CN108333467A - A kind of SCM Based substation's mutual inductor polarity intelligent detection device - Google Patents
A kind of SCM Based substation's mutual inductor polarity intelligent detection device Download PDFInfo
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- CN108333467A CN108333467A CN201810134662.6A CN201810134662A CN108333467A CN 108333467 A CN108333467 A CN 108333467A CN 201810134662 A CN201810134662 A CN 201810134662A CN 108333467 A CN108333467 A CN 108333467A
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- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 239000013078 crystal Substances 0.000 claims abstract description 11
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- 239000003990 capacitor Substances 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 5
- 238000000691 measurement method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 3
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- 230000006870 function Effects 0.000 description 2
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- 230000001681 protective effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
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Abstract
A kind of SCM Based substation's mutual inductor polarity intelligent detection device, the intelligent detection device are mainly made of microcontroller, power circuit, crystal oscillating circuit, reset circuit, polarity measurement circuit, voice warning circuit and LCD display circuit；The microcontroller is connected with power circuit, crystal oscillating circuit, reset circuit, polarity measurement circuit, voice warning circuit and LCD display circuit respectively.The polarity measurement circuit is made of primary side excitation power supply circuit and secondary side polarity detection circuit.Compared to traditional measurement method, the present invention can not only correctly show the connection polarity of mutual inductor so that test process is more intelligently, conveniently, and working efficiency can be improved, it only needs primary connection that whole operation can be completed, thread-changing need not be repeated, a people can complete.
Description
Technical field
The invention belongs to substation's installation and debugging technical fields, are related to a kind of SCM Based substation's mutual inductor pole
Property intelligent detecting method.Detection applied to mutual inductor polarity during substation's installation and debugging.
Background technology
With the continuous expansion of power system capacity, newly-built substation is also more and more, while as electric system is stepped into
The quickening of Microcomputer paces, old substation's Improvement on Computer engineering are also more and more.Newly-built substation go into operation, new used equipment more
Change and station during, the debugging of secondary circuit, detection work are also increasingly heavy.In substation, secondary current, electricity
It pushes back road and carries key player.As the signal source of transforming plant protecting and TT＆C system, secondary current, voltage circuit are to power transformation
Protection system of standing provides measurement and protective current voltage signal, realizes operation monitoring and defencive function to electric system.
Therefore, each electric current in substation, voltage secondary circuit wiring polarity correctness have for substation safety reliability service it is straight
Connect influence.
Currently, substation mutual inductor polarity detection onsite application it is relatively broad be manual DC detection method, this method
Electric power mutual-inductor first siding ring is connect with dry cell, between dry cell voltage 1.5V to 3V.Electric power mutual-inductor is secondary
Side connects pointer ammeter, waits for closing a slowdown monitoring switch after wiring connects, and at the same time observes the deflection of ampere list index
Situation, pointer positively biased, switch pull open after, pointer is reverse-biased, then illustrate it is secondary it is pendant polar be correct.If throw of pointer direction with it is upper
Situation is stated on the contrary, then illustrating that the mode of connection of secondary side is wrong.This polarity discriminating method of direct current method is used for detecting single
Single-phase voltage or current transformer has many advantages, such as that test philosophy is simple, equipment mode of connection is simple, is adapted to detect
Or judge the polarity of single mutual inductor.Very high to tester's requirement but when this method being used to measure, tester must
Electrical knowledge frequently is solved to be detected.Voltage transformer in substation, the first side winding of current transformer and secondary simultaneously
Side winding causes entirely to test very inconvenient apart from far, if occurring mistake in communication process, can influence testing result, no
Enough intelligence.With the development of the man-machine interface of high speed microprocessing systems, complete interfacing and close friend, mutual inductor integration test
Instrument has been developed into hot spot in recent years.Mutual inductor and different test events for different model have developed different mutual inductances
Device tester.By taking the CTP-100P mutual inductor comprehensive testers of the bold and generous Utilities Electric Co., Ltd.'s production in Wuhan as an example, in test process
Mutual inductor primary side is connected on corresponding jack, is tested on the touchscreen, finally prints testing result, but should
Device price costly, and is merely able to measure single mutual inductor, when the first side winding and secondary side of mutual inductor
Winding relatively far apart when, test just become relative complex.Therefore, be badly in need of it is a kind of it is more intelligent, convenient, whole station institute can be detected
There is the polar device of electric power mutual-inductor secondary side.
Invention content
The present invention provides a kind of SCM Based substation's mutual inductor polarity intelligent detection device, can it is more intelligent,
Conveniently and efficiently detection all electric power mutual-inductors of whole station is secondary pendant polar.
