CN116665393A - Electrical fire monitoring method and system - Google Patents
Electrical fire monitoring method and system Download PDFInfo
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Abstract
The application relates to an electric fire monitoring method and system, and relates to the technical field of power equipment; the electrical parameter information comprises current information and voltage information; the current information includes a first characteristic current value; judging whether the first characteristic current value is larger than an upper threshold value of a preset interval or not; if so, obtaining a second duration based on the sum of the durations of the first characteristic current value larger than the upper threshold value in the preset first duration; obtaining an overload ratio based on the second time period and the first time period; and judging whether the overload ratio is larger than a preset ratio, and if so, sending overload information to an external terminal. The application has the effects of facilitating the monitoring of the power equipment and adopting corresponding actions based on the monitoring data, thereby reducing the possibility of fire disaster.
Description
Technical Field
The application relates to the technical field of fire alarm, in particular to an electric fire monitoring method and system.
Background
Power equipment is a great deal of convenience for people in modern society. With the continuous development and expansion of power equipment, the application range of power is wider and wider, and the generated power safety problem is also paid attention to.
In order to reduce the possibility of fire when the power equipment is operated, it is necessary to monitor the operation data of the power equipment and to take corresponding actions based on the monitored data.
Disclosure of Invention
In order to facilitate monitoring of power equipment and reduce the possibility of fire occurrence by adopting corresponding actions based on monitoring data, the application provides an electric fire monitoring method and system.
In a first aspect, the present application provides an electrical fire monitoring method, which adopts the following technical scheme.
An electrical fire monitoring method comprising:
acquiring electrical parameter information of the power equipment in real time; the electrical parameter information comprises current information and voltage information; the current information includes a first characteristic current value;
judging whether the first characteristic current value is larger than an upper threshold value of a preset interval or not; if so, obtaining a second duration based on the sum of the durations of the first characteristic current value larger than the upper threshold value in the preset first duration;
obtaining an overload ratio based on the ratio of the second time length to the first time length; the method comprises the steps of,
and judging whether the overload ratio is larger than a preset ratio, and if so, sending overload information to an external terminal.
By adopting the technical scheme, the electric parameter information in the electric equipment is acquired, the electric parameter information is processed based on the acquired electric parameter information, whether the electric equipment is in an abnormal state is judged, at the moment, the processor sends overload information to the external terminal, and then the electric equipment is monitored and corresponding actions are adopted based on the monitoring data.
Optionally, the voltage information includes a voltage phase, and the current information further includes a current phase; after obtaining the electrical parameter information of the electrical equipment, the method further comprises:
obtaining a first power factor based on the voltage phase and the current phase;
judging whether the first power factor is positioned in a preset power factor interval or not; if not, the first prompt message is sent to the external terminal.
Optionally, if it is determined that the first power factor is not located after the preset power factor interval, the method further includes: step S301, a first control signal is sent to a reactive compensation capacitor module; the first control signal is used for triggering the preset number of capacitors of the reactive compensation capacitor module to work; the reactive compensation capacitor module is connected in parallel with the power equipment; the reactive compensation capacitor module comprises a plurality of capacitors which are connected in parallel;
step S302, after the reactive compensation capacitor module runs for a preset time, a second power factor is obtained based on the current phase and the voltage phase;
step S303, judging whether the second power factor is located in the preset power factor interval; if yes, go to step S304; if not, executing step S305;
step S304, sending a second prompt message to an external terminal;
step S305, a second control signal is sent to the reactive compensation capacitor module; the second control signal is used for triggering the reactive compensation capacitor module to increase the number of capacitors connected to the power equipment in parallel one by one, and the steps S302-S303 are repeated.
Optionally, after determining that the second power factor is located in the preset power factor interval, the method further includes:
acquiring temperatures of a plurality of detection points of the power equipment to obtain a plurality of detection temperature values;
based on a plurality of detected temperature values, a temperature characteristic value; the method comprises the steps of,
judging whether the temperature characteristic value is larger than a preset value or not; if yes, sending a third prompt message to the external terminal.
Optionally, after determining that the temperature characteristic value is greater than a preset value, the method further includes:
re-acquiring the electrical parameter information of the electrical equipment;
obtaining harmonic components in the voltage based on the voltage information in the electrical parameter information; the method comprises the steps of,
judging whether the harmonic component in the voltage is larger than a preset amplitude value; and if so, sending a third control signal to a rectifying device of the power equipment, wherein the third control signal is used for triggering the rectifying device to increase the rectifying phase number or the rectifying pulse number.
