CN113739925B - Online temperature detection and simulation auxiliary equipment of transformer substation - Google Patents

Online temperature detection and simulation auxiliary equipment of transformer substation Download PDF

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Publication number
CN113739925B
CN113739925B CN202110673196.0A CN202110673196A CN113739925B CN 113739925 B CN113739925 B CN 113739925B CN 202110673196 A CN202110673196 A CN 202110673196A CN 113739925 B CN113739925 B CN 113739925B
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capacitor
respectively connected
resistor
gnd
circuit
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CN113739925A (en
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崔兴源
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Beijing Yuanfang Technology Co ltd
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Beijing Yuanfang Technology Co ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/0096—Radiation pyrometry, e.g. infrared or optical thermometry for measuring wires, electrical contacts or electronic systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
    • 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

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  • Engineering & Computer Science (AREA)
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  • Computer Hardware Design (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Business, Economics & Management (AREA)
  • Evolutionary Computation (AREA)
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  • General Engineering & Computer Science (AREA)
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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

An online temperature detection and simulation auxiliary device for a transformer substation belongs to the technical field of detection, and particularly relates to an online temperature detection and simulation auxiliary device for a transformer substation. The invention provides on-line temperature detection and simulation auxiliary equipment for a transformer substation. The invention comprises a microprocessor circuit, a cradle head control circuit, an infrared temperature measurement circuit, a wireless configuration circuit, a power supply conversion circuit and a GPRS remote communication circuit, and is characterized in that a signal transmission port of the microprocessor circuit is respectively connected with a control signal input port of the cradle head control circuit, a detection signal output port of the infrared temperature measurement circuit, a signal transmission port of the wireless configuration circuit and a signal transmission port of the GPRS remote communication circuit, and an electric energy output port of the power supply conversion circuit is respectively connected with a power supply port of the microprocessor circuit, a power supply port of the cradle head control circuit, a power supply port of the infrared temperature measurement circuit, a power supply port of the wireless configuration circuit and a power supply port of the GPRS remote communication circuit.

Description

Online temperature detection and simulation auxiliary equipment of transformer substation
Technical Field
The invention belongs to the technical field of detection, and particularly relates to online temperature detection and simulation auxiliary equipment for a transformer substation.
Background
The transformer substation is an important component part of the power transmission system and is also a link which is easy to generate faults. The local temperature rise of the faulty equipment in the substation usually occurs, so the temperature detection of various equipment in the substation is an important method for judging whether the fault and the fault point position occur. At present, some physical electrical parameters of electrical equipment in normal operation and fault states, including current, voltage, frequency, harmonic waves and the like, can be obtained through simulation of a transformer substation, but accurate temperature information of each equipment in normal operation and fault states is difficult to obtain through simulation, and if the temperature information exists, a simulation model is enabled to be more approximate to actual equipment, and the obtained simulation data is more accurate.
Disclosure of Invention
The invention aims at the problems and provides online temperature detection and simulation auxiliary equipment for a transformer substation.
The invention adopts the following technical scheme that the infrared temperature measuring device comprises a microprocessor circuit, a cradle head control circuit, an infrared temperature measuring circuit, a wireless configuration circuit, a power supply conversion circuit and a GPRS remote communication circuit, and is characterized in that a signal transmission port of the microprocessor circuit is respectively connected with a control signal input port of the cradle head control circuit, a detection signal output port of the infrared temperature measuring circuit, a signal transmission port of the wireless configuration circuit and a signal transmission port of the GPRS remote communication circuit, an electric energy output port of the power supply conversion circuit is respectively connected with a power supply port of the microprocessor circuit, a power supply port of the cradle head control circuit, a power supply port of the infrared temperature measuring circuit, a power supply port of the wireless configuration circuit and a power supply port of the GPRS remote communication circuit, a detection signal input port of the infrared temperature measuring circuit is connected with a detection signal output port of an infrared temperature measuring probe, the infrared temperature measuring probe is arranged on the cradle head, and the control signal output port of the cradle head control circuit is connected with a control signal input port of the cradle head.
As a preferred scheme, the invention further comprises a power line induction power supply circuit, wherein the power output port of the power line induction power supply circuit is connected with the power input port of the power supply conversion circuit.
As a preferable scheme, the invention further comprises a buzzing alarm circuit, wherein a control signal input port of the buzzing alarm circuit is connected with a control signal output port of the microprocessor circuit.
As another preferable scheme, the cradle head control circuit comprises welding points P7, P11, P14 and P15, wherein P7 is respectively connected with the positive electrode of a capacitor C14, the positive electrode of a capacitor C19, one end of a capacitor C21, 24V and one end of a magnetic bead L1, the other end of L1 is respectively connected with the positive electrode of a capacitor C22, one end of a capacitor C23 and +24V, P11 is respectively connected with the negative electrode of C14, the negative electrode of C19, the other end of C21 and one end of a magnetic bead L3, and the other end of L3 is respectively connected with the negative electrode of a capacitor C22, the other end of a capacitor C23 and GND;
the P14 is respectively connected with one end of a TVS2 pipe and one end of a TVS21 pipe, the other end of the TVS2 pipe is respectively connected with one end of a P15 pipe and one end of a TVS23 pipe, the other end of the TVS21 pipe is respectively connected with one end of a resistor R11, one end of a resistor R10 and 7 pins of an RS485_ B, SP3485EN-L/TR chip U7, the other end of the R10 is connected with GND, the other end of the TVS3 pipe is respectively connected with the other end of the resistor R11, one end of the resistor R12 and 6 pins of the RS485_ A, SP3485EN-L/TR chip U7, and the other end of the R12 is connected with +3.3V;
the 5 pin of U7 is connected with one end of a capacitor C53, one end of a capacitor C54 and GND respectively, the other end of the capacitor C53 is connected with the 8 pin of U7, the other end of the capacitor C54 and +3.3V respectively, the 4 pin of U7 is connected with PA9, the 2 pin and the 3 pin of U7 are connected with PA8, and the 1 pin of U7 is connected with PA10; pins 1 and 2 of the connector P10 are respectively connected with RS485B, RS485A correspondingly. __
As another preferable scheme, the infrared temperature measuring circuit comprises welding points P9, P12, P13 and P16, wherein P9 is respectively connected with one end of a capacitor C24, the positive electrode of the capacitor C28 and one end of a magnetic bead L2, the other end of the L2 is connected with +24V, P12 is respectively connected with the other end of the capacitor C24, the negative electrode of the capacitor C28 and one end of the magnetic bead L4, and the other end of the L4 is connected with GND;
p13 is connected with one end of a resistor R17, one end of a resistor R34 and the cathode of a voltage stabilizing tube D10 through a resistor R15, the anode of the D10 is connected with one end of a capacitor C48 and GND respectively, and the other end of the R17 is connected with the other end of the capacitor C48 and ADC0 respectively.
