CN208207187U - A kind of DC current transformer detector and on-site detecting device - Google Patents

A kind of DC current transformer detector and on-site detecting device Download PDF

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Publication number
CN208207187U
CN208207187U CN201820931188.5U CN201820931188U CN208207187U CN 208207187 U CN208207187 U CN 208207187U CN 201820931188 U CN201820931188 U CN 201820931188U CN 208207187 U CN208207187 U CN 208207187U
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current transformer
module
pin
detector
model
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程昱舒
程改萍
张强
任露莹
崔二萍
赵清英
高飞
赵杰
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Measurement Centre Of Guo Wang Shanxi Province Utilities Electric Co
State Grid Shanxi Electric Power Co Ltd
Marketing Service Center of State Grid Shanxi Electric Power Co Ltd
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Measurement Centre Of Guo Wang Shanxi Province Utilities Electric Co
State Grid Shanxi Electric Power Co Ltd
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Abstract

The utility model belongs to current mutual inductor testing apparatus technical field, specially a kind of DC current transformer detector and on-site detecting device, wherein the DC current transformer detector includes master controller, Beidou synchronization module, radio-frequency communication module, memory module, screen display module, key module, analogue collection module or digital data acquisition module;The DC current transformer on-site detecting device includes the first DC current transformer detector, the second DC current transformer detector, DC current source, standard DC current transformer.The utility model solves the problems, such as the secondary side output position of tested DC current transformer and standard DC current transformer relatively far away to can not accurately detect tested DC current transformer no-load voltage ratio accuracy, be simultaneously control with standard DC current transformer therefore the error calculation that is detected DC current transformer is relatively reliable, therefore the utility model practical value with higher.

Description

A kind of DC current transformer detector and on-site detecting device
Technical field
The utility model belongs to current mutual inductor testing apparatus technical field, specially a kind of DC current transformer detection Instrument and on-site detecting device.
Background technique
In order to meet the needs of socio-economic development is to electric power resource, while promoting distributing rationally for the energy, China is " ten The Efforts To Develop research of extra-high voltage direct-current transmission technology during First Five-Year Plan ".Currently, China is completed 18 extra-high voltage (500KV- 800KV) DC transmission engineering, transmission capacity is up to 46,380,000 kilowatts, 15008 kilometers of overall length.In extra-high voltage DC transmission system Beginning and end are all alternating current, and intermediate power transmission section is divided into DC current.DC current transformer (DC current transformer packet Primary side and secondary side are included, the primary side includes input terminal and output end, and secondary side includes signal end and ground terminal) as guarantor The main sensors of shield and monitoring transmission system operating status provide important leverage to the safe and stable operation of transmission system, because This, guarantees that the accuracy of DC current transformer no-load voltage ratio is of great significance to the normal operation of extra-high voltage DC transmission system.
When on-site test DC current transformer, due to not can determine that tested DC current transformer and standard DC current Mutual inductor (standard DC current transformer be within effective a period of time by the detection of specific measurement unit after, and to its Accuracy is made that the DC current transformer of proof) distance between secondary side signal output position, therefore can not accurately detect quilt The accuracy of inspection DC current transformer no-load voltage ratio during putting into operation.
Summary of the invention
The utility model in order to solve above-mentioned tested DC current transformer put into operation during can not accurately be examined at the scene The problem of survey, provides a kind of DC current transformer detector and on-site detecting device.
The technical scheme in the invention for solving the technical problem is: the output signal of the tested DC current transformer There are digital quantity signal and analog signals, therefore the DC current transformer detector in the utility model can receive analog quantity letter Number or digital quantity signal.