In a second aspect, the present application provides an electrical fire monitoring method according to the following technical solution.
An electrical fire monitoring system, the system comprising:
the acquisition module is used for: acquiring electrical parameter information of the power equipment in real time; the electrical parameter information comprises current information and voltage information; the current information includes a first characteristic current value;
a first processing module for: judging whether the first characteristic current value is larger than an upper threshold value of a preset interval or not; if so, obtaining a second duration based on the sum of the durations of the first characteristic current value larger than the upper threshold value in the preset first duration;
a second processing module for: obtaining an overload ratio based on the second time period and the first time period; the method comprises the steps of,
a third processing module for: judging whether the overload ratio is larger than a preset ratio, and if so, sending overload information to an external terminal; the overload information is used for triggering the external terminal to generate fire risk prompt information.
Optionally, the voltage information includes a voltage phase, and the current information further includes a current phase; the system further comprises:
a fourth processing module for: after acquiring electrical parameter information of the electrical equipment, obtaining a first power factor based on the voltage phase and the current phase; the method comprises the steps of,
a fifth processing module for: judging whether the first power factor is positioned in a preset power factor interval or not; if not, the first prompt message is sent to the external terminal.
Optionally, the system further comprises: a sixth processing module for:
after determining that the first power factor is not located in the preset power factor interval, executing the following steps:
step S301, a first control signal is sent to a reactive compensation capacitor module; the first control signal is used for triggering the preset number of capacitors of the reactive compensation capacitor module to work; the reactive compensation capacitor module is connected in parallel with the power equipment; the reactive compensation capacitor module comprises a plurality of capacitors which are connected in parallel;
step S302, after the reactive compensation capacitor module runs for a preset time, a second power factor is obtained based on the current phase and the voltage phase;
step S303, judging whether the second power factor is located in the preset power factor interval; if yes, go to step S304; if not, executing step S305;
step S304, sending a second prompt message to an external terminal;
step S305, a second control signal is sent to the reactive compensation capacitor module; the second control signal is used for triggering the reactive compensation capacitor module to increase the number of capacitors connected to the power equipment in parallel one by one, and the steps S302-S303 are repeated.
Optionally, the system further comprises a seventh processing module, where the seventh processing module is configured to: after the second power factor is determined to be located in the preset power factor interval, acquiring temperatures of a plurality of detection points of the power equipment to obtain a plurality of detection temperature values; based on a plurality of detected temperature values, a temperature characteristic value; judging whether the temperature characteristic value is larger than a preset value or not; if yes, sending a third prompt message to the external terminal.
Optionally, the system further comprises an eighth processing module, where the eighth processing module is configured to: after the temperature characteristic value is determined to be larger than a preset value, the method further comprises the following steps: re-acquiring the electrical parameter information of the electrical equipment; obtaining harmonic components in the voltage based on the voltage information in the electrical parameter information; judging whether the harmonic component in the voltage is larger than a preset amplitude value; and if so, sending a third control signal to a rectifying device of the power equipment, wherein the third control signal is used for triggering the rectifying device to increase the rectifying phase number or the rectifying pulse number.
Drawings
FIG. 1 is a flow chart of one embodiment of a method for monitoring an electrical fire in accordance with the present application;
FIG. 2 is a method flow diagram of another embodiment of an electrical fire monitoring method of the present application;
FIG. 3 is a method flow diagram of another embodiment of an electrical fire monitoring method of the present application;
FIG. 4 is a method flow diagram of another embodiment of an electrical fire monitoring method of the present application;
FIG. 5 is a method flow diagram of another embodiment of an electrical fire monitoring method of the present application;
FIG. 6 is a system block diagram of one embodiment of an electrical fire monitoring system of the present application;
in the figure, 601, the acquisition module; 602. a first processing module; 603. a second processing module; 604. a third processing module; 605. a fourth processing module; 606. a fifth processing module; 607. a sixth processing module; 608. a seventh processing module; 609. and an eighth processing module.
Description of the embodiments
The application is further described with reference to the drawings and the specific embodiments below:
the embodiment of the application discloses an electric fire monitoring method. Referring to fig. 1, as one embodiment of an electrical fire monitoring method, an electrical fire monitoring method includes the steps of:
and step S101, acquiring electrical parameter information of the power equipment in real time.
The electrical parameter information comprises current information and voltage information; the current information includes a first characteristic current value.
