is used to obtain the protection area of ​​each component. The adjacency lis...

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 present invention discloses a method for obtaining reliability of a VSC based multi-terminal DC system, and the method includes the following steps: firstly performing topology identification on the multi-terminal DC system; establishing an equivalent model of the system using an equivalent DC circuit element; identifying the minimum path set of the system from the equivalent model; enumerating situations of trebling and less of element failures; analyzing each system failure state; calculating an increment frequency and probability of occurring of the failure state; correcting the maximum flow parameter of the DC circuit element; calculating an output power of the system through a network flow method to obtain an off-the-line table of the system; and taking different decisions to cope with the failure by considering different wiring modes, operational approaches, and DC circuits during the procedure of analyzing the failure state. The method for obtaining reliability of VSC based multi-terminal DC system of the present invention can accurately obtain the reliability of the multi-terminal DC system and have high universality.

Description

technical field [0001] The invention belongs to the field of power system reliability analysis, and relates to a method for obtaining the reliability of a multi-terminal DC system, in particular to a method for obtaining the reliability of a VSC-based multi-terminal DC system. Background technique [0002] In recent years, the actual projects of HVDC transmission have been increasing. This technology is currently mainly used for long-distance high-power transmission, large-scale networking, and underground or submarine cable power transmission. The improvement of its reliability will also bring huge benefits to the safe, reliable and economical operation of the entire power system. Therefore, it is a very important task to quantitatively evaluate the reliability of HVDC transmission system, analyze various influencing factors, and propose corresponding countermeasures. [0003] With the rapid development of the economy, the traditional AC transmission and point-to-point hig...

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
IPC IPC(8): G06F19/00G01R31/00
Inventor 王锡凡王碧阳宁联辉陈鹏
Owner XI AN JIAOTONG UNIV
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