As another preferable scheme, the power line induction power supply circuit comprises a transformer T1A, wherein one end of the secondary side of the transformer T1A is respectively connected with one end of a capacitor C47, one end of a capacitor C51 and one end of the input end of a rectifier bridge D9, the other end of the capacitor C47 is respectively connected with the other end of the secondary side of the transformer T1A, one end of a capacitor C49 and the other end of the input end of the D9, and the other end of the capacitor C49 is respectively connected with the other ends of FG and C51;
the positive electrode of the output end of the D9 is respectively connected with one end of a resistor R13 and the collector electrode of an NPN triode Q3, the base electrode of the Q3 is respectively connected with the other end of the R13 and the collector electrode of an NPN triode Q4, the emitter electrode of the Q4 is connected with the cathode of a voltage stabilizing tube D11, and the anode of the D11 is respectively connected with the negative electrode of the output end of the D9, one end of a resistor R19, the negative electrode of a capacitor C45, one end of a capacitor C46, the negative electrode of a storage battery BT1, the anode of a voltage stabilizing tube D12, one end of a resistor R35, one end of a capacitor C52 and GND;
the base electrode of the Q4 is respectively connected with the other end of the R19 and one end of the resistor R14, the other end of the R14 is respectively connected with the emitter electrode of the Q3, the positive electrode of the C45, the other end of the C46, the positive electrode of the BT1, one end of the resistor R16, 24V and the external power input end CH1, and the external power input end DC005 is connected with GND;
the other end of R16 is respectively connected with the cathode of D12, the other end of R35 and one end of resistor R18, and the other end of R18 is respectively connected with the other end of C52 and ADC 1.
As another preferable scheme, the wireless configuration circuit adopts a smart-TR chip U5, 1 pin of the U5 is respectively connected with +3.3V, one end of a capacitor C29 and the positive electrode of the capacitor C30, the negative electrode of the C30 is respectively connected with GND and the other end of the C29, 2-5 pins of the U5 are respectively correspondingly connected with PA2, PA3, PA4 and PA5, 6 pins of the U5 are respectively connected with GND and the 2 pin of a connector J2, and 7 pins of the U5 are connected with 1 pin of the J2.
As another preferable scheme, the buzzer alarm circuit comprises a resistor R38, one end of the R38 is connected with a PA6, the other end of the R38 is respectively connected with one end of a resistor R39 and a base electrode of an NPN triode Q5, an emitter electrode of the Q5 is respectively connected with the other end of the R39 and GND, and a collector electrode of the Q5 is connected with +24V through a buzzer BEEP.
As another preferable scheme, the power conversion circuit comprises an LM2576SX-5.0 chip U8 and an AMS1117-3.3 chip U11, wherein the 1 pin of the U8 is respectively connected with +24V, the positive electrode of a capacitor C55 and one end of a capacitor C57, the negative electrode of the C55 is respectively connected with GND, the other end of the C57, the 5 pin of the U8 and the 3 pin of the U8, the 2 pin of the U8 is respectively connected with one end of an inductor L5 and the cathode of a diode D13, the other end of the L5 is respectively connected with the positive electrode of a capacitor C56, one end of a capacitor C58 and +5V, and the anode of the D13 is respectively connected with the negative electrode of the C56, the other end of the C58 and the GND; 4 feet of U8 are connected with +5V;
the 3 feet of the U11 are respectively connected with +5V, one end of a capacitor C62 and the positive electrode of a capacitor C61, the 1 foot of the U11 is respectively connected with the other end of the C62, the negative electrode of the C61, one end of a capacitor C59, the negative electrode of the capacitor C60 and GND, and the other end of the C59 is respectively connected with the 2 feet of the U11, the 4 feet of the U11, the positive electrode of the C60 and +3.3V.
As another preferable scheme, the GPRS telecommunication circuit of the invention comprises a diode D14, the anode of D14 is connected with +5v_sim800, and the cathode of D14 is connected with +4.2v through a diode D15;
+4.2V is connected with the cathode of the voltage stabilizing tube ZD2, the positive electrode of the capacitor C63-C66, one end of the capacitor C67 and one end of the capacitor C68 respectively, and the anode of the ZD2 is connected with the negative electrode of the capacitor C63-C66, the other end of the capacitor C67 and the other end of the capacitor C68 respectively;
the PA11 is respectively connected with one end of a resistor R44 and the base electrode of an NPN triode Q6 through a resistor R43, the collector electrode of the Q6 is connected with the KEY, and the emitter electrode of the Q6 is respectively connected with the other ends of the GND and the R44;
the SIM 800-TXD is respectively connected with the PC11 and the 1 pin of the connector P17 through a resistor R41, the SIM 800-RXD is respectively connected with one end of a resistor R45 and one end of a resistor R42, the other end of the resistor R42 is respectively connected with the 2 pins of the PC10 and the P17, and the other end of the resistor R45 is respectively connected with the GND and the 3 pins of the P17;
the 1 and 2 pins of the SIM800C chip U12 are correspondingly connected with the SIM800 TXD and the SIM800 RXD respectively, the 6 pin of the U12 is connected with the PA15 through a resistor R53, the 8 pin of the U12 is connected with the GND, the 13 pin of the U12 is connected with the GND, and the 15 to 18 pins of the U12 are correspondingly connected with the SIM_DATA, the SIM_CLK, the SIM_RST and the SIM_VDD respectively, and the 19 and 21 pins of the U12 are connected with the GND; the 24-27 pins of the U12 are correspondingly connected with the USB_BUS, the USB_DP, the USB_DN and the GND respectively, and the 28 pin of the U12 is connected with the GND through a capacitor C70; pins 30, 31 and 33 of U12 are connected with GND, pin 1 of a 32-pin connector J3 of U12 is connected with GND of pin 2 of J3; pin 34, 35 of U12 are connected with +4.2V, pin 36, 37 of U12 are connected with GND, pin 39 of U12 is connected with KEY, pin 41 of U12 is connected with GND through resistor R50 and LED D17 in turn, and pin 42 of U12 is connected with PA12 through resistor R51;
the +5V is respectively connected with the cathode of the diode D16 and the 8 pin of the HFD4/5-S relay K2, the anode of the D16 is respectively connected with the 1 pin of the K2 and the collector of the NPN triode Q7, the base electrode of the Q7 is respectively connected with one end of the resistor R48 and one end of the resistor R49, the other end of the R48 is connected with the PA7, and the other end of the R49 is respectively connected with the emitters of GND and Q7;
the pins 2 and 3 of K2 are respectively connected with +5V_SIM800 and +5V correspondingly;
the 1 foot of U14 connects GND, the 2 foot of U14 links to each other with electric capacity C72 one end, SIM_VDD, SMF05C chip U17's 1 foot respectively, the C72 other end links to each other with GND, U17's 2 foot respectively, U17's 4 foot links to each other with U14's 4 foot, resistance R56 one end respectively, U17's 5 foot links to each other with U14's 5 foot, resistance R55 one end respectively, U17's 6 foot links to each other with U14's 6 foot, resistance R54 one end respectively, the R54 other end links to each other with SIM_CLK, electric capacity C75 one end respectively, the R55 other end links to each other with SIM_DATA, electric capacity C74 one end respectively, the R56 other end links to each other with SIM_RST, electric capacity C73 one end respectively, the C73 other end links to each other with GND, the C74 other end, the C75 other end respectively.
