CN217307262U - Arc light protection device based on wireless temperature measurement - Google Patents
Arc light protection device based on wireless temperature measurement Download PDFInfo
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- CN217307262U CN217307262U CN202220896052.1U CN202220896052U CN217307262U CN 217307262 U CN217307262 U CN 217307262U CN 202220896052 U CN202220896052 U CN 202220896052U CN 217307262 U CN217307262 U CN 217307262U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
The utility model relates to an arc light protection technical field, arc light protection device based on wireless temperature measurement is proposed, including the arc light probe that connects gradually, arc light detecting element and the control unit, still include alarm unit and a plurality of temperature monitoring unit, a plurality of temperature monitoring unit are used for the distribution to set up on power system's transmission line, every temperature monitoring unit all includes resistance R4, U3 is put to thermistor R5 and fortune, resistance R4's first end is used for connecting the 2.5V power, ground connection behind resistance R4's the second end series connection thermistor R5, the second end of U3's noninverting input end connecting resistance R4 is put to fortune, U3's output is put to fortune inverting input end connection fortune of U3, U3's output temperature signal is put to fortune, alarm unit is used for reporting to the police according to temperature signal. The arc light fault is pre-judged by detecting the temperature of multiple points, the fault hidden danger is timely found and eliminated before the arc light occurs, and the further expansion of the accident is avoided.
Description
Technical Field
The utility model relates to an electrical equipment technical field, it is specific, relate to arc light protection device based on wireless temperature measurement.
Background
The electric power system can cause arc light due to various short circuits, and the arc light can explode at the speed of 300m/s, present arc white light and generate high-temperature gas to destroy any substances in the process. The arc will always exist as long as the system is not powered off. To minimize the damage of arc light, it is necessary to cut off the arc light safely and quickly, so that the operator can be protected from being injured when the arc light fails, and the property loss can be reduced.
However, most of the current arc protection methods adopt an arc sensor and assist current detection as dual criteria for detection, and when the arc sensor detects ultraviolet light or visible light and detects that a current sudden change exceeds a set value through the current sensor, a power supply is cut off in time, so that sparks or burning of peripheral components due to a long-time arc discharge effect is avoided. Most of the existing methods can carry out power-off protection after arc light occurs, loss caused by the arc light is formed, and a large amount of manpower and material resources are consumed in the repair process.
SUMMERY OF THE UTILITY MODEL
The utility model provides an arc light protection device based on wireless temperature measurement through carrying out wireless temperature measurement to electric power system multiple spot, has realized the prejudgement that the arc light trouble takes place, in time discovers and the troubleshooting hidden danger before the arc light takes place, has avoided the further expansion of accident.
The technical scheme of the utility model as follows:
the arc protection device based on wireless temperature measurement comprises an arc probe, an arc detection unit and a control unit which are sequentially connected, wherein the control unit is further connected with a driving protection circuit, the arc protection device further comprises an alarm unit and a plurality of temperature monitoring units, the alarm unit is connected with the control unit, the temperature monitoring units are in communication connection with the control unit, the temperature monitoring units are distributed on a transmission line of a power system, each temperature monitoring unit comprises a resistor R4, a thermistor R5 and an operational amplifier U3, a first end of the resistor R4 is used for being connected with a 2.5V power supply, a second end of the resistor R4 is connected with the thermistor R5 in series and then grounded, a non-inverting input end of the operational amplifier U3 is connected with a second end of the resistor R4, an inverting input end of the operational amplifier U3 is connected with an output end of the operational amplifier U3, and an output end of the operational amplifier U3 outputs a temperature signal, the alarm unit is used for giving an alarm according to the temperature signal.
Further, the temperature monitoring unit further comprises a switch tube Q2, the grid of the switch tube Q2 receives a measurement signal through a resistor R6, the source of the switch tube Q2 is connected with a 2.5V power supply, and the drain of the switch tube Q2 is connected with the first end of the resistor R4.
Further, the non-inverting input end of the operational amplifier U3 is grounded through a capacitor C1, the gate of the switching tube Q2 is grounded through a capacitor C2, and a capacitor C3 is connected in parallel to the capacitor C2.
Further, the alarm unit includes emitting diode LED1, buzzer BL1 and triode Q3, triode Q3's base passes through resistance R8 and connects the control unit, VCC power is connected to triode Q3's projecting pole, triode Q3's collecting electrode is connected the positive pole of buzzer BL1, buzzer BL 1's negative pole ground connection, emitting diode LED 1's negative pole is connected the control unit, emitting diode LED 1's positive pole passes through resistance R9 and connects the VCC power.
Further, drive protection circuit includes opto-coupler U1, triode Q1 and relay K1, the input of opto-coupler U1 passes through resistance R1 and connects the control unit, ground connection behind series resistance R2, the R3 of output of opto-coupler U1 in proper order, resistance R2, R3's tie point are connected triode Q1's base, triode Q1's projecting pole ground connection, triode Q1's collecting electrode is connected relay K1's first input, 12V power is connected to relay K1's second input, relay K1's output is used for controlling the power system outage.
