Unlock instant, AI-driven research and patent intelligence for your innovation.

Multi-terminal DC (Direct Current) system-based circuit breaker device

A technology of DC circuit breaker and multi-terminal DC, applied in the direction of power transmission AC network, etc., can solve the problem of large loss, and achieve the effect of reducing loss, improving transmission efficiency, and reducing the number of circuit breakers

Inactive Publication Date: 2015-02-18
PWM DRIVES
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of large losses caused by passing through at least two circuit breakers when electric energy flows between AC power grids, and provides a circuit breaker device based on a multi-terminal DC system

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
  • Multi-terminal DC (Direct Current) system-based circuit breaker device
  • Multi-terminal DC (Direct Current) system-based circuit breaker device
  • Multi-terminal DC (Direct Current) system-based circuit breaker device

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0033] Specific implementation mode one: the following combination image 3 and Figure 4 This embodiment is described. In the circuit breaker device based on the multi-terminal DC system described in this embodiment, any two DC output ends of the multi-terminal DC system are connected to each other through a circuit breaker.

specific Embodiment approach 2

[0034] Embodiment 2: This embodiment further describes Embodiment 1. In the circuit breaker device based on the multi-terminal DC system, all circuit breakers have the same or different power levels.

[0035] Circuit breaker power rating:

[0036] When designing a DC transmission system, it is necessary to determine the power level of each circuit breaker. The power level of a circuit breaker is determined by many factors, including the magnitude and direction of power flow, power generation mode, converter station technology, and fault protection. For the circuit breaker structure of the present invention, the power level of each circuit breaker may be the same or different.

specific Embodiment approach 3

[0037] Specific implementation mode three: the following combination image 3 Describe this embodiment mode. This embodiment mode further explains Embodiment 1 or 2. The circuit breaker device based on the multi-terminal DC system in this embodiment mode is connected to the DC connection point of the three-terminal DC transmission system, and it includes a No. 1 circuit breaker 1, No. 2 circuit breaker 2 and No. 3 circuit breaker 3,

[0038] The No. 1 circuit breaker 1 is connected between the two DC output terminals a and b of the three-terminal DC transmission system, the No. 2 circuit breaker 2 is connected between the two DC output terminals b and c of the three-terminal DC transmission system, and the No. 3 circuit breaker The circuit breaker 3 is connected between the two DC output ends a and c of the three-terminal DC power transmission system.

[0039] The three DC output terminals of the three-terminal DC transmission system described in this embodiment are connected...

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 relates to a multi-terminal DC (Direct Current) system-based circuit breaker device, and belongs to the technical field of energy transmission and distribution in order to solve the problem that electric energy at least passes two circuit breakers when flows between AC (Alternating Current) power grids, resulting in high loss. The first scheme is as follows: any two DC output terminals of the multi-terminal DC system are mutually connected by a circuit breaker; the second scheme is as follows: in all DC output terminals of the multi-terminal DC system, partial DC output terminals are in a mutual disconnected state, and any other two DC output terminals are mutually connected by a circuit breaker. The multi-terminal DC system-based circuit breaker device provided by the invention is used for connecting multi-terminal DC systems.

Description

technical field [0001] The invention relates to a circuit breaker device based on a multi-terminal direct current system, and belongs to the technical field of energy transmission and distribution. Background technique [0002] In recent years, DC power transmission and distribution technology has been widely developed, which is especially suitable for the transmission and distribution of renewable energy such as wind energy and solar energy. For onshore systems, it is more appropriate to use DC distribution transmission when the transmission distance is several hundred kilometers; for offshore systems, it is suitable to use DC distribution transmission when the transmission distance is greater than tens of kilometers. [0003] The connection mode of the circuit breaker in the DC power transmission and distribution system effectively protects the multi-terminal DC system. Multi-terminal refers to the presence of more than two interconnected DC terminals at certain connectio...

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
CPCY02E60/60H02J3/36
Inventor 威廉姆斯·巴里·韦恩弗莱彻·约翰·爱德华
Owner PWM DRIVES