Specifically, the current information can be collected through a current transformer connected to the power equipment, the voltage information can be collected through a voltage transformer connected to the power equipment, and the electrical parameter information of the power equipment can be obtained through a oscillometric device and the like after the electrical signal in the power equipment is sampled. The first characteristic current value may be an average value of current values of the power equipment in a period of time, or may be an average value obtained by performing error processing on the current values in a period of time, where the first characteristic value represents a current magnitude of the power equipment.
Step S102, judging whether the first characteristic current value is larger than an upper threshold value of a preset interval; if so, obtaining a second duration based on the sum of durations of which the first characteristic current value is larger than the upper threshold value in the preset first duration.
Specifically, an excessive current value in the power equipment can cause the temperature of the cable of the power equipment to rise, so that the cable is insulated and softened, and the service life of the cable is reduced. When the collected first characteristic current value is larger than the upper threshold value of the preset interval, the power equipment is in an overload abnormal state, at the moment, the processor counts the sum of the time lengths of the first characteristic current value larger than the upper threshold value in the preset first time length to further obtain the second time length, and because the power equipment is in a fluctuation state in real time, if the first characteristic current value is larger than the upper threshold value of the preset interval, prompt is immediately carried out, and the situation of false alarm is easy to occur.
Step S103, obtaining the overload ratio based on the second time length and the first time length.
Step S104, judging whether the overload ratio is larger than a preset ratio, and if so, sending overload information to an external terminal; the overload information is used for triggering the external terminal to generate fire risk prompt information.
Specifically, when the overload ratio is greater than the preset ratio, the overload condition of the current power equipment is indicated, and the overload of the power equipment easily causes overheat of the electric equipment, so that fire disaster of the electric equipment is easily caused. At this time, the processor sends overload information to the external terminal, and the external terminal can be central control equipment, an external smart phone or the like and is used for reminding corresponding staff. In the application, the electric parameter information in the electric equipment is acquired and processed to judge whether the electric equipment is in an abnormal state, when the overload ratio is larger than the preset ratio, the processor sends the overload information to the external terminal, and the external middle end prompts that the electric equipment has a certain fire risk, so that the electric equipment can be processed more quickly by staff, and the possibility of fire occurrence of the electric equipment is reduced.
Referring to fig. 2, as one embodiment of an electrical fire monitoring method, the voltage information includes a voltage phase, and the current information further includes a current phase; after obtaining the electrical parameter information of the electrical equipment, the method further comprises:
step S201, a first power factor is obtained based on the voltage phase and the current phase.
Step S202, judging whether the first power factor is located in a preset power factor interval or not; if not, the first prompt message is sent to the external terminal.
Specifically, the cosine of the phase difference (Φ) between the voltage and the current is called a power factor, denoted by the symbol cosΦ, which is the ratio of the active power to the apparent power in numerical terms, i.e., cosΦ=p/S. Electric loads such as motors, transformers, fluorescent lamps, electric arc furnaces, etc., are mostly inductive loads, which during operation need to absorb not only active power but also reactive power to the power system. When the electric load is an inductive load or a capacitive load, a large amount of reactive power is consumed, and the larger reactive power can lower the transmission efficiency of the whole power equipment, so that the normal operation of the power equipment is adversely affected. The first power factor is obtained through the voltage phase and the current phase, whether the first power factor is located in a preset power factor interval is judged, when the first power factor is not located in the preset power factor interval, the fact that the power equipment transmits more idle work is indicated, and at the moment, the processor sends a first prompt signal to an external terminal to remind corresponding staff.
Referring to fig. 3, as one embodiment of an electrical fire monitoring method, after determining that the first power factor is not located in the preset power factor interval, the method further includes:
step S301, a first control signal is sent to a reactive compensation capacitor module; the first control signal is used for triggering the work of the preset number of capacitors of the reactive compensation capacitor module; the reactive compensation capacitor module is connected in parallel with a power transmission line of the power equipment; the reactive compensation capacitor module comprises a plurality of capacitors which are connected in parallel;
step S302, after the reactive compensation capacitor module runs for a preset time, obtaining a second power factor based on the current phase and the voltage phase;
step S303, judging whether the second power factor is located in a preset power factor interval; if yes, go to step S304; if not, executing step S305;
step S304, sending a second prompt message to an external terminal;
step S305, a second control signal is sent to the reactive compensation capacitor module; the second control signal is used to trigger the reactive compensation capacitor module to increase the number of capacitors of the power transmission line connected in parallel to the power equipment one by one, and steps S302 to S303 are repeated.
