CN110687251A - Control cabinet and humidity early warning method and device thereof - Google Patents
Control cabinet and humidity early warning method and device thereof Download PDFInfo
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Abstract
The invention relates to a control cabinet and a humidity early warning method and device thereof, wherein the humidity early warning method of the control cabinet comprises the steps of obtaining a first humidity change rate in a preset humidity range, wherein the first humidity change rate is the change rate of the internal humidity of the control cabinet; detecting whether the first rate of humidity change is greater than or equal to zero; and when the first humidity change rate is larger than or equal to zero, sending an early warning signal to a monitoring system. Humidity in the switch board is in predetermineeing the humidity range, and first humidity rate of change is greater than or equal to zero, shows that humidity in the switch board increases and has the trend of forward growth, shows promptly that humidity in the switch board has the trend that surpasss predetermined humidity range, sends early warning signal to monitored control system this moment, is convenient for play the effect of early warning in advance to equipment operation potential safety hazard.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a control cabinet and a humidity early warning method and device thereof.
Background
Due to the progress of science and technology and the limitation of human resources, more and more transformer substations adopt an unattended operation management mode. Many electrical devices need to operate under specific environmental conditions, for example, the Humidity of the electrical devices in the control cabinet for the working operation environment is controlled to be about 45% -55% RH (Relative Humidity) which is most suitable. When the ambient humidity in the control cabinet exceeds 65% RH or higher, the humid air may cause various degrees of damage to the electrical equipment in the control cabinet, affecting its normal operation and safety. When the high-voltage electrical equipment is operated in an environment with humidity over 70% RH for a long time, moisture is continuously absorbed on the surface of the solid insulator and a water film is formed, ions contained in the water move along the surface of the insulator in an electric field and are accumulated near the electrode, so that the local electric field intensity is increased, electric discharge occurs, and the risk of reducing the flashover voltage along the surface is caused.
In order to protect the operating environment humidity of the electrical equipment in the control cabinet from exceeding the standard, the traditional monitoring system monitors the internal humidity of the control cabinet, but the traditional monitoring system only gives an alarm when the humidity in the control cabinet exceeds 65% RH, and cannot give out early warning before reaching the limit value, namely cannot play the effect of early warning on the potential safety hazard of equipment operation.
Disclosure of Invention
Therefore, the control cabinet, the humidity early warning method and the humidity early warning device have the advantages that the steps are simple, and early warning is given to potential safety hazards of equipment operation.
A control cabinet humidity early warning method comprises the following steps: acquiring a first humidity change rate within a preset humidity range, wherein the first humidity change rate is the change rate of the internal humidity of the control cabinet; detecting whether the first rate of humidity change is greater than or equal to zero; and when the first humidity change rate is larger than or equal to zero, sending an early warning signal to a monitoring system.
In one embodiment, before the detecting whether the first humidity change rate is greater than or equal to zero, the method further comprises: acquiring a second humidity change rate, wherein the second humidity change rate is the change rate of the external humidity of the control cabinet; when the first humidity change rate is greater than or equal to zero, sending an early warning signal to a monitoring system comprises: detecting whether the first rate of change of humidity is less than the second rate of change of humidity when the first rate of change of humidity is greater than or equal to zero; and when the first humidity change rate is smaller than the second humidity change rate, sending a first early warning signal to a monitoring system.
In one embodiment, said detecting whether said first humidity rate of change is less than said second humidity rate of change further comprises: and when the first humidity change rate is greater than or equal to the second humidity change rate, sending a second early warning signal to a monitoring system.
In one embodiment, the detecting whether the first humidity change rate is greater than or equal to zero further comprises: detecting whether the first humidity rate of change is less than or equal to the second humidity rate of change when the first humidity rate of change is less than zero; and when the first humidity change rate is smaller than or equal to the second humidity change rate, sending a normal operation signal to a monitoring system.
In one embodiment, said detecting whether said first humidity rate of change is less than or equal to said second humidity rate of change further comprises: and when the first humidity change rate is greater than the second humidity change rate, sending a third early warning signal to a monitoring system.
In one embodiment, the obtaining the first humidity change rate includes: sequentially acquiring a plurality of first humidity values according to a time sequence; and acquiring a first humidity change rate according to a plurality of first humidity values.
