VSC-HVDC converter station fault recognition device and method based on VMD-ELM

A VSC-HVDC, fault identification technology, applied in the field of HVDC power transmission diagnosis, can solve the problems of low identification accuracy, difficult extraction, fault signal interference, etc., to reduce planned maintenance time and unplanned maintenance time, reduce equipment Failure downtime, ensuring the effect of equipment operation

Active Publication Date: 2019-09-27
KUNMING UNIV OF SCI & TECH
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the converter station fails, it will affect the normal operation of the entire system and even cause serious accidents
The converter is the key equipment in the converter station of the VSC-HVDC system. The short-circuit fault is a typical fault. Due to the influence of the carrier noise generated by the converter, it is difficult to extract the signal features, and t

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
  • VSC-HVDC converter station fault recognition device and method based on VMD-ELM
  • VSC-HVDC converter station fault recognition device and method based on VMD-ELM
  • VSC-HVDC converter station fault recognition device and method based on VMD-ELM

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1: A VSC-HVDC converter station fault identification device based on VMD-ELM, such as figure 1 As shown, it includes a signal acquisition module, a data processing module, a status recognition module, and an alarm module;

[0027] The signal acquisition module includes a VSC-HVDC converter station and a current sensor; it is used to collect electrical signals through a current sensor fixed on the bus of the VSC-HVDC converter station based on a voltage source converter;

[0028] The data processing module is used to perform VMD decomposition on the collected electrical signals to obtain modal components, then calculate the autocorrelation function of each modal component, and select the effective modal component according to the energy concentration of the autocorrelation function, which will be effective Reconstruction of modal components to obtain reduced-noise signals, so as to realize the noise reduction processing of electrical signals; calculate the root mean sq...

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 VSC-HVDC converter station fault recognition device and method based on VMD-ELM. The device comprises a signal acquisition module, a data processing module, a state identification module and an alarm module. The device and method is provided for the particularity of the electric signal of the converter station in a VSC-HVDC system; by using the fault diagnosis device, the real-time state monitoring of the operation of the converter station can be realized, the operation condition of the equipment can be quickly and visually reflected, reliable equipment operation information can be provided for equipment maintenance personnel in time, and the equipment operation can be effectively ensured, so that the equipment fault shutdown time is reduced, and the planned maintenance time and the unplanned maintenance time are reduced.

Description

technical field [0001] The invention relates to a VMD-ELM-based VSC-HVDC converter station fault identification device and method, and belongs to the technical field of high-voltage direct current transmission diagnosis. Background technique [0002] The new high-voltage direct current transmission technology (VSC-HVDC) has been widely used in long-distance high-power transmission, submarine cable power transmission, asynchronous connection between AC systems with different rated frequencies or the same rated frequency, etc. The system mainly includes two parts, the converter station and the line. When the same power is transmitted, it has the advantages of low line cost and small line active power loss. However, how to ensure the safety and stability of the system operation is an urgent problem to be solved. [0003] The converter station is the core part of the VSC-HVDC system. The standardization and miniaturization of the converter station, the overall design and the pos...

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): G01R31/02G01R15/20G01R19/02G01R19/04
CPCG01R15/202G01R19/02G01R19/04G01R31/50
Inventor 范玉刚高阳吴建德王晓东黄国勇邹金慧冯早叶波
Owner KUNMING UNIV OF SCI & TECH
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