CN205450153U - Wireless tester of CT based on mobile platform - Google Patents

Wireless tester of CT based on mobile platform Download PDF

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Publication number
CN205450153U
CN205450153U CN201620241416.7U CN201620241416U CN205450153U CN 205450153 U CN205450153 U CN 205450153U CN 201620241416 U CN201620241416 U CN 201620241416U CN 205450153 U CN205450153 U CN 205450153U
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CN
China
Prior art keywords
cell phone
wireless
voltage
test instrument
tester
Prior art date
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Active
Application number
CN201620241416.7U
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Chinese (zh)
Inventor
许明
王海滨
平夏
李配配
李垣霖
李鹏
谢骏明
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.)
Xi'an Shuangying Technology Co ltd
State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
Huainan Power Supply Co of State Grid Anhui Electric Power Co Ltd
Original Assignee
Xi'an Shuangying Technology Co ltd
State Grid Liaoning Electric Power Co Ltd
Huainan Power Supply Co of State Grid Anhui 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.)
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Application filed by Xi'an Shuangying Technology Co ltd, State Grid Liaoning Electric Power Co Ltd, Huainan Power Supply Co of State Grid Anhui Electric Power Co Ltd filed Critical Xi'an Shuangying Technology Co ltd
Priority to CN201620241416.7U priority Critical patent/CN205450153U/en
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Publication of CN205450153U publication Critical patent/CN205450153U/en
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Abstract

The utility model discloses a wireless tester of CT based on mobile platform, the wireless tester of this CT includes: lie in the tester host of CT secondary side, include voltage current input, a voltage measurement circuit, current measurement circuit and host computer treater, and lie in the inferior voltage collector in CT one side, and include voltage input end, the 2nd voltage measurement circuit and follow quick -witted treater, still include wireless transceiver, include a wireless transceiver module and the first receiving and dispatching antenna be connected with host computer treater electricity to the 2nd wireless transceiver module and the second receiving and dispatching antenna that reach and be connected from quick -witted treater electricity, wherein, a wireless transceiver module and the 2nd wireless transceiver module communication connection. The utility model provides a present CT tester based on the variable frequency power supply method since a current transformer secondary lateral extent is crossed far and a series of measurements puzzlement of leading to the fact outside, can also carry out the data interaction with mobile platform, realized the extension of tester function and application scope.