If detected DC current transformer output is analog signals, the DC current transformer detector The Beidou synchronization module of master controller, model ATGM332D including model ADSP-21483, model CC1101 are penetrated Frequency communication module, the memory module of model SDV700, screen display module, the model of model NL6448BC20-21C The key module and analogue collection module of ZLG7290B;The analogue collection module includes the signal tune of model AD620 The analog-digital converter of module and model AD7760 is managed, analog signals are inputted from the port IN+ of signal conditioning module, and signal The port OUTPUT of conditioning module is connected to the port Vin+ of analog-digital converter;RD/WR, DRDY, MCLK, CS of analog-digital converter Pin is connect with P2.6, P2.7, P2.8, P2.9 pin of master controller respectively, RXD1, TXD1 pipe of the Beidou synchronization module Foot is connect with P7.5, P7.6 pin of master controller respectively, SI, SO, SCLK, CS pin difference of the radio-frequency communication module Connect with the P3.0-P3.3 pin of master controller, PWCLT, BUSY, TXD, RXD pin of the memory module respectively with master control The P4.6-P4.9 pin of device processed connects, the screen display module by SCLK ±, D0 ±, D1 ±, D2 ±, D3 ± respectively and master control The P8.0-P8.9 pin of device processed connects, RX, TX pin of the key module respectively with P5.0, P5.1 pin of master controller Connection.It is 4V that the analog quantity voltage of standard DC current transformer and tested DC current transformer, which exports rated value,.Wherein mould Analog quantity acquisition module acquires the analog signals of the secondary side of DC current transformer, and analog signals are passed through signal condition For module transfer to analog-digital converter, analog signals have noise, the signal in the front signal for being transmitted to signal conditioning module Conditioning module can effectively filter out the noise in analog signals and be adjusted to the volt value range of analog signals, make mould The volt value range of analog quantity signal meets the required volt value range of analog-digital converter input, and the analog-digital converter believes analog quantity It number is converted to digital signal and is sent to master controller;Temporal information can be transferred to master controller by the Beidou synchronization module And operational mode (BD time service mode, GPS time service mode and the BD/GPS joint of Beidou synchronization module also can be set in master controller Time service mode) and time service mode (static time service and positioning time service), master controller marks the temporal information from the mould On the analog signals that analog quantity acquisition module is sent, thus target analog signals when having obtained having.
If detected DC current transformer output is analog signals, a kind of use described in the utility model In the on-site detecting device of above-mentioned DC current transformer detector, the sampling module of DC current transformer detector is mould Analog quantity acquisition module, and the DC current transformer detector has two i.e. the first DC current transformer detector and second It is analog signals that DC current transformer detector, which further includes DC current source, output signal in the on-site detecting device, Standard DC current transformer, the DC current source, standard DC current transformer primary side and tested DC current The primary side of mutual inductor is connected in series, the signal end of the standard DC current transformer and the first DC current transformer detector Analogue collection module be connected, the analogue collection module of the second DC current transformer detector is connected to tested The signal end of DC current transformer, the output signal of the tested DC current transformer is analog signals, therefore the mark The output signal of quasi- DC current transformer is also analog signals.When tested DC current transformer needs to carry out accuracy inspection When survey, transmission line of electricity where tested DC current transformer is had a power failure first, then by tested DC current transformer and transmission of electricity Route disconnects, by the primary side of the primary side of tested DC current transformer and DC current source and standard DC current transformer It is connected in series, the first DC current transformer detector and the second DC current transformer detector are each responsible for standard DC current The acquisition and processing of the analog signals of the secondary side of mutual inductor and tested DC current transformer, first DC current are mutual The Beidou synchronization module of the Beidou synchronization module of sensor detector and the second DC current transformer detector is by respective master The static GPS time service mode of controller selection (samples time service precision and is less than 30ns) while two Beidou synchronization modules, thus Synchronization signal (standard direct current may be implemented in first DC current transformer detector and the second DC current transformer detector The analog signals of the secondary side of current transformer and tested DC current transformer) acquisition, thus the first DC current mutual inductance The markers of the analog signals (standard value) of the secondary side for the standard DC current transformer that device detector test arrives is straight with second The analog signals (tested value) of the secondary side for the tested DC current transformer that galvanic electricity current transformer detector test arrives when Mark identical, the radio-frequency communication module of the first DC current transformer detector and the second DC current transformer detector can be with It sends the signal of one's own side and receives the signal of other side, therefore the first DC current transformer detector and the second DC current transformer The master controller of detector can calculate the error of standard value and tested value, and by error amount by way of percentage It shows in the screen display module of one's own side, is detected according to the first DC current transformer detector and the second DC current transformer The error comparison of instrument may further determine that the reliability of error calculation, and master controller can receive the instruction of key module and handle Corresponding information passes to screen display module and shows and stored in a storage module according to the selection of staff;First DC current The memory module of mutual inductor detector and the second DC current transformer detector can preserve test result.By upper Working principle is stated it is found that above-mentioned function can be realized by simply controlling software in the master controller, therefore is art technology Personnel are easy to accomplish.
