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A trip recovery alarm method and device based on signal correlation analysis

A technology of correlation analysis and signal, applied in the direction of automatic disconnection of emergency protection devices, circuit devices, emergency protection circuit devices, etc., can solve the problem of inability to actively pay attention to tripping and automatic closing and whether the fault is restored, the distraction of dispatchers, Difficulty paying attention to alarm information and other issues

Active Publication Date: 2021-09-10
NARI TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] ①According to the existing independent event handling mechanism, when there is a lot of alarm information or the accumulation of historical alarms on the human-computer interface (alarm display window), the attention of the dispatcher will be distracted, and it is difficult to pay attention to important alarm information (such as accident tripping );
[0009] ②The independent event alarm information only gives an alarm for the current state, and cannot actively pay attention to whether the switch is automatically closed within a period of time after the trip and whether the fault is recovered

Method used

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  • A trip recovery alarm method and device based on signal correlation analysis
  • A trip recovery alarm method and device based on signal correlation analysis
  • A trip recovery alarm method and device based on signal correlation analysis

Examples

Experimental program
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Embodiment 1

[0054] This embodiment is a method for trip recovery alarm based on signal correlation analysis, including:

[0055] Receive equipment switch displacement signals and associated protection action signals;

[0056] In response to receiving the equipment switch displacement signal, determine the event type of the equipment switch displacement signal, and record the corresponding tripping event, re-tripping event after closing or closing event after tripping into the preset buffer queue, and at the same time Record the corresponding device switch position status;

[0057] In response to receiving a protection action signal, record corresponding protection action information into the cache queue;

[0058] Use the event sliding window with a preset time length to mark the current period of events and protection action information in the buffer queue, and use the event that overflows the event sliding window over time as a timeout event;

[0059] In response to a new event and cor...

Embodiment 1-1

[0078] This embodiment specifically describes the method described in Embodiment 1, which mainly includes two parts: event signal trigger processing and event signal sliding window (life cycle) processing.

[0079] About Event Sliding Window

[0080] refer to figure 2 As shown, when there are event signals (tripping, closing, etc.) or protection action signals input, the buffer queue will buffer the event signals or protection action signals in chronological order;

[0081] The sliding window is a container with a fixed time length, which can store the index of the corresponding event signal in chronological order, and move forward on the time axis as time goes by. At the same time, some event signals will overflow the event sliding window and become a timeout event. At this time Will trigger event timeout processing.

[0082] Event signal trigger processing flow

[0083] refer to image 3 As shown, the status change of the device switch position or the protection signal ...

Embodiment 2

[0108] This embodiment is a trip recovery alarm device based on signal correlation analysis, including:

[0109] The signal receiving module is configured to receive the device switch displacement signal and the associated protection action signal;

[0110] The event recording module is configured to determine the event type of the equipment switch displacement signal in response to receiving the equipment switch displacement signal, and record the corresponding tripping event, re-tripping event after closing or closing event after tripping Enter the preset cache queue, and record the corresponding device switch position status at the same time;

[0111] A protection action recording module configured to record corresponding protection action information into the cache queue in response to receiving a protection action signal;

[0112]The cache queue update module is configured to use the event sliding window of a preset time length to mark the current period of events and pr...

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PUM

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Abstract

The invention discloses a method and device for trip recovery alarm based on signal correlation analysis. The method includes: receiving the equipment switch displacement signal and the associated protection action signal; judging the event type of the equipment switch displacement signal; The action signal is recorded in the cache queue; the event sliding window is used to mark the current period of events and protection action information in the cache queue, and the event that overflows the event sliding window over time is regarded as a timeout event; when a new event is recorded, the online status of the corresponding device switch is discarded. If there is no timeout event, if there is an event timeout, according to the type of event and the protection action information in the current period, determine the current equipment switch status as the state of reclosing failure, reclosing failure or reclosing success, and output an alarm signal. The invention can identify the reclosing event after the trip and the subsequent trip again in real time, and can report the accident alarm separately, so as to improve the degree of attention of dispatchers to the accident trip alarm.

Description

technical field [0001] The invention relates to the technical field of power system alarm analysis, in particular to a method and device for trip recovery alarm based on signal correlation analysis. Background technique [0002] in modern power systems. When the switch (circuit breaker) trips, a device signal will be generated. If it trips in an accident, it will be accompanied by an action protection signal, which is called a protection signal action. After tripping, reclosing will also generate a protection signal for reclosing. For the alarms in the current power system, when the equipment status changes or the protection signal action occurs, the alarm will be reported. [0003] In order to monitor the tripping and closing events in the power system, the traditional monitoring method will report to the alarm system after receiving the tripping or closing signal. The process is as follows figure 1 ,include: [0004] ① The front-end signal acquisition system receives t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/07
CPCH02H3/07
Inventor 管钒均马洁郭耀松王瑞盛振明孙世明杨哲
Owner NARI TECH CO LTD