Description

CT wireless test instrument based on cell phone platform
Technical field
This utility model relates to a kind of CT wireless test instrument based on cell phone platform.
Background technology
In power system, the property relationship of current transformer is to the correct measurement of power system, correct control and safe and stable operation, the isoparametric test of its no-load voltage ratio, polarity, error, C-V characteristic, remanence coefficient be detection current transformer important evidence, relevant country and industry standard also have clear stipulaties to the test of current transformer, therefore current transformer above-mentioned parameter and characteristic being carried out composite measurement, under various running statuses, the measurement accuracy to current transformer is analyzed significant.
At present, using more in site environment is to use CT tester based on variable-frequency power sources method, i.e. Accelerated Life voltage at secondary side terminal box, measures secondary side and primary side voltage simultaneously, can complete the tests such as CT no-load voltage ratio, polarity simultaneously.
But, in scene, CT primary side distance secondary side farther out, needs the test cable grown just can complete test very much.During implementing this utility model, present inventor recognized that along with the increase of test cable length, the precision of test result will be reduced, strengthen test job amount and reduce the safety of test job.
It is thus desirable to a kind of novel CT tests device, to solve a series of puzzlements that a secondary side distance increasing problem is brought.
Utility model content
The purpose of this utility model is to provide a kind of CT wireless test instrument based on cell phone platform, with the test cable solving a secondary side to be located remotely from each other to bring lengthen caused by problem.
For this, this utility model provides a kind of CT wireless test instrument based on cell phone platform, including: it is positioned at the tester main frame of CT secondary side, including voltage x current input, the first tension measuring circuit, current measurement circuit and the host-processor electrically connected with the first tension measuring circuit and current measurement circuit;And it is positioned at the voltage collector of CT side time, including voltage input end, the second tension measuring circuit and electrically connect with the second tension measuring circuit from machine processor, also include: wireless transmitter, including the first radio receiving transmitting module electrically connected with host-processor and the first dual-mode antenna, and the second radio receiving transmitting module of electrically connecting with from machine processor and the second dual-mode antenna, wherein, the first radio receiving transmitting module and the communication connection of the second radio receiving transmitting module.
Further, above-mentioned tester main frame also includes the mobile communication module being connected with host-processor signal.
Further, above-mentioned wireless transmitter is the wireless transmitter of serial communication.
Further, above-mentioned mobile communication module is bluetooth communication.
Further, above-mentioned mobile communication module is WIFI communication module.
Further, above-mentioned tester main frame and voltage collector are respectively equipped with separate power supply.
Further, above-mentioned tester main frame also includes the display being connected with host-processor signal.
Further, above-mentioned second tension measuring circuit includes for the circuit part exchanging sampling and the circuit part for exchanging after sampling is converted into square wave output.
This utility model CT based on cell phone platform wireless test instrument, by arranging wireless transmitter, not only solve existing CT tester based on variable-frequency power sources method, outside a series of measurement puzzlements caused due to current transformer one secondary side hypertelorism, data interaction can also be carried out further, it is achieved that the extension of tester function and application scope with cell phone platform.
In addition to objects, features and advantages described above, this utility model also has other objects, features and advantages.Below with reference to figure, this utility model is described in further detail.
Accompanying drawing explanation
The Figure of description of the part constituting the application is used for providing being further appreciated by of the present utility model, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the overall structure schematic diagram of the embodiment according to this utility model CT wireless test instrument;
Fig. 2 is the structured flowchart of the tester main frame according to this utility model CT wireless test instrument;
Fig. 3 is the structured flowchart of the voltage collector according to this utility model CT wireless test instrument;
Fig. 4 is the schematic diagram being applied to scene according to this utility model CT wireless test instrument;And
Fig. 5 is the part in the circuit diagram of the second tension measuring circuit according to this utility model CT wireless test instrument;
Fig. 6 is the another part in the circuit diagram of the second tension measuring circuit according to this utility model CT wireless test instrument;
Fig. 7 shows the second circuit part measurement procedure of the tester main frame of the synchronous detecting method according to CT wireless test instrument of the present utility model;And
Fig. 8 shows the measurement procedure of the voltage collector of the synchronous detecting method according to CT wireless test instrument of the present utility model.
Description of reference numerals
1, tester main frame;2, voltage collector;
3, voltage x current input;4, display;
5, mobile communication module;6, the first dual-mode antenna;
7, voltage input end;8, the second dual-mode antenna;
9, the first tension measuring circuit;10, current measurement circuit;
11, host-processor;12, the first radio receiving transmitting module;
13, the second tension measuring circuit;14, from machine processor;
15, the second radio receiving transmitting module;16, cell phone platform.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
By solving the defect that in existing metering system, measuring distance is brought, the CT tester including tester main frame 1 and voltage collector 2 of the prior art is improved, wherein tester main frame and voltage collector configure wireless transmitter, for tester main frame and the data communication of voltage collector.
In conjunction with seeing figures.1.and.2, tester main frame includes the first radio receiving transmitting module 12 and the first dual-mode antenna 6 that the host-processor 11 that voltage x current input the 3, first tension measuring circuit 9, current measurement circuit 10 are connected is connected with host-processor 11 signal with the first tension measuring circuit 9 and current measurement circuit 10 signal.
Wherein, voltage and current signal, through voltage x current input 3, respectively enters the first tension measuring circuit 9 and current measurement circuit 10, and the first tension measuring circuit 9 and current measurement circuit 10 connect host-processor 11;Display 4 signal connects host-processor 11, and mobile communication module 5 connects host-processor 11;First radio receiving transmitting module 12 1 termination host-processor 11 is for data interaction, termination first dual-mode antenna 6;First dual-mode antenna 6 is received and dispatched for wireless signal.
In conjunction with reference to Fig. 1 and Fig. 3, voltage collector 2 include voltage input end the 7, second tension measuring circuit and be connected with the second tension measuring circuit signal from machine processor 14, the second radio receiving transmitting module 15 and the second dual-mode antenna 8 being connected with from machine processor 14 signal.
Wherein, voltage signal inputs through voltage input end 7;Voltage input end 7 connects the second tension measuring circuit 13;Second tension measuring circuit 13 output connects from machine processor 14;One termination of the second radio receiving transmitting module 15 is from machine processor 14, and for data interaction, another terminates the second dual-mode antenna 8;Second dual-mode antenna 8 is received and dispatched for wireless signal.
