CN201111702Y - Arrester leakage current telemetering device - Google Patents

Arrester leakage current telemetering device Download PDF

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Publication number
CN201111702Y
CN201111702Y CNU2007200440990U CN200720044099U CN201111702Y CN 201111702 Y CN201111702 Y CN 201111702Y CN U2007200440990 U CNU2007200440990 U CN U2007200440990U CN 200720044099 U CN200720044099 U CN 200720044099U CN 201111702 Y CN201111702 Y CN 201111702Y
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China
Prior art keywords
circuit
leakage current
resistance
arrester
current measurement
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Expired - Fee Related
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CNU2007200440990U
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Chinese (zh)
Inventor
李雅南
孙晶云
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NANJING DERUN ELECTRIC CO Ltd
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NANJING DERUN ELECTRIC CO Ltd
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Priority to CNU2007200440990U priority Critical patent/CN201111702Y/en
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Anticipated expiration legal-status Critical
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Abstract

The utility model provides an arrester leakage current remote transfer device to solve the problem of difficult meter reading of an arrester on-line monitor in the prior art, comprising a monitor sampling circuit (1), a pulse input interface circuit (2), a leakage current measurement selection circuit (3), a true effective value converting circuit (4), a single-chip microcomputer circuit (5), a GSM module interface and a peripheral circuit (6) etc., the output lightning pulse signals and the leakage current signals of the monitor sampling circuit (1)are respectively connected with the pulse input interface circuit (2) and the leakage current measurement selection circuit (3), the single-chip microcomputer circuit (5) carries out the selection and the control of all the phases of the leakage current signals which are input into the leakage current measurement selection circuit (3), thus allowing the signals to be accessed to the true effective value converting circuit (4) to carry out the conversion and then the signals are transmitted by the GSM module interface and the peripheral circuit (6). The arrester leakage current remote transfer device can carry out the real-time remote transmission of the leakage current and other data of an arrester at any place.