Similarly, if the output signal of tested DC current transformer is digital quantity signal, the DC current transformer Detector includes the master controller of model ADSP-21483, the Beidou synchronization module of model ATGM332D, model The radio-frequency communication module of CC1101, the memory module of model SDV700, screen display module, the type of model NL6448BC20-21C Number be ZLG7290B key module and digital data acquisition module;The digital data acquisition module includes model AFBR-5978Z Optical communication module, the protocol resolution module of the Network Interface Module of model DP83640, model K60P144M100SF2; Digital quantity signal from the Rdata ± pin of optical communication module input, Tdata+, Tdata- pin of optical communication module respectively with net RD+, RD- pin of network interface module connects, the RXD [3:0] of the MII interface of the Network Interface Module respectively with agreement solution Analyse module P109, P106, P105, P104 pin connection, the TXD [3:0] of the MII interface of the Network Interface Module respectively with P127, P131, P132, P133 pin of protocol resolution module connect, the TX_ER of the MII interface of the Network Interface Module, RX_ER, TX_EN, RX_DV, TX_CLK, RX_CLK, CRS, COL pin respectively with P81, P83 of protocol resolution module, P82, The connection of P84, P110, P128, P51, P52 pin, EZP_DI, EZP_DO, EZP_CLK, EZP_CS of the protocol resolution module Pin is connect with P3.6, P3.7, P3.8, P3.9 pin of master controller ADSP-21483 respectively;The Beidou synchronization module RXD1, TXD1 pin are connect with P7.5, P7.6 pin of master controller respectively, SI, SO, SCLK of the radio-frequency communication module , CS pin connect respectively with the P3.0-P3.3 pin of master controller, PWCLT, BUSY, TXD, RXD pin of the memory module Connect respectively with the P4.6-P4.9 pin of master controller, the screen display module by SCLK ±, D0 ±, D1 ±, D2 ±, D3 ± Connect respectively with the P8.0-P8.9 pin of master controller, RX, TX pin of the key module respectively with master controller The connection of P5.0, P5.1 pin.The output digital quantity rated value of standard DC current transformer and tested DC current transformer is 2D41H.The wherein digital quantity signal of the secondary side of digital data acquisition module acquisition DC current transformer, the digital quantity signal It is optical signal when being exported from standard DC current transformer and tested DC current transformer, optical signal is turned by optical communication module Change electric signal into, and lossless transmission may be implemented in optical communication module, the digital quantity signal passes through digital data acquisition module The required range of master controller input is brought to after processing;Temporal information can be transferred to master by the Beidou synchronization module Operational mode (BD time service mode, GPS time service mode and the BD/ of Beidou synchronization module also can be set in controller and master controller GPS joint time service mode) and time service mode (static time service and positioning time service), master controller by the temporal information mark from On the digital quantity signal that the digital data acquisition module is sent, thus target digital quantity signal when having obtained having.
If the output signal of tested DC current transformer is digital quantity signal, one kind described in the utility model is used The sampling module of the on-site detecting device of above-mentioned DC current transformer detector, the DC current transformer detector is Digital data acquisition module, and the DC current transformer detector has two i.e. the first DC current transformer detector and Two DC current transformer detectors, the on-site detecting device further include DC current source, output signal be digital quantity signal Standard DC current transformer, the DC current source, standard DC current transformer primary side and tested DC current The primary side of mutual inductor is connected in series, the signal end of the standard DC current transformer and the first DC current transformer detector Digital data acquisition module be connected, the digital data acquisition module of the second DC current transformer detector is connected to tested The signal end of DC current transformer, the output signal of the tested DC current transformer is digital quantity signal, therefore the mark The output signal of quasi- DC current transformer is also digital quantity signal.DC current transformer on-site detecting device examines side digital quantity The working principle of signal is identical as the detection working principle of analog signals.