The tension measuring circuit 13 of voltage collector 2 is also improved by this utility model.Fig. 5 with Fig. 6 shows and exchanges sampling and sine wave is converted into the process circuit of square wave, the input of the circuit part of the outfan map interlinking 6 of the circuit part of Fig. 5.
nullAs shown in Figure 5,This circuit part includes resistance RU1、Voltage transformer pt 1、Feedback resistance RP、Diode D202、Diode D203、Operational amplifier IC201A、Polarized electric capacity C201、Resistance R214、Resistance R01,The wiring relation of each components and parts is as shown in Figure 5,Resistance RU is connected on the input pin 1 of voltage transformer pt 1,Operational amplifier 201A is sign-changing amplifier,In-phase input end 3 ground connection,Reverse input end 2 is connected with the output pin 2 of voltage transformer pt 1,Operational amplifier IC201A outfan 1 is connected to polar capacitor C201,One end of resistance R214 is connected with the negative pole of polarized electric capacity C201,Other end ground connection,Simultaneously,The reverse input end 2 of operational amplifier is by diode D202 parallel with one another、Diode D203 and resistance RO1 ground connection,Diode D202 uses and is just connecing mode,Diode D203 uses reversal connection mode,The outfan 1 of operational amplifier is connected to reverse input end 2 by feedback resistance RP.Exchange sampled functions is achieved by above circuit part.
As shown in Figure 6, this circuit part includes first order operational amplifier IC01, has the adjustable resistance P403 of adjustable end, resistance R411 and resistance R412, second level operational amplifier IC02, resistance R409 and resistance R410.The wiring relation of each components and parts is as shown in Figure 6, the input 6 of operational amplifier is connected to the input in the same direction of operational amplifier IC02, the outfan 6 of operational amplifier ICO2 is by the resistance R409 connected and resistance R410 ground connection, and the terminal voltage of resistance R410 is supplied to the reverse input end 2 of operational amplifier.
The pin 4 and 7 of first order operational amplifier ICO1 meets the positive AV+ of power supply respectively and power supply bears AV-, and between pin 1 and 8, series resistor device P403, the positive AV+ of power supply connect the adjustable end of adjustable resistance P403, has the effect of regulation operational amplifier offset.
Circuit shown in figure 5 above and Fig. 6 has tested use, can realize exchange sampling and AC input is converted into square wave output.
The device of this utility model CT based on cell phone platform wireless test is when measuring:
Tester main frame performs following steps: measurement starts order and is sent to voltage collector by serial radio receiving transmitting module, and open, in the time of agreement, step S10 that tester host side is measured;After arriving the metering cycle set, first calculating step S12 of the frequency of respective passage, amplitude and phase value, measurement result querying command is sent to step S14 of voltage collector by tester main frame;Again by step S16 of the measurement result of wireless module read voltage harvester;And after each passage result is collected calculating storage, step S18 that output shows over the display.
Voltage collector execution following steps: voltage collector is by serial radio receiving transmitting module, after receiving measurement startup order, stop work at present immediately, and in step S20 of the time unlatching arranged with the new round measurement of tester host synchronization;After arriving the metering cycle set, calculate and store step S22 of the frequency of surveyed voltage channel, amplitude and phase value;Wait step S24 of the measurement result querying command of tester main frame;And waiting receive tester main frame measurement result querying command time, storage result is sent to by serial wireless module step S26 of tester main frame, otherwise continues waiting for.
So far each interchannel synchro measure of CT wireless test instrument and the calculating of measurement result are achieved.
The mobile communication module 5 being also equipped with in this tester main frame, for realizing the communication of tester main frame and cell phone platform.On the premise of keeping existing CT tester function, combined with cell phone platform by wireless communication technology, both the defect that in existing metering system, measuring distance is brought had been solved, range of application and the extension of function of equipment can be expanded again by means of the data analysis software for calculation of cell phone platform, improve testing efficiency.
This utility model CT based on cell phone platform wireless test instrument, when not receiving cell phone platform communications command, utonomous working;When receiving cell phone platform communications command, it is operated by order.
This utility model CT based on cell phone platform wireless test instrument, the mobile communication module being equipped with by tester main frame is communicated with cell phone platform;Both sides, according to the communication mode set, such as bluetooth, WIFI, carry out data interaction by the protocol rule of regulation, thus realize Read-write Catrol and the reading of measurement result that CT wireless test instrument is worked by cell phone platform.
Under site environment, the measurement to CT C-V characteristic, by load test source, Current Transformer Secondary side, the voltage signal of the voltage of measurement current transform er secondary side, electric current and primary side, by the calculating of measurement result, analyze and determine the characteristic of this CT.
With reference to Fig. 4, test pill output test power supply, it is loaded into the secondary side of current transformer by the binding post of Current Transformer Secondary side;The tester main frame 1 of CT wireless test instrument is for measuring the secondary side signal of transformer: the both end voltage measuring transformer secondary side and the electric current flow through;Voltage collector 2 is for measuring the both end voltage of this transformer primary side.
During in-site measurement, mobile terminal cell phone platform 16 sends measurement by bluetooth/WIFI to CT wireless test instrument and starts order, after tester main frame 1 receives order by the mobile communication module configured, synchro measure instruction is sent to voltage collector 2, open synchro measure, when arriving certain measurement week after date, voltage collector 2 by measurement result by being wirelessly transmitted to tester main frame 1, tester main frame 1 collects, analyze and calculate the measurement result of the CT each input channel of wireless test instrument, while by measurement result display output, by mobile communication module, transmission measurement result is to mobile terminal cell phone platform 16;After mobile terminal cell phone platform 16 obtains measurement result, can carry out preserving by the data analysis software for calculation installed, print, analyze and the operation such as data sharing.
Compared to traditional CT Testing Instrument for Volt-ampere Characteristic, the proposition of this utility model CT based on cell phone platform wireless test instrument, not only solve existing CT tester based on variable-frequency power sources method, outside a series of measurement puzzlements caused due to current transformer one secondary side hypertelorism;But also have and carry out the hardware capability of data interaction with cell phone platform, utilize the analytical calculation ability of smart mobile phone and good user interface, it is achieved that the extension of tester function and application scope.
In addition, independence in view of the work of this utility model CT wireless test instrument, during on-the-spot CT feature measurement, when achieving CT test, table source is independent, ensure that the synchronicity of each interchannel measurement result, the stimulus that CT secondary side loads is any kind of input signal, it may be assumed that both can be the output of original CT Testing Instrument for Volt-ampere Characteristic, can also manually regulate input for utilizing automatic coupling voltage regulator, the most not affect measurement analysis result.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.

