CN101256211A - Transformer multifunctional monitoring system - Google Patents
Transformer multifunctional monitoring system Download PDFInfo
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- CN101256211A CN101256211A CNA2008100149059A CN200810014905A CN101256211A CN 101256211 A CN101256211 A CN 101256211A CN A2008100149059 A CNA2008100149059 A CN A2008100149059A CN 200810014905 A CN200810014905 A CN 200810014905A CN 101256211 A CN101256211 A CN 101256211A
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Abstract
The invention relates to a transformer multifunction monitoring system. In main loop of transformer, high tension current transformers L1, L2, L3 are mounted on the high pressure side to monitor the input current and low tension current transformers L4, L5, Lh6 are mounted on the low pressure side to monitor the load current. The main loop of the transformer also comprises: a decline switch monitoring circuit; a high, low side overcurrent supervisory circuit; a monitoring circuit for monitoring the phase failure of the high pressure circuit; a monitoring circuit for monitoring the phase failure of the low pressure circuit. The system also comprises supervisory circuit for transformer hyperpyrexia, closing cap being prized and shock. The transformer multifunction monitoring system uses GSM, or GPS or CDMA as medium wireless transmission signal and the terminal uses computer to display and record the controlled data. The transformer multifunction monitoring system has wide supervisory range, all ready utility function, can satisfy the supervision requirement of deenergizing, overloading, phase failure, temperature, oil pressure, theft protection and remote wireless transmission of transformer in a variety of power supply systems.
Description
Technical field
The present invention relates to a kind of transformer multifunctional monitoring system in electric power facility field.
Background technology
Electric power supply now all be unable to do without transformer, transformer in the course of the work, faults such as all kinds of self or artificial destructions can appear unavoidably, in case this type of fault takes place and fails in time to find and keep in repair to bring to safety in production to threaten and loss, as before above-mentioned situation takes place or the while can in time report to the police, its loss will alleviate or avoid fully greatly so.
Summary of the invention
Purpose of the present invention is exactly the defective that exists at prior art, provide a kind of can be before transformer fault takes place or the transformer multifunctional monitoring system that can in time report to the police of while.
Its technical scheme comprises:
(1) in the transformer major loop, high-pressure side is separately installed with high-tension current inductor, and low pressure end is separately installed with low-voltage current mutual inductor; (2) being provided with three road drop switch observation circuits in the transformer major loop, is respectively to be composed in series with resistance by optocoupler is in parallel with diode again, and wherein the output terminal of optocoupler is connected to the I/O port of the single-chip microcomputer in signal Processing and the transtation mission circuit; (3) high and low pressure side overcurrent monitoring circuit is: in parallel behind three road resistance difference series diode, connect electric capacity, resistance and diode, optocoupler then, and the output terminal of optocoupler is connected to the I/O port of the single-chip microcomputer in signal Processing and the transtation mission circuit; (4) high-pressure side phase shortage observation circuit is three tunnel adjacent phase observation circuits, is composed in series with resistance by optocoupler is in parallel with diode again, and the output terminal of optocoupler is connected to the I/O port of the single-chip microcomputer in signal Processing and the transtation mission circuit; (5) low pressure end phase shortage observation circuit is connected with resistance with the diode parallel connection by three tunnel optocouplers that connect low pressure end respectively again, is connected to the I/O port of the single-chip microcomputer in signal Processing and the transtation mission circuit respectively by the output terminal of optocoupler; (6) power circuit is to connect into full-wave rectifying circuit by transformer and diode, and the rechargeable battery resistance in series is formed charging circuit, and integrated regulator connects electric capacity and forms mu balanced circuit; (7) the transformer temperature is too high, transformer oil level and pick-proof vibration monitoring circuit comprise: by adjustable resistance, thermistor and resistance series connection, the base stage of triode connects between thermistor and the resistance, the collector of triode connects optocoupler and diode, the output terminal of optocoupler is connected to the I/O port of the single-chip microcomputer in signal Processing and the transtation mission circuit and forms the too high observation circuit of temperature, by resistance, adjustable resistance and shock sensor series connection, the base stage of triode connects shock sensor and resistance, the collector of triode connects optocoupler and diode, the output terminal of optocoupler is connected to the I/O port of the single-chip microcomputer in signal Processing and the transtation mission circuit and forms pick-proof vibration monitoring circuit, by resistance, fuel level sensor and resistance series connection, the base stage of triode connects fuel level sensor and resistance, the collector of triode connects optocoupler and diode, and the output terminal of optocoupler is connected to the I/O port of the single-chip microcomputer in signal Processing and the transtation mission circuit and forms the oil level observation circuit; (8) signal Processing and transtation mission circuit, be to be core with the single-chip microcomputer, comprise the I/O input port, the reset circuit that capacitances in series resistance is formed, crystal oscillator connects single-chip microcomputer and forms clock circuit, the wireless digital transmitter module is connected single-chip microcomputer with emitting antenna, integrated regulator connect electric capacity form single-chip microcomputer mu balanced circuit; (9) Data Receiving, storage, demonstration and warning circuit, the wireless digital receiver module directly is connected the computer serial ports with receiving antenna, and transformer and diode connect into full-wave rectifying circuit, and integrated regulator connects electric capacity and forms mu balanced circuit.