Using a kind of DC current transformer on-site detecting device described in the utility model to tested DC current mutual inductance Device carry out on-site test when, if the tested DC current transformer secondary side output signal be analog signals, need with Secondary side output signal is similarly the standard DC current transformer of analog signals for comparison, eventually by direct comparison method meter Tested error of the DC current transformer relative to standard DC current transformer is calculated, to pass through the mutual inductance of standard DC current The no-load voltage ratio of device calculates the ratio error of tested DC current transformer;If the tested DC current transformer secondary side is defeated Signal is digital quantity signal out, then needs to be similarly the standard DC current transformer of digital quantity signal with secondary side output signal It is final that tested DC current transformer is equally calculated relative to standard DC current transformer by direct comparison method for comparison Error, to calculate the ratio error of tested DC current transformer by the no-load voltage ratio of standard DC current transformer.
The beneficial effects of the utility model are: the first DC current transformer detector and the inspection of the second DC current transformer Surveying instrument may be implemented remote synchronous sampling, solve the secondary of tested DC current transformer and standard DC current transformer Side output position relatively far away to can not accurately detect tested DC current transformer no-load voltage ratio accuracy the problem of, while with mark Quasi- DC current transformer is control therefore the error calculation of tested DC current transformer is relatively reliable, and the utility model institute The method for the calculating error stated is simple to operation, therefore the utility model practical value with higher.
Detailed description of the invention
A kind of Fig. 1 structural representation of DC current transformer detector (detection analog signals) described in the utility model Figure.
The structural schematic diagram of Fig. 2 analogue collection module described in the utility model.
A kind of Fig. 3 structural representation of DC current transformer detector (detection digital quantity signal) described in the utility model Figure.
The structural schematic diagram of Fig. 4 digital data acquisition module described in the utility model.
A kind of Fig. 5 structural schematic diagram of DC current transformer on-site detecting device described in the utility model.
Specific embodiment
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be practical to this Novel technical solution is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, Rather than whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creativeness Obtained every other embodiment under the premise of labour, belongs to the range that the utility model is protected.
Referring to attached drawing 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, now to a kind of DC current transformer detection provided by the utility model Instrument and on-site detecting device are illustrated.
The output signal of the tested DC current transformer has a digital quantity signal and analog signals, therefore the utility model In DC current transformer detector can receive analog signals or digital quantity signal.
If detected DC current transformer output is analog signals, as shown in Fig. 1, the DC current Mutual inductor detector includes the master controller of model ADSP-21483, the Beidou synchronization module of model ATGM332D, model For the radio-frequency communication module of CC1101, the memory module of model SDV700, the screen display module of model NL6448BC20-21C, The key module and analogue collection module of model ZLG7290B;As shown in Fig. 2, the analogue collection module includes model For the signal conditioning module of AD620 and the analog-digital converter of model AD7760, IN+ of the analog signals from signal conditioning module Port input, and the port OUTPUT of signal conditioning module is connected to the port Vin+ of analog-digital converter;The RD/ of analog-digital converter WR, DRDY, MCLK, CS pin are connect with P2.6, P2.7, P2.8, P2.9 pin of master controller respectively, the synchronous mould of the Beidou RXD1, TXD1 pin of block are connect with P7.5, P7.6 pin of master controller respectively, SI, SO of the radio-frequency communication module, SCLK, CS pin are connect with the P3.0-P3.3 pin of master controller respectively, PWCLT, BUSY of the memory module, TXD, RXD pin is connect with the P4.6-P4.9 pin of master controller respectively, the screen display module by SCLK ±, D0 ±, D1 ±, D2 ±, D3 ± connect with the P8.0-P8.9 pin of master controller respectively, RX, TX pin of the key module respectively with main control P5.0, P5.1 pin of device connect.The output of the analog quantity voltage of standard DC current transformer and tested DC current transformer Rated value is 4V.The wherein analog signals of the secondary side of analogue collection module acquisition DC current transformer, and will simulation It measures signal and analog-digital converter is transmitted to by signal conditioning module, analog signals are in the front signal for being transmitted to signal conditioning module In have noise, the signal conditioning module can effectively filter out the noise in analog signals and the volt value to analog signals Range is adjusted, and the volt value range of analog signals is made to meet the required volt value range of analog-digital converter input, the mould Analog signals are converted to digital signal and are sent to master controller by number converter;The Beidou synchronization module can be by the time Information is transferred to master controller and master controller also can be set the operational mode of Beidou synchronization module (BD time service mode, GPS are awarded When mode and BD/GPS joint time service mode) and time service mode (static time service and positioning time service), master controller is by the time Information flag from the analog signals that the analogue collection module is sent, thus obtained with when target analog quantity Signal.