As another preferable scheme, the microprocessor circuit comprises an STM32F407ZET6 chip U4, wherein pins 34-37, 40-43, 100-105, 109, 110, 46 and 47 of the U4 are respectively and correspondingly connected with ADC0, ADC1, PA2, PA 3-PA 12, TMS, TCK, PA, PB0 and PB1, and pin 48 of the U4 is connected with GND through a resistor R36;
pins 133 to 137, 139, 140, 69, 70, 73 to 76, 26 to 29, 44, 45, 96 to 99, 111 to 113, 7 to 9, 114, 115, 119, 122, 77 to 82, 85, 86 of U4 are correspondingly connected with PB3 to PB15, PC0 to PC15, D2, D3, NOE, NWE, D, 13 to D15, A16 to A18, D0, D1 respectively, and pin 138 of U4 is connected with GND through resistor R1;
pins 31 and 33 of U4 are respectively connected with GND and VREF+ correspondingly;
pin 106 of U4 is connected with GND through a capacitor C16, pin 71 of U4 is connected with GND through a capacitor C17, and pins 32 and 6 of U4 are correspondingly connected with VREF+ and +3.3V respectively; the 25 feet of U4 are respectively connected with NEST, one end of a capacitor C7, one end of a restarting button SW1 and one end of a resistor R3, the other end of R3 is connected with +3.3V, and the other end of SW1 is respectively connected with the other end of C7 and GND;
pins 127, 125, 90-87, 57-53, 50, 15-10, 68-63, 60-58, 142 and 141 of U4 are correspondingly connected with NE4, NE3, A15-A0, D12-D4, NBL1 and NBL0 respectively;
pins 1 to 4 of the connector P1 are correspondingly connected with +3.3V, TMS, TCK, GND respectively, +3.3V is connected with one end of a capacitor C15, one end of a capacitor C25, one end of a capacitor C26, one end of a capacitor C3, one end of a capacitor C27, one end of a capacitor C5, one end of a capacitor C6, one end of a capacitor C31 and one end of a capacitor C32 respectively, and GND is connected with the other end of the capacitor C15, the other end of the capacitor C25, the other end of the capacitor C26, the other end of the capacitor C3, the other end of the capacitor C27, the other end of the capacitor C5, the other end of the capacitor C6, the other end of the capacitor C31 and the other end of the capacitor C32 respectively;
pins 5-4, 44-42, 27-18, 23 and 28 of the IS62WV51216 chip U13 are respectively and correspondingly connected with pins A0-A4, A18-A16, A13-A15, A5, A7-A11, A6 and A12, pins 11 of the U13 are respectively connected with +3.3V, one end of a capacitor C76 and one end of a capacitor C77, and pins 34 of the U13 are respectively connected with the other ends of GND, C76 and C77;
the 6 pin of U13 is respectively connected with one end of NE3 and one end of resistor R59, the other end of R59 is connected with +3.3V, and the 17, 41, 39, 40, 7-10, 13-16, 29-32 and 35-38 pins of U13 are respectively correspondingly connected with NEW, NOE, NBL, NBL1 and D0-D15;
1-4 pins of the 24C256K chip U16 are connected with GND, 5 pins of the U16 are respectively connected with PB4 and one end of a resistor R58, the other end of the R58 is respectively connected with one end of a resistor R57, +3.3V, one end of a capacitor C71 and 8 pins of the U16, the other end of the C71 is respectively connected with 7 pins of the U16 and GND, and the other end of the R57 is respectively connected with 6 pins of PB3 and U16;
VREF+ is respectively connected with one end of a capacitor C78, the positive electrode of the capacitor C69 and one end of a resistor R52, the other end of the capacitor C78 is respectively connected with the negative electrodes of GND and the capacitor C69, and the other end of the resistor R52 is connected with +3.3V.
The invention has the beneficial effects that.
The microprocessor circuit controls the movement of the cradle head, acquires signals of the infrared temperature measuring probe, the cradle head drives the temperature measuring probe to finish multi-point position temperature measurement, the wireless configuration circuit is used for receiving setting information, the power supply conversion circuit supplies power for all parts, and the GPRS remote communication circuit finishes remote transmission of information. The invention can realize real-time uninterrupted detection, greatly reduce the occurrence probability of accidents and greatly reduce the maintenance workload of detection equipment. Meanwhile, the real temperature parameters detected on site are fed back to the simulation model of the transformer substation, so that the simulation model is more similar to an actual system, and the precision of a simulation result is improved.
Drawings
The invention is further described below with reference to the drawings and the detailed description. The scope of the present invention is not limited to the following description.
Fig. 1 is a schematic diagram of a pan/tilt control circuit according to the present invention.
FIG. 2 is a schematic diagram of an infrared thermometry circuit of the present invention.
Fig. 3 is a schematic diagram of a power line inductive power supply circuit of the present invention.
Fig. 4 is a schematic diagram of a wireless configuration circuit of the present invention.
Fig. 5 is a schematic diagram of a buzzer alarm and power conversion circuit in accordance with the present invention.
Figure 6 is a schematic diagram of the GPRS telecommunication circuit of the present invention.
Fig. 7 is a schematic diagram of a microprocessor circuit according to the present invention.
FIG. 8 is a schematic diagram of coordinates of a heating spot and neighboring spots according to the present invention.
Fig. 9 is a schematic diagram of the operation of the present invention.
Detailed Description
As shown in the figure, the remote control device comprises a microprocessor circuit, a holder control circuit, an infrared temperature measurement circuit, a wireless configuration circuit, a power supply conversion circuit and a GPRS remote communication circuit, wherein a signal transmission port of the microprocessor circuit is respectively connected with a control signal input port of the holder control circuit, a detection signal output port of the infrared temperature measurement circuit, a signal transmission port of the wireless configuration circuit and a signal transmission port of the GPRS remote communication circuit, and an electric energy output port of the power supply conversion circuit is respectively connected with a power supply port of the microprocessor circuit, a power supply port of the holder control circuit, a power supply port of the infrared temperature measurement circuit, a power supply port of the wireless configuration circuit and a power supply port of the GPRS remote communication circuit.
The power supply circuit also comprises a power line induction power supply circuit, and an electric energy output port of the power line induction power supply circuit is connected with an electric energy input port of the power supply conversion circuit.
The control signal input port of the buzzing alarm circuit is connected with the control signal output port of the microprocessor circuit.
The cradle head control circuit comprises welding points P7, P11, P14 and P15, wherein P7 is respectively connected with the positive electrode of a capacitor C14, the positive electrode of a capacitor C19, one end of a capacitor C21 and 24V, one end of a magnetic bead L1, the other end of the capacitor L1 is respectively connected with the positive electrode of the capacitor C22, one end of the capacitor C23 and +24V, P11 is respectively connected with the negative electrode of the capacitor C14, the negative electrode of the capacitor C19, the other end of the capacitor C21 and one end of the magnetic bead L3, and the other end of the L3 is respectively connected with the negative electrode of the capacitor C22, the other end of the capacitor C23 and GND;
the P14 is respectively connected with one end of a TVS2 pipe and one end of a TVS21 pipe, the other end of the TVS2 pipe is respectively connected with one end of a P15 pipe and one end of a TVS23 pipe, the other end of the TVS21 pipe is respectively connected with one end of a resistor R11, one end of a resistor R10 and 7 pins of an RS485_ B, SP3485EN-L/TR chip U7, the other end of the R10 is connected with GND, the other end of the TVS3 pipe is respectively connected with the other end of the resistor R11, one end of the resistor R12 and 6 pins of the RS485_ A, SP3485EN-L/TR chip U7, and the other end of the R12 is connected with +3.3V;
the 5 pin of U7 is connected with one end of a capacitor C53, one end of a capacitor C54 and GND respectively, the other end of the capacitor C53 is connected with the 8 pin of U7, the other end of the capacitor C54 and +3.3V respectively, the 4 pin of U7 is connected with PA9, the 2 pin and the 3 pin of U7 are connected with PA8, and the 1 pin of U7 is connected with PA10; pins 1 and 2 of the connector P10 are respectively connected with the corresponding RS485_ B, RS 485_A.
And P14 and P15 of the cradle head control circuit are connected with an RS485_B port and an RS485_A port (RS 485 communication interface) of the BLS3040 cradle head.