In one embodiment, before obtaining the first humidity change rate according to the plurality of first humidity values, the method further includes: detecting whether the first humidity value is larger than a first preset humidity value or not; and returning to the previous step when the first humidity value is less than or equal to the first preset humidity value.
In one embodiment, the detecting whether the first humidity value is greater than a first preset humidity value further includes: when the first humidity value is larger than the first preset humidity value, detecting whether the first humidity value is larger than a second preset humidity value; and when the first humidity value is larger than the second preset humidity value, sending an alarm signal to a monitoring system.
A control cabinet humidity early warning device comprises: the monitoring system comprises a first sensor, a second sensor and a processing module, wherein the first sensor and the second sensor are respectively connected with the input end of the processing module, and the output end of the processing module is used for being connected with a monitoring system; the first sensor is used for acquiring the internal humidity of the control cabinet; the second sensor is used for acquiring the external humidity of the control cabinet; the processing module is used for acquiring a first humidity change rate within a preset humidity range, wherein the first humidity change rate is the change rate of the internal humidity of the control cabinet; the processing module is further configured to detect whether the first rate of humidity change is greater than or equal to zero; the processing module is further used for sending an early warning signal to a monitoring system when the first humidity change rate is larger than or equal to zero.
The utility model provides a control cabinet, include the cabinet body and control cabinet humidity early warning device, processing module with first sensor set up respectively in the cabinet is internal, the second sensor set up in the cabinet is external, the through-hole has been seted up on the cabinet body, the second sensor through a communication line with processing module's input is connected, the communication line is worn to locate in the through-hole, processing module's output is used for being connected with monitored control system.
In the control cabinet and the humidity early warning method and device thereof, the humidity in the control cabinet is within a preset humidity range, the first humidity change rate is larger than or equal to zero, and the fact that the humidity in the control cabinet increases in a forward direction is indicated, namely that the humidity in the control cabinet has a trend exceeding the preset humidity range is indicated, and at the moment, an early warning signal is sent to a monitoring system, so that the early warning effect on the potential safety hazard of equipment operation is facilitated.
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FIG. 1 is a flowchart of a control cabinet humidity warning method according to an embodiment;
fig. 2 is a schematic structural diagram of a humidity warning device of a control cabinet according to an embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention relates to a control cabinet humidity early warning method. For example, the control cabinet humidity early warning method includes: acquiring a first humidity change rate within a preset humidity range, wherein the first humidity change rate is the change rate of the internal humidity of the control cabinet; detecting whether the first rate of humidity change is greater than or equal to zero; and when the first humidity change rate is larger than or equal to zero, sending an early warning signal to a monitoring system. In the control cabinet humidity early warning method, the humidity in the control cabinet is within a preset humidity range, the first humidity change rate is larger than or equal to zero, the fact that the humidity in the control cabinet increases and has a forward increasing trend is shown, namely, the fact that the humidity in the control cabinet has a trend exceeding the preset humidity range is shown, at the moment, an early warning signal is sent to a monitoring system, and the early warning effect on the potential safety hazard of equipment operation is facilitated.
Please refer to fig. 1, which is a flowchart illustrating a humidity warning method for a control cabinet according to an embodiment of the present invention.
A control cabinet humidity early warning method comprises the following steps of partially or completely.
S100: and acquiring a first humidity change rate within a preset humidity range, wherein the first humidity change rate is the change rate of the internal humidity of the control cabinet.
In this embodiment, the first humidity change rate is a change rule of the internal humidity of the control cabinet, that is, the first humidity change rate is a change trend of the internal humidity of the control cabinet, that is, the first humidity change rate reflects an increase or decrease trend of the internal humidity of the control cabinet. The minimum humidity of the preset humidity range is the humidity corresponding to the dehumidification equipment in the control cabinet when the dehumidification equipment is started, and the maximum humidity of the preset humidity range is the maximum humidity allowed by the equipment operation environment in the control cabinet. First humidity change rate is in for the inside humidity of switch board the trend of change in the predetermined humidity range, the size of first humidity change rate influences the increase trend of the inside humidity of switch board, promptly the size of first humidity change rate has decided that the inside humidity of switch board is positive growth or negative growth, also promptly the size of first humidity change rate has decided that the inside humidity of switch board has the increase trend or the trend that reduces, send early warning signal when being convenient for follow-up inside humidity to the switch board has the increase trend.
