CN102929166A - Temperature-based control method and controller of intelligent socket - Google Patents
Temperature-based control method and controller of intelligent socket Download PDFInfo
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- CN102929166A CN102929166A CN2012104212857A CN201210421285A CN102929166A CN 102929166 A CN102929166 A CN 102929166A CN 2012104212857 A CN2012104212857 A CN 2012104212857A CN 201210421285 A CN201210421285 A CN 201210421285A CN 102929166 A CN102929166 A CN 102929166A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000009413 insulation Methods 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 101100434411 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) ADH1 gene Proteins 0.000 description 1
- 101150102866 adc1 gene Proteins 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- PICXIOQBANWBIZ-UHFFFAOYSA-N zinc;1-oxidopyridine-2-thione Chemical class [Zn+2].[O-]N1C=CC=CC1=S.[O-]N1C=CC=CC1=S PICXIOQBANWBIZ-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a temperature-based controller of an intelligent socket. The temperature-based controller comprises a shell, a power supply line led out from the shell and provided with a plug, a first real-time temperature sensor for acquiring an absolute ambient temperature as well as an ambient temperature sensor and a second real-time temperature sensor for acquiring a relative ambient temperature, wherein a main control socket which is connected with the power supply line is installed inside the shell; the ambient temperature sensor and the second real-time temperature sensor are connected with a microprocessor through a comparing circuit UA and an emitter follower circuit UB; the microprocessor is further connected with the first real-time temperature sensor, an alarm circuit and a driving circuit for controlling the power supply of a controlled socket; an AC/DC (Alternative Current/Direct Current) converting circuit supplies power to the circuits; and the sound-light alarm is carried out or the power supply of the controlled socket is controlled by setting an alarm temperature and a power-off temperature for different absolute ambient temperatures and an alarm temperature difference value and a power-off temperature difference value of the relative ambient temperature. The invention also discloses a control method. The temperature-based controller has the beneficial effects of security, reliability and high intelligentization degree.
Description
Technical field
The present invention relates to the socket for the switching power supply, especially relate to intelligence control method and controller with the socket of temperature correlation.
Background technology
When socket (Power conversion board) was used, all there were certain resistance in inner lead, copper latch, and when load current became large, therefore enclosure interior can produce temperature rise; In normal operating range, this temperature rise is acceptable.
When having used non-type contact pin, the copper latch is through lasting plug, perhaps in wet environment, use for a long time and can produce oxide layer, this oxide layer can cause contact pin and copper latch to produce larger contact resistance between the two, under large current conditions, this contact resistance can produce very large heat, and serious meeting is the scope that can bear of standardized component head and shoulders above, temperature rise is very high, can produce following hidden danger:
When high temperature toasted for a long time, the plastic housing of copper latch and corresponding site was melted in serious meeting, made it the heating distortion, but even fire hazard.
In order to address this problem, have in the prior art by disposable fusible link is installed overcurrent is protected, perhaps by being installed, recoverable bimetal element overload protector protects.
As previously described, the high heat that contact resistance increases or some other reason causes might not be that loop current has surpassed rated current, and overload protection device does not reach the condition of action, can not play a protective role.Even the temperature controller of bimetallic strip has been installed, also can because of the impact that is subjected to environment temperature, can't judge that environment temperature causes or contact resistance is excessive and in the situation that the intensification that large electric current causes.
Summary of the invention
The present invention is in order to overcome above-mentioned deficiency; a kind of control method and controller of the intelligent socket based on temperature have been proposed; adopt a plurality of temperature sensors; be used for gathering different temperature spots; and the different protection domain of different Temperature Settings taked different safeguard measures; so that the load when nobody guards in the controlled socket of the protection of effective and safe prevents that fire from occuring.
Technical scheme of the present invention is:
A kind of control method of the intelligent socket based on temperature, this control method comprises the steps:
11) detect real time temperature in the socket housing;
12) this real time temperature and predefined alarm temperature are compared;
13) if real time temperature is higher than alarm temperature, then send sound and light alarm, otherwise, do not send sound and light alarm.
