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

Double-SFC (Static Frequency Converter) system topography structure

A topology structure and isolation switch technology, applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problems of insufficient site and short switching time for SFC system renovation projects, and achieve short switching time, cost reduction, and good practicability. Effect

Inactive Publication Date: 2014-10-29
STATE GRID XINYUAN +4
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] The purpose of the present invention is to propose a dual-SFC system topology structure, which can solve the problem of insufficient site for SFC system transformation projects, reduce the cost of adding a single set of SFC equipment by about 35%, shorten the switching time, and have good practicability. economy and reliability

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
  • Double-SFC (Static Frequency Converter) system topography structure
  • Double-SFC (Static Frequency Converter) system topography structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0045] Instructions attached figure 2 middle:

[0046] 1 - Input Breaker 1

[0047] 2 – Input Transformer

[0048] 3 – Isolation switch 1

[0049] 4-#1SFC DC Reactor

[0050] 5-#1SFC output switch 2

[0051] 6-#1SFC output switch 1

[0052] 7 – Isolation switch 2

[0053] 8 – Isolation switch 3

[0054] 9 – Output circuit breaker

[0055] 10 - Input Breaker 2

[0056] 11 – Isolation switch 4

[0057] 12 – #2SFC DC reactor

[0058] 13-#2SFC output switch 1

[0059] 14-#2SFC output switch 2

[0060] 15 – Isolation switch 5

[0061] 16 – Isolation switch 6

[0062] 17 – Output Transformer

[0063] The present invention provides a dual SFC system topology, comprising the following steps:

[0064] (1) 2 sets of SFC common input circuit breaker, input transformer, output transformer and output circuit breaker, see 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 double-SFC (Static Frequency Converter) system topography structure. The double-SFC system topography structure is characterized in that two sets of SFCs share equipment such as an input circuit breaker, an output circuit breaker, an input transformer and an output transformer; main-standby switching of two sets of SFC systems is realized through switching-closing operation of six isolating switches in a control system. By adopting the double-SFC system topography structure, the problem of insufficient SFC modification project place can be solved, the construction cost is saved, the system switching time is short, and very high practicability, economical efficiency and reliability are realized.

Description

technical field [0001] The invention belongs to the field of power electronics technology and topological structure, in particular to a double SFC system topological structure. Background technique [0002] Static Frequency Converter (SFC for short) is a starting device for synchronous motors. After the power frequency current is rectified and inverted, it outputs variable frequency current with variable frequency and amplitude, and drives the synchronous motor smoothly to Target speed to avoid impact on grid access point. The SFC system is usually used for the start-up of large-scale pumped storage units, large-scale gas turbine units and a few large-scale fans. [0003] SFC system belongs to AC-DC-AC converter, SFC system is generally composed of input circuit breaker, input transformer, rectifier valve group, DC reactor, inverter valve group, output knife switch, output transformer (if any), output circuit breaker and other equipment . At present, the two sets of SFC s...

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): H02J3/00
Inventor 梁少华高苏杰魏伟刘为群石祥建张雷雷秦俊
Owner STATE GRID XINYUAN