Described wireless digital transmits and receives module and comprises GPS, GSM or CDMA data transfer mode.
It is the media wireless signal transmission that the present invention adopts GSM or GPS or CDMA, and terminal adopts computer to show and writes down controlled data.It is wide in range to have monitoring range, and utility function is complete, can satisfy monitoring needs such as the outage, overload, phase shortage, temperature, oil pressure of transformer in the various electric power systems, antitheft and long distance wireless transmission.
Description of drawings
Accompanying drawing has been enumerated the circuit theory diagrams of a kind of embodiment.Wherein:
Fig. 1 is the transformer major loop, and BL is a power transformer, and B1, B2, B3 are drop switch, and L1, L2, L3 are high-tension current inductors; L4, L5, L6 low-voltage current mutual inductor;
Fig. 2 a, 2b, 2c are respectively the observation circuits of three drop switch B1, B2, B3;
Fig. 3 a is a high-pressure side overcurrent monitoring circuit, and Fig. 3 b is a low pressure end overcurrent monitoring circuit;
Fig. 4 a is A, B phase observation circuit, and Fig. 4 b is B, C phase observation circuit, and Fig. 4 c is C, A phase observation circuit;
Fig. 5 is a low pressure end phase shortage observation circuit;
Fig. 6 is a power circuit;
Fig. 7 is that the transformer temperature is too high, transformer oil level and pick-proof vibration monitoring circuit;
Fig. 8 is signal Processing and transtation mission circuit;
Fig. 9 is Data Receiving, storage, demonstration and warning circuit.
Embodiment
Be further described with regard to its circuit structure and principle of work below in conjunction with accompanying drawing:
Fig. 1 is a major loop, and among the figure: three-phase high-voltage power transmission line A, B, C connect power transformer BL through three drop switch B1, B2, B3, is coated with three high-tension current inductor L1, L2, L3 in A ', B ', the C ' side of drop switch; The low pressure end of power transformer BL is coated with three low-voltage current mutual inductor L4, L5, L6, and low pressure is output as three-phase and four-line a, b, c, n, and n is a zero line.
Fig. 2 is the drop switch observation circuit, among the figure: Fig. 2 a, 2b, 2c are respectively the observation circuits of three drop switch B1, B2, B3, Fig. 2 a is composed in series with resistance R 1, R2 by optocoupler G1 is in parallel with diode D1 again, and the output terminal 1 of optocoupler G1 is connected to I/O mouth 1 end of Fig. 8 single-chip microcomputer IC3; Fig. 2 b is composed in series with resistance R 3, R4 by optocoupler G2 is in parallel with diode D2 again, and the output terminal 2 of optocoupler G2 is connected to I/O mouth 2 ends of Fig. 8 single-chip microcomputer IC3; Fig. 2 c is composed in series with resistance R 5, R6 by optocoupler G3 is in parallel with diode D3 again, and the output terminal 3 of optocoupler G3 is connected to I/O mouth 3 ends of Fig. 8 single-chip microcomputer IC3; A, A ', B, B ', C, C ' are connected to Fig. 1 among the figure.
