CN110706433A - Fault early warning method, fault early warning device and electric cabinet - Google Patents
Fault early warning method, fault early warning device and electric cabinet Download PDFInfo
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- CN110706433A CN110706433A CN201910984595.1A CN201910984595A CN110706433A CN 110706433 A CN110706433 A CN 110706433A CN 201910984595 A CN201910984595 A CN 201910984595A CN 110706433 A CN110706433 A CN 110706433A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 61
- 238000001514 detection method Methods 0.000 claims description 30
- 238000009529 body temperature measurement Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 230000007257 malfunction Effects 0.000 claims 1
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012905 input function Methods 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0003—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiant heat transfer of samples, e.g. emittance meter
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
Abstract
The invention discloses a fault early warning method, a fault early warning device and an electric cabinet, wherein the fault early warning method comprises the following steps: detecting the actual temperature of the heating member, judging whether the actual temperature exceeds a target temperature range, if so, giving an alarm, judging whether the heating member fails, and if not, correcting the target temperature range and removing the alarm. The invention has the capability of self-adjustment and environment adaptation, and the longer the running time of the electric cabinet in which the heating element is positioned is, the more accurate the judgment on whether the heating element has a fault or not through continuously correcting the target temperature range.
Description
Technical Field
The invention relates to the technical field of power utilization safety, in particular to a fault early warning method, a fault early warning device and an electric cabinet.
Background
Electric elements generally generate heat when working, and usually have faults when the heat of the electric elements exceeds a normal temperature range, so that a large number of schemes for judging and alarming according to the temperature of the electric elements appear in the prior art for ensuring the electricity utilization safety.
For example, the invention patent with publication number CN110021883A discloses a method for preventing a high-voltage switch cabinet from being burned, which is provided with a plurality of temperature monitoring units, a data processing unit and an alarm unit, wherein the data processing unit screens monitoring data of the temperature monitoring units, and the alarm unit is started to send an alarm signal after the screened monitoring data exceed standards.
Although the alarm mode can play a role in protecting the high-voltage switch cabinet, in practical application, the environment where the high-voltage switch cabinet is located cannot be constant, the fixed normal temperature range obviously cannot be applied to different occasions, and the conditions of false alarm and false alarm can continuously appear in the use process of the high-voltage switch cabinet, so that the energy of maintenance personnel is wasted, and the normal operation of the high-voltage switch cabinet is influenced.
Therefore, how to design a fault early warning method, a fault early warning device and an electric cabinet capable of correcting a temperature range is an urgent technical problem to be solved in the industry.
Disclosure of Invention
In order to overcome the defect of poor energy regulation capability of the conventional alarm mode, the invention provides a fault early warning method, a fault early warning device and an electric cabinet, which can correct a target temperature range according to the actual fault condition.
The invention adopts the technical scheme that the design fault early warning method comprises the following steps: detecting the actual temperature of the heating member, judging whether the actual temperature exceeds a target temperature range, if so, giving an alarm, judging whether the heating member fails, and if not, correcting the target temperature range and removing the alarm.
Preferably, the correction target temperature range includes: if the actual temperature is higher than the upper limit value of the target temperature range, setting the upper limit value of the target temperature range as the actual temperature; and/or setting the lower limit value of the target temperature range as the actual temperature if the actual temperature is lower than the lower limit value of the target temperature range.
Preferably, the target temperature range is obtained from a historical database, and temperature values of the plurality of heating elements in normal working states are recorded in the historical database; the upper limit value of the target temperature range is the maximum temperature value in the historical database; and/or the lower limit value of the target temperature range is the minimum temperature value in the historical database.
Preferably, if the actual temperature does not exceed the target temperature range, the actual temperature is stored in a historical database as a normal temperature value; and/or if the actual temperature exceeds the target temperature range and the heating element does not fail, storing the actual temperature as a normal temperature value in a historical database; and/or if the actual temperature exceeds the target temperature range and the heating element fails, storing the actual temperature as an abnormal temperature value in a historical database.
Preferably, whether the heat generating member is out of order is determined and confirmed by an operator.
The invention also provides a fault early warning device adopting the fault early warning method, which comprises the following steps: the temperature detection assembly is used for detecting the actual temperature of each heating element; the control module compares the actual temperature of the heating element with the corresponding target temperature range, gives an alarm when the actual temperature exceeds the target temperature range, corrects the target temperature range and releases the alarm when confirming that the heating element is not in fault.
Preferably, the temperature detection assembly includes: the number of the temperature detection pieces is the same as that of the heating pieces, and each heating piece is independently provided with one temperature detection piece.
Preferably, the temperature detection assembly further comprises: the temperature measuring module is connected with the temperature detecting part, and the signal conversion module is connected with the temperature measuring module; the temperature measurement module processes data collected by the temperature detection part into temperature detection signals, and the signal conversion module converts the temperature detection signals into actual temperatures which can be identified by the control module.