S200: detecting whether the first humidity change rate is greater than or equal to zero.
In this embodiment, the first humidity change rate has two conditions, namely, the first humidity change rate is either smaller than zero or greater than or equal to zero, and the two conditions of the first humidity change rate respectively correspond to the decrease and the increase of the internal humidity of the control cabinet, namely, the first humidity change rate is smaller than zero, which indicates that the internal humidity of the control cabinet has a trend of decreasing; the first humidity change rate is greater than or equal to zero, indicating that the internal humidity of the control cabinet has a tendency to increase. Through detecting the inside humidity change condition of switch board can be confirmed to the size of first humidity change rate, makes corresponding operation according to the result of judgement to be convenient for follow-up be in under the condition that first humidity change rate has the increase trend, send out early warning signal, and then reduce the potential safety hazard of the equipment operation in the switch board, realize the technological effect of early warning in advance, the monitoring personnel of being convenient for formulate corresponding solution.
S300: and when the first humidity change rate is larger than or equal to zero, sending an early warning signal to a monitoring system.
In this embodiment, the first humidity change rate is greater than or equal to zero, which indicates that the internal humidity of the control cabinet is in a continuously increasing state, i.e., that the internal humidity of the control cabinet has a tendency to increase, i.e., that the internal humidity of the control cabinet will continuously increase. And the inside humidity of switch board is in predetermine humidity range, along with the continuous increase of the inside humidity of switch board, the inside humidity of switch board is about to surpass predetermine the scope at humidity place, the inside humidity of switch board has promptly and surpasss predetermine the trend of the maximum value of the scope at humidity place, feed back the above-mentioned condition to monitored control system this moment, send early warning signal to monitored control system promptly for monitored control system is convenient for the acquisition of the trend of change of the inside humidity of switch board, thereby makes the operation potential safety hazard to equipment in the switch board play early warning in advance, and then is convenient for the monitoring personnel to formulate corresponding solution.
In one embodiment, before the detecting whether the first humidity change rate is greater than or equal to zero, the method further comprises: acquiring a second humidity change rate, wherein the second humidity change rate is the change rate of the external humidity of the control cabinet; when the first humidity change rate is greater than or equal to zero, sending an early warning signal to a monitoring system comprises: detecting whether the first rate of change of humidity is less than the second rate of change of humidity when the first rate of change of humidity is greater than or equal to zero; and when the first humidity change rate is smaller than the second humidity change rate, sending a first early warning signal to a monitoring system. In this embodiment, the dehumidifying device inside the control cabinet is used for reducing the internal humidity of the control cabinet, for example, when the external environment of the control cabinet is in humidity increase and the dehumidifying device is turned on, the increase of the internal humidity of the control cabinet will be smaller than the increase of the external humidity of the control cabinet; for another example, when the external environment of the control cabinet is at a reduced humidity and the dehumidification device is turned on, the magnitude of the reduced internal humidity of the control cabinet will be greater than the magnitude of the reduced external humidity of the control cabinet. The second humidity change rate is a change condition of the external humidity of the control cabinet, that is, the second humidity change rate is a change trend of the external humidity of the control cabinet, that is, the second humidity change rate reflects an increase or decrease trend of the external humidity of the control cabinet. The first humidity change rate is larger than or equal to zero, the internal humidity of the control cabinet is indicated to be in an increasing trend, the first humidity change rate is smaller than the second humidity change rate, the external humidity of the control cabinet is also indicated to be in an increasing trend, the increasing amplitude of the internal humidity of the control cabinet is smaller than the increasing amplitude of the external humidity of the control cabinet, and meanwhile, the dehumidifying equipment inside the control cabinet is also indicated to be in a working state. At this moment, the above situation is fed back to the monitoring system, namely, a first early warning signal is sent to the monitoring system, wherein the first early warning signal is an early warning signal that the internal humidity of the control cabinet exceeds the maximum limit of the preset humidity, so that early warning is played for the operation safety hazard of equipment in the control cabinet, and therefore monitoring personnel can conveniently make a corresponding solution.