To achieve the above object, the technical solution adopted in the present invention is：
A kind of SCM Based substation's mutual inductor polarity intelligent detection device, the intelligent detection device is mainly by monolithic
Mechanical, electrical source circuit, crystal oscillating circuit, reset circuit, polarity measurement circuit composition；The microcontroller respectively with power circuit, crystal oscillator
Circuit, reset circuit, polarity measurement circuit are connected.
The intelligent detection device further includes voice warning circuit and LCD display circuit composition；The voice warning circuit and
LCD display circuit is connect with the microcontroller respectively.
The polarity measurement circuit is made of primary side excitation power supply circuit and secondary side polarity detection circuit.
The primary side excitation power supply circuit is by charging capacitor C4, single-pole double-throw switch (SPDT) S2, DC5V power supply, first, second
Inductance L3, L4 composition；The cathode of the charging capacitor C4 is connected to the ground, and positive 1 end with the single-pole double-throw switch (SPDT) S2 is connected；
5 ends of the single-pole double-throw switch (SPDT) S2 are connected with one end of the first inductance L3, the other end of first inductance L3 with it is described
DC5V power supplys are connected；3 ends of the single-pole double-throw switch (SPDT) S2 are connected with one end of the second inductance L4, second inductance L4's
The other end is connected with one end of the primary side of detected mutual inductor；The other end for being detected the primary side of mutual inductor is connected to the ground.
The secondary side polarity detection circuit is made of resistance R8, resistance R9, capacitance C3, diode D7；It is detected mutual inductance
One end of the secondary side of device is connected to the ground, and the other end is connected with one end of the resistance R8；The other end of resistance R8 with it is described
One end of capacitance C3 and one end of the diode D7 are connected；The other end of the capacitance C3 is connected to the ground；The diode
The other end of D7 is connected with the P4 mouths of one end of the resistance R9 and microcontroller；The other end of the resistance R9 is connected to the ground.
Mutual inductor is the signal source of transforming plant protecting and TT＆C system, it for transforming plant protecting measuring system provide measurement and
Voltage, the current signal of protection realize operation monitoring and defencive function to electric system.Therefore, each mutual inductor in substation
Polar correctness, which has substation's reliability service, to be directly affected.The present invention is at present using direct current method progress mutual inductor
Implementation process is cumbersome when Check up polarity, precision is not high, ineffective problem, proposes that a kind of SCM Based substation is mutual
Sensor polarity intelligent detection method, this method by quick, the high Precision Processing to excitation power supply and the secondary side data of mutual inductor,
Realize to the Preliminary detection of mutual inductor polarity, microcontroller according to polarity detection circuit export as a result, judging the polarity of mutual inductor
And by voice warning circuit and LCD display circuit, the result of detection is exported.Compared to traditional measurement method, originally
Invention can not only correctly show the connection polarity of mutual inductor so that test process more intelligently, conveniently, and can improve
Working efficiency only needs primary connection that whole operation can be completed, and need not repeat thread-changing, and a people can complete.
Description of the drawings
Fig. 1 is the overall system architecture block diagram of the present invention；
Fig. 2 is the system flow chart of the present invention；
Fig. 3 is the schematic diagram of the polarity measurement circuit of the present invention；
Fig. 4 is the schematic diagram of the voice warning circuit of the present invention；
Fig. 5 is the schematic diagram of the LCD display circuit of the present invention；
Fig. 6 is the singlechip minimum system circuit figure of the present invention；
Fig. 7 is the total system circuit diagram of the present invention.
Specific implementation mode
Invention and its effect are further illustrated below in conjunction with the accompanying drawings.
Referring to Fig.1,7 a kind of SCM Based substation's mutual inductor polarity intelligent detection device, the intelligent measurement dress
It sets and is mainly made of microcontroller, power circuit, crystal oscillating circuit, reset circuit, polarity measurement circuit；The microcontroller respectively with electricity
Source circuit, reset circuit, polarity measurement circuit, is connected crystal oscillating circuit.
Prompt simultaneously for the result for exporting polarity detection circuit, the invention also includes voice warning circuit and
LCD display circuit forms；The voice warning circuit and LCD display circuit are connect with the microcontroller respectively.The voice prompt
Circuit can play the result and procedural information of measurement.And LCD display circuit, it can be believed with the result and process that real-time display measures
Breath.
Voice warning circuit is as shown in Figure 4：Voice cue module is connected for P1 mouthfuls with microcontroller.It should by the control of microcontroller
Voice module can play corresponding voice.The voice module is a MP3 voice playing module, carries loudspeaker and memory,
As long as being in advance stored in corresponding voice in memory in a certain order, can be broadcast by the trigger signal of microcontroller
Put corresponding voice.