Description

Leakage current of an arrester teletransmission device
Technical field
The utility model relates to a kind of lightning arrester on-line monitoring device of electric system, particularly relates to a kind of leakage current of an arrester teletransmission device.
Background technology
Along with circuit with the increase of lightning arrester, how to obtain the related datas such as leakage current, action frequency of lightning arrester timely and effectively, become a more and more outstanding problem of electric system.Because each department supply line head, shaft tower distributes wide, and open-air remote districts are especially many.Want to make a copy of the data of these lightning arrester on-line monitoring devices, need expensive manpower and materials, and the cycle is long, efficient is low, very is not inconsistent with the electrical management system of social market economy requirement now.
Summary of the invention
The purpose of this utility model is to address the above problem, and a kind of leakage current of an arrester teletransmission device is provided, and it can be in real time be sent to the electrical management center with remote datas such as the leakage current of the lightning arrester of anywhere, action frequencies.
The utility model adopts following technical scheme to solve technical matters:
A kind of leakage current of an arrester teletransmission device, comprise monitor sample circuit 1, pulse input interface circuit 2, leakage current measurement selection circuit 3, true rms value convertor circuit 4, single chip circuit 5, gsm module interface and peripheral circuit 6 and power circuit 7, lightning arrester current signal MOV A, MOV B, MOV CConnect monitor sample circuit 1, the lightening pulse signal M of monitor sample circuit 1 output A, M B, M CConnect pulse input interface circuit 2 respectively, the leakage current signal C of output A, C B, C CConnect leakage current measurement respectively and select circuit 3, the voltage pulse signal P of pulse input interface circuit 2 outputs A, P B, P COrder sheet machine circuit 5, the control signal Cs of single chip circuit 5 outputs connects gsm module interface and peripheral circuit 6, single chip circuit 5 and gsm module interface and peripheral circuit 6 are by serial line interface RS232 communication signal, gsm module interface and peripheral circuit 6 outputs transmit, the leakage current measurement of single chip circuit 5 outputs is selected control signal K1, K2, K3 also connects leakage current measurement respectively and selects circuit 3, leakage current measurement selects the output signal C1 of circuit 3 to connect true rms value convertor circuit 4, the output signal C2 of true rms value convertor circuit 4 is order sheet machine circuit 5 again, and voltage-stabilized power supply circuit 7 is power supplys of supplying with above-mentioned each circuit working.
Above-mentioned monitor sample circuit 1, comprise the identical A phase monitor sample circuit of circuit structure, B phase monitor sample circuit and C be the monitor sample circuit mutually, it is series at respectively in the late-class circuit of traditional mechanical type monitor, gas-discharge tube G1 with after resistance R 2 is connected again and access sample resistance R 1, the end of the terminating resistor R3 of sample resistance R1, the end of another termination Transient Suppression Diode of resistance R 3 (hereinafter to be referred as the TVS pipe) T1, the other end of TVS pipe T1 and the other end common ground of sample resistance R1 connect pulse input interface circuit 2 and leakage current measurement selection circuit 3 respectively from the other end of resistance R 3.
Above-mentioned leakage current measurement is selected circuit 3, comprise the identical A phase of circuit structure, the B phase, C phase leakage current measurement circuit, the end of the selection control signal K1 connecting resistance R52 of above-mentioned single chip circuit 5 inputs, the base stage of another termination triode Q51 of resistance R 52 and an end of resistance R 53, the emitter common ground of the other end of resistance R 53 and triode Q51, the collector of triode Q51 connects the parallel circuit of being made up of diode and relay K A, the negative electrode of diode with connect power supply again after the parallel circuit of being made up of resistance R 51 and capacitor C 51 is connected, the selection conducting of relay K A control leakage current signal.
Compare with prior art, advantage of the present utility model is:
It can be in real time be sent to the electrical management center with remote datas such as the leakage current of the lightning arrester of anywhere, action frequencies, thereby has greatly improved the efficient of power department safety management lightning arrester, has also saved suitable manpower and materials simultaneously.
Existing, widely used GSM mobile communication network SMS (Short Message Service) that the utility model utilizes is performance and relative cheap charge efficiently, data such as action frequency with the lightning arrester that collects, mode with SMS, directly send on the mobile phone terminal of user's appointment, realized long-range, make a copy of data in real time.
The utility model can embed in large scale industry supervisory system, the unmanned system, satisfies requirements such as the required high reliability of these systems, high real-time and property easy to maintenance, and stable performance, wide coverage, cost performance height.
The utility model has monitoring means timely and effectively at the working condition of the lightning arrester of open-air remote districts, and the operation safely and reliably and the management of power equipment produced active influence, has reduced circuit thunderbolt power outage.
Description of drawings
Fig. 1 is the built-up circuit theory diagram of leakage current of an arrester teletransmission device.
Fig. 2 is the schematic diagram of the monitor sample circuit 1 of leakage current of an arrester teletransmission device.
Fig. 3 is the schematic diagram of the pulse input interface circuit 2 of leakage current of an arrester teletransmission device.
Fig. 4 is that the leakage current measurement of leakage current of an arrester teletransmission device is selected circuit 3 schematic diagrams.
Fig. 5 is the schematic diagram of the true rms value convertor circuit 4 of leakage current of an arrester teletransmission device.
Fig. 6 is single chip circuit 5 theory diagrams of leakage current of an arrester teletransmission device.
Embodiment
Below, describe embodiment of the present utility model in detail with reference to accompanying drawing.