The cradle head control circuit controls the cradle head to complete rotation and pitching movement through a circuit formed by components such as an SP3485EN-L/TR communication module and the like by a CPU. The model of the cradle head can be BLS3040-YL (angle display control type), the horizontal rotation angle range is 0-360 degrees, and the pitching angle range is-85-20 degrees.
The infrared temperature measuring circuit comprises welding points P9, P12, P13 and P16, wherein P9 is respectively connected with one end of a capacitor C24, the positive electrode of a capacitor C28 and one end of a magnetic bead L2, the other end of the L2 is connected with +24V, P12 is respectively connected with the other end of the capacitor C24, the negative electrode of the capacitor C28 and one end of the magnetic bead L4, and the other end of the L4 is connected with GND;
p13 is connected with one end of a resistor R17, one end of a resistor R34 and the cathode of a voltage stabilizing tube D10 through a resistor R15, the anode of the D10 is connected with one end of a capacitor C48 and GND respectively, and the other end of the R17 is connected with the other end of the capacitor C48 and ADC0 respectively.
P9 and P12 are connected with the power input of the TD-01B infrared probe; p13 and P16 are connected with the signal output of the TD-01B infrared probe.
The infrared temperature measuring circuit changes the temperature signal detected by the infrared temperature measuring probe into a voltage signal and inputs the voltage signal to the CPU. The model of the infrared temperature measuring probe can be TD-01B, and the temperature detection range is 0-100 ℃.
The power line induction power supply circuit comprises a transformer T1A, wherein one end of the secondary side of the T1A is respectively connected with one end of a capacitor C47, one end of a capacitor C51 and one end of the input end of a rectifier bridge D9, the other end of the C47 is respectively connected with the other end of the secondary side of the T1A, one end of a capacitor C49 and the other end of the input end of the D9, and the other end of the C49 is respectively connected with the other ends of FG and C51;
the positive electrode of the output end of the D9 is respectively connected with one end of a resistor R13 and the collector electrode of an NPN triode Q3, the base electrode of the Q3 is respectively connected with the other end of the R13 and the collector electrode of an NPN triode Q4, the emitter electrode of the Q4 is connected with the cathode of a voltage stabilizing tube D11, and the anode of the D11 is respectively connected with the negative electrode of the output end of the D9, one end of a resistor R19, the negative electrode of a capacitor C45, one end of a capacitor C46, the negative electrode of a storage battery BT1, the anode of a voltage stabilizing tube D12, one end of a resistor R35, one end of a capacitor C52 and GND;
the base electrode of the Q4 is respectively connected with the other end of the R19 and one end of the resistor R14, the other end of the R14 is respectively connected with the emitter electrode of the Q3, the positive electrode of the C45, the other end of the C46, the positive electrode of the BT1, one end of the resistor R16, 24V and the external power input end CH1, and the external power input end DC005 is connected with GND;
the other end of R16 is respectively connected with the cathode of D12, the other end of R35 and one end of resistor R18, and the other end of R18 is respectively connected with the other end of C52 and ADC 1.
The material of the magnetic core of the transformer T1A can be 1K107 nanometer amorphous material, 80-50-25 x 3 in the figure represent the outer diameter-inner diameter-height of the annular magnetic core and 3 magnetic cores are used together to increase the sectional area. When the transformer is used, a power line passes through the annular magnetic core of the transformer T1A, and a coil wound on the annular magnetic core (the right coil of the T1A in the figure) induces current for power supply.
The power line induction current supply converts alternating current energy of a power supply bus into 24V direct current energy through a transformer and a rectifying circuit to supply power to the circuit, the circuit can be supplied with power through an external 24V direct current power supply, and the circuit can be supplied with power through a 24V/7.5AH lead-acid storage battery. The lead-acid storage battery power supply mode can become a supplementary power supply mode of the first two power supply modes, namely one of the first two power supply modes supplies power to the circuit and simultaneously charges the lead-acid storage battery, and when the first two power supply modes are interrupted, the lead-acid storage battery power supply mode can realize seamless switching, so that the reliability is greatly improved. By adopting the multi-source complementary power supply mode, the power line induction current power supply mode can take electricity on site, so that the device can be flexibly arranged in a transformer substation. And the device comprises an energy storage unit, so that the device can still work normally even if the power system is powered off, and the running reliability is improved.
The wireless configuration circuit adopts the intelligent-TRhttps://item.taobao.com/item.htmspm＝ a230r.1.14.21.6b69f4643KiGMS&id＝627419913835&ns＝1&abbucket＝10#detail) The 1 pin of the chip U5, U5 is respectively connected with +3.3V, one end of a capacitor C29 and the positive electrode of a capacitor C30, the negative electrode of the C30 is respectively connected with GND and the other end of the capacitor C29, the 2-5 pins of the U5 are respectively correspondingly connected with PA2, PA3, PA4 and PA5, the 6 pin of the U5 is respectively connected with GND and the 2 pin of a connector J2, and the 7 pin of the U5 is connected with the 1 pin of the J2.
The wireless configuration circuit is used for writing various set physical quantities including detection period, temperature threshold value out of limit and the like into the CPU in a long-distance wireless mode through the computer and the wireless 433MHz communication module.
The buzzer alarm circuit comprises a resistor R38, one end of the resistor R38 is connected with a PA6, the other end of the resistor R38 is respectively connected with one end of a resistor R39 and a base electrode of an NPN triode Q5, an emitter electrode of the Q5 is respectively connected with the other end of the resistor R39 and GND, and a collector electrode of the Q5 is connected with +24V through a buzzer BEEP.
The buzzing alarm circuit is controlled by the CPU signal and sends out a temperature early warning and alarm prompt sound. Wherein, the alarm is sounded 1 time per minute in the early warning state, and 1 time per second in the alarm state.
The power conversion circuit comprises an LM2576SX-5.0 chip U8 and an AMS1117-3.3 chip U11, wherein the 1 pin of the U8 is respectively connected with +24V, the positive electrode of a capacitor C55 and one end of a capacitor C57, the negative electrode of the C55 is respectively connected with GND, the other end of the C57, the 5 pin of the U8 and the 3 pin of the U8, the 2 pin of the U8 is respectively connected with one end of an inductor L5 and the cathode of a diode D13, the other end of the L5 is respectively connected with the positive electrode of a capacitor C56, one end of a capacitor C58 and +5V, and the anode of the D13 is respectively connected with the negative electrode of the C56, the other end of the C58 and the GND; 4 feet of U8 are connected with +5V;
the 3 feet of the U11 are respectively connected with +5V, one end of a capacitor C62 and the positive electrode of a capacitor C61, the 1 foot of the U11 is respectively connected with the other end of the C62, the negative electrode of the C61, one end of a capacitor C59, the negative electrode of the capacitor C60 and GND, and the other end of the C59 is respectively connected with the 2 feet of the U11, the 4 feet of the U11, the positive electrode of the C60 and +3.3V.
The power supply conversion circuit converts 24V power supply into 5V power supply and converts 5V power supply into 3.3V power supply through the circuit formed by the power supply conversion module and the corresponding elements, and supplies power to the corresponding electronic modules in the circuit.