This control method also comprises the steps:
14) if described real time temperature is higher than the outage temperature, controlled socket is cut off the electricity supply, otherwise, controlled socket out-put supply.
This control method also comprises the steps:
31) detect the outer environment temperature of socket housing;
32) environment temperature and described real time temperature are compared;
33) if difference relatively greater than predefined warning temperature approach, is then sent sound and light alarm, otherwise, sound and light alarm do not sent.
This control method also comprises the steps:
34) if the difference of described comparison greater than predefined outage temperature approach, then described controlled socket is cut off the electricity supply, otherwise, controlled socket out-put supply.
Described alarm temperature is that 60 ℃, outage temperature are that 80 ℃, warning temperature approach are that 15 ℃, outage temperature approach are 25 ℃.
The present invention also provides a kind of controller of realizing above-mentioned control method:
A kind of controller of the intelligent socket based on temperature is equipped with the master control socket that is connected with power lead in the power lead with plug that comprises housing, draws in the housing, the housing, also comprises:
The first real time temperature sensor, it places in the socket housing for detection of real time temperature;
Microprocessor, an one input end connects the first real time temperature sensor, be used for gathering the signal of the first real time temperature sensor, and the value that this signal value is corresponding with predefined alarm temperature compares, if real time temperature is higher than alarm temperature, output alarm signal, otherwise, output alarm signal not;
Warning circuit is comprised of resistance R 21, triode Q3, LED 1, hummer SP, and the input end of warning circuit is connected sound and light alarm after receiving alerting signal with the warning output terminal of microprocessor;
The AC/DC change-over circuit, its input termination power lead, its output terminal is to microprocessor, and warning circuit is powered.
Further, also comprise: controlled socket and driving circuit, this driving circuit comprises resistance R 24, triode Q4, relay J, the contact switch K of relay J be connected to described power lead after controlled socket is connected, the input end of driving circuit is connected with the outage output terminal of microprocessor, if described real time temperature is higher than the outage temperature, cut off the output voltage of controlled socket, driving circuit is powered by the AC/DC change-over circuit.
Further, also comprise:
Environment temperature sensor;
The second real time temperature sensor;
Comparator circuit UA, its positive input terminal one tunnel through resistance R 11 to the power supply of AC/DC change-over circuit just, another road is through the power supply ground of environment temperature sensor to the AC/DC change-over circuit, its negative input end one tunnel through resistance R 13 to the power supply of AC/DC change-over circuit just, another road second real time temperature sensor is to the power supply ground of AC/DC change-over circuit, its output terminal connects the power supply ground of AC/DC change-over circuit through capacitor C 6, environment temperature sensor and the second real time temperature sensor have negative temperature coefficient;
Emitter follower circuit UB, its negative input end is connected with the movable end of potentiometer W1, the power supply that two stiff ends of potentiometer W1 connect respectively the AC/DC change-over circuit just with power supply ground, its positive input terminal one tunnel is connected through the output terminal of resistance R 15 with comparator circuit UA, another road is connected to the output terminal of emitter follower circuit UB through resistance R 16, the output terminal of emitter follower circuit UB is connected to an analog port of microprocessor through resistance R 17, if the difference that the temperature that environment temperature sensor and the second real time temperature sensor collect compares is greater than predefined warning temperature approach, the warning output terminal output alarm signal of described microprocessor, if this difference is greater than predefined outage temperature approach, the outage output terminal of described microprocessor is exported power-off signal;
Comparator circuit UA and emitter follower circuit UB are powered by the AC/DC change-over circuit;
Described housing is provided with the hollow cylinder that an end opens wide, the built-in secondary thermal insulation of this hollow cylinder hollow cylinder, secondary thermal insulation hollow cylinder is provided with outer toroid, accordingly, hollow cylinder is provided with the draw-in groove supporting with this outer toroid, leave for heat insulation space between the outer circumference surface of secondary thermal insulation hollow cylinder and the periphery of hollow cylinder, environment temperature sensor is arranged in the secondary thermal insulation hollow cylinder, and the second real time temperature sensor is close to housing.