Claims (8)

1. a CT wireless test instrument based on cell phone platform, including:
It is positioned at the tester main frame (1) of CT secondary side, including voltage x current input (3), the first tension measuring circuit (9), current measurement circuit (10) and the host-processor (11) electrically connected with described first tension measuring circuit (9) and current measurement circuit (10);And
It is positioned at the voltage collector (2) of CT side time, including voltage input end (7), the second tension measuring circuit (13) and electrically connect with described second tension measuring circuit (13) from machine processor (14), it is characterized in that, also include:
Wireless transmitter, including the first radio receiving transmitting module (12) electrically connected with described host-processor (11) and the first dual-mode antenna (6), and with described the second radio receiving transmitting module (15) electrically connected from machine processor (14) and the second dual-mode antenna (8), wherein, described first radio receiving transmitting module (12) communicates to connect with described second radio receiving transmitting module (15).
CT wireless test instrument based on cell phone platform the most according to claim 1, it is characterised in that described tester main frame also includes the mobile communication module (5) being connected with described host-processor (11) signal.
CT wireless test instrument based on cell phone platform the most according to claim 1, it is characterised in that described wireless transmitter is the wireless transmitter of serial communication.
CT wireless test instrument based on cell phone platform the most according to claim 1, it is characterised in that described mobile communication module (5) is bluetooth communication.
CT wireless test instrument based on cell phone platform the most according to claim 1, it is characterised in that described mobile communication module (5) is WIFI communication module.
CT wireless test instrument based on cell phone platform the most according to claim 1, it is characterised in that described tester main frame (1) and described voltage collector (2) are respectively equipped with separate power supply.
CT wireless test instrument based on cell phone platform the most according to claim 1, it is characterised in that described tester main frame (1) also includes the display (4) being connected with host-processor signal.
CT wireless test instrument based on cell phone platform the most according to claim 1, it is characterized in that, described second tension measuring circuit (13) includes for the circuit part exchanging sampling and the circuit part for exchanging after sampling is converted into square wave output.
CN201620241416.7U 2016-03-26 2016-03-26 Wireless tester of CT based on mobile platform Active CN205450153U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620241416.7U CN205450153U (en) 2016-03-26 2016-03-26 Wireless tester of CT based on mobile platform

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Application Number Priority Date Filing Date Title
CN201620241416.7U CN205450153U (en) 2016-03-26 2016-03-26 Wireless tester of CT based on mobile platform

Publications (1)

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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105652133A (en) * 2016-03-26 2016-06-08 国家电网公司 CT wireless tester based on cell phone platform and synchronous testing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105652133A (en) * 2016-03-26 2016-06-08 国家电网公司 CT wireless tester based on cell phone platform and synchronous testing method

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