Fig. 3 is high and low pressure side overcurrent monitoring circuit, among the figure: Fig. 3 a is a high-pressure side overcurrent monitoring circuit, by resistance R 7 series diode D4, resistance R 8 series diode D5, resistance R 9 series diode D6, after linking together, the negative pole of diode D4, D5, D6 connects capacitor C 1, resistance R 10, adjustable resistance R11 connects resistance R 10, diode D7 optocoupler G4 in parallel, and the output terminal 4 of optocoupler G4 is connected to I/O mouth 4 ends of Fig. 8 single-chip microcomputer IC3 and forms; Fig. 3 b is a low pressure end overcurrent monitoring circuit, by resistance R 12 series diode D8, resistance R 13 series diode D9, resistance R 14 series diode D10, after linking together, the negative pole of diode D8, D9, D10 connects capacitor C 2, resistance R 15, adjustable resistance R16 connects resistance R 15, diode D11 optocoupler G5 in parallel, and the output terminal 5 of optocoupler G5 is connected to I/O mouth 5 ends of Fig. 8 single-chip microcomputer IC3 and forms; T1 among the figure---T8 is connected to Fig. 1.
Fig. 4 is a high-pressure side phase shortage observation circuit, and among the figure: Fig. 4 a is A, B phase observation circuit, is composed in series with resistance R 17, R18 by optocoupler G6 is in parallel with diode D12 again, and the output terminal 6 of optocoupler G6 is connected to I/O mouth 6 ends of Fig. 8 single-chip microcomputer IC3; Fig. 4 b is B, C phase observation circuit, is composed in series with resistance R 19, R20 by optocoupler G7 is in parallel with diode D13 again, and the output terminal 7 of optocoupler G7 is connected to I/O mouth 7 ends of Fig. 8 single-chip microcomputer IC3; Fig. 4 c is C, A phase observation circuit, is composed in series with resistance R 21, R22 by optocoupler G8 is in parallel with diode D14 again, and the output terminal 8 of optocoupler G8 is connected to I/O mouth 8 ends of Fig. 8 single-chip microcomputer IC3; A, B, C among the figure, be connected to Fig. 1.
Fig. 5 is low pressure end phase shortage, overvoltage observation circuit, is connected with resistance R 23 with diode D15 parallel connection by optocoupler G9 again, and the output terminal 9 of optocoupler G9 is connected to I/O mouth 9 ends of Fig. 8 single-chip microcomputer IC3; Connected with resistance R 24 with diode D16 parallel connection by optocoupler G10, the output terminal 10 of optocoupler G10 is connected to I/O mouth 10 ends of Fig. 8 single-chip microcomputer IC3 again; Connected with resistance R 25 with diode D17 parallel connection by optocoupler G11, the output terminal 11 of optocoupler G11 is connected to I/O mouth 11 ends of Fig. 8 single-chip microcomputer IC3 again; A, b, c, n are connected to Fig. 1 among the figure.
Fig. 6 is a power circuit, and among the figure: transformer BY1 and diode D24, D25 connect into full-wave rectifying circuit, and rechargeable battery DC resistance in series R40 forms charging circuit, and integrated regulator IC1 (7812) connects capacitor C 3, C4 forms mu balanced circuit.The a of transformer BY1, b two ends are connected to Fig. 1, the output Vcc of power circuit.
Fig. 7 is that the transformer temperature is too high, transformer oil level and pick-proof vibration monitoring circuit.By resistance R 32, adjustable resistance R33, thermistor R34 and resistance R 35 series connection, the base stage of triode BG1 connects thermistor R34 and resistance R 35, the collector of triode BG1 connects optocoupler G15 and diode D21, and the output terminal 15 of optocoupler G15 is connected to I/O mouth 15 ends of Fig. 8 single-chip microcomputer IC3 and forms the too high observation circuit of temperature; By resistance R 36, adjustable resistance R37 and shock sensor ZD series connection, the base stage of triode BG2 connects fuel level sensor ZD and adjustable resistance R37, the collector of triode BG2 connects optocoupler G16 and diode D22, and the output terminal 16 of optocoupler G16 is connected to I/O mouth 16 ends of Fig. 8 single-chip microcomputer IC3 and forms pick-proof vibration monitoring circuit; By resistance R 38, fuel level sensor YW and resistance R 39 series connection, the base stage of triode BG3 connects fuel level sensor YW and resistance R 39, the collector of triode BG3 connects optocoupler G17 and diode D23, and the output terminal 17 of optocoupler G17 is connected to I/O mouth 17 ends of Fig. 8 single-chip microcomputer IC3 and forms the oil level observation circuit; Vcc is connected to Fig. 6 in the circuit.