Described environment temperature sensor is NPN transistor Q1, its base stage and the positive input terminal that is connected to comparator circuit UA after collector is connected, and emitter connects the power supply ground of AC/DC change-over circuit, parallel resistance R12 between base stage and the emitter; Described the second real time temperature sensor is NPN transistor Q2, its base stage and the negative input end that is connected to comparator circuit UA after collector is connected, and emitter connects the power supply ground of AC/DC change-over circuit, parallel resistance R14 between base stage and the emitter.
Described the first real time temperature sensor is thermistor.
Real-Time Monitoring socket soaking condition of the present invention is taked different safeguard measures to different temperature rises, has the high beneficial effect of safe and reliable, intelligent degree.
Description of drawings
Fig. 1 is electrical schematic diagram of the present invention.
Fig. 2 is the relevant partial structurtes schematic diagram of environment temperature sensor of the present invention.
Embodiment
A kind of control method of the intelligent socket based on temperature, this control method comprises the steps:
11) detect real time temperature in the socket housing;
12) this real time temperature and predefined alarm temperature are compared;
13) if real time temperature is higher than alarm temperature, then send sound and light alarm, otherwise, do not send sound and light alarm.
On the basis of above-mentioned steps, can also comprise:
14) if described real time temperature is higher than the outage temperature, controlled socket is cut off the electricity supply, otherwise, controlled socket out-put supply.
Wherein, alarm temperature be 60 ℃, the outage temperature be 80 ℃.
On the basis of above-mentioned steps, this control method can also comprise the steps: simultaneously
31) detect the outer environment temperature of socket housing;
32) environment temperature and described real time temperature are compared;
33) if difference relatively greater than predefined warning temperature approach, is then sent sound and light alarm, otherwise, sound and light alarm do not sent.
On the basis of above-mentioned steps, this control method can also comprise the steps: simultaneously
34) if the difference of described comparison greater than predefined outage temperature difference temperature, then described controlled socket is cut off the electricity supply, otherwise, controlled socket out-put supply.
Wherein, warning temperature approach is that 15 ℃, outage temperature difference temperature are 25 ℃.
Need to prove, alarm temperature, outage temperature, warning temperature approach, outage temperature difference temperature can arrange as required.
The present invention also provides a kind of controller of realizing above-mentioned control method, and existing the present invention is further illustrated by reference to the accompanying drawings:
As shown in Figure 1 and Figure 2, a kind of controller of the intelligent socket based on temperature, comprise housing 1, housing 1 is synthetic by first and second, in the power lead with plug that what show among Fig. 2 is second, draw in the housing 1, the housing 1 master control socket CZ1 and the controlled socket CZ2 that is connected with power lead is installed, controlled socket CZ2 can select a plurality of and in parallel, also comprises:
The first real time temperature sensor, it adopts thermistor RT, places socket housing 1 interior for detection of real time temperature, and this real time temperature is actually absolute environment temperature;
Microprocessor U3, model is KS652, the P01/ADC1 pin gathers the signal of the first real time temperature sensor, the value that this signal value is corresponding with predefined alarm temperature compares, if real time temperature is higher than alarm temperature, warning output terminal P13 pin output alarm high level signal, otherwise, output alarm signal not, resistance R 0 connects the P00/ADC0 pin of microprocessor U3, resistance R 0 is as the reference resistance not influenced by ambient temperature with respect to thermistor RT, the predefined alarm temperature of software obtains by resistance R 0, the power supply that the P16/VPP pin of microprocessor U3 connects the AC/DC change-over circuit through reset switch S1 as clear terminal one tunnel just, another road connects the power supply ground of AC/DC change-over circuit through resistance R 18;
As one of embodiment, the first real time temperature sensor can be selected the temperature sensor with built-in analog to digital conversion circuit, is directly inputted to the microprocessor that FPDP is arranged, and can omit resistance R 0;
As one of embodiment, the first real time temperature sensor also can be selected the temperature sensor of exportable analog voltage signal, this aanalogvoltage is input to the microprocessor of analog port, can omit resistance R 0;
Warning circuit, formed by resistance R 21, triode Q3, LED 1, hummer SP, the emitter of triode Q3 connects power supply ground, base stage connects the warning output terminal of microprocessor U3 through resistance R 21, collector is just connecing power supply through LED 1, hummer SP, the warning output terminal P13 pin output high level of microprocessor U3, turn-on transistor Q3 drives LED 1, hummer SP sound and light alarm;
The AC/DC change-over circuit, selected module AC/DC, L and the N phase line of its input termination power lead, its output terminal output+5V and+the 24V supply voltage, wherein+the 5V supply voltage powers to microprocessor U3 and warning circuit.
