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

A monitoring control device and system for simulating commutation failure test

A technology of monitoring control and commutation failure, which is applied in the field of power system, can solve the problems of easy crash, difficult maintenance, high price, etc., and achieve the effect of easy maintenance, low price, and easy crash

Active Publication Date: 2022-06-24
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +1
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the disadvantages of digital simulation system RTDS and RTLAB equipment in the prior art relying on microcomputer control, easy to crash during software operation, high price, and difficult maintenance, thereby providing a digital simulation system. Monitoring and control device and system for phase failure test

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
  • A monitoring control device and system for simulating commutation failure test
  • A monitoring control device and system for simulating commutation failure test
  • A monitoring control device and system for simulating commutation failure test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The embodiment of the present invention provides a monitoring and control device for simulating a commutation failure test, which is applied to a physical test system for simulating a commutation failure of a DC transmission valve. The circuit under test in the embodiment of the present invention can be a 12-pulse back-to-back physical test The rectifier side and the inverter side of the physical test device respectively include 12 thyristors, and the monitoring and control device communicates with the 24 thyristors of the 12-pulse back-to-back physical test device through 12 pairs of optical fibers, such as figure 1 As shown, the monitoring and control device includes: a backplane 10, a communication board 12, a main control board 13, a GPS synchronization board 14 and at least one trigger monitoring board, a communication board 12, a main control board 13, a GPS synchronization board 14 and at least one trigger The monitoring boards are all disposed on the backplane 10...

Embodiment 2

[0055] The embodiment of the present invention provides a monitoring and control system for simulating a commutation failure test, such as image 3 As shown, it includes a host computer 33, an AD data collection box 34, a switch input box 35, a switch output box 36, and the monitoring and control device 32 in the above embodiment for simulating a commutation failure test.

[0056] The AD data collection box 34 is respectively connected with the monitoring control device 32 and the circuit under test 31 , and is used for collecting electrical data of the circuit under test 31 and transmitting the electrical data to the monitoring control device 32 .

[0057] Exemplarily, the electrical data may include, but are not limited to, the voltage, current, voltage change rate, current change rate, etc. of the thyristor, which belong to continuously changing analog data. The AD data collection box 34 performs analog-to-digital conversion on the collected analog electrical data. , and th...

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 monitoring control device and system for simulating a commutation failure test. The device includes: a backboard, a communication board, a main control board, a GPS synchronization board and at least one trigger monitoring board, a communication board, and a main control board , GPS synchronization board and trigger monitoring board are set on the back board, GPS synchronization board is used to receive GPS signal, generate clock signal according to GPS signal, and transmit clock signal to communication board, main control board, GPS synchronization board and trigger monitoring board; the main control board is used to obtain the operating parameter data of the circuit under test through the communication board, generate a trigger signal according to the analysis of the operating parameter data, and send the trigger signal to the trigger monitoring board; the trigger monitoring board is used to send the circuit under test Sending a pulse trigger signal, and receiving a monitoring signal fed back from the circuit under test, and sending the monitoring signal to the main control board. The device provided by the invention does not rely on microcomputer control, which solves the problem of easy crash during operation, and the device is cheap and easy to maintain.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a monitoring and control device and system for simulating a commutation failure test. Background technique [0002] With the increasing number of DC transmission projects put into operation in China, the problem of commutation failure in inverter stations has become prominent. The root cause of commutation failure is the semi-controlled characteristics of thyristor components. The opening of thyristors can be controlled by trigger pulses, but it must be A reverse voltage is applied for a period of time to de-dissociate the carriers in the thyristor and restore the blocking ability, so that it can be turned off reliably. If the time of applying the reverse voltage is too short, once the thyristor is subjected to the forward voltage, it will turn on again without the need for a trigger pulse. The commutation failure will cause the DC bias of the converter transformer, the overheating ...

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): G01R31/00G05B17/02
CPCG01R31/00G05B17/02
Inventor 郑林刘近吴文祥宋林伟张迪王雅洁刘盼盼唐志军
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD