Average value modeling and control method applicable to VSC-MTDC(Voltage Sourced Converters Multi-terminal Direct Current) system

A control method and averaging technology, applied in the direction of AC network circuits, circuit devices, power transmission AC networks, etc.

Inactive Publication Date: 2016-12-07
SHANGHAI JIAO TONG UNIV
View PDF2 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in HVDC technology, the average value model of the converter is not common, and there are few article...

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
  • Average value modeling and control method applicable to VSC-MTDC(Voltage Sourced Converters Multi-terminal Direct Current) system
  • Average value modeling and control method applicable to VSC-MTDC(Voltage Sourced Converters Multi-terminal Direct Current) system
  • Average value modeling and control method applicable to VSC-MTDC(Voltage Sourced Converters Multi-terminal Direct Current) system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0099] Application of mean modeling and methods for VSC-MTDC systems. Using the simulation software MATLAB / Simulink to build a 3-terminal DC transmission system, in which VSC3 is connected to the wind farm, the power fluctuations are relatively frequent, and digital simulation research is carried out to compare the dynamic response of the VSC detailed model and the average model. The simulation parameters are listed in Table 1 and Table 2. The response process of the system under the following working conditions is discussed, namely: (1) In normal working state, the active power of the VSC3 converter station changes abruptly; (2) A single-phase ground fault occurs in VSC1; (3) The DC fault occurs in the system.

[0100] Table 1 Simulation parameters

[0101]

[0102]

[0103] Table 2 Initial working status of the converter station

[0104]

[0105] (1) In normal working state, the active power of VSC3 converter station side changes suddenly;

[0106] Figures 9 to...

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 average value modeling and control method applicable to a VSC-MTDC (Voltage Sourced Converters Multi-terminal Direct Current) system. The method comprises the following steps of 1, building a mathematical model of a VSC based on d and q rotational coordinates, and calculating active power and reactive power of an AC side of a converter by combining a VSC-MTDC power transmission system; 2, building a VSC-MTDC controller by taking the active power and the reactive power of the AC side of the converter as reference values to achieve cooperative control of a plurality of converter stations; and 3, simplifying a control process of the VSC-MTDC, and building a VSC-MTDC average value model. The average value model can be applied to a multi-terminal direct current power transmission system, the simulation speed is greatly increased, the simulation efficiency is improved, and the mathematical calculation amount is reduced.

Description

technical field [0001] The present invention relates to the field of electrical engineering, in particular to an average value modeling and control method applicable to a VSC-MTDC (Voltage Sourced Converters Multi-terminal Direct Current, multi-terminal direct current transmission of voltage source converter) system. Background technique [0002] Compared with the traditional current source converter power transmission technology, the DC transmission system based on the voltage source converter can realize independent control of active power and reactive power, and can be applied to connect scattered small power plants and asynchronous operation systems, and build cities Various occasions such as DC transmission and distribution network and providing economical power to remote areas and isolated islands. At the same time, the modern VSC-HVDC (Voltage Source Converters-High Voltage Direct Current, DC transmission of voltage source converter) system has an integrated and modul...

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): H02J3/36
CPCH02J3/36H02J2203/20Y02E60/60
Inventor 江斌开王志新
Owner SHANGHAI JIAO TONG UNIV
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