As expansion, except above-mentioned embodiment, the present invention can also comprise:
Controlled socket CZ2 and driving circuit, this driving circuit comprises triode Q4, LED 2, relay J, diode D10, resistance R 24, R25, the base stage of triode Q4 connects the outage output terminal P04/ADC4 pin of microprocessor U3 through resistance R 24, emitter connects the power supply ground of AC/DC change-over circuit, collector is LED 2 and the resistance R 25 through connecting respectively, diode D10, relay J meets AC/DC change-over circuit+24V, the contact switch K of relay J and the L and the N phase that are connected to power lead after controlled socket CZ2 connects control outage or the energising of controlled socket CZ2 by microprocessor U3.
As expansion, except above-mentioned embodiment, the present invention can also comprise:
Comparator circuit UA, its positive input terminal one tunnel through resistance R 11 to the power supply of the AC/DC change-over circuit of AC/DC change-over circuit just, another road is through the power supply ground of environment temperature sensor 3 to the AC/DC change-over circuit, its negative input end one tunnel through resistance R 13 to the power supply of AC/DC change-over circuit just, another road second real time temperature sensor is to the power supply ground of AC/DC change-over circuit, its output terminal connects the power supply ground of AC/DC change-over circuit through capacitor C 6, environment temperature sensor 3 and the second real time temperature sensor have negative temperature coefficient; Capacitor C 5 is connected in parallel on positive input terminal and the negative input end of comparator circuit UA;
Emitter follower circuit UB, its negative input end is connected with the movable end of potentiometer W1, the power supply that the stiff end of potentiometer W1 connects the AC/DC change-over circuit just with the power supply ground of AC/DC change-over circuit, its positive input terminal one tunnel is connected through the output terminal of resistance R 15 with comparator circuit UA, another road is connected to the output terminal of emitter follower circuit UB through resistance R 16, the output terminal of emitter follower circuit UB is connected to the P12/ADC5 pin of microprocessor U3 by network connectivity IN through resistance R 17;
The optional double operational integrated circuit of comparator circuit UA and emitter follower circuit UB by in the AC/DC change-over circuit+5V supply voltage power supply;
Housing 1 is provided with the hollow cylinder 11 that an end opens wide, these hollow cylinder 11 built-in secondary thermal insulation hollow cylinders 21, secondary thermal insulation hollow cylinder 21 is provided with outer toroid 22, accordingly, hollow cylinder 11 is provided with the draw-in groove supporting with this outer toroid 22, leave for heat insulation space between the outer circumference surface of secondary thermal insulation hollow cylinder 21 and the periphery of hollow cylinder 11, environment temperature sensor 3 is arranged in the secondary thermal insulation hollow cylinder 11, and the second real time temperature sensor is close to housing 1;
Except selecting common thermistor as the temperature sensor, the environment temperature sensor 3 of the present embodiment is NPN transistor Q1, its base stage and the positive input terminal that is connected to comparator circuit UA after collector is connected, emitter connects the power supply ground of AC/DC change-over circuit, parallel resistance R12 between base stage and the emitter; The second real time temperature sensor is NPN transistor Q2, its base stage and the negative input end that is connected to comparator circuit UA after collector is connected, and emitter connects the power supply ground of AC/DC change-over circuit, parallel resistance R14 between base stage and the emitter.
