CN107860961A - Reality monitoring device during high-power transformer core current - Google Patents

Reality monitoring device during high-power transformer core current Download PDF

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Publication number
CN107860961A
CN107860961A CN201711035605.4A CN201711035605A CN107860961A CN 107860961 A CN107860961 A CN 107860961A CN 201711035605 A CN201711035605 A CN 201711035605A CN 107860961 A CN107860961 A CN 107860961A
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CN
China
Prior art keywords
pin
resistance
circuit
display
another termination
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201711035605.4A
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Chinese (zh)
Inventor
赵东
李晓乐
佟丽新
谢菲
苏佰超
康爱民
任伟
白天
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Liaoning Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201711035605.4A priority Critical patent/CN107860961A/en
Publication of CN107860961A publication Critical patent/CN107860961A/en
Withdrawn legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00Arrangements for measuring currents or voltages or for indicating presence or sign thereof

Abstract

The invention belongs to reality monitoring device during a kind of power industry monitoring of equipment device, more particularly to high-power transformer core current.Including power circuit(3), display circuit(1), control circuit(2), sound light alarming circuit(4)And observation circuit(5);Control circuit(2)Include AVRMEGA16 single-chip microcomputers U1, display circuit(1)Include display J, light emitting diode D, resistance R1;Sound light alarming circuit(4)Include resistance R5、R6、R7、R8, triode Q1、Q2、Q3, switch K1、K2、K3, indicator lamp ZD1、ZD2、ZD3, buzzer F;Observation circuit(5)Include iron core TX, amplifier FD, wave filter MAX, resistance R2、R3、R4;Iron core TX other end ground connection, amplifier FD 3 pin connecting resistance R4The other end, resistance R3Another termination wave filter MAX 1 pin, wave filter MAX 2 pin connect power supply VCC, wave filter MAX 3 pin ground connection.Device efficiently solves the online monitoring problem of transformer iron core grounding current, can accurately and timely reflect the changing value of transformer core current, operating personnel is found solve the problems, such as in time.Be advantageous to the production with electric unit, life.