The reactive compensation capacitor module comprises a plurality of capacitors which are connected in parallel, and the reactive compensation capacitor module is connected in parallel with the power equipment. After determining that the first power factor is not located in the preset power factor interval, the processor sends a first control signal to the reactive compensation capacitor module. When the reactive compensation capacitor module is connected in parallel and works on the power equipment, reactive power consumed by compensating the inductive load can be provided, and reactive power provided by the power equipment to the inductive load is reduced. The reactive compensation capacitors connected in parallel to the power equipment will have an amplifying effect on the harmonics, which will cause local overheating of the transformer, so in the present application the number of capacitors connected in parallel to the power transmission line of the power equipment and operating is increased one by one. The flow of reactive power in the power equipment is reduced, so that the electric energy loss is reduced, and the electric energy transmission efficiency is improved.
Referring to fig. 4, as one embodiment of an electrical fire monitoring method, if it is determined that the first power factor is not located in the preset power factor interval, the method further includes:
step S401, acquiring temperatures of a plurality of detection points of the power equipment to obtain a plurality of detection temperature values;
step S402, based on a plurality of detected temperature values, a temperature characteristic value is obtained; the method comprises the steps of,
step S403, judging whether the temperature characteristic value is larger than a preset value; if yes, sending a third prompt message to the external terminal.
In particular, reactive compensation capacitors connected in parallel to the power equipment may have an amplifying effect on harmonics, which may cause local overheating of the transformer. The detection points are preset, and the temperature values of the detection points can be obtained through the temperature sensors arranged at the detection points. The processor is communicated with the temperature sensor, the temperature sensor detects the temperature of a corresponding detection point and then sends the temperature data to the processor, the processor obtains a temperature characteristic value based on the obtained temperature data, the temperature characteristic value can be obtained by summing all the temperature data and taking an average value, or can be obtained by summing all the temperature data and taking an average value after error processing, and when the temperature characteristic value is judged to be larger than a preset value, the processor sends a third prompt information value external terminal to prompt corresponding staff.
Referring to fig. 5, as one embodiment of an electrical fire monitoring method, after determining that the temperature characteristic value is greater than the preset value, it further includes:
step S501, electrical parameter information of the electrical equipment is collected again;
step S502, harmonic components in the voltage are obtained based on the voltage information in the electrical parameter information; the method comprises the steps of,
step S503, judging whether the harmonic component in the voltage is larger than a preset amplitude value; and if so, sending a third control signal to a rectifying device of the power equipment, wherein the third control signal is used for triggering the rectifying device to increase the rectifying phase number or the rectifying pulsation number.
Specifically, the processor collects electrical parameter information of the electrical equipment again and obtains harmonic components in the voltage based on the voltage information in the electrical parameter information, when the harmonic components are judged to be larger than a preset amplitude, the reason for heating is indicated to be most probably caused by the harmonic, at the moment, the processor sends a third control signal to a rectifying device of the electrical equipment, and the rectifying phase number is increased or the rectifying pulsation number is increased, so that the harmonic with lower frequency is effectively restrained; when the number of rectifying phases is doubled, harmonic current is reduced by about four times, the number of harmonic waves is greatly reduced, the temperature of the transformer can be further reduced, and the normal operation of power equipment is maintained.
Referring to fig. 6, the present application also provides an electrical fire monitoring system as one of the embodiments of the electrical fire monitoring system, the system comprising:
an acquisition module 601, configured to: acquiring electrical parameter information of the power equipment in real time; the electrical parameter information comprises current information and voltage information; the current information includes a first characteristic current value;
a first processing module 602, configured to: judging whether the first characteristic current value is larger than an upper threshold value of a preset interval or not; if yes, obtaining a second duration based on the sum of durations of which the first characteristic current value is larger than an upper threshold value in a preset first duration;
a second processing module 603, configured to: obtaining an overload ratio based on the ratio of the second time length and the first time length, namely, the second time length/the first time length=the overload ratio; the method comprises the steps of,
a third processing module 604, configured to: judging whether the overload ratio is larger than a preset ratio, and if so, sending overload information to an external terminal; the overload information is used for triggering the external terminal to generate fire risk prompt information.
As another embodiment of an electrical fire monitoring system, the voltage information includes a voltage phase, and the current information further includes a current phase; the system further comprises:
a fourth processing module 605: after acquiring electrical parameter information of the electrical equipment, acquiring a first power factor based on the voltage phase and the current phase; the method comprises the steps of,
a fifth processing module 606 for: judging whether the first power factor is located in a preset power factor interval or not; if not, the first prompt message is sent to the external terminal.