The present invention can select the several functions combination, environment temperature sensor 3, the second real time temperature sensor, comparator circuit UA, comparator circuit UB and relevant circuit are the inner relatively temperature rise Acquisition Circuit of environment of socket, the first real time temperature sensor is the inner absolute temperature rise Acquisition Circuit of socket, these two kinds of temperature rise Acquisition Circuit can with and/or the form choice for use, in like manner, warning circuit, driving circuit also can with and/or form select choice for use, these functional modules all can be finished by microprocessor U3 control, the selection of microprocessor U3 also can have Multiple Type, select the port that is complementary according to the model of temperature sensor, usually analog port need to be arranged.
The alarm temperature of the absolute environment of microprocessor U3 internal preset, outage temperature, the warning temperature approach of relative environment, outage temperature difference temperature, sound and light alarm when reaching at first alarm temperature or warning temperature approach, the output voltage that cuts off controlled socket when reaching at first outage temperature or outage temperature difference temperature.
As preferably, the alarm temperature of absolute environment is that 60 ℃, outage temperature are 80 ℃, and the warning temperature approach of environment is that 15 ℃, outage temperature difference temperature are 25 ℃ relatively, and these temperature can be made change as required.
Although be that the present invention is described further by the mode of illustrating and give an example here; but should be realized that; the present invention is not limited to the above-described embodiment and examples; it is illustrative that the description of preamble only is considered to; and it is nonrestrictive; those skilled in the art can make multiple conversion or modification, as long as no leaving the scope and spirit essence of establishing in this claim, all are considered as within protection scope of the present invention.
Claims (10)
1. the control method based on the intelligent socket of temperature is characterized in that, this control method comprises the steps:
11) detect real time temperature in the socket housing;
12) this real time temperature and predefined alarm temperature are compared;
13) if real time temperature is higher than alarm temperature, then send sound and light alarm, otherwise, do not send sound and light alarm.
2. the control method of the intelligent socket based on temperature as claimed in claim 1, it is characterized in that: this control method also comprises the steps:
14) if described real time temperature is higher than the outage temperature, controlled socket is cut off the electricity supply, otherwise, controlled socket out-put supply.
3. the control method of the intelligent socket based on temperature as claimed in claim 2, it is characterized in that: this control method also comprises the steps:
31) detect the outer environment temperature of socket housing;
32) environment temperature and described real time temperature are compared;
33) if difference relatively greater than predefined warning temperature approach, is then sent sound and light alarm, otherwise, sound and light alarm do not sent.
4. the control method of the intelligent socket based on temperature as claimed in claim 3, it is characterized in that: this control method also comprises the steps:
34) if the difference of described comparison greater than predefined outage temperature approach, then described controlled socket is cut off the electricity supply, otherwise, controlled socket out-put supply.
5. the control method of the intelligent socket based on temperature as claimed in claim 4 is characterized in that: described alarm temperature is that 60 ℃, outage temperature are that 80 ℃, warning temperature approach are that 15 ℃, outage temperature approach are 25 ℃.
6. controller based on the intelligent socket of temperature is equipped with the master control socket that is connected with power lead in the power lead with plug that comprises housing, draws in the housing, the housing, it is characterized in that, also comprises:
The first real time temperature sensor, it places in the socket housing for detection of real time temperature;
Microprocessor, an one input end connects the first real time temperature sensor, be used for gathering the signal of the first real time temperature sensor, and the value that this signal value is corresponding with predefined alarm temperature compares, if real time temperature is higher than alarm temperature, output alarm signal, otherwise, output alarm signal not;
Warning circuit is comprised of resistance R 21, triode Q3, LED 1, hummer SP, and the input end of warning circuit is connected sound and light alarm after receiving alerting signal with the warning output terminal of microprocessor;
The AC/DC change-over circuit, its input termination power lead, its output terminal is to microprocessor, and warning circuit is powered.
7. the controller of a kind of intelligent socket based on temperature as claimed in claim 6, it is characterized in that, also comprise: controlled socket and driving circuit, this driving circuit comprises resistance R 24, triode Q4, relay J, the contact switch K of relay J be connected to described power lead after controlled socket is connected, the input end of driving circuit is connected with the outage output terminal of microprocessor, if described real time temperature is higher than the outage temperature, cut off the output voltage of controlled socket, driving circuit is powered by the AC/DC change-over circuit.