Description

Reality monitoring device during high-power transformer core current
Technical field
The invention belongs to monitored in fact during a kind of power industry monitoring of equipment device, more particularly to high-power transformer core current Device.
Background technology
At present, operationally, its iron core grounding current very little is about several for the high-power transformer in power industry power transmission and transformation For milliampere to tens milliamperes, but when multipoint earthing of iron core failure occurs for transformer, its iron core grounding current will be increased to several amperes Even tens amperes, so as to which local iron core can be caused to overheat, light gas action even grave gas action may be caused to jump when serious Lock, cause economic loss to electric power power transmission and transformation and influence the production and living trouble of user.At present, Field Force is more using pincerlike electricity Flow table clamps iron core grounding line to monitor its curent change, but because the interference of transformer high-intensity magnetic field, measured value are extremely difficult to essence Really, it is also possible to the totally different situation of the multiple measured value difference of same measurement point occur.
The content of the invention
It is an object of the invention to overcome above-mentioned technical deficiency, there is provided a kind of simple in construction, easy to operate, Monitoring Data essence Really reality monitoring device during reliable high-power transformer core current.
The present invention solves the technical scheme that technical problem uses:Wrapped during high-power transformer core current in reality monitoring device Power circuit is included, is characterized in being additionally provided with display circuit, control circuit, sound light alarming circuit and observation circuit in device;Control Circuit includes AVRMEGA16 single-chip microcomputers U1 , its annexation is:Single-chip microcomputer U11-8 pin connect respectively in display circuit show Show device J 7-14 pin, single-chip microcomputer U114-16 pin meet the 4-6 pin of display J in display circuit, single-chip microcomputer U respectively19 pin connect Transformer core TX one end, amplifier FD 1 pin, resistance R in observation circuit2One end, single-chip microcomputer U in control circuit112 Resistance R in pin, 22 pin, 23 pin, 24 pin, 25 pin, sound light alarming circuit5、R6、R7、R8One end, single-chip microcomputer U110 pin connect power supply One end of switch K in circuit, single-chip microcomputer U111 pin meet voltage-stabilized power supply U in power circuit23 pin, electric capacity C1、C2One end, Resistance R in observation circuit4One end and ground connection, single-chip microcomputer U130 pin connect 2 pin, the triode of buzzer F in sound light alarming circuit Q1、Q2、Q3, colelctor electrode, indicator lamp ZD1、ZD2、ZD3One end, voltage-stabilized power supply U in power circuit22 pin, electric capacity C1It is another Resistance R in end, power supply VCC, display circuit1One end;Display circuit includes display J, light emitting diode D, resistance R1;It Annexation be:Display J 16 pin sending and receiving optical diode D positive pole, light emitting diode D negative pole connecting resistance R1It is another One end;Sound light alarming circuit includes resistance R5、R6、R7、R8, triode Q1、Q2、Q3, switch K1、K2、K3, indicator lamp ZD1、ZD2、 ZD3, buzzer F;Their annexation is:Resistance R5Another termination triode Q1Base stage, triode Q1Emitter stage connect Switch K1One end, switch K1Another termination indicator lamp ZD1The other end, resistance R6Another termination triode Q2Base stage, Triode Q2Emitter stage connect switch K2One end, switch K2Another termination indicator lamp ZD2The other end, resistance R7The other end Meet triode Q3Base stage, triode Q3Emitter stage connect switch K3One end, switch K3Another termination indicator lamp ZD3It is another End, resistance R8Another termination buzzer F 1 pin;Observation circuit includes iron core TX, amplifier FD, wave filter MAX, resistance R2、R3、R4;Their annexation is:Iron core TX other end ground connection, amplifier FD 3 pin connecting resistance R4The other end, electricity Hinder R3Another termination wave filter MAX 1 pin, wave filter MAX 2 pin connect power supply VCC, wave filter MAX 3 pin ground connection.
The beneficial effects of the invention are as follows:Reality monitoring device efficiently solves transformer fe during high-power transformer core current The online monitoring problem of core earth current, it can accurately and timely reflect the changing value of transformer core current, make operating personnel Find solve the problems, such as in time.Accident is avoided, is advantageous to personal safety, is advantageous to the production with electric unit, life, has very Good economic benefit and social benefit.
Brief description of the drawings
Illustrated below in conjunction with accompanying drawing with embodiment.
The circuit theory diagrams of reality monitoring device when Fig. 1 is high-power transformer core current.
In figure, 1- display circuits;2- control circuits;3- power circuits;4- sound light alarming circuits;5- observation circuits.
Embodiment
Embodiment, referring to the drawings 1, control circuit 2 includes AVRMEGA16 single-chip microcomputers U1 , its annexation is:Monolithic Machine U11-8 pin meet the 7-14 pin of display J in display circuit 1, single-chip microcomputer U respectively114-16 pin connect respectively in display circuit 1 Display J 4-6 pin, single-chip microcomputer U19 pin connect transformer core TX one end in observation circuit 5, amplifier FD 1 pin, electricity Hinder R2One end, single-chip microcomputer U in control circuit 2112 pin, 22 pin, 23 pin, 24 pin, 25 pin, resistance in sound light alarming circuit 4 R5、R6、R7、R8One end, single-chip microcomputer U110 pin meet one end of the switch K in power circuit 3, single-chip microcomputer U111 pin connect power supply Voltage-stabilized power supply U in circuit 323 pin, electric capacity C1、C2One end, resistance R in observation circuit 54One end and ground connection, single-chip microcomputer U1's 30 pin meet 2 pin of buzzer F in sound light alarming circuit 4, triode Q1、Q2、Q3, colelctor electrode, indicator lamp ZD1、ZD2、ZD3One Voltage-stabilized power supply U in end, power circuit 322 pin, electric capacity C1The other end, power supply VCC, resistance R in display circuit 11One end; Display circuit 1 includes display J, light emitting diode D, resistance R1;Their annexation is:Display J 16 pin sending and receiving Optical diode D positive pole, light emitting diode D negative pole connecting resistance R1The other end.Power circuit 3 includes switching K, battery electricity Source T, electric capacity C1、C2, voltage-stabilized power supply U2;Their annexation is:Switch K another termination battery supply T positive pole, battery Power supply T negative pole meets voltage-stabilized power supply U21 pin;Electric capacity C2The other end.Sound light alarming circuit 4 includes resistance R5、R6、R7、R8、 Triode Q1、Q2、Q3, switch K1、K2、K3, indicator lamp ZD1、ZD2、ZD3, buzzer F;Their annexation is:Resistance R5's Another termination triode Q1Base stage, triode Q1Emitter stage connect switch K1One end, switch K1Another termination indicator lamp ZD1 The other end, resistance R6Another termination triode Q2Base stage, triode Q2Emitter stage connect switch K2One end, switch K2's Another termination indicator lamp ZD2The other end, resistance R7Another termination triode Q3Base stage, triode Q3Emitter stage connect out Close K3One end, switch K3Another termination indicator lamp ZD3The other end, resistance R8Another termination buzzer F 1 pin.Monitoring Circuit 5 includes iron core TX, amplifier FD, wave filter MAX, resistance R2、R3、R4;Their annexation is:Iron core TX's is another One end is grounded, amplifier FD 3 pin connecting resistance R4The other end, resistance R3Another termination wave filter MAX 1 pin, wave filter MAX 2 pin connect power supply VCC, wave filter MAX 3 pin ground connection.
The operation principle of the present invention is that reality monitoring device passes through single-chip microcomputer U during high-power transformer core current1Control, it is right Detected in fact during transformer core TX, when iron core TX electric currents are excessive, pass through indicator lamp ZD1、ZD2、ZD3The finger of three kinds of different colours Show that lamp and buzzer F carry out sound and light alarm, operating personnel can timely processing, avoid accident.