Fig. 8 is signal Processing and transtation mission circuit, and IC3 is single-chip microcomputer (89S51), 1---and the 17th, the I/O input port, capacitor C 5 resistance in series R50 form the reset circuit of IC3, and crystal oscillator TX connects IC3 provides reference clock, and IC4 is the digital transmission module, and IC3 connects IC4; Integrated regulator IC2 (7805) connects the mu balanced circuit of capacitor C 6, C7 composition IC3, and Vcc is connected to Fig. 6; TX1 is an emitting antenna.
Fig. 9 is Data Receiving, storage, demonstration and warning circuit; Digital received module I C6 directly connects computer PC serial ports; Transformer BY2 and diode D27, D28 connect into full-wave rectifying circuit, and integrated regulator IC5 (7812) connects capacitor C 8, C9 forms mu balanced circuit; TX2 is a receiving antenna.The M of transformer BY1, N two ends connect the 220V power supply.
Principle of work:
1, drop switch observation circuit principle: in conjunction with Fig. 1 and Fig. 2 a, A, A ' are connected in parallel on drop switch B1 two ends among Fig. 2 a, and drop switch just often A, A ' two ends does not have potential difference (PD), and not conducting of optocoupler G1 does not promptly have negative signal output; When drop switch falls A when damaging, A ' two ends appearance potential is poor, optocoupler G1 conducting, i.e. negative signal output, IC3 sends fault-signal in Fig. 8; Fig. 2 b, Fig. 2 c are in like manner.
2, high and low pressure side overcurrent monitoring circuit theory: in conjunction with Fig. 1 and Fig. 3 a, among the figure: Fig. 3 a is a high-pressure side overcurrent monitoring circuit, T1, T2, T3, high-tension current inductor L1, the L2 of T7 connection layout 1, L3 among the figure, its output current through resistance R 7, R8, R9 current limliting through diode in series D4, D5, D6, by capacitor C 1 filtering, resistance R 10, adjustable resistance R11 regulates setting value and sends optocoupler G4 to, when the electric current of mutual inductor L1, L2, L3 just often, not conducting of optocoupler G4, optocoupler G4 conducting when surpassing setting value as electric current, IC3 sends fault-signal in Fig. 8; Fig. 3 b in like manner.
3, high-pressure side phase shortage observation circuit: in conjunction with Fig. 1 and Fig. 4 a, among the figure: A, B connection layout 1, monitoring A, B two-phase, its voltage is through resistance R 17, R18 current limliting, diode D12 rectification sends optocoupler G6 to, when A, when B two phase voltages are normal optocoupler G6 conducting and in Fig. 8 IC3 send normal signal; When A, B two-phase voltage reduce time coupling G6 by and in Fig. 8 IC3 send fault-signal; Fig. 4 b, Fig. 4 c are in like manner.
4, low pressure end phase shortage observation circuit: in conjunction with Fig. 1 and Fig. 5; Among the figure: a, b, c, n connection layout 1, its voltage are through resistance R 23, R24, R25 current limliting, and diode D15, D16, D17 rectification also send optocoupler G9, G10, G11 respectively to, to monitor a, b, c three-phase voltage respectively; When a, b, c three-phase voltage all just often, optocoupler G9, G10, the equal conducting of G11 and in Fig. 8 IC3 send normal signal; When a, b, c three-phase voltage when wherein certain lacks mutually, its corresponding optocoupler G9 or G10 or G11 will by and in Fig. 8 IC3 send corresponding fault-signal;
5, power circuit, in conjunction with Fig. 1 and Fig. 6, among Fig. 6: a, b connection layout 1, its voltage 380V is through transformer BY1 step-down, diode D24, D25 rectification, direct current after the rectification, the one tunnel through resistance R 40 to rechargeable battery DC charging, another road via integrated regulator IC1 (7812) connect capacitor C 3, C4 forms the mu balanced circuit voltage stabilizing provides power Vcc to each circuit.As the energy of rechargeable battery DC provides the energy through diode D26 to circuit when occurring having a power failure.