The GPRS remote communication circuit comprises a diode D14, wherein the anode of the D14 is connected with +5V_SIM800, and the cathode of the D14 is connected with +4.2V through a diode D15;
+4.2V is connected with the cathode of the voltage stabilizing tube ZD2, the positive electrode of the capacitor C63-C66, one end of the capacitor C67 and one end of the capacitor C68 respectively, and the anode of the ZD2 is connected with the negative electrode of the capacitor C63-C66, the other end of the capacitor C67 and the other end of the capacitor C68 respectively;
the PA11 is respectively connected with one end of a resistor R44 and the base electrode of an NPN triode Q6 through a resistor R43, the collector electrode of the Q6 is connected with the KEY, and the emitter electrode of the Q6 is respectively connected with the other ends of the GND and the R44;
the SIM 800-TXD is respectively connected with the PC11 and the 1 pin of the connector P17 through a resistor R41, the SIM 800-RXD is respectively connected with one end of a resistor R45 and one end of a resistor R42, the other end of the resistor R42 is respectively connected with the 2 pins of the PC10 and the P17, and the other end of the resistor R45 is respectively connected with the GND and the 3 pins of the P17;
the 1 and 2 pins of the SIM800C chip U12 are correspondingly connected with the SIM800 TXD and the SIM800 RXD respectively, the 6 pin of the U12 is connected with the PA15 through a resistor R53, the 8 pin of the U12 is connected with the GND, the 13 pin of the U12 is connected with the GND, and the 15 to 18 pins of the U12 are correspondingly connected with the SIM_DATA, the SIM_CLK, the SIM_RST and the SIM_VDD respectively, and the 19 and 21 pins of the U12 are connected with the GND; the 24-27 pins of the U12 are correspondingly connected with the USB_BUS, the USB_DP, the USB_DN and the GND respectively, and the 28 pin of the U12 is connected with the GND through a capacitor C70; pins 30, 31 and 33 of U12 are connected with GND, pin 1 of a 32-pin connector J3 of U12 is connected with GND of pin 2 of J3; pin 34, 35 of U12 are connected with +4.2V, pin 36, 37 of U12 are connected with GND, pin 39 of U12 is connected with KEY, pin 41 of U12 is connected with GND through resistor R50 and LED D17 in turn, and pin 42 of U12 is connected with PA12 through resistor R51;
the +5V is respectively connected with the cathode of the diode D16 and the 8 pin of the HFD4/5-S relay K2, the anode of the D16 is respectively connected with the 1 pin of the K2 and the collector of the NPN triode Q7, the base electrode of the Q7 is respectively connected with one end of the resistor R48 and one end of the resistor R49, the other end of the R48 is connected with the PA7, and the other end of the R49 is respectively connected with the emitters of GND and Q7;
the pins 2 and 3 of K2 are respectively connected with +5V_SIM800 and +5V correspondingly;
u14 (U14 is the draw-in groove of cell-phone SIM card, the model is little card 6P MICRO SIM), U14's 2 foot links to each other with electric capacity C72 one end respectively, SIM_VDD, SMF05C chip U17's 1 foot, the C72 other end links to each other with GND, U17's 2 foot respectively, U17's 4 foot links to each other with U14's 4 foot, resistance R56 one end respectively, U17's 5 foot links to each other with U14's 5 foot, resistance R55 one end respectively, U17's 6 foot links to each other with U14's 6 foot, resistance R54 one end respectively, the R54 other end links to each other with SIM_CLK, electric capacity C75 one end respectively, the R55 other end links to each other with SIM_DATA, electric capacity C74 one end respectively, the R56 other end links to each other with SIM_RST, electric capacity C73 one end, the C73 other end links to each other with GND, the C74 other end, the C75 other end respectively.
The GPRS remote communication circuit is used for sending the temperature information and the alarm information to the remote terminal in real time.
The microprocessor circuit comprises 34 to 37, 40 to 43, 100 to 105, 109, 110, 46 and 47 pins of an STM32F407ZET6 chip U4, wherein the pins of the U4 are respectively and correspondingly connected with ADC0, ADC1, PA2, PA3 to PA12, TMS, TCK, PA, PB0 and PB1, and the pin 48 of the U4 is connected with GND through a resistor R36;
pins 133 to 137, 139, 140, 69, 70, 73 to 76, 26 to 29, 44, 45, 96 to 99, 111 to 113, 7 to 9, 114, 115, 119, 122, 77 to 82, 85, 86 of U4 are correspondingly connected with PB3 to PB15, PC0 to PC15, D2, D3, NOE, NWE, D, 13 to D15, A16 to A18, D0, D1 respectively, and pin 138 of U4 is connected with GND through resistor R1;
pins 31 and 33 of U4 are respectively connected with GND and VREF+ correspondingly;
pin 106 of U4 is connected with GND through a capacitor C16, pin 71 of U4 is connected with GND through a capacitor C17, and pins 32 and 6 of U4 are correspondingly connected with VREF+ and +3.3V respectively; the 25 feet of U4 are respectively connected with NEST, one end of a capacitor C7, one end of a restarting button SW1 and one end of a resistor R3, the other end of R3 is connected with +3.3V, and the other end of SW1 is respectively connected with the other end of C7 and GND;
pins 127, 125, 90-87, 57-53, 50, 15-10, 68-63, 60-58, 142 and 141 of U4 are correspondingly connected with NE4, NE3, A15-A0, D12-D4, NBL1 and NBL0 respectively;
pins 1 to 4 of the connector P1 are correspondingly connected with +3.3V, TMS, TCK, GND respectively, +3.3V is connected with one end of a capacitor C15, one end of a capacitor C25, one end of a capacitor C26, one end of a capacitor C3, one end of a capacitor C27, one end of a capacitor C5, one end of a capacitor C6, one end of a capacitor C31 and one end of a capacitor C32 respectively, and GND is connected with the other end of the capacitor C15, the other end of the capacitor C25, the other end of the capacitor C26, the other end of the capacitor C3, the other end of the capacitor C27, the other end of the capacitor C5, the other end of the capacitor C6, the other end of the capacitor C31 and the other end of the capacitor C32 respectively;
pins 5-4, 44-42, 27-18, 23 and 28 of the IS62WV51216 chip U13 are respectively and correspondingly connected with pins A0-A4, A18-A16, A13-A15, A5, A7-A11, A6 and A12, pins 11 of the U13 are respectively connected with +3.3V, one end of a capacitor C76 and one end of a capacitor C77, and pins 34 of the U13 are respectively connected with the other ends of GND, C76 and C77;
the 6 pin of U13 is respectively connected with one end of NE3 and one end of resistor R59, the other end of R59 is connected with +3.3V, and the 17, 41, 39, 40, 7-10, 13-16, 29-32 and 35-38 pins of U13 are respectively correspondingly connected with NEW, NOE, NBL, NBL1 and D0-D15;
1-4 pins of the 24C256K chip U16 are connected with GND, 5 pins of the U16 are respectively connected with PB4 and one end of a resistor R58, the other end of the R58 is respectively connected with one end of a resistor R57, +3.3V, one end of a capacitor C71 and 8 pins of the U16, the other end of the C71 is respectively connected with 7 pins of the U16 and GND, and the other end of the R57 is respectively connected with 6 pins of PB3 and U16;
VREF+ is respectively connected with one end of a capacitor C78, the positive electrode of the capacitor C69 and one end of a resistor R52, the other end of the capacitor C78 is respectively connected with the negative electrodes of GND and the capacitor C69, and the other end of the resistor R52 is connected with +3.3V.
The microprocessor circuit comprises a CPU chip, a program downloading port circuit, a microprocessor SRAM circuit and a microprocessor EEPROM circuit. The partial circuit is a core part of the device, and the completed work comprises the steps of controlling the movement of the cradle head, collecting signals of the infrared temperature measuring probe, establishing a surface temperature database of the tested equipment, carrying out temperature abnormality early warning and alarm identification on the tested equipment according to an intelligent detection method, and the like. The CPU chip adopts an STM32F407ZET6 chip.
