System and method for monitoring high-voltage direct-current circuit breaker

A high-voltage direct current, monitoring system technology, applied in circuit devices, electrical components, etc., can solve the problems of high-voltage direct current circuit breaker failure, inability to monitor the status and information of the circuit breaker, and inability to obtain fault information, so as to achieve clear responsibility and facilitate analysis. Clear effect with repair and division of labor

Active Publication Date: 2019-10-22
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current high-voltage DC circuit breaker monitoring system cannot monitor the status and information of the circuit breaker, and cannot obtain fault information in the fault state, causing the high-voltage DC circuit breaker to fail, and the problem cannot be found in time

Method used

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  • System and method for monitoring high-voltage direct-current circuit breaker

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The wiring diagram of the overall structure of the high-voltage DC circuit breaker monitoring system provided by the present invention is as follows: figure 1 As shown, it includes the upper computer PC equipment and the lower computer monitoring equipment chassis connected by the switch; the lower computer monitoring equipment chassis includes the circuit breaker monitoring system A chassis and the circuit breaker monitoring system B chassis; the circuit breaker monitoring system A chassis and the circuit breaker The chassis of the monitoring system B is connected through a valve control unit; the chassis of the circuit breaker monitoring system A and the chassis of the circuit breaker monitoring system B both receive GPS for time synchronization, and all information generated by the circuit breaker monitoring system uses the GPS clock as a standard clock source.

[0058] The high-voltage DC circuit breaker includes sub-modules, valve control units, mechanical switches,...

Embodiment 2

[0065] The present invention also provides a monitoring method using a monitoring system for a high-voltage direct current circuit breaker, comprising the following steps:

[0066] (1) The monitoring system receives the state information bits and sub-module state information bits from the control protection unit, mechanical switch, valve control unit, and OCT of the high-voltage DC circuit breaker, and will control the state of the protection unit, mechanical switch, valve control unit, and OCT The information bits and sub-module status information bits are marked with time stamps for buffering.

[0067] (2) The status information bits in step (1) are compared with the status information bits received last time in order to check the displacement situation. If the status information bits are changed, the corresponding event will be generated, marked with time, and entered into the event The buffer is waiting to be sent, and the new information status bit is stored and recorded;...

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Abstract

The invention relates to a system and method for monitoring a high-voltage direct-current circuit breaker. The system comprises an upper computer PC device and a lower computer monitoring device, thelower computer monitoring device comprises at least one breaker monitoring unit; each breaker monitoring unit is used for receiving analog quantity information and state information bits of the high-voltage direct-current breaker, generating corresponding SOE event information by the state information bits according to the displacement condition, marking the analog quantity information and the SOEevent information, storing the analog quantity information and the SOE event information into an event buffer area to wait for sending, taking the analog quantity information as remote measurement, and taking the state information bits as the remote communication quantity to be sent to the upper computer PC device through a standard Ethernet interface for displaying; and the upper computer PC device is used for checking the analog quantity information to be sent and the state of the SOE event buffer area, and sending the analog quantity information and the SOE event information with the timemarks according to the sequence of entering the storage area. The system and method can monitor the state and information of the circuit breaker in real time, timely and accurately acquire the fault information in the fault state, and analyze and repair the fault mechanism.

Description

technical field [0001] The invention relates to the monitoring technology of a direct current circuit breaker, in particular to a monitoring system and a monitoring method for a high voltage direct current circuit breaker. Background technique [0002] High-voltage DC circuit breakers ensure the reliability, flexibility and continuity of multi-terminal high-voltage direct current transmission. As the core and key equipment of high-voltage direct current transmission, the information of high-voltage direct current circuit breakers needs to be monitored in real time. Accurately obtaining the operating status information of the circuit breaker and the fault information in the fault state are the requirements of the system for the protection device. The feasibility and reliability of the HVDC circuit breaker monitoring system are very important. design plan. [0003] The current high-voltage DC circuit breaker monitoring system cannot monitor the state and information of the ci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
CPCH02J13/0003
Inventor 孔德煜贺之渊赵岩高阳杨兵建
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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