Claims (5)

1. reality monitoring device includes power circuit during a kind of high-power transformer core current(3), it is characterised in that in device also Provided with display circuit(1), control circuit(2), sound light alarming circuit(4)And observation circuit(5).
2. reality monitoring device during high-power transformer core current according to claim 1, it is characterised in that control circuit(2) Include AVRMEGA16 single-chip microcomputers U1 , its annexation is:Single-chip microcomputer U11-8 pin connect display circuit respectively(1)Middle display Device J 7-14 pin, single-chip microcomputer U114-16 pin connect display circuit respectively(1)Middle display J 4-6 pin, single-chip microcomputer U19 pin connect Observation circuit(5)Middle transformer core TX one end, amplifier FD 1 pin, resistance R2One end, control circuit(2)Middle monolithic Machine U112 pin, 22 pin, 23 pin, 24 pin, 25 pin, sound light alarming circuit(4)Middle resistance R5、R6、R7、R8One end, single-chip microcomputer U1 10 pin connect power circuit(3)In switch K one end, single-chip microcomputer U111 pin connect power circuit(3)Middle voltage-stabilized power supply U23 Pin, electric capacity C1、C2One end, observation circuit(5)Middle resistance R4One end and ground connection, single-chip microcomputer U130 pin connect sound and light alarm electricity Road(4)Middle buzzer F 2 pin, triode Q1、Q2、Q3, colelctor electrode, indicator lamp ZD1、ZD2、ZD3One end, power circuit(3) Middle voltage-stabilized power supply U22 pin, electric capacity C1The other end, power supply VCC, display circuit(1)Middle resistance R1One end.
3. reality monitoring device during high-power transformer core current according to claim 1, it is characterised in that display circuit(1) Include display J, light emitting diode D, resistance R1;Their annexation is:Display J 16 pin sending and receiving optical diode D Positive pole, light emitting diode D negative pole connecting resistance R1The other end.
4. reality monitoring device during high-power transformer core current according to claim 1, it is characterised in that sound and light alarm electricity Road(4)Include resistance R5、R6、R7、R8, triode Q1、Q2、Q3, switch K1、K2、K3, indicator lamp ZD1、ZD2、ZD3, buzzer F; Their annexation is:Resistance R5Another termination triode Q1Base stage, triode Q1Emitter stage connect switch K1One End, switch K1Another termination indicator lamp ZD1The other end, resistance R6Another termination triode Q2Base stage, triode Q2's Emitter stage meets switch K2One end, switch K2Another termination indicator lamp ZD2The other end, resistance R7Another termination triode Q3 Base stage, triode Q3Emitter stage connect switch K3One end, switch K3Another termination indicator lamp ZD3The other end, resistance R8 Another termination buzzer F 1 pin.
5. reality monitoring device during high-power transformer core current according to claim 1, it is characterised in that observation circuit(5) Include iron core TX, amplifier FD, wave filter MAX, resistance R2、R3、R4;Their annexation is:Iron core TX another termination Ground, amplifier FD 3 pin connecting resistance R4The other end, resistance R3Another termination wave filter MAX 1 pin, wave filter MAX 2 pin Connect power supply VCC, wave filter MAX 3 pin ground connection.
CN201711035605.4A 2017-10-30 2017-10-30 Reality monitoring device during high-power transformer core current Withdrawn CN107860961A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711035605.4A CN107860961A (en) 2017-10-30 2017-10-30 Reality monitoring device during high-power transformer core current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711035605.4A CN107860961A (en) 2017-10-30 2017-10-30 Reality monitoring device during high-power transformer core current