8. the controller of a kind of intelligent socket based on temperature as claimed in claim 7 is characterized in that, also comprises:
Environment temperature sensor;
The second real time temperature sensor;
Comparator circuit UA, its positive input terminal one tunnel through resistance R 11 to the power supply of AC/DC change-over circuit just, another road is through the power supply ground of environment temperature sensor to the AC/DC change-over circuit, its negative input end one tunnel through resistance R 13 to the power supply of AC/DC change-over circuit just, another road second real time temperature sensor is to the power supply ground of AC/DC change-over circuit, its output terminal connects the power supply ground of AC/DC change-over circuit through capacitor C 6, environment temperature sensor and the second real time temperature sensor have negative temperature coefficient;
Emitter follower circuit UB, its negative input end is connected with the movable end of potentiometer W1, the power supply that two stiff ends of potentiometer W1 connect respectively the AC/DC change-over circuit just with power supply ground, its positive input terminal one tunnel is connected through the output terminal of resistance R 15 with comparator circuit UA, another road is connected to the output terminal of emitter follower circuit UB through resistance R 16, the output terminal of emitter follower circuit UB is connected to an analog port of microprocessor through resistance R 17, if the difference that the temperature that environment temperature sensor and the second real time temperature sensor collect compares is greater than predefined warning temperature approach, the warning output terminal output alarm signal of described microprocessor, if this difference is greater than predefined outage temperature approach, the outage output terminal of described microprocessor is exported power-off signal;
Comparator circuit UA and emitter follower circuit UB are powered by the AC/DC change-over circuit;
Described housing is provided with the hollow cylinder that an end opens wide, the built-in secondary thermal insulation of this hollow cylinder hollow cylinder, secondary thermal insulation hollow cylinder is provided with outer toroid, accordingly, hollow cylinder is provided with the draw-in groove supporting with this outer toroid, leave for heat insulation space between the outer circumference surface of secondary thermal insulation hollow cylinder and the periphery of hollow cylinder, environment temperature sensor is arranged in the secondary thermal insulation hollow cylinder, and the second real time temperature sensor is close to housing.
9. the controller of a kind of intelligent socket based on temperature as claimed in claim 8, it is characterized in that: described environment temperature sensor is NPN transistor Q1, its base stage and the positive input terminal that is connected to comparator circuit UA after collector is connected, emitter connects the power supply ground of AC/DC change-over circuit, parallel resistance R12 between base stage and the emitter; Described the second real time temperature sensor is NPN transistor Q2, its base stage and the negative input end that is connected to comparator circuit UA after collector is connected, and emitter connects the power supply ground of AC/DC change-over circuit, parallel resistance R14 between base stage and the emitter.
10. the controller of a kind of intelligent socket based on temperature as claimed in claim 6, it is characterized in that: described the first real time temperature sensor is thermistor.
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| CN201210421285.7A CN102929166B (en) | 2012-10-29 | 2012-10-29 | Temperature-based control method and controller of intelligent socket |
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| CN201210421285.7A CN102929166B (en) | 2012-10-29 | 2012-10-29 | Temperature-based control method and controller of intelligent socket |
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| CN102929166B CN102929166B (en) | 2014-11-05 |
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| CN103996936A (en) * | 2014-05-06 | 2014-08-20 | Tcl集团股份有限公司 | Intelligent socket and control method for intelligent socket |
| CN104868328A (en) * | 2015-06-08 | 2015-08-26 | 辽宁兴隆百货集团有限公司 | Temperature-control type fireproof safety socket |
| US20150262468A1 (en) * | 2014-03-13 | 2015-09-17 | Wei-Li YANG | Power socket temperature alarm device |
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| CN109028256A (en) * | 2018-07-16 | 2018-12-18 | 珠海格力电器股份有限公司 | Heating equipment and control device and method thereof |
| CN109412173A (en) * | 2018-10-31 | 2019-03-01 | 国网江苏省电力有限公司太仓市供电分公司 | A kind of parallel capacitor complete equipment overheat method for early warning based on the temperature difference |
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