Preferably, the temperature detecting member is an infrared sensor.
Preferably, the fault warning device further comprises: and the storage module is connected with the control module, and a historical database which corresponds to the heating pieces one by one is arranged in the storage module.
Preferably, the control module is connected with an input module for inputting a non-fault signal by an operator, and corrects the target temperature range and releases the alarm when receiving the non-fault signal.
Preferably, the control module is connected with a display device, and the information of the heating member with the actual temperature exceeding the target temperature range is displayed through the display device.
The invention also provides an electric cabinet which comprises the fault early warning device.
Compared with the prior art, the invention not only sends out a conventional alarm but also increases the action of judging whether the heating element is a real fault after the actual temperature exceeds the target temperature range, and when the heating element is not in fault, the target temperature range is indicated to be wrong, and the alarm is removed after the target temperature range is corrected.
Drawings
The invention is described in detail below with reference to examples and figures, in which:
FIG. 1 is a schematic flow chart of a fault warning method according to the present invention;
FIG. 2 is a system diagram of the fault warning device of the present invention;
fig. 3 is a schematic structural diagram of an electric cabinet in the invention.
Detailed Description
As shown in FIG. 1, the fault early warning method provided by the invention comprises the following steps of detecting the actual temperature of a heating element, comparing the actual temperature C of the heating element with a target temperature range, judging whether the actual temperature C exceeds the target temperature range △ C, if the actual temperature C exceeds the target temperature range △ C, giving an alarm, judging whether the heating element is in fault, if not, correcting the target temperature range △ C and removing the alarm.
The above steps are described in detail below, before the fault early warning method initially operates, temperature changes of the heating element in a normal operating state are detected through a large number of experiments, detected normal temperature values are recorded, a historical database is established, and normal temperature values are obtained from the historical database to determine an initial value of a target temperature range △ C.
A specific manner of correcting the target temperature range △ C is to set the upper limit value of the target temperature range △ C as the actual temperature C if the actual temperature is higher than the upper limit value of the target temperature range △ C, and to set the lower limit value of the target temperature range △ C as the actual temperature C if the actual temperature is lower than the lower limit value of the target temperature range △ C.
In a preferred embodiment, whether the heating element is failed or not is determined by an operator, and more specifically, if the actual temperature C exceeds the target temperature range △ C, an alarm is sent to notify the operator, the operator arrives at the site to determine whether the heating element is failed or not, if the heating element is not failed, the target temperature range △ C is corrected and the alarm is removed, and if the heating element is failed, the heating element is repaired to remove the failure or replace a new heating element.
The actual temperature C is stored in a historical database in the operation process of the fault early warning method, more specifically, the actual temperature C of the heating element is compared with a target temperature range △ C, whether the actual temperature C exceeds the target temperature range △ C or not is judged, if the actual temperature C is in the target temperature range △ C, the actual temperature C is stored in the historical database as a normal temperature value, the actual temperature C of the heating element is continuously monitored, if the actual temperature C exceeds the target temperature range △ C and the heating element does not fail, the actual temperature C is stored in the historical database as a normal temperature value, the actual temperature of the heating element is continuously monitored, if the actual temperature C exceeds the target temperature range △ C and the heating element fails, the actual temperature C is stored in the historical database as an abnormal temperature value, and after the failure of the heating element is eliminated, the actual temperature of the heating element is continuously monitored.
As shown in fig. 2, the present invention further provides a fault early warning apparatus using the above fault early warning method, including: the temperature control device comprises at least one heating part, a temperature detection assembly for detecting the actual temperature of each heating part, and a control module connected with the temperature detection assembly. The temperature detection assembly includes: the quantity is the same with the temperature detection piece that generates heat, and every generates heat a temperature detection piece of all independent configuration, and temperature detection piece adopts infrared sensor, and infrared sensor's detection head is just to its the piece that generates heat that corresponds. The temperature detection assembly further comprises: temperature measurement module and signal conversion module, temperature measurement module are the temperature detect signal with the data processing that infrared sensor gathered, and signal conversion module converts the actual temperature that temperature detect signal conversion can supply control module discernment.
The control module compares the actual temperature C of the heating element with a corresponding target temperature range △ C, and gives an alarm when the actual temperature C exceeds the target temperature range △ C, and corrects the target temperature range △ C and releases the alarm when the heating element is determined to be out of order.
The fault early warning device further comprises: the number of the historical databases is the same as that of the heating pieces, the historical databases correspond to the heating pieces one to one, the control module stores the actual temperature C of the heating pieces into the corresponding historical databases, and the judgment that the actual temperature C is stored as a normal temperature value or an abnormal temperature value has been described in detail in the method, which is not repeated herein.
