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

Switching method of medium pressure tsc valve group intelligent control system

A technology of intelligent control system and valve group, applied in flexible AC power transmission system, reactive power adjustment/elimination/compensation and other directions, can solve the problems of inability to remove capacitors in time, equipment can not operate normally, thyristor work heating and other problems, and achieve a simple structure. , easy to check and repair, accurate switching effect

Active Publication Date: 2018-01-30
黑龙江特通电气股份有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention aims to solve the problem that the thyristor in the existing medium and high voltage TSC equipment works for a long time and heats up, the capacitor cannot be removed in time after a fault occurs during operation, and the equipment cannot operate normally when the power capacitor decays, thus affecting the use of users

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
  • Switching method of medium pressure tsc valve group intelligent control system
  • Switching method of medium pressure tsc valve group intelligent control system

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0031] Specific implementation mode one: see figure 1 and figure 2 Describe this embodiment, the switching method of the medium-voltage TSC valve group intelligent control system described in this embodiment, the medium-voltage TSC valve group intelligent control system includes a first vacuum contactor 1, a voltage transformer 2, a three-phase Reactor 3, three-phase high-voltage discharge coil 4, three-phase high-voltage capacitor 5, three-phase current transformer 6, second vacuum contactor 7, three-phase thyristor valve group 8, three-phase trigger module 9, three-phase high-frequency constant current source 10 and central processing unit 11;

[0032] The three-phase power supply is sequentially connected in series with the normally open main contact of the first vacuum contactor 1, the three-phase reactor 3, the three-phase high-voltage capacitor 5 and the three-phase thyristor valve group 8;

[0033] Three-phase high-voltage capacitor 5 two ends are connected in parall...

specific Embodiment approach 2

[0059] Specific implementation mode two: see figure 1 This embodiment is described. The difference between this embodiment and the switching method of the medium-pressure TSC valve group intelligent control system described in Embodiment 1 is that the output frequency of the three-phase high-frequency constant current source 10 is above 20KHz.

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

A thyristor valve group switching method realized by a medium-voltage TSC valve group intelligent control system belongs to the technical field of medium- and high-voltage distribution dynamic voltage compensation and reactive compensation. Problems, for example, the thyristor in the existing medium- and high-voltage TSC equipment becomes hot after long-time work, a capacitor cannot be switched off in a timely manner after failing in the running process, and the equipment cannot run normally when a power capacitor is attenuated and thus the user experience is affected, are solved. The method comprises a switching-on action and a switching-off action. A voltage transformer is used for detecting voltage signals between any two phases of the three- phase power output by a high-voltage grid. A central processing unit detects three-phase voltage and current signals on a power supply line. A three-phase current transformer is arranged between a three-phase high-voltage discharge coil and a three-phase thyristor valve group. A valve group switching instruction of the central processing unit is connected with the control ends of all the thyristors in the three-phase thyristor valve group through a three-phase high-frequency constant current source. The method is used to reactively compensate an inductive load.

Description

technical field [0001] The invention belongs to the technical field of dynamic voltage compensation and reactive power compensation for medium and high voltage power distribution. Background technique [0002] In the field of medium and high voltage reactive power compensation, HVC equipment has the advantages of simple structure and low price, but because it uses a purely mechanical switch switching capacitor bank for compensation, it is impossible to accurately control the switching time, resulting in a large switching inrush current , will have a great impact on the grid and capacitors, and the most critical thing is that the mechanical switch contacts have a more obvious arc effect, so the service life of switching is greatly limited. [0003] TSC-type reactive power compensation equipment is more and more used in the market. The core switching device is a semi-controlled thyristor device. Since the thyristor is a semiconductor switch, there is no obvious switching arc p...

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 Patents(China)
IPC IPC(8): H02J3/18
CPCH02J3/18Y02E40/10
Inventor 李国勇
Owner 黑龙江特通电气股份有限公司