In one embodiment, said detecting whether said first humidity rate of change is less than said second humidity rate of change further comprises: and when the first humidity change rate is greater than or equal to the second humidity change rate, sending a second early warning signal to a monitoring system. In this embodiment, the dehumidifying device inside the control cabinet is used for reducing the internal humidity of the control cabinet, for example, when the external environment of the control cabinet is in humidity increase and the dehumidifying device is turned on, the increase of the internal humidity of the control cabinet will be smaller than the increase of the external humidity of the control cabinet; for another example, when the external environment of the control cabinet is at a reduced humidity and the dehumidification device is turned on, the magnitude of the reduced internal humidity of the control cabinet will be greater than the magnitude of the reduced external humidity of the control cabinet. Because the first humidity change rate is greater than or equal to zero, the internal humidity of the control cabinet is in an increasing trend at the moment, and the first humidity change rate is greater than or equal to the second humidity change rate, which indicates that the increasing amplitude of the internal humidity of the control cabinet is greater than the increasing amplitude of the external humidity of the control cabinet, wherein the external humidity of the control cabinet is possibly in a decreasing trend, the external humidity of the control cabinet can also be in a small-amplitude increasing trend, and when the dehumidification equipment in the control cabinet works normally, the increasing amplitude of the internal humidity of the control cabinet is less than the increasing amplitude of the external humidity of the control cabinet. At this time, the increase range of the internal humidity of the control cabinet is larger than the increase range of the external humidity of the control cabinet, which indicates that the dehumidifying equipment in the control cabinet is in a non-working state, i.e., the dehumidifying equipment in the control cabinet fails to be started, and cannot inhibit the increase trend of the internal humidity of the control cabinet, and the second early warning signal is a fault warning signal of the dehumidifying equipment. Like this, the inside humidity increase of switch board is too big, not only makes the inside humidity of switch board have and surpasss the trend of the scope of predetermineeing humidity, but also shows that dehumidification equipment in the switch board is in the fault state, plays the control to dehumidification equipment running state in the switch board, is convenient for carry out the early warning to the fault state of dehumidification equipment in the switch board.
In one embodiment, the detecting whether the first humidity change rate is greater than or equal to zero further comprises: detecting whether the first humidity rate of change is less than or equal to the second humidity rate of change when the first humidity rate of change is less than zero; and when the first humidity change rate is smaller than or equal to the second humidity change rate, sending a normal operation signal to a monitoring system. In this embodiment, the dehumidifying device inside the control cabinet is used for reducing the internal humidity of the control cabinet, for example, when the external environment of the control cabinet is in humidity increase and the dehumidifying device is turned on, the increase of the internal humidity of the control cabinet will be smaller than the increase of the external humidity of the control cabinet; for another example, when the external environment of the control cabinet is at a reduced humidity and the dehumidification device is turned on, the magnitude of the reduced internal humidity of the control cabinet will be greater than the magnitude of the reduced external humidity of the control cabinet. The first humidity change rate is less than zero, which indicates that the internal humidity of the control cabinet has a decreasing trend, i.e. the internal humidity of the control cabinet gradually decreases, and the first humidity change rate is less than or equal to the second humidity change rate, which indicates that the external humidity of the control cabinet has two trends, for example, when the external humidity of the control cabinet is greater than or equal to zero, which indicates that the external humidity of the control cabinet has an increasing trend; for another example, when the external humidity of the control cabinet is less than zero, it indicates that the external humidity of the control cabinet has a decreasing trend, and the decreasing amplitude of the external humidity of the control cabinet is smaller than the decreasing amplitude of the internal humidity of the control cabinet, i.e. the decreasing amplitude of the internal humidity of the control cabinet is larger than the decreasing amplitude of the external humidity of the control cabinet. Under the condition that dehumidification equipment inside the switch board normally works, when the outside humidity of switch board reduces, the reduction range of the inside humidity of switch board is greater than the reduction range of the outside humidity of switch board. Like this, no matter the outside humidity of switch board is in the increase or the trend that reduces, the inside humidity of switch board all is in the reduction state, accords with the condition that dehumidification equipment inside the switch board normally works and the outside humidity of switch board reduces, has shown that the operating condition of the inside dehumidification equipment of switch board is normal, and the inside humidity of switch board this moment will reduce gradually, and the inside humidity of switch board is unable to exceed predetermine the scope upper limit of humidity, with above-mentioned condition with normal operating signal transmission to monitored control system, the monitoring personnel of being convenient for to the inside humidity's of switch board monitoring.