Publications (1)

Publication Number Publication Date
CN107860961A true CN107860961A (en) 2018-03-30

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CN201711035605.4A Withdrawn CN107860961A (en) 2017-10-30 2017-10-30 Reality monitoring device during high-power transformer core current

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CN (1) CN107860961A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102004182A (en) * 2010-09-29 2011-04-06 思源电气股份有限公司 System and implementation method for monitoring grounding current of transformer core on line
CN102608408A (en) * 2012-03-30 2012-07-25 辽宁省电力有限公司朝阳供电公司 Current monitoring device for transformer core
CN202583315U (en) * 2012-05-19 2012-12-05 保定天腾电气有限公司 On-line monitoring system for transformer iron core grounding current
CN203745090U (en) * 2014-02-25 2014-07-30 中通客车控股股份有限公司 Automobile wire harness capable of monitoring temperature and over-temperature early warning device
CN104316824A (en) * 2014-11-18 2015-01-28 国家电网公司 On-line iron core grounding current monitoring device
CN105203834A (en) * 2015-08-24 2015-12-30 国网山东省电力公司聊城供电公司 Transformer iron core and clamp member current standard exceeding alarm instrument

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102004182A (en) * 2010-09-29 2011-04-06 思源电气股份有限公司 System and implementation method for monitoring grounding current of transformer core on line
CN102608408A (en) * 2012-03-30 2012-07-25 辽宁省电力有限公司朝阳供电公司 Current monitoring device for transformer core
CN202583315U (en) * 2012-05-19 2012-12-05 保定天腾电气有限公司 On-line monitoring system for transformer iron core grounding current
CN203745090U (en) * 2014-02-25 2014-07-30 中通客车控股股份有限公司 Automobile wire harness capable of monitoring temperature and over-temperature early warning device
CN104316824A (en) * 2014-11-18 2015-01-28 国家电网公司 On-line iron core grounding current monitoring device
CN105203834A (en) * 2015-08-24 2015-12-30 国网山东省电力公司聊城供电公司 Transformer iron core and clamp member current standard exceeding alarm instrument

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王振浩等: "MAX274在变压器铁芯在线监测中的应用", 《国外电子元器件》 *

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Application publication date: 20180330