The microprocessor circuit adopts the following control steps:
firstly, a surface temperature database of tested equipment in a normal running state is established, a two-dimensional coordinate system (by controlling how to establish which hardware is established, whether the establishment process is a conventional technology or not, if not, the detailed description should be made) is established on the surface of the tested object, and x i 、y i Representing xi on the abscissa and y on the ordinate i The position of the detection points is delta s (unit cm), T is the transverse spacing and the longitudinal spacing between the detection points c (x i ,y i ) Representing the surface coordinates of the device under test as (x) i ,y i ) Normal temperature (unit ℃), T c (x i ,y i ) The database is a dynamic database, and the normal temperature values of each point on the surface of the equipment are continuously updated along with the change of time;
early warning level
Firstly, three temperature out-of-limit thresholds T are set th1 、T th2 、T thp 。T th1 Is the temperature out-of-limit threshold (unit ℃) of a heating point, T th2 Is the temperature threshold value (unit DEG C) of the adjacent point of the heating point, T th2 <T th1 ，T th2 And T is th1 In proportional relation, T th2 Inversely proportional to the dot spacing Deltas, T thp The average temperature of the heating point and the adjacent point is out of limit threshold (unit ℃).
The specific method comprises the following steps:
detecting all points (a two-dimensional coordinate system is established on the surface of the detected object, xi and yi represent positions of detection points with xi as an abscissa and yi as an ordinate, the transverse spacing and the longitudinal spacing between the detection points are delta s, delta s can be set to be 20cm, and reliable identification, early warning and reliable judgment of alarm conditions of heating points are ensured)
Is set to a real-time temperature value T (x i ,y i ) The real-time temperature value of each point position and the normal temperature value T of the point position are combined c (x i ,y i ) Calculating the difference value, if the difference value is larger than the temperature out-of-limit threshold T of the heating point th1 As shown in the following formula, the point coordinate value (x i ,y i )。
T(x i ,y i )-T c (x i ，y i )>T th1
For coordinate values (x i ，y i ) The real-time temperature values of the four adjacent points of the upper, lower, left and right of the point location are detected and judged (if the number of the adjacent points is less than 4, there are several judgments), as shown in fig. 8. If one of the following two conditions is satisfied, the coordinate value (x i ，y i ) Abnormal heating occurs at the point position, and early warning information is sent to the upper computer.
Calculating the difference between the real-time temperature value of each adjacent point and the normal temperature value of the point, and judging whether all the differences are larger than the temperature threshold T of the adjacent point of the heating point th2 As shown in the following formula.
Upper adjacent point: t (x) i ，y i+1 )-T c (x i ，y i+1 )>T th2
The following adjacent points: t (x) i ，y i-1 )-T c (x i ，y i-1 )>T th2
Left adjacent point: t (x) i-1 ，y i )-T c (x i-1 ，y i )>T th2
Right adjacent point: t (x) i+1 ,y i )-T c (x i+1 ,y i )>T th2
T (x) i ,y i+1 )、T(x i ,y i-1 )、T(x i-1 ,y i )、T(x i+1 ,y i ) The real-time temperature values of the four adjacent points of the upper, lower, left and right of the heating point are respectively T c (x i ,y i+1 )、T c (x i ,y i-1 )、T c (x i-1 ,y i )、T c (x i+1 ,y i ) The normal temperature values of the four adjacent points are respectively the upper, lower, left and right of the heating point.
Averaging the real-time temperature values of the heating point and the adjacent points, and judging whether the average value is larger than an average temperature threshold value T thp As shown in the following formula.
Alarm level
First, a detection period Deltat (unit s) of a heating point and a heating point temperature rising speed threshold K are set t (unit ℃/s), average temperature rise rate threshold K tp (unit ℃/s), heating alarm threshold T thb (in ℃). The temperature detection is completed once for the heating point in each detection period, and T is adopted f (x i ,y i ) Representing the temperature of the heating point, if one of the following three conditions is satisfied, the coordinate value (x i ,y i ) The point position is heated seriously, and alarm information is sent to the upper computer immediately.
(1) The heating point temperature rises above the threshold as shown in the following equation.
T in f1 (x i ,y i ) And T f2 (x i ,y i ) And a temperature detection value for two consecutive periods of the heat generation point.
(2) And the average temperature rising speed of the heating point and the adjacent points exceeds a threshold value, and the average temperature rising speed is shown in the following formula.
In [ T ] f1 (x i ,y i+1 ),T f2 (x i ,y i+1 )]、[T f1 (x i ,y i-1 ),T f2 (x i ,y i-1 )]、[T f1 (x i-1 ,y i ),T f2 (x i-1 ,y i )]、[T f1 (x i+1 ,y i ),T f2 (x i+1 ,y i )]The temperature detection values of four adjacent points of the upper, lower, left and right of the heating point are respectively two continuous periods.
(3) The difference value between the real-time temperature value and the normal temperature value of the heating point exceeds the heating alarm threshold, and the heating alarm threshold is shown in the following formula.
T f (x i ,y i )-T c (x i ,y i )>T thb
The normal temperature value is an average value of 10 times of temperature of the point of which the coordinate (xi, yi) is newly measured.
The detection interval time of the 10 times of temperature is 3 seconds.
In the electric power system, the electric power system is monitored, and the electric power system is provided with charged bodies at the periphery, but almost all the electric power system is high-voltage charged bodies; high current power circuits, for low voltage monitoring circuits, have difficulty finding the appropriate power access point. The circuit is convenient to design in power supply, and can be connected with a power taking circuit of an electromagnetic mutual inductance type and a power input interface of a photovoltaic power supply system; the power supply can be selectively connected according to local conditions.
Q3 and Q4 in the power supply circuit form a linear stabilized power supply circuit, and the application of the modified circuit has the advantages that the current induction circuit at the front end is similar to a constant current source power supply mode; when the primary side current of the T1 is larger, the power consumption of the circuit is also called small, according to the relation of the primary side and the secondary side of the transformer, the secondary side voltage can be rapidly increased, after the linear power supply circuit is adopted, the linear power supply circuit can dynamically adjust the amplification value of the Q3 in the amplification area, the voltage of the output end of the Q3 is always kept stable, and the energy of the primary side with larger current is released in a heating mode through the operation of the Q3 in the amplification area, so that the safe and reliable operation of the circuit is kept.
The circuit adopts high-precision operation, and achieves the function of an expensive thermal imaging probe by combining the circuit with an infrared temperature probe with low price through the principle of point composition surface by the step control of U4. The transformer substation can be monitored in a full range.
When PA11 goes high for 7 seconds, goes low, and can activate SIM800; the power-off mode is entered after the power-off mode is changed to the low level after the power-off mode is maintained for 7 seconds again.
K2 is used for closing the power supply of the SIM800, and when repeated incapability of connecting to a network occurs; or when the SIM800 cannot be started, the power-off and the power-on are performed by using K2.
When the infrared temperature measuring probe is installed and used, the power end and the control end of the cradle head are connected with the cradle head control circuit, the power end and the control end of the infrared temperature measuring probe are connected with the infrared temperature measuring circuit, and the infrared temperature measuring probe is installed and fixed on the cradle head. If an external 24V direct current power supply mode is adopted, an external 24V power supply is connected with an external power supply input interface of the multi-source complementary power supply circuit. If the power line induction current power supply mode is adopted, the induction transformer and the power line are placed in close distance. The device disclosed by the invention sends the temperature data to the wireless communication module of the remote terminal through the GPRS remote communication circuit, the wireless communication module transmits the data to the upper computer, the upper computer stores the equipment temperature data on one hand, the early warning and alarm information of the lower computer is led into the temperature early warning alarm system to give an alarm to operation and maintenance personnel, and on the other hand, the temperature data is led into the substation simulation model to realize semi-physical simulation of the substation. The real temperature parameters detected on site are fed back to the simulation model of the transformer substation, so that the simulation model is closer to an actual system, and the accuracy of a simulation result is improved.