Fig. 1 is the built-up circuit theory diagram of leakage current of an arrester teletransmission device.In Fig. 1, the current signal MOV of lightning arrester A, MOV B, MOV CInsert A phase, B phase, C phase monitor sample circuit respectively, monitor sample circuit 1 adopts the mode of voltage load, with the lightening pulse signal M after the sampling A, M B, M CWith leakage current signal C A, C B, C CSelect in the circuit 3 by pulse input interface circuit 2 and leakage current measurement that special-purpose stube cable is sent in the teletransmission device main frame.Leakage current of an arrester signal C1 by leakage current measurement selects circuit 3 to select is converted to d. c. voltage signal C2 through true rms value convertor circuit 4, is sent to the A/D conversion input end of single chip circuit 5 then, carries out data processing.After the data processing, the startup of single chip circuit 5 usefulness control signal Cs control gsm module interface and peripheral circuit 6 connects gsm module by the RS232 serial line interface measurement data is sent.
Fig. 2 is the circuit theory diagrams of the monitor sample circuit 1 of leakage current of an arrester teletransmission device.Lightning arrester current signal MOV A, MOV B, MOV CEnter monitor; sample resistance R1 connects with traditional mechanical type monitor late-class circuit; gas-discharge tube G1 be attempted by resistance R 1 two ends after resistance R 2 is connected; pressure drop when moving on the R1 to reduce lightning arrester; resistance R 3 exports pulse input interface circuit 2 to and leakage current measurement is selected circuit 3; TVS pipe T1 carries out clamp to the output voltage of sample circuit, the protection late-class circuit.
Fig. 3 is the schematic diagram of the pulse input interface circuit 2 of leakage current of an arrester teletransmission device.This pulse input interface circuit is divided into A phase, B phase, C phase three tunnel, and the circuit on each road is identical, can monitor simultaneously and receive three actuating signals that lightning arrester is imported into.Be that its concrete course of work of example explanation is mutually with A below: when A on the high-voltage transmission circuit has lightning strike accident to take place mutually; be contained in the lightning arrester that A goes up mutually and will produce big current drain protection action, A phase monitor sample circuit correspondingly can be exported a lightening pulse signal M simultaneously ABe sent to pulse input interface circuit in the teletransmission device main frame through cable; through resistance R 101, the further current limliting of R102; the dual overvoltage protection of TVS pipe DV101, voltage dependent resistor (VDR) RV101; the current rectifying and wave filtering circuit that rectifier bridge heap DB101, capacitor C 101 are formed; stabilivolt Z101 amplitude limit passes through photoelectric isolating circuit U101 at last, exports a reverse voltage pulse signal P A, this reverse voltage pulse signal P ABe sent to 8 pin of single chip circuit 5.In like manner, the lightening pulse signal M that produces of the lightning arrester gone up mutually of B phase, C B, M CBehind the pulse input circuit, finally distinguish output voltage pulse signal P B, P C14,15 pin to single-chip microcomputer.
Single-chip microcomputer recognizes any one voltage pulse signal P A, P B, P CAfter, start gsm module interface and peripheral circuit 6, the action frequency of this phase lightning arrester mode with short message is sent.
Leakage current measurement selects circuit 3 referring to Fig. 4, and single-chip microcomputer is by control signal K1, K2, K3, the leakage current signal C that monitor sample circuit 1 is sent A, C B, C C, connect back level true rms value convertor circuit 4 respectively successively, measure in turn.
The current measurement course of work is exemplified below:
Single-chip microcomputer is at first exported control signal K1, makes triode Q51 conducting, and relay K A is by adhesive, the leakage current of an arrester signal C that A phase monitor sample circuit 1 sends AConnect true rms value convertor circuit 4, the output signal C2 after single-chip microcomputer is changed true rms value convertor circuit 4 measures, and measurement result is existed in the inner reservoir of single-chip microcomputer, and release control signal K1 makes leakage current signal C then AAgain be in the state of open circuit.
Repeat above process, again the leakage current of an arrester signal C that respectively B phase, C phase monitor sample circuit is sent B, C CMeasure.At last, start gsm module interface and peripheral circuit 6, the mode of these measurement results with short message sent.
True rms value convertor circuit 4 has adopted the real effective AC/DC conversion special circuit AD736 of U.S. AD company here referring to Fig. 5.The leakage current signal C that it selects circuit 3 to send here leakage current measurement A, C B, C C, carry out the real effective conversion, be converted to d. c. voltage signal C2, directly be sent to A/D analog to digital conversion interface 19 pin of single chip circuit 5.
Single chip circuit 5 has been selected the PIC16F917 single-chip microcomputer of Microchip company here for use referring to Fig. 6, and it is built-in 10 A/D change-over circuit can guarantee the measuring accuracy of leakage current of an arrester fully.D. c. voltage signal C2 after 4 conversions of true rms value convertor circuit is input to 19 pin of single-chip microcomputer, after the processing of the A/D change-over circuit in the single-chip microcomputer, calculate corresponding leakage current values, by control signal Cs gsm module interface and peripheral circuit 6 are started then, with the leakage current values of lightning arrester, data such as separate, send with the mode of short message.After information sent successfully, single-chip microcomputer made gsm module interface and peripheral circuit 6 enter off-mode by control Cs again, and single-chip microcomputer also reenters the sleep state of low-power consumption, waits for the arrival in leakage current measurement cycle next time.
In gsm module interface and peripheral circuit 6, gsm module adopts the TC35I of German SIEMENS (Siemens) company.TC35I receives the module control signal Cs of single-chip microcomputer, processes such as can finishing module startup, RS232 communication, send short message, module is closed.Gsm module must connect the legal SIM card of China Mobile, is subjected to the AT instruction control of single-chip microcomputer, and the mode of data such as the leakage current of lightning arrester and action frequency with mobile phone short message sent.
Voltage-stabilized power supply circuit 7 can guarantee that equipment can work stably in a long term, also can be aided with external power supply and replenish.External power supply can adopt wind energy or sun power to change, and by charging control circuit, battery is charged, and the voltage that comes out from battery can be supplied to each circuit of the utility model.