6, too high, transformer oil level of transformer temperature and pick-proof vibration monitoring circuit, in conjunction with Fig. 7, among the figure: temperature is too high by resistance R 32, adjustable resistance R33, thermistor R34 and resistance R 35 series connection, BG1 provides base potential to triode, when temperature is lower than normal value, thermistor R34 is high impedance, the output terminal of not conducting of triode BG1 optocoupler G15 by, when the temperature off-rating, thermistor R34 is Low ESR, the output terminal of triode BG1 conducting optocoupler G15 output electronegative potential and in Fig. 8 I/O mouth 15 ends of single-chip microcomputer IC3 transmit the too high signal of temperature; Pick-proof vibration monitoring circuit, by resistance R 36, adjustable resistance R37 and shock sensor ZD series connection, BG2 provides base potential to triode, when shockproof, shock sensor ZD is Low ESR, the output terminal of not conducting of triode BG2 optocoupler G16 by, when vibrations occurring, shock sensor ZD is high impedance, the output terminal of triode BG2 conducting optocoupler G16 output electronegative potential and in Fig. 8 I/O mouth 16 ends of single-chip microcomputer IC3 transmit and vibration signal occurs; The oil level sensing circuit, by resistance R 38, fuel level sensor YW and resistance R 39 series connection, BG3 provides base current to triode, when the transformer pasta is normal, fuel level sensor YW by, the output terminal of not conducting of triode BG3 optocoupler G17 by, when the transformer oil starvation occurring, fuel level sensor YW conducting, the output terminal of triode BG3 conducting optocoupler G17 output electronegative potential and in Fig. 8 I/O mouth 17 ends of single-chip microcomputer IC3 transmit and fault-signal occurs.
7, signal Processing and transtation mission circuit, in conjunction with Fig. 8, IC3 is single-chip microcomputer (89S51) among the figure, 1---the 17th, the I/O input port, capacitor C 5 resistance in series R50 form the reset circuit of IC3, and crystal oscillator TX connects IC3 provides reference clock.The I/O input port 1 of IC3---17 accept each circuit signal and send digital transmission module I C4 to, are launched by IC4.Integrated regulator IC2 (7805) connects the mu balanced circuit of capacitor C 6, C7 composition IC3, and Vcc is connected to Fig. 6; TX1 is an emitting antenna.
8, Data Receiving, storage, demonstration and warning circuit; In conjunction with Fig. 9, among the figure: digital received module I C6 directly connects computer PC serial ports; Transformer BY2 and diode D27, D28 connect into full-wave rectifying circuit, and integrated regulator IC5 (7812) connects capacitor C 8, C9 forms mu balanced circuit provides power supply to receiver module IC6; TX2 is a receiving antenna.The M of transformer BY1, N two ends connect the 220V power supply.
Claims (2)
1, a kind of transformer multifunctional monitoring system is characterized in that comprising: (1) in the transformer major loop, high-pressure side is separately installed with high-tension current inductor, and low pressure end is separately installed with low-voltage current mutual inductor; (2) being provided with three road drop switch observation circuits in the transformer major loop, is respectively to be composed in series with resistance by optocoupler is in parallel with diode again, and wherein the output terminal of optocoupler is connected to the I/O port of the single-chip microcomputer in signal Processing and the transtation mission circuit; (3) high and low pressure side overcurrent monitoring circuit is: in parallel behind three road resistance difference series diode, connect electric capacity, resistance and diode, optocoupler then, and the output terminal of optocoupler is connected to the I/O port of the single-chip microcomputer in signal Processing and the transtation mission circuit; (4) high-pressure side phase shortage observation circuit is three tunnel adjacent phase observation circuits, is composed in series with resistance by optocoupler is in parallel with diode again, and the output terminal of optocoupler is connected to the I/O port of the single-chip microcomputer in signal Processing and the transtation mission circuit; (5) low pressure end phase shortage observation circuit is connected with resistance with the diode parallel connection by three tunnel optocouplers that connect low pressure end respectively again, is connected to the I/O port of the single-chip microcomputer in signal Processing and the transtation mission circuit respectively by the output terminal of optocoupler; (6) power circuit is to connect into full-wave rectifying circuit by transformer and diode, and the rechargeable battery