The invention classifies abnormal heating faults of equipment into two grades according to severity: early warning level and alarm level. Abnormal heating points appear on the surface of the equipment under the early warning level, but the heating causes small temperature rise values of the point and adjacent points, so that the equipment can be observed continuously without taking urgent measures. The temperature of the abnormal heating point or the adjacent point on the surface of the equipment under the alarm level rises sharply, and emergency measures are needed to be taken immediately for maintenance.
The device divides the abnormal heating fault of the equipment into two grades according to the severity in detection, and the abnormal heating degree of the equipment is distinguished by the fault grade detection method, so that the severity of the abnormal heating is effectively detected, and the occurrence of the abnormal heating fault of the equipment and the expansion of accidents after the abnormal heating of the equipment can be more effectively prevented.
It should be understood that the foregoing detailed description of the present invention is provided for illustration only and is not limited to the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention may be modified or substituted for the same technical effects; as long as the use requirement is met, the invention is within the protection scope of the invention.

Claims (6)

1. The on-line temperature detection and simulation auxiliary equipment for the transformer substation comprises a microprocessor circuit, a cradle head control circuit, an infrared temperature measurement circuit, a wireless configuration circuit, a power supply conversion circuit and a GPRS remote communication circuit, and is characterized in that a signal transmission port of the microprocessor circuit is respectively connected with a control signal input port of the cradle head control circuit, a detection signal output port of the infrared temperature measurement circuit, a signal transmission port of the wireless configuration circuit and a signal transmission port of the GPRS remote communication circuit, an electric energy output port of the power supply conversion circuit is respectively connected with a power supply port of the microprocessor circuit, a power supply port of the cradle head control circuit, a power supply port of the infrared temperature measurement circuit, a power supply port of the wireless configuration circuit and a power supply port of the GPRS remote communication circuit, the detection signal input port of the infrared temperature measurement circuit is connected with a detection signal output port of the infrared temperature measurement probe, the infrared temperature measurement probe is arranged on the cradle head, and the control signal output port of the cradle head control circuit is connected with a control signal input port of the cradle head;
the transformer substation on-line temperature detection and simulation auxiliary equipment further comprises a power line induction power supply circuit, wherein an electric energy output port of the power line induction power supply circuit is connected with an electric energy input port of the power supply conversion circuit;
the cradle head control circuit comprises welding points P7, P11, P14 and P15, wherein P7 is respectively connected with the positive electrode of a capacitor C14, the positive electrode of a capacitor C19, one end of a capacitor C21 and 24V, one end of a magnetic bead L1, the other end of the capacitor L1 is respectively connected with the positive electrode of the capacitor C22, one end of the capacitor C23 and +24V, P11 is respectively connected with the negative electrode of the capacitor C14, the negative electrode of the capacitor C19, the other end of the capacitor C21 and one end of the magnetic bead L3, and the other end of the L3 is respectively connected with the negative electrode of the capacitor C22, the other end of the capacitor C23 and GND;
the P14 is respectively connected with one end of a TVS2 pipe and one end of a TVS21 pipe, the other end of the TVS2 pipe is respectively connected with one end of a P15 pipe and one end of a TVS23 pipe, the other end of the TVS21 pipe is respectively connected with one end of a resistor R11, one end of a resistor R10 and 7 pins of an RS485_ B, SP3485EN-L/TR chip U7, the other end of the R10 is connected with GND, the other end of the TVS3 pipe is respectively connected with the other end of the resistor R11, one end of the resistor R12 and 6 pins of the RS485_ A, SP3485EN-L/TR chip U7, and the other end of the R12 is connected with +3.3V;
the 5 pin of U7 is connected with one end of a capacitor C53, one end of a capacitor C54 and GND respectively, the other end of the capacitor C53 is connected with the 8 pin of U7, the other end of the capacitor C54 and +3.3V respectively, the 4 pin of U7 is connected with PA9, the 2 pin and the 3 pin of U7 are connected with PA8, and the 1 pin of U7 is connected with PA10; pins 1 and 2 of the connector P10 are respectively correspondingly connected with the RS485_ B, RS 485_A;
the infrared temperature measuring circuit comprises welding points P9, P12, P13 and P16, wherein P9 is respectively connected with one end of a capacitor C24, the positive electrode of a capacitor C28 and one end of a magnetic bead L2, the other end of the L2 is connected with +24V, P12 is respectively connected with the other end of the capacitor C24, the negative electrode of the capacitor C28 and one end of the magnetic bead L4, and the other end of the L4 is connected with GND;
p13 is respectively connected with one end of a resistor R17, one end of a resistor R34 and the cathode of a voltage stabilizing tube D10 through a resistor R15, the anode of the D10 is respectively connected with the other ends of the P16 and the R34, one end of a capacitor C48 and GND, and the other end of the R17 is respectively connected with the other end of the C48 and the ADC 0;
the power line induction power supply circuit comprises a transformer T1A, wherein one end of the secondary side of the T1A is respectively connected with one end of a capacitor C47, one end of a capacitor C51 and one end of the input end of a rectifier bridge D9, the other end of the C47 is respectively connected with the other end of the secondary side of the T1A, one end of a capacitor C49 and the other end of the input end of the D9, and the other end of the C49 is respectively connected with the other ends of FG and C51;
the positive electrode of the output end of the D9 is respectively connected with one end of a resistor R13 and the collector electrode of an NPN triode Q3, the base electrode of the Q3 is respectively connected with the other end of the R13 and the collector electrode of an NPN triode Q4, the emitter electrode of the Q4 is connected with the cathode of a voltage stabilizing tube D11, and the anode of the D11 is respectively connected with the negative electrode of the output end of the D9, one end of a resistor R19, the negative electrode of a capacitor C45, one end of a capacitor C46, the negative electrode of a storage battery BT1, the anode of a voltage stabilizing tube D12, one end of a resistor R35, one end of a capacitor C52 and GND;
the base electrode of the Q4 is respectively connected with the other end of the R19 and one end of the resistor R14, the other end of the R14 is respectively connected with the emitter electrode of the Q3, the positive electrode of the C45, the other end of the C46, the positive electrode of the BT1, one end of the resistor R16, 24V and the external power input end CH1, and the external power input end DC005 is connected with GND;
the other end of R16 is respectively connected with the cathode of D12, the other end of R35 and one end of resistor R18, and the other end of R18 is respectively connected with the other end of C52 and ADC 1.
2. The on-line temperature detection and simulation auxiliary equipment for the transformer substation according to claim 1, further comprising a buzzing alarm circuit, wherein a control signal input port of the buzzing alarm circuit is connected with a control signal output port of the microprocessor circuit.
3. The transformer substation on-line temperature detection and simulation auxiliary equipment according to claim 1 is characterized in that the wireless configuration circuit adopts a smart-TR chip U5, 1 pin of the U5 is respectively connected with +3.3V, one end of a capacitor C29 and the positive electrode of a capacitor C30, 2-5 pins of the U5 connected with the other ends of GND and C29 are respectively connected with PA2, PA3, PA4 and PA5 correspondingly, 6 pins of the U5 are respectively connected with GND and 2 pins of a connector J2, and 7 pins of the U5 are connected with 1 pin of J2.