LCD display circuit is as shown in Figure 5:The circuit is mainly made of LCD MODULE LCD12864.Liquid crystal display mode
Block LCD12864 is connected for P0 mouthfuls, P2 mouthfuls with microcontroller.By the control of microcontroller, the module can show corresponding prompt message.
With reference to Fig. 3, polarity measurement circuit of the invention is by primary side excitation power supply circuit and secondary side polarity detection circuit
Composition.The primary side excitation power supply circuit is by charging capacitor C4, single-pole double-throw switch (SPDT) S2, DC5V power supply, the first, second inductance
L3, L4 are formed；The cathode of the charging capacitor C4 is connected to the ground, and positive 1 end with the single-pole double-throw switch (SPDT) S2 is connected；It is described
5 ends of single-pole double-throw switch (SPDT) S2 are connected with one end of the first inductance L3, the other end and the DC5V of first inductance L3
Power supply is connected；3 ends of the single-pole double-throw switch (SPDT) S2 are connected with one end of the second inductance L4, and second inductance L4's is another
End is connected with one end of the primary side of detected mutual inductor；The other end for being detected the primary side of mutual inductor is connected to the ground.
The secondary side polarity detection circuit is made of resistance R8, resistance R9, capacitance C3, diode D7；It is detected mutual inductance
One end of the secondary side of device is connected to the ground, and the other end is connected with one end of the resistance R8；The other end of resistance R8 with it is described
One end of capacitance C3 and one end of the diode D7 are connected；The other end of the capacitance C3 is connected to the ground；The diode
The other end of D7 is connected with the P4 mouths of one end of the resistance R9 and microcontroller；The other end of the resistance R9 is connected to the ground.
Singlechip minimum system circuit of the present invention is as shown in Figure 6：The circuit mainly has microcontroller, power circuit, crystal oscillator electricity
Road and reset circuit composition.To carry the microcontroller of program storage（Program storage need not be extended out again）, use
STC89C58, microcontroller supply voltage be direct current 5V, crystal oscillating circuit use no source crystal oscillator form, reset circuit for high level answer
Position circuit, the form being combined using electrification reset and hand-reset.
The flow chart of the present invention is as shown in Fig. 2, its operation principle is as follows：When testing button is not pressed, 5V is straight
Galvanic electricity source is to the capacitor charging as primary side excitation power supply.When testing button is pressed, 5V DC power supplies and charging electricity
Hold and disconnect, discharges to mutual inductor first side winding as soon as capacitance begins through time filter inductance, at this point, in the secondary side of mutual inductor
Produce induced electromotive force.If the polarity of mutual inductor is additive polarity, it is in the electromotive force that the secondary side of mutual inductor induces
Just, the diode current flow in secondary side polarity detection circuit can detect high level at the ends TEST.If the pole of mutual inductor
Property is subtractive polarity, then the electromotive force induced in the secondary side of mutual inductor is negative, the diode in secondary side polarity detection circuit
It is not turned on, low level can be detected at the ends TEST.Microcontroller is by judging the level signal at the ends TEST it may determine that mutually
The polarity of sensor, and corresponding voice prompt is carried out to the result of measurement by control voice cue circuit on this basis, and
The result of measurement is shown by controlling LCD display circuit.
Claims (6)
1. a kind of SCM Based substation's mutual inductor polarity intelligent detection device, it is characterised in that：The intelligent measurement dress
It sets and is mainly made of microcontroller, power circuit, crystal oscillating circuit, reset circuit, polarity measurement circuit；The microcontroller respectively with electricity
Source circuit, crystal oscillating circuit, reset circuit, polarity measurement circuit are connected.
2. a kind of SCM Based substation's mutual inductor polarity intelligent detection device according to claim 1, feature
It is, the intelligent detection device further includes voice warning circuit and LCD display circuit composition；The voice warning circuit and LCD
Display circuit is connect with the microcontroller respectively.
3. a kind of SCM Based substation's mutual inductor polarity intelligent detection device according to claim 1, feature
It is, the polarity measurement circuit is made of primary side excitation power supply circuit and secondary side polarity detection circuit.
4. a kind of SCM Based substation's mutual inductor polarity intelligent detection device according to claim 3, feature
It is, the primary side excitation power supply circuit is by charging capacitor C4, single-pole double-throw switch (SPDT) S2, DC5V power supply, the first, second inductance
L3, L4 are formed；The cathode of the charging capacitor C4 is connected to the ground, and positive 1 end with the single-pole double-throw switch (SPDT) S2 is connected；It is described
5 ends of single-pole double-throw switch (SPDT) S2 are connected with one end of the first inductance L3, the other end and the DC5V of first inductance L3
Power supply is connected；3 ends of the single-pole double-throw switch (SPDT) S2 are connected with one end of the second inductance L4, and second inductance L4's is another
End is connected with one end of the primary side of detected mutual inductor；The other end for being detected the primary side of mutual inductor is connected to the ground.