In one embodiment, said detecting whether said first humidity rate of change is less than or equal to said second humidity rate of change further comprises: and when the first humidity change rate is greater than the second humidity change rate, sending a third early warning signal to a monitoring system. In this embodiment, the dehumidifying device inside the control cabinet is used for reducing the internal humidity of the control cabinet, for example, when the external environment of the control cabinet is in humidity increase and the dehumidifying device is turned on, the increase of the internal humidity of the control cabinet will be smaller than the increase of the external humidity of the control cabinet; for another example, when the external environment of the control cabinet is at a reduced humidity and the dehumidification device is turned on, the magnitude of the reduced internal humidity of the control cabinet will be greater than the magnitude of the reduced external humidity of the control cabinet. The first humidity change rate is smaller than zero, so that the internal humidity of the control cabinet is indicated to be in a reduction trend, and the first humidity change rate is larger than the second humidity change rate, so that the reduction range of the internal humidity of the control cabinet is smaller than the reduction range of the external humidity of the control cabinet. Under the inside dehumidification equipment of switch board normally worked the condition, when the outside humidity of switch board reduces, the reduction amplitude of the inside humidity of switch board is greater than the reduction amplitude of the outside humidity of switch board, and works as first humidity rate of change is greater than during the second humidity rate of change, but is different with the inside dehumidification equipment of switch board normal operating's the condition, has shown that the inside dehumidification equipment of switch board is in inoperative state, and the inside dehumidification equipment of switch board fails normal work promptly, has shown simultaneously that the inside dehumidification equipment of switch board is trouble operating condition. And the third early warning signal is an early warning signal when the dehumidifying equipment in the control cabinet runs in a fault.
In one embodiment, the obtaining the first humidity change rate includes: sequentially acquiring a plurality of first humidity values according to a time sequence; and acquiring a first humidity change rate according to a plurality of first humidity values. In this embodiment, the plurality of first humidity values are internal humidities of the control cabinet at different times, and the first humidity change rate is a change trend of the internal humidities of the control cabinet at the plurality of different times. The first humidity change rate is an average value obtained by calculating the difference value of the internal humidity of the control cabinet corresponding to two adjacent moments. The difference values of the plurality of first humidity values are averaged according to the plurality of first humidity values which are sequentially acquired according to the time sequence, the average value of the difference values is the first humidity change rate, the change trend of the internal humidity of the control cabinet is reflected, and the comparison with the second humidity change rate is facilitated, so that the corresponding early warning signal is sent according to the comparison result, and the internal condition of the control cabinet is conveniently and accurately judged.
In one embodiment, before obtaining the first humidity change rate according to the plurality of first humidity values, the method further includes: detecting whether the first humidity value is larger than a first preset humidity value or not; and returning to the previous step when the first humidity value is less than or equal to the first preset humidity value. In this embodiment, first predetermined humidity value is the humidity that corresponds when the dehumidification equipment of switch board inside was opened, moreover, first predetermined humidity value is still minimum humidity in the predetermined humidity range interval. Whether the first humidity value is larger than a first preset humidity value or not is detected, whether the internal humidity of the control cabinet is larger than the humidity when the dehumidifying equipment is opened or not is indicated, and whether the dehumidifying equipment inside the control cabinet is in an opening state or not is judged conveniently according to a comparison result of the first humidity change rate and the second humidity change rate. Before the internal humidity of the control cabinet is increased to the first preset humidity value, the size relation between the first humidity change rate and the second humidity change rate is changed, and the change in the period is a normal condition and does not need to be subjected to early warning processing. At this moment, the inside humidity of switch board is the humidity that corresponds when being less than dehumidification equipment and opening, and the rate of the inside humidity increase of switch board is probably less than the rate of the outside humidity increase of switch board, promptly first humidity rate of change is less than the second humidity rate of change belongs to the normal growth of the inside and outside humidity of switch board, need not send any early warning signal, only needs to return to the last step in order to reacquire first humidity value. According to the first humidity value reacquired like this with the inside humidity that acquires the switch board reach the first humidity rate of change of humidity when dehumidification equipment opened, reduced before the inside humidity of switch board reaches the humidity that dehumidification equipment opened the time correspondence, to the erroneous judgement rate of the inside humidity condition of switch board, improved the degree of accuracy of the inside humidity control to the switch board.