Claims (3)

1, a kind of leakage current of an arrester teletransmission device is characterized in that,
Comprise monitor sample circuit (1), pulse input interface circuit (2), leakage current measurement selection circuit (3), true rms value convertor circuit (4), single chip circuit (5), gsm module interface and peripheral circuit (6) and power circuit (7), lightning arrester current signal (MOV A, MOV B, MOV C) connect monitor sample circuit (1), the lightening pulse signal (M of monitor sample circuit (1) output A, M B, M C) connect pulse input interface circuit (2), the leakage current signal (C of output respectively A, C B, C C) connect leakage current measurement respectively and select circuit (3), the voltage pulse signal (P of pulse input interface circuit (2) output A, P B, P C) order sheet machine circuit (5), the control signal (Cs) of single chip circuit (5) output connects gsm module interface and peripheral circuit (6), single chip circuit (5) and gsm module interface and peripheral circuit (6) are by serial line interface (RS232) communication signal, gsm module interface and peripheral circuit (6) output transmits, the leakage current measurement of single chip circuit (5) output is selected control signal (K1, K2, K3) also connect leakage current measurement respectively and select circuit (3), leakage current measurement selects the output signal (C1) of circuit (3) to connect true rms value convertor circuit (4), the output signal of true rms value convertor circuit 4 (C2) is order sheet machine circuit (5) again, and voltage-stabilized power supply circuit (7) is a power supply of supplying with above-mentioned each circuit working.
2, leakage current of an arrester teletransmission device according to claim 1 is characterized in that,
Monitor sample circuit (1), comprise the identical A phase monitor sample circuit of circuit structure, B phase monitor sample circuit and C be the monitor sample circuit mutually, it is series at respectively in the late-class circuit of traditional mechanical type monitor, gas-discharge tube (G1) with after resistance (R2) is connected again and access sample resistance (R1), one end of one terminating resistor (R3) of sample resistance (R1), one end of another termination Transient Suppression Diode (T1) of resistance (R3), the other end common ground of the other end of Transient Suppression Diode (T1) and sample resistance (R1) connects pulse input interface circuit (2) respectively and leakage current measurement is selected circuit (3) from the other end of resistance (R3).
3, leakage current of an arrester teletransmission device according to claim 1 is characterized in that,
Leakage current measurement is selected circuit (3), comprise the identical A phase of circuit structure, the B phase, C phase leakage current measurement circuit, one end of selection control signal (K1) connecting resistance (R52) of above-mentioned single chip circuit (5) input, the base stage of another termination triode (Q51) of resistance (R52) and an end of resistance (R53), the emitter common ground of the other end of resistance (R53) and triode (Q51), the collector of triode (Q51) connects the parallel circuit of being made up of diode and relay (KA), the negative electrode of diode with connect power supply again after the parallel circuit of being made up of resistance (R51) and electric capacity (C51) is connected, the selection conducting of relay (KA) control leakage current signal.
CNU2007200440990U 2007-10-12 2007-10-12 Arrester leakage current telemetering device Expired - Fee Related CN201111702Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200440990U CN201111702Y (en) 2007-10-12 2007-10-12 Arrester leakage current telemetering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200440990U CN201111702Y (en) 2007-10-12 2007-10-12 Arrester leakage current telemetering device

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102521954A (en) * 2011-12-07 2012-06-27 诸暨市供电局 Composition circuit of leakage current remote transmitter of lightning arrester
CN102879667A (en) * 2012-09-17 2013-01-16 吉林省泰华电子有限公司 Lightning protection device on-line remote monitoring recorder
CN105223446A (en) * 2015-10-28 2016-01-06 河南开启电力实业有限公司 Lightning arrester remote online monitoring device
CN105699754A (en) * 2016-04-06 2016-06-22 长沙群瑞电子科技有限公司 Leakage current monitoring device for three-phase lightning arrester
CN106646058A (en) * 2016-12-29 2017-05-10 郑州职业技术学院 Online monitoring system for lightning arrester
CN108169548A (en) * 2018-01-29 2018-06-15 西安神电电器有限公司 A kind of arrester on-Line Monitor Device
CN112798981A (en) * 2020-12-29 2021-05-14 江苏航天大为科技股份有限公司 Road traffic system with alternating current monitoring and protecting functions

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102521954A (en) * 2011-12-07 2012-06-27 诸暨市供电局 Composition circuit of leakage current remote transmitter of lightning arrester
CN102879667A (en) * 2012-09-17 2013-01-16 吉林省泰华电子有限公司 Lightning protection device on-line remote monitoring recorder
CN102879667B (en) * 2012-09-17 2014-10-15 吉林省泰华电子有限公司 Lightning protection device on-line remote monitoring recorder
CN105223446A (en) * 2015-10-28 2016-01-06 河南开启电力实业有限公司 Lightning arrester remote online monitoring device
CN105699754A (en) * 2016-04-06 2016-06-22 长沙群瑞电子科技有限公司 Leakage current monitoring device for three-phase lightning arrester
CN106646058A (en) * 2016-12-29 2017-05-10 郑州职业技术学院 Online monitoring system for lightning arrester
CN108169548A (en) * 2018-01-29 2018-06-15 西安神电电器有限公司 A kind of arrester on-Line Monitor Device
CN112798981A (en) * 2020-12-29 2021-05-14 江苏航天大为科技股份有限公司 Road traffic system with alternating current monitoring and protecting functions

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Granted publication date: 20080910

Termination date: 20111012