In a preferred embodiment, all the temperature detection parts are connected to one temperature measurement module, the temperature measurement module is connected with the control module through the signal conversion module, in order to facilitate the control module to identify the corresponding relation between the actual temperature C and the heating parts, each heating part is provided with a unique identification code, data collected by the temperature detection parts are bound with the identification codes of the corresponding heating parts and then sent to the temperature measurement module, and the identification codes are carried by the data transmitted and flowed among the temperature measurement module, the control module and the historical database.
The control module is connected with an input module used for inputting a non-fault signal by an operator, and the control module corrects a target temperature range and relieves an alarm when receiving the non-fault signal and is also connected with a display device which displays information of a heating piece with the actual temperature C exceeding the target temperature range △ C so that the operator can quickly position the heating piece which is possibly in fault, the fault removing time is shortened, the working efficiency is improved, preferably, the display device adopts a touch screen with an input function, and the display device and the input module are integrally arranged, so that the structure is simpler.
As shown in fig. 3, the invention further provides an electric cabinet 1, which comprises the above fault early warning device, wherein the heating element is a contactor 2, the temperature detection element is an infrared sensor 3, the electric cabinet 1 is also internally provided with an overcurrent breaker 4, the contactors 2 are all connected in series to the overcurrent breaker 4, and the overcurrent breaker 4 is automatically switched off when the current is too large. In the preferred embodiment, the number of contactors 2 is three.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (13)
1. A fault early warning method is characterized by comprising the following steps: detecting the actual temperature of the heating member, judging whether the actual temperature exceeds a target temperature range, if so, giving an alarm, judging whether the heating member fails, and if not, correcting the target temperature range and removing the alarm.
2. The fault early warning method as claimed in claim 1, wherein the correcting the target temperature range comprises:
if the actual temperature is higher than the upper limit value of the target temperature range, setting the upper limit value of the target temperature range as the actual temperature;
and/or setting the lower limit value of the target temperature range as the actual temperature if the actual temperature is lower than the lower limit value of the target temperature range.
3. The fault pre-warning method according to claim 1, wherein the target temperature range is obtained from a historical database, and normal temperature values of a plurality of heating elements in normal working states are recorded in the historical database;
the upper limit value of the target temperature range is the maximum normal temperature value in the historical database;
and/or the lower limit value of the target temperature range is the minimum normal temperature value in the historical database.
4. The fault pre-warning method according to claim 3, wherein if the actual temperature does not exceed a target temperature range, the actual temperature is stored in the historical database as a normal temperature value;
and/or if the actual temperature exceeds the target temperature range and the heating element does not fail, storing the actual temperature as a normal temperature value in the historical database;
and/or if the actual temperature exceeds the target temperature range and the heating element fails, storing the actual temperature as an abnormal temperature value in the historical database.
5. The fault warning method as claimed in claim 1, wherein whether the heat generating member is faulty or not is judged and confirmed by an operator.
6. A failure warning apparatus using the failure warning method according to any one of claims 1 to 5, comprising: the temperature detection device comprises at least one heating piece, a temperature detection assembly for detecting the actual temperature of each heating piece, and a control module connected with the temperature detection assembly;
the control module is characterized in that the control module compares the actual temperature of the heating member with a corresponding target temperature range, gives an alarm when the actual temperature exceeds the target temperature range, corrects the target temperature range and releases the alarm when confirming that the heating member is not in fault.
7. The fault warning device according to claim 6, wherein the temperature detection assembly includes: the number of the temperature detection pieces is the same as that of the heating pieces, and each heating piece is independently provided with one temperature detection piece.
8. The fault early warning device according to claim 7, wherein the temperature detection assembly further comprises: the temperature measuring module is connected with the temperature detecting piece, and the signal conversion module is connected with the temperature measuring module;
the temperature measurement module processes data collected by the temperature detection part into a temperature detection signal, and the signal conversion module converts the temperature detection signal into an actual temperature which can be identified by the control module.
9. The malfunction early warning device according to claim 7, wherein the temperature detection member employs an infrared sensor.
10. The fault early warning device according to claim 6, further comprising: and the storage module is connected with the control module and is internally provided with a historical database which corresponds to the heating pieces one by one.
11. The fault early warning device according to claim 6, wherein the control module is connected with an input module for an operator to input a non-fault signal, and the control module corrects the target temperature range and releases an alarm when receiving the non-fault signal.
12. The fault pre-warning device according to claim 6, wherein the control module is connected with a display device, and information of the heating member with the actual temperature exceeding the target temperature range is displayed through the display device.
13. An electric cabinet, comprising: a fault pre-warning device as claimed in any one of claims 6 to 12.
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| CN201910984595.1A CN110706433A (en) | 2019-10-16 | 2019-10-16 | Fault early warning method, fault early warning device and electric cabinet |
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| CN201910984595.1A CN110706433A (en) | 2019-10-16 | 2019-10-16 | Fault early warning method, fault early warning device and electric cabinet |
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Cited By (1)
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