The utility model discloses a theory of operation and beneficial effect do:
the utility model discloses a transmission line temperature of a plurality of temperature monitoring units in to electric power systems such as block terminal, switch board, cubical switchboard carries out real-time supervision, changes the temperature into corresponding signal of telecommunication output, through the temperature signal who detects output, alarm unit work when the temperature surpasss the threshold value. The working principle of the temperature monitoring unit is that voltage is divided by the resistor R4 and the thermistor R5, and the resistance value of the thermistor R5 is increased along with the increase of the external temperature, so that the signal received by the non-inverting input end of the operational amplifier U3 is increased, and the temperature signal after output is correspondingly increased. The utility model discloses a temperature that detects the multiple spot realizes the prejudgement of arc light trouble, when the temperature is unusual, makes the staff in time overhaul electric power system's circuit, in time discovers and the troubleshooting hidden danger before the arc light takes place, has avoided the further expansion of accident.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
FIG. 2 is a circuit diagram of the temperature monitoring unit of the present invention;
fig. 3 is a circuit of the alarm unit of the present invention;
fig. 4 is a circuit diagram of the driving protection circuit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive work, are related to the scope of protection of the present invention.
Example 1
As shown in fig. 1, the present embodiment provides an arc protection device based on wireless temperature measurement, which includes an arc probe, an arc detection unit, and a control unit, which are connected in sequence, and further includes an alarm unit and a plurality of temperature monitoring units, where the plurality of temperature monitoring units are arranged in a power transmission line of a power system in a distributed manner, the control unit is wirelessly connected to the plurality of temperature monitoring units and is configured to receive the temperature signal, and the alarm unit and a driving protection circuit are connected to the control unit.
In the embodiment, the arc probe detects light rays by using spectral characteristics, and generates an arc signal if the spectral range of the light rays is within the detection spectral range; controlling an arc detection unit to convert the arc signal into an arc pulse signal; and the control unit receives the arc pulse signal sent by the arc detection unit, processes the arc pulse signal, outputs a driving signal to the driving protection circuit and disconnects all incoming line power supplies of the bus. On this basis, this embodiment still carries out real-time supervision to the temperature of the new way multiple spot of transmitting electricity in the electric power systems such as block terminal, cubical switchboard, switch board through the temperature monitoring unit to carry out the prejudgement that the arc light trouble takes place, when the temperature risees and surpasss the threshold value, the control unit reports to the police through alarm unit, and carries out electric power system's outage through drive protection circuit simultaneously.
As shown in fig. 2, each temperature monitoring unit includes a resistor R4, a thermistor R5 and an operational amplifier U3, a first end of the resistor R4 is used for connecting a 2.5V power supply, a second end of the resistor R4 is connected in series with the thermistor R5 and then grounded, a non-inverting input end of the operational amplifier U3 is connected with a second end of the resistor R4, an inverting input end of the operational amplifier U3 is connected with an output end of the operational amplifier U3, an output end of the operational amplifier U3 outputs a temperature signal, and the alarm unit is used for alarming according to the temperature signal.
Through the voltage division of the resistor R4 and the thermistor R5, the resistance value of the thermistor R5 is increased along with the increase of the external temperature, so that the signal received by the non-inverting input end of the operational amplifier U3 is increased, and the temperature signal after the output is correspondingly increased.
Further, the temperature monitoring unit further comprises a switch tube Q2, the grid of the switch tube Q2 receives a measurement signal through a resistor R6, the source of the switch tube Q2 is connected with a 2.5V power supply, and the drain of the switch tube Q2 is connected with the first end of the resistor R4.
The power consumption of the temperature monitoring unit can be further reduced by adding the switching tube Q2, the switching tube Q2 controls the working state of the thermistor R5 through the measuring signal, and when temperature monitoring is needed, the switching tube Q2 receives the measuring signal of high level, drives to be conducted and works normally. Each temperature monitoring unit further comprises a processor and a wireless communication module, the processor is used for providing a measuring signal, and data transmission between the temperature monitoring units and the control unit can be achieved through the wireless communication module.
Further, the non-inverting input end of the operational amplifier U3 is grounded through a capacitor C1, the gate of the switching tube Q2 is grounded through a capacitor C2, and a capacitor C3 is connected in parallel to the capacitor C2. The capacitors C1, C2 and C3 are used as filter capacitors, and accuracy of temperature monitoring is improved.
Further, as shown in FIG. 3,
the alarm unit includes emitting diode LED1, buzzer BL1 and triode Q3, triode Q3's base passes through resistance R8 and connects the control unit, VCC power is connected to triode Q3's projecting pole, triode Q3's collecting electrode is connected buzzer BL 1's positive pole, buzzer BL 1's negative pole ground connection, emitting diode LED 1's negative pole is connected the control unit, emitting diode LED 1's positive pole passes through resistance R9 and connects the VCC power.