resistance in series is formed charging circuit, and integrated regulator connects electric capacity and forms mu balanced circuit; (7) the transformer temperature is too high, transformer oil level and pick-proof vibration monitoring circuit comprise: by adjustable resistance, thermistor and resistance series connection, the base stage of triode connects between thermistor and the resistance, the collector of triode connects optocoupler and diode, the output terminal of optocoupler is connected to the I/O port of the single-chip microcomputer in signal Processing and the transtation mission circuit and forms the too high observation circuit of temperature, by resistance, adjustable resistance and shock sensor series connection, the base stage of triode connects shock sensor and resistance, the collector of triode connects optocoupler and diode, the output terminal of optocoupler is connected to the I/O port of the single-chip microcomputer in signal Processing and the transtation mission circuit and forms pick-proof vibration monitoring circuit, by resistance, fuel level sensor and resistance series connection, the base stage of triode connects fuel level sensor and resistance, the collector of triode connects optocoupler and diode, and the output terminal of optocoupler is connected to the I/O port of the single-chip microcomputer in signal Processing and the transtation mission circuit and forms the oil level observation circuit; (8) signal Processing and transtation mission circuit, be to be core with the single-chip microcomputer, comprise the I/O input port, the reset circuit that capacitances in series resistance is formed, crystal oscillator connects single-chip microcomputer and forms clock circuit, the wireless digital transmitter module is connected single-chip microcomputer with emitting antenna, integrated regulator connect electric capacity form single-chip microcomputer mu balanced circuit; (9) Data Receiving, storage, demonstration and warning circuit, the wireless digital receiver module directly is connected the computer serial ports with receiving antenna, and transformer and diode connect into full-wave rectifying circuit, and integrated regulator connects electric capacity and forms mu balanced circuit.
2, transformer multifunctional monitoring system according to claim 1 is characterized in that: described wireless digital transmits and receives module and comprises GPS, GSM or CDMA data transfer mode.
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| CN2008100149059A CN101256211B (en) | 2008-03-31 | 2008-03-31 | Transformer multifunctional monitoring system |
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| CN2008100149059A CN101256211B (en) | 2008-03-31 | 2008-03-31 | Transformer multifunctional monitoring system |
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| CN101256211B CN101256211B (en) | 2011-10-05 |
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| CN102213734A (en) * | 2010-04-06 | 2011-10-12 | 陈家斌 | Phase-missing remote alarm for distribution transformer |
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| CN103399216A (en) * | 2013-07-31 | 2013-11-20 | 襄垣县树元电器有限公司 | Remote monitoring and alarming device for high-voltage phase lack of transformer |
| CN103364647A (en) * | 2013-07-31 | 2013-10-23 | 襄垣县树元电器有限公司 | Device for detecting high voltage default phase of transformer |
| CN103954372A (en) * | 2014-05-13 | 2014-07-30 | 国家电网公司 | Oil-immersed transformer overheat alarm circuit system |
| CN104215825A (en) * | 2014-08-20 | 2014-12-17 | 国家电网公司 | Comprehensive online monitoring system for power transformer |
| CN104332009A (en) * | 2014-11-25 | 2015-02-04 | 山东屹歌智能科技有限公司 | Burglar alarm device and burglar alarm monitoring method of transformer |
| CN105258819A (en) * | 2015-10-22 | 2016-01-20 | 杭州鸿程科技有限公司 | Transformer temperature monitoring device |
| CN107132473A (en) * | 2017-05-17 | 2017-09-05 | 肇庆三向教学仪器制造有限公司 | A kind of low-voltage intelligent monitoring terminal |
| CN109559880A (en) * | 2018-11-06 | 2019-04-02 | 国网山东省电力公司龙口市供电公司 | A kind of Intelligent distribution transformer |
| WO2020259415A1 (en) * | 2019-06-26 | 2020-12-30 | 山东电工电气集团智能电气有限公司 | Transformer monitoring method and device and storage medium |
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| Publication number | Publication date |
|---|---|
| CN101256211B (en) | 2011-10-05 |
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Assignee: Zhejiang Auspicious Electric Co., Ltd. of Dragon Assignor: Liu Renchen Contract record no.: 2012330000104 Denomination of invention: Transformer multifunctional monitoring system Granted publication date: 20111005 License type: Exclusive License Open date: 20080903 Record date: 20120323 |
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