As another embodiment of an electrical fire monitoring system, the system further comprises: a sixth processing module 607, the sixth processing module 607 being configured to:
after determining that the first power factor is not located in the preset power factor interval, executing the following steps:
step S301, a first control signal is sent to a reactive compensation capacitor module; the first control signal is used for triggering the work of the preset number of capacitors of the reactive compensation capacitor module; the reactive compensation capacitor module is connected in parallel with the power equipment; the reactive compensation capacitor module comprises a plurality of capacitors which are connected in parallel;
step S302, after the reactive compensation capacitor module runs for a preset time, obtaining a second power factor based on the current phase and the voltage phase;
step S303, judging whether the second power factor is located in a preset power factor interval; if yes, go to step S304; if not, executing step S305;
step S304, sending a second prompt message to an external terminal;
step S305, a second control signal is sent to the reactive compensation capacitor module; the second control signal is used to trigger the reactive compensation capacitor module to increase the number of capacitors connected in parallel to the power device one by one, repeating steps S302-S303.
As another embodiment of an electrical fire monitoring system, the system further comprises a seventh processing module 608, the seventh processing module 608 being configured to: after the second power factor is determined to be located in a preset power factor interval, acquiring temperatures of a plurality of detection points of the power equipment to obtain a plurality of detection temperature values; based on a plurality of detected temperature values, a temperature characteristic value; judging whether the temperature characteristic value is larger than a preset value or not; if yes, sending a third prompt message to the external terminal.
As another embodiment of an electrical fire monitoring system, the system further comprises an eighth processing module 609, the eighth processing module 609 being configured to: after the temperature characteristic value is determined to be larger than the preset value, the method further comprises the following steps: re-acquiring electrical parameter information of the electrical equipment; obtaining harmonic components in the voltage based on the voltage information in the electrical parameter information; judging whether harmonic components in the voltage are larger than a preset amplitude value or not; and if so, sending a third control signal to a rectifying device of the power equipment, wherein the third control signal is used for triggering the rectifying device to increase the rectifying phase number or the rectifying pulsation number.
The embodiment of the application also discloses computer equipment.
Specifically, the apparatus includes a memory and a server, the memory having stored thereon a computer program capable of being loaded by the server and executing any one of the above-described electrical fire monitoring methods.
The embodiment of the application also discloses a computer readable storage medium.
Specifically, the computer-readable storage medium stores a computer program that can be loaded by a server and that performs any one of the electrical fire monitoring methods described above, the computer-readable storage medium including, for example: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing description of the preferred embodiments of the application is not intended to limit the scope of the application in any way, including the abstract and drawings, in which case any feature disclosed in this specification (including abstract and drawings) may be replaced by alternative features serving the same, equivalent purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
Claims (10)
1. An electrical fire monitoring method, comprising:
acquiring electrical parameter information of the power equipment in real time; the electrical parameter information comprises current information and voltage information; the current information includes a first characteristic current value;
judging whether the first characteristic current value is larger than an upper threshold value of a preset interval or not; if so, obtaining a second duration based on the sum of the durations of the first characteristic current value larger than the upper threshold value in the preset first duration;
obtaining an overload ratio based on the ratio of the second time length to the first time length; the method comprises the steps of,
judging whether the overload ratio is larger than a preset ratio, and if so, sending overload information to an external terminal; the overload information is used for triggering the external terminal to generate fire risk prompt information.
2. An electrical fire monitoring method according to claim 1, wherein the voltage information comprises a voltage phase and the current information further comprises a current phase; after obtaining the electrical parameter information of the electrical equipment, the method further comprises:
obtaining a first power factor based on the voltage phase and the current phase;
judging whether the first power factor is positioned in a preset power factor interval or not; if not, the first prompt message is sent to the external terminal.
3. The electrical fire monitoring method of claim 2, wherein if it is determined that the first power factor is not located in the preset power factor interval, the method further comprises:
step S301, a first control signal is sent to a reactive compensation capacitor module; the first control signal is used for triggering the preset number of capacitors of the reactive compensation capacitor module to work; the reactive compensation capacitor module is connected in parallel with a power transmission line of the power equipment; the reactive compensation capacitor module comprises a plurality of capacitors which are connected in parallel;
step S302, after the reactive compensation capacitor module runs for a preset time, a second power factor is obtained based on the current phase and the voltage phase;
step S303, judging whether the second power factor is located in the preset power factor interval; if yes, go to step S304; if not, executing step S305;
step S304, sending a second prompt message to an external terminal;
step S305, a second control signal is sent to the reactive compensation capacitor module; the second control signal is used for triggering the reactive compensation capacitor module to increase the number of capacitors connected to the power transmission line of the power equipment one by one, and the steps S302 to S303 are repeated.