In one embodiment, the detecting whether the first humidity value is greater than a first preset humidity value further includes: when the first humidity value is larger than the first preset humidity value, detecting whether the first humidity value is larger than a second preset humidity value; and when the first humidity value is larger than the second preset humidity value, sending an alarm signal to a monitoring system. In this embodiment, the first humidity value is greater than the first preset humidity value, and it indicates that the internal humidity of the control cabinet is greater than the humidity corresponding to the dehumidification device when being opened, i.e., indicates that the internal humidity of the control cabinet is greater than the minimum humidity of the preset humidity, and at this time, the size of the internal humidity of the control cabinet determines whether the internal humidity exceeds the limited humidity, i.e., it is necessary to determine whether the internal humidity of the control cabinet is greater than the maximum value of the preset humidity range, and the internal device of the control cabinet will affect the service life of the internal device in a high-humidity environment for a long time. Therefore, when the first humidity value is larger than the second preset humidity value, the fact that the internal humidity of the control cabinet exceeds the maximum value of the preset humidity is indicated, namely, the fact that the internal humidity of the control cabinet exceeds the limited humidity is indicated, namely, the fact that the internal humidity state of the control cabinet is a high humidity state is indicated, the state at the moment is sent to a monitoring system through an alarm signal, monitoring personnel can monitor the internal humidity state of the control cabinet in real time conveniently, and therefore a processing scheme can be made conveniently.
In one embodiment, the preset humidity range is from the first preset humidity value to the second preset humidity value. In this embodiment, first predetermined humidity value does the minimum humidity that the scope of predetermined humidity corresponds, second predetermined humidity value does the maximum humidity that the scope of predetermined humidity corresponds, moreover, humidity when the dehumidification equipment that first predetermined humidity value was the inside setting of switch board is opened, second predetermined humidity value reaches the maximum humidity that the equipment was allowed when moving for the inside humidity of switch board. Therefore, according to the range of the preset humidity, the early warning signal can be timely sent before the second preset humidity value is reached, and the effect of timely early warning is achieved.
In one embodiment, please refer to fig. 2, which provides a control cabinet humidity early warning apparatus for implementing the control cabinet humidity early warning method according to any one of the above embodiments, where the control cabinet humidity early warning apparatus 10 includes: the system comprises a first sensor 100, a second sensor 200 and a processing module 300, wherein the first sensor 100 and the second sensor 200 are respectively connected with the input end of the processing module 300, and the output end of the processing module 300 is used for being connected with a monitoring system; the first sensor 100 is used for acquiring the internal humidity of the control cabinet; the second sensor 200 is used for acquiring the external humidity of the control cabinet; the processing module 300 is configured to obtain a first humidity change rate within a preset humidity range, where the first humidity change rate is a change rate of the internal humidity of the control cabinet; the processing module 300 is further configured to detect whether the first humidity rate of change is greater than or equal to zero; the processing module 300 is further configured to send an early warning signal to a monitoring system when the first humidity change rate is greater than or equal to zero.
Among the above-mentioned switch board humidity early warning device, humidity in the switch board is in predetermineeing the humidity range, the first humidity value conversion that the treater gathered first sensor is first humidity rate of change, first humidity rate of change is greater than or equal to zero, show that humidity in the switch board increases and has the trend of forward growth, show promptly that humidity in the switch board has the trend that surpasss predetermineeing the humidity range, processing module sends early warning signal to monitored control system this moment, be convenient for play the effect of early warning in advance to equipment operation potential safety hazard.
In one embodiment, the control cabinet comprises a cabinet body and the control cabinet humidity early warning device, the processing module and the first sensor are respectively arranged in the cabinet body, the second sensor is arranged outside the cabinet body, a through hole is formed in the cabinet body, the second sensor is connected with the input end of the processing module through a communication line, the communication line is arranged in the through hole in a penetrating mode, and the output end of the processing module is used for being connected with a monitoring system.
In one embodiment, the output of the processing module is connected to the monitoring system by a wire.
In one embodiment, the output of the processing module is wirelessly connected to the monitoring system.