4. The transformer substation on-line temperature detection and simulation auxiliary equipment according to claim 2, wherein the buzzer alarm circuit comprises a resistor R38, one end of the resistor R38 is connected with a PA6, the other end of the resistor R38 is respectively connected with one end of a resistor R39 and a base electrode of an NPN triode Q5, an emitter electrode of the Q5 is respectively connected with the other end of the resistor R39 and GND, and a collector electrode of the Q5 is connected with +24V through a buzzer BEEP.
5. The transformer substation on-line temperature detection and simulation auxiliary equipment according to claim 1 is characterized in that the power supply conversion circuit comprises an LM2576SX-5.0 chip U8 and an AMS1117-3.3 chip U11, wherein the 1 pin of the U8 is respectively connected with +24V, the positive electrode of a capacitor C55 and one end of the capacitor C57, the negative electrode of the C55 is respectively connected with GND, the other end of the C57, the 5 pin of the U8 and the 3 pin of the U8, the 2 pin of the U8 is respectively connected with one end of an inductor L5 and the cathode of a diode D13, the other end of the L5 is respectively connected with the positive electrode of the capacitor C56, one end of the capacitor C58 and +5V, and the anode of the D13 is respectively connected with the negative electrode of the C56, the other end of the C58 and the GND; 4 feet of U8 are connected with +5V;
the 3 feet of the U11 are respectively connected with +5V, one end of a capacitor C62 and the positive electrode of a capacitor C61, the 1 foot of the U11 is respectively connected with the other end of the C62, the negative electrode of the C61, one end of a capacitor C59, the negative electrode of the capacitor C60 and GND, and the other end of the C59 is respectively connected with the 2 feet of the U11, the 4 feet of the U11, the positive electrode of the C60 and +3.3V.
6. The transformer substation online temperature detection and simulation auxiliary device according to claim 1, wherein the GPRS remote communication circuit comprises a diode D14, wherein an anode of the D14 is connected with +5V_SIM800, and a cathode of the D14 is connected with +4.2V through a diode D15;
+4.2V is connected with the cathode of the voltage stabilizing tube ZD2, the positive electrode of the capacitor C63-C66, one end of the capacitor C67 and one end of the capacitor C68 respectively, and the anode of the ZD2 is connected with the negative electrode of the capacitor C63-C66, the other end of the capacitor C67 and the other end of the capacitor C68 respectively;
the PA11 is respectively connected with one end of a resistor R44 and the base electrode of an NPN triode Q6 through a resistor R43, the collector electrode of the Q6 is connected with the KEY, and the emitter electrode of the Q6 is respectively connected with the other ends of the GND and the R44;
the SIM 800-TXD is respectively connected with the PC11 and the 1 pin of the connector P17 through a resistor R41, the SIM 800-RXD is respectively connected with one end of a resistor R45 and one end of a resistor R42, the other end of the resistor R42 is respectively connected with the 2 pins of the PC10 and the P17, and the other end of the resistor R45 is respectively connected with the GND and the 3 pins of the P17;
the 1 and 2 pins of the SIM800C chip U12 are correspondingly connected with the SIM800 TXD and the SIM800 RXD respectively, the 6 pin of the U12 is connected with the PA15 through a resistor R53, the 8 pin of the U12 is connected with the GND, the 13 pin of the U12 is connected with the GND, and the 15 to 18 pins of the U12 are correspondingly connected with the SIM_DATA, the SIM_CLK, the SIM_RST and the SIM_VDD respectively, and the 19 and 21 pins of the U12 are connected with the GND; the 24-27 pins of the U12 are correspondingly connected with the USB_BUS, the USB_DP, the USB_DN and the GND respectively, and the 28 pin of the U12 is connected with the GND through a capacitor C70; pins 30, 31 and 33 of U12 are connected with GND, pin 1 of a 32-pin connector J3 of U12 is connected with GND of pin 2 of J3; pin 34, 35 of U12 are connected with +4.2V, pin 36, 37 of U12 are connected with GND, pin 39 of U12 is connected with KEY, pin 41 of U12 is connected with GND through resistor R50 and LED D17 in turn, and pin 42 of U12 is connected with PA12 through resistor R51;
the +5V is respectively connected with the cathode of the diode D16 and the 8 pin of the HFD4/5-S relay K2, the anode of the D16 is respectively connected with the 1 pin of the K2 and the collector of the NPN triode Q7, the base electrode of the Q7 is respectively connected with one end of the resistor R48 and one end of the resistor R49, the other end of the R48 is connected with the PA7, and the other end of the R49 is respectively connected with the emitters of GND and Q7;
the pins 2 and 3 of K2 are respectively connected with +5V_SIM800 and +5V correspondingly;
the 1 foot of U14 connects GND, the 2 foot of U14 links to each other with electric capacity C72 one end, SIM_VDD, SMF05C chip U17's 1 foot respectively, the C72 other end links to each other with GND, U17's 2 foot respectively, U17's 4 foot links to each other with U14's 4 foot, resistance R56 one end respectively, U17's 5 foot links to each other with U14's 5 foot, resistance R55 one end respectively, U17's 6 foot links to each other with U14's 6 foot, resistance R54 one end respectively, the R54 other end links to each other with SIM_CLK, electric capacity C75 one end respectively, the R55 other end links to each other with SIM_DATA, electric capacity C74 one end respectively, the R56 other end links to each other with SIM_RST, electric capacity C73 one end respectively, the C73 other end links to each other with GND, the C74 other end, the C75 other end respectively.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203310517U (en) * 2013-04-28 2013-11-27 山东康威通信技术股份有限公司 Electric power high voltage cable joint non-contact infrared temperature measuring device
CN204392424U (en) * 2014-12-17 2015-06-10 东莞市永之兴电子科技有限公司 A kind of infrared trigger-type digital supervision video recording system
CN104777777A (en) * 2015-04-10 2015-07-15 北京林业大学 Remote-control vehicle-mounted control system for fire engine
CN105187769A (en) * 2015-07-30 2015-12-23 国网河南省电力公司濮阳供电公司 Status monitoring system for high-voltage transmission line
CN210444362U (en) * 2019-08-21 2020-05-01 广州市索广电子技术有限公司 Multi-path 4K-SDI camera control unit supporting 4K audio de-embedding
CN212030792U (en) * 2020-06-10 2020-11-27 沈阳铁路信号有限责任公司 Steel rail stress change monitoring and compensating module
CN212303008U (en) * 2020-11-24 2021-01-05 南京泽荣自动化系统有限责任公司 Corner display device based on ABZ differential signal

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203310517U (en) * 2013-04-28 2013-11-27 山东康威通信技术股份有限公司 Electric power high voltage cable joint non-contact infrared temperature measuring device
CN204392424U (en) * 2014-12-17 2015-06-10 东莞市永之兴电子科技有限公司 A kind of infrared trigger-type digital supervision video recording system
CN104777777A (en) * 2015-04-10 2015-07-15 北京林业大学 Remote-control vehicle-mounted control system for fire engine
CN105187769A (en) * 2015-07-30 2015-12-23 国网河南省电力公司濮阳供电公司 Status monitoring system for high-voltage transmission line
CN210444362U (en) * 2019-08-21 2020-05-01 广州市索广电子技术有限公司 Multi-path 4K-SDI camera control unit supporting 4K audio de-embedding
CN212030792U (en) * 2020-06-10 2020-11-27 沈阳铁路信号有限责任公司 Steel rail stress change monitoring and compensating module
CN212303008U (en) * 2020-11-24 2021-01-05 南京泽荣自动化系统有限责任公司 Corner display device based on ABZ differential signal

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