4. An electrical fire monitoring method according to claim 3, further comprising, after determining that the second power factor is within the preset power factor interval:
acquiring temperatures of a plurality of detection points of the power equipment to obtain a plurality of detection temperature values;
based on a plurality of detected temperature values, a temperature characteristic value; the method comprises the steps of,
judging whether the temperature characteristic value is larger than a preset value or not; if yes, sending a third prompt message to the external terminal.
5. The electrical fire monitoring method of claim 4, further comprising, after determining that the temperature characteristic value is greater than a preset value:
re-acquiring the electrical parameter information of the electrical equipment;
obtaining harmonic components in the voltage based on the voltage information in the electrical parameter information; the method comprises the steps of,
judging whether the harmonic component in the voltage is larger than a preset amplitude value; and if so, sending a third control signal to a rectifying device of the power equipment, wherein the third control signal is used for triggering the rectifying device to increase the rectifying phase number or the rectifying pulse number.
6. An electrical fire monitoring system, the system comprising:
the acquisition module is used for: acquiring electrical parameter information of the power equipment in real time; the electrical parameter information comprises current information and voltage information; the current information includes a first characteristic current value;
a first processing module for: judging whether the first characteristic current value is larger than an upper threshold value of a preset interval or not; if so, obtaining a second duration based on the sum of the durations of the first characteristic current value larger than the upper threshold value in the preset first duration;
a second processing module for: obtaining an overload ratio based on the second time period and the first time period; the method comprises the steps of,
a third processing module for: judging whether the overload ratio is larger than a preset ratio, and if so, sending overload information to an external terminal; the overload information is used for triggering the external terminal to generate fire risk prompt information.
7. An electrical fire monitoring system as claimed in claim 1 wherein the voltage information comprises a voltage phase and the current information further comprises a current phase; the system further comprises:
a fourth processing module for: after acquiring electrical parameter information of the electrical equipment, obtaining a first power factor based on the voltage phase and the current phase; the method comprises the steps of,
a fifth processing module for: judging whether the first power factor is positioned in a preset power factor interval or not; if not, the first prompt message is sent to the external terminal.
8. An electrical fire monitoring system as claimed in claim 7 wherein the system further comprises: a sixth processing module for:
after determining that the first power factor is not located in the preset power factor interval, executing the following steps:
step S301, a first control signal is sent to a reactive compensation capacitor module; the first control signal is used for triggering the preset number of capacitors of the reactive compensation capacitor module to work; the reactive compensation capacitor module is connected in parallel with a power transmission line of the power equipment; the reactive compensation capacitor module comprises a plurality of capacitors which are connected in parallel;
step S302, after the reactive compensation capacitor module runs for a preset time, a second power factor is obtained based on the current phase and the voltage phase;
step S303, judging whether the second power factor is located in the preset power factor interval; if yes, go to step S304; if not, executing step S305;
step S304, sending a second prompt message to an external terminal;
step S305, a second control signal is sent to the reactive compensation capacitor module; the second control signal is used for triggering the reactive compensation capacitor module to increase the number of capacitors connected to the power transmission line of the power equipment one by one, and the steps S302 to S303 are repeated.
9. An electrical fire monitoring system as claimed in claim 8 wherein the system further comprises a seventh processing module for: after the second power factor is determined to be located in the preset power factor interval, acquiring temperatures of a plurality of detection points of the power equipment to obtain a plurality of detection temperature values; based on a plurality of detected temperature values, a temperature characteristic value; judging whether the temperature characteristic value is larger than a preset value or not; if yes, sending a third prompt message to the external terminal.
10. An electrical fire monitoring system as claimed in claim 9 wherein the system further comprises an eighth processing module for: after the temperature characteristic value is determined to be larger than a preset value, the method further comprises the following steps: re-acquiring the electrical parameter information of the electrical equipment; obtaining harmonic components in the voltage based on the voltage information in the electrical parameter information; judging whether the harmonic component in the voltage is larger than a preset amplitude value; and if so, sending a third control signal to a rectifying device of the power equipment, wherein the third control signal is used for triggering the rectifying device to increase the rectifying phase number or the rectifying pulse number.
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| CN116665393B (en) | 2023-12-22 |
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