Method for monitoring light trigger pulse of power electronic device

A power electronic device, pulse monitoring technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of difficult to meet requirements, slow speed, etc.

Inactive Publication Date: 2009-05-20
CHINA XD ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] At present, most pulse monitoring methods are level monitoring, that is, monitoring whether the pulse level changes, not whether there is a jump e

Method used

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  • Method for monitoring light trigger pulse of power electronic device
  • Method for monitoring light trigger pulse of power electronic device

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Experimental program
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Embodiment Construction

[0025] The present invention is described in further detail below in conjunction with accompanying drawing:

[0026] see figure 1 , is a schematic block diagram of the data transmission relationship between the functional modules of the present invention. The pulse monitoring module monitors the arrival of the pulse in real time, and continuously transmits the monitoring information to the frequency measurement module. If the pulse monitoring module captures the pulse, the frequency measurement module will Judging the width of the pulse and the number of pulses in the power frequency cycle through the pulse information monitored by the pulse monitoring module and sending these information to the cycle judgment module, if the cycle judgment module has received the pulse information of the first 5 cycles before, then The period judgment module will compare the pulse information received this time with the monitoring results of the previous periods, and record the number of pulse...

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Abstract

The invention discloses a method for monitoring light triggered pulse of a power electronic device. The device comprises a pulse monitoring module, a frequency measuring module, a cycle judging module, a pulse information conditioning module, a pulse comparing module and a human-computer interface; and the method comprises the following steps: the pulse monitoring module monitors the advent of pulse in real time and transmits information to the frequency measuring module; through judging the width of the pulse and the number of the pulse in a cycle, the frequency measuring module transmits information to the cycle judging module; the cycle judging module transmits the information to the pulse information conditioning module; through sorting, the pulse information conditioning module transmits the information to the pulse comparing module; and the pulse information is compared. The pulse monitoring method is based on a programmable logic device, can monitor an optical signal of a monitoring control unit, identify the length of a pulse cycle, the pulse width, the number of the pulse in the cycle and the like, set the theoretical situation of the input pulse through the human-computer interface and compare the monitored pulse with the standard pulse; and if the pulse is abnormal, the human-computer interface alarms in time and makes corresponding processing.

Description

technical field [0001] The invention belongs to the field of electrical monitoring, and relates to a pulse monitoring method, in particular to a monitoring method for light-triggered pulses of power electronic devices. Background technique [0002] With the rapid development of power electronics technology, the use of pulse monitoring in power systems is becoming more and more extensive. Such technologies are widely used in the field of flexible power transmission, and will also be widely used in optical fiber transmission in digital substations in the future. [0003] The power frequency pulse of the power system is a standard 50Hz pulse, and the trigger pulse is a periodic signal. There are single pulse and multiple pulses in one cycle. The trigger pulse must conform to a fixed format and strict time regulation. Therefore, it is necessary to monitor whether the pulse meets certain requirements, and if not, the corresponding conversion output will not be performed, and an...

Claims

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Application Information

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IPC IPC(8): G01R29/027
Inventor 张杭严结实郭代正崔葛安张爱民
Owner CHINA XD ELECTRIC CO LTD
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