Unidirectional transformation type high-voltage DC circuit break device and fault removing method

A high-voltage direct current and circuit-breaking device technology is applied in emergency protection circuit devices, output power conversion devices, and direct-current power input conversion to direct-current power output. device, etc.

Inactive Publication Date: 2017-03-08
CHENGDU POWER SUPPLY COMPANY OF STATE GRID SICHUAN ELECTRIC POWER +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a unidirectional transformer-type high-voltage DC circuit breaker and a fault removal method, which solves the technical problem that the existing circuit breaker cannot realize the functions of a DC step-up transformer and a high-voltage DC circuit breaker at the same time, and realizes the high-voltage DC circuit breaker. The technical effect that the circuit breaker can realize the functions of DC step-up transformer and high-voltage DC circuit breaker at the same time

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
  • Unidirectional transformation type high-voltage DC circuit break device and fault removing method
  • Unidirectional transformation type high-voltage DC circuit break device and fault removing method
  • Unidirectional transformation type high-voltage DC circuit break device and fault removing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] In Example 1, please refer to figure 1 , provides a unidirectional transformer-type high-voltage DC circuit breaker based on a Boost converter, including a circuit breaker and a control system, wherein the circuit breaker includes an inductor L connected to the positive input terminal, and the output terminal of the inductor L is connected to the IGBT switch module group S 1 Anode connected, IGBT switch module group S 1 anode simultaneously with the diode module group D 1 Anode connection of the diode module group D 1 The cathode is connected to the positive output terminal, the IGBT switch module group S 1 The cathode, the negative input terminal, and the negative output terminal are grounded at the same time, and an input capacitor C is connected between the positive input terminal and the negative input terminal. i , an output capacitor C is connected between the positive output terminal and the negative output terminal o , the specific topology is as figure 2 ...

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 unidirectional transformation type high-voltage DC circuit break device and a fault removing method. The device comprise a circuit breaker and a control system, the control system comprises an inner-loop adjusting control current and an outer-loop adjusting control voltage, and an auxiliary controller is added to double-closed-loop adjustment to realize transformation and protection control of the high-voltage DC circuit breaker. Compared with a traditional high-voltage circuit breaker, the device has the advantages of more functions, high ON / OFF speed and reduced cost, a boosting transformer function of the circuit breaker is realized when a high-voltage DC power transmission system runs normally, and the device can be applied to power lines of different voltage levels flexibly; and a short-circuit fault can be removed effectively and rapidly when the short circuit fault occurs in the power transmission line, and high-voltage DC power transmission equipment and load equipment are protected.

Description

technical field [0001] The invention relates to the research field of transmission line protection devices, in particular to a boost converter-based unidirectional transformer-type high-voltage direct current circuit breaker and a method for removing short-circuit faults of the transformer-type high-voltage direct current circuit breaker. Background technique [0002] In the high-voltage AC transmission system, the normal input and accidental disconnection of the transmission line are realized through the high-voltage AC circuit breaker. In the high-voltage direct current transmission system, the control of the converter valve control (gate) is used to eliminate temporary faults or when a short-circuit fault occurs, a mechanical high-voltage circuit breaker is used to cut it off. However, with the development of VSC-HVDC power transmission technology Due to the long response time of mechanical high-voltage DC circuit breakers, it is difficult to meet the needs of rapid remov...

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 Applications(China)
IPC IPC(8): H02H7/26H02M3/158
CPCH02H7/26H02M3/1582
Inventor 唐良义杨坤王坤林俊洁向路先李红柳崔开源余杰张璞
Owner CHENGDU POWER SUPPLY COMPANY OF STATE GRID SICHUAN ELECTRIC POWER
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