When the control unit receives a temperature signal exceeding a threshold value, the control unit outputs a low level signal to both the base of the triode Q3 and the cathode of the light-emitting diode LED1 to drive the light-emitting diode LED1 to give out light for alarming, and drives the buzzer BL1 to give out sound for alarming through the triode Q3, so that a worker is informed of a temperature fault of an electric power system, and the worker can timely receive a fault signal and overhaul.
Further, as shown in FIG. 4,
drive protection circuit includes opto-coupler U1, triode Q1 and relay K1, the input of opto-coupler U1 passes through resistance R1 and connects the control unit, ground connection behind series resistance R2, the R3 of output in proper order of opto-coupler U1, resistance R2, R3's tie point are connected triode Q1's base, triode Q1's projecting pole ground connection, triode Q1's collecting electrode is connected relay K1's first input, 12V power is connected to relay K1's second input, relay K1's output is used for controlling the outage of electric power system.
When power system took place the arc light, ambient temperature rose, and temperature monitoring unit turned into the signal of telecommunication with the temperature and exported for the control unit, and when the control unit detected high temperature signal, the control was exported for the drive signal of opto-coupler U1 low level, and opto-coupler U1 switches on, and further drive triode Q1 switches on, makes relay K1's input form the route, and the relay action breaks off power system's power supply, has played the effect of arc light protection.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The arc protection device based on wireless temperature measurement comprises an arc probe, an arc detection unit and a control unit which are connected in sequence, wherein the control unit is also connected with a driving protection circuit, and the arc protection device is characterized by further comprising an alarm unit and a plurality of temperature monitoring units, the alarm unit is connected with the control unit, the temperature monitoring units are all in wireless connection with the control unit, the temperature monitoring units are distributed and arranged on a transmission line of a power system, each temperature monitoring unit comprises a resistor R4, a thermistor R5 and an operational amplifier U3, a first end of the resistor R4 is used for being connected with a 2.5V power supply, a second end of the resistor R4 is connected with the thermistor R5 in series and then is grounded, a non-inverting input end of the operational amplifier U3 is connected with a second end of the resistor R4, an inverting input end of the operational amplifier U3 is connected with an output end of the operational amplifier U3, and an output end of the operational amplifier U3 outputs a temperature signal, the alarm unit is used for giving an alarm according to the temperature signal.
2. The arc protection device based on wireless temperature measurement according to claim 1, wherein the temperature monitoring unit further comprises a switch tube Q2, the gate of the switch tube Q2 receives the measurement signal through a resistor R6, the source of the switch tube Q2 is connected with a 2.5V power supply, and the drain of the switch tube Q2 is connected with the first end of the resistor R4.
3. The arc protection device based on wireless temperature measurement of claim 2, wherein the non-inverting input terminal of the operational amplifier U3 is further grounded through a capacitor C1, the gate of the switching tube Q2 is further grounded through a capacitor C2, and a capacitor C3 is connected in parallel to the capacitor C2.
4. An arc protection device based on wireless temperature measurement, according to claim 1, wherein the alarm unit comprises a light emitting diode LED1, a buzzer BL1 and a triode Q3, the base of the triode Q3 is connected to the control unit through a resistor R8, the emitter of the triode Q3 is connected to a VCC power supply, the collector of the triode Q3 is connected to the positive electrode of the buzzer BL1, the negative electrode of the buzzer BL1 is grounded, the cathode of the light emitting diode LED1 is connected to the control unit, and the anode of the light emitting diode LED1 is connected to the VCC power supply through a resistor R9.
5. The arc protection device based on wireless temperature measurement as claimed in claim 1, wherein the driving protection circuit comprises an optocoupler U1, a triode Q1 and a relay K1, an input end of the optocoupler U1 is connected with the control unit through a resistor R1, an output end of the optocoupler U1 is sequentially connected with resistors R2 and R3 in series and then grounded, a connection point of the resistors R2 and R3 is connected with a base of the triode Q1, an emitter of the triode Q1 is grounded, a collector of the triode Q1 is connected with a first input end of the relay K1, a second input end of the relay K1 is connected with a 12V power supply, and an output end of the relay K1 is used for controlling power-off of a power system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220896052.1U CN217307262U (en) | 2022-04-18 | 2022-04-18 | Arc light protection device based on wireless temperature measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220896052.1U CN217307262U (en) | 2022-04-18 | 2022-04-18 | Arc light protection device based on wireless temperature measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217307262U true CN217307262U (en) | 2022-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220896052.1U Active CN217307262U (en) | 2022-04-18 | 2022-04-18 | Arc light protection device based on wireless temperature measurement |
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| Country | Link |
|---|---|
| CN (1) | CN217307262U (en) |
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- 2022-04-18 CN CN202220896052.1U patent/CN217307262U/en active Active
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