5. a kind of SCM Based substation's mutual inductor polarity intelligent detection device according to claim 3, feature
It is, the secondary side polarity detection circuit is made of resistance R8, resistance R9, capacitance C3, diode D7；It is detected mutual inductor
One end of secondary side is connected to the ground, and the other end is connected with one end of the resistance R8；The other end of resistance R8 and the capacitance
One end of C3 and one end of the diode D7 are connected；The other end of the capacitance C3 is connected to the ground；The diode D7's
The other end is connected with the P4 mouths of one end of the resistance R9 and microcontroller；The other end of the resistance R9 is connected to the ground.
6. a kind of SCM Based substation's mutual inductor polarity intelligent measurement according to any one of claim 1 to 5
Device, which is characterized in that the microcontroller is the microcontroller of included program storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134662.6A CN108333467A (en) | 2018-02-09 | 2018-02-09 | A kind of SCM Based substation's mutual inductor polarity intelligent detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134662.6A CN108333467A (en) | 2018-02-09 | 2018-02-09 | A kind of SCM Based substation's mutual inductor polarity intelligent detection device |
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| CN108333467A true CN108333467A (en) | 2018-07-27 |
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| CN201810134662.6A Pending CN108333467A (en) | 2018-02-09 | 2018-02-09 | A kind of SCM Based substation's mutual inductor polarity intelligent detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526412A (en) * | 2020-11-17 | 2021-03-19 | 国网湖南省电力有限公司 | Method and system for testing polarity of current transformer of transformer lifting seat |
| CN112731219A (en) * | 2020-12-01 | 2021-04-30 | 国网宁夏电力有限公司检修公司 | Polarity testing method, medium and system of mutual inductor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203705526U (en) * | 2014-02-26 | 2014-07-09 | 珠海迈科电子科技有限公司 | Voltage polarity judgment circuit and system |
| CN204116527U (en) * | 2014-01-24 | 2015-01-21 | 云南电网公司曲靖供电局 | Polarity testing device of current transformer |
| CN205427102U (en) * | 2016-02-26 | 2016-08-03 | 扶绥供电公司 | Current transformer polarity high speed tester |
| CN205809184U (en) * | 2016-07-20 | 2016-12-14 | 江西师范大学 | Simple pulse polarity tester |
| CN106338693A (en) * | 2016-09-05 | 2017-01-18 | 中国神华能源股份有限公司 | UPS battery pack detection device and detection method |
| CN106443523A (en) * | 2015-08-07 | 2017-02-22 | 德昌电机(深圳)有限公司 | Magnetic sensor integrated circuit, signal processing method thereof, motor assembly and application apparatus |
| CN206362879U (en) * | 2016-12-05 | 2017-07-28 | 中国计量大学 | Mutual inductor polarity detection means |
| CN206531912U (en) * | 2017-02-20 | 2017-09-29 | 嘉兴市恒欣电力建设有限公司 | A kind of transformer secondary polarity tester |
-
2018
- 2018-02-09 CN CN201810134662.6A patent/CN108333467A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204116527U (en) * | 2014-01-24 | 2015-01-21 | 云南电网公司曲靖供电局 | Polarity testing device of current transformer |
| CN203705526U (en) * | 2014-02-26 | 2014-07-09 | 珠海迈科电子科技有限公司 | Voltage polarity judgment circuit and system |
| CN106443523A (en) * | 2015-08-07 | 2017-02-22 | 德昌电机(深圳)有限公司 | Magnetic sensor integrated circuit, signal processing method thereof, motor assembly and application apparatus |
| CN205427102U (en) * | 2016-02-26 | 2016-08-03 | 扶绥供电公司 | Current transformer polarity high speed tester |
| CN205809184U (en) * | 2016-07-20 | 2016-12-14 | 江西师范大学 | Simple pulse polarity tester |
| CN106338693A (en) * | 2016-09-05 | 2017-01-18 | 中国神华能源股份有限公司 | UPS battery pack detection device and detection method |
| CN206362879U (en) * | 2016-12-05 | 2017-07-28 | 中国计量大学 | Mutual inductor polarity detection means |
| CN206531912U (en) * | 2017-02-20 | 2017-09-29 | 嘉兴市恒欣电力建设有限公司 | A kind of transformer secondary polarity tester |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526412A (en) * | 2020-11-17 | 2021-03-19 | 国网湖南省电力有限公司 | Method and system for testing polarity of current transformer of transformer lifting seat |
| CN112731219A (en) * | 2020-12-01 | 2021-04-30 | 国网宁夏电力有限公司检修公司 | Polarity testing method, medium and system of mutual inductor |
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Application publication date: 20180727 |