Among the above-mentioned switch board, humidity in the switch board is in predetermineeing the humidity range, the first humidity value conversion that the treater gathered first sensor is first humidity rate of change, first humidity rate of change is greater than or equal to zero, show that humidity in the switch board increases and has the trend of forward growth, show promptly that humidity in the switch board has the trend that surpasss predetermineeing the humidity range, send early warning signal to monitored control system this moment, be convenient for play the effect of early warning in advance to equipment operation potential safety hazard.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A control cabinet humidity early warning method is characterized by comprising the following steps:
acquiring a first humidity change rate within a preset humidity range, wherein the first humidity change rate is the change rate of the internal humidity of the control cabinet;
detecting whether the first rate of humidity change is greater than or equal to zero;
and when the first humidity change rate is larger than or equal to zero, sending an early warning signal to a monitoring system.
2. The control cabinet humidity warning method of claim 1, wherein before detecting whether the first humidity rate of change is greater than or equal to zero, further comprising:
acquiring a second humidity change rate, wherein the second humidity change rate is the change rate of the external humidity of the control cabinet;
when the first humidity change rate is greater than or equal to zero, sending an early warning signal to a monitoring system comprises:
detecting whether the first rate of change of humidity is less than the second rate of change of humidity when the first rate of change of humidity is greater than or equal to zero;
and when the first humidity change rate is smaller than the second humidity change rate, sending a first early warning signal to a monitoring system.
3. The control cabinet humidity warning method of claim 2, wherein the detecting whether the first humidity rate of change is less than the second humidity rate of change further comprises:
and when the first humidity change rate is greater than or equal to the second humidity change rate, sending a second early warning signal to a monitoring system.
4. The control cabinet humidity warning method of claim 2, wherein after detecting whether the first humidity rate of change is greater than or equal to zero, further comprising:
detecting whether the first humidity rate of change is less than or equal to the second humidity rate of change when the first humidity rate of change is less than zero;
and when the first humidity change rate is smaller than or equal to the second humidity change rate, sending a normal operation signal to a monitoring system.
5. The control cabinet humidity warning method of claim 4, wherein the detecting whether the first humidity rate of change is less than or equal to the second humidity rate of change further comprises:
and when the first humidity change rate is greater than the second humidity change rate, sending a third early warning signal to a monitoring system.
6. The control cabinet humidity warning method of claim 1, wherein the obtaining a first humidity rate of change comprises:
sequentially acquiring a plurality of first humidity values according to a time sequence;
and acquiring a first humidity change rate according to a plurality of first humidity values.
7. The control cabinet humidity warning method of claim 6, wherein before obtaining the first humidity rate of change based on the plurality of first humidity values, further comprising:
detecting whether the first humidity value is larger than a first preset humidity value or not;
and returning to the previous step when the first humidity value is less than or equal to the first preset humidity value.
8. The control cabinet humidity early warning method according to claim 7, wherein after detecting whether the first humidity value is greater than a first preset humidity value, the method further comprises:
when the first humidity value is larger than the first preset humidity value, detecting whether the first humidity value is larger than a second preset humidity value;
and when the first humidity value is larger than the second preset humidity value, sending an alarm signal to a monitoring system.
9. The utility model provides a switch board humidity early warning device which characterized in that includes: the monitoring system comprises a first sensor, a second sensor and a processing module, wherein the first sensor and the second sensor are respectively connected with the input end of the processing module, and the output end of the processing module is used for being connected with a monitoring system;
the first sensor is used for acquiring the internal humidity of the control cabinet;
the second sensor is used for acquiring the external humidity of the control cabinet;
the processing module is used for acquiring a first humidity change rate within a preset humidity range, wherein the first humidity change rate is the change rate of the internal humidity of the control cabinet; the processing module is further configured to detect whether the first rate of humidity change is greater than or equal to zero; the processing module is further used for sending an early warning signal to a monitoring system when the first humidity change rate is larger than or equal to zero.
10. A control cabinet is characterized by comprising a cabinet body and the control cabinet humidity early warning device as claimed in claim 9, wherein the processing module and the first sensor are respectively arranged in the cabinet body, the second sensor is arranged outside the cabinet body, a through hole is formed in the cabinet body, the second sensor is connected with the input end of the processing module through a communication line, the communication line is arranged in the through hole in a penetrating manner, and the output end of the processing module is used for being connected with a monitoring system.
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Cited By (2)
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| CN113311329A (en) * | 2021-04-27 | 2021-08-27 | 湖南省水利投地方电力有限公司 | Method and system for detecting insulation fault of stator core of hydraulic generator and storage medium |
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