If detected DC current transformer output is analog signals, as shown in figure 5, described in the utility model A kind of on-site detecting device using above-mentioned DC current transformer detector, the DC current transformer detector Sampling module be analogue collection module, and the DC current transformer detector has two i.e. the first DC current mutual inductance Device detector and the second DC current transformer detector, the on-site detecting device further include DC current source, output signal For the standard DC current transformer of analog signals, the DC current source, standard DC current transformer primary side with The primary side of tested DC current transformer is connected in series, the signal end and the first DC current of the standard DC current transformer The analogue collection module of mutual inductor detector is connected, the analog acquisition mould of the second DC current transformer detector Block is connected to the signal end of tested DC current transformer, and the output signal of the tested DC current transformer is analog quantity letter Number, therefore the output signal of the standard DC current transformer is also analog signals.When tested DC current transformer needs When carrying out accuracy detection, transmission line of electricity where tested DC current transformer is had a power failure first, then by tested DC current Mutual inductor and transmission line of electricity disconnect, and the primary side of tested DC current transformer and DC current source and standard DC current is mutual The primary side of sensor is connected in series, and the first DC current transformer detector and the second DC current transformer detector are each responsible for The acquisition and processing of the analog signals of the secondary side of standard DC current transformer and tested DC current transformer, described The Beidou synchronization module of the Beidou synchronization module of one DC current transformer detector and the second DC current transformer detector Time service precision (it is small to be sampled by respective master controller selection static GPS time service mode while two Beidou synchronization modules In 30ns), so that synchronous letter may be implemented in the first DC current transformer detector and the second DC current transformer detector The acquisition of number (analog signals of the secondary side of standard DC current transformer and tested DC current transformer), thus first The analog signals (standard value) of the secondary side for the standard DC current transformer that DC current transformer detector test arrives The analog signals of the secondary side for the tested DC current transformer that markers and the second DC current transformer detector test arrive The markers of (tested value) is identical, and the radio frequency of the first DC current transformer detector and the second DC current transformer detector is logical News module can send the signal of one's own side and receive the signal of other side, therefore the first DC current transformer detector and second is directly The master controller of galvanic electricity current transformer detector can calculate the error of standard value and tested value, and error amount is passed through hundred The form of score is shown in the screen display module of one's own side, according to the first DC current transformer detector and the second direct current The error comparison of current transformer detector may further determine that the reliability of error calculation, and master controller can receive key mould The instruction of block and corresponding information pass to screen display module show and according to the selection of staff storage in a storage module; The memory module of first DC current transformer detector and the second DC current transformer detector can be by test result It preserves.By above-mentioned working principle it is found that above-mentioned function can be realized by simply controlling software in the master controller, therefore It is easy to accomplish for those skilled in the art.
Similarly, if the output signal of tested DC current transformer is digital quantity signal, as shown in figure 3, the direct current Current transformer detector include the master controller of model ADSP-21483, model ATGM332D Beidou synchronization module, The radio-frequency communication module of model CC1101, the memory module of model SDV700, the screen display of model NL6448BC20-21C Module, the key module and digital data acquisition module of model ZLG7290B;As shown in figure 4, the digital data acquisition module packet Include the optical communication module of model AFBR-5978Z, the Network Interface Module of model DP83640, model The protocol resolution module of K60P144M100SF2;Digital quantity signal is inputted from the Rdata ± pin of optical communication module, optical communication mould Tdata+, Tdata- pin of block are connect with RD+, RD- pin of Network Interface Module respectively, the Network Interface Module The RXD [3:0] of MII interface is connect with P109, P106, P105, P104 pin of protocol resolution module respectively, and the network connects The TXD [3:0] of the MII interface of mouth mold block is connect with P127, P131, P132, P133 pin of protocol resolution module respectively, described TX_ER, RX_ER, TX_EN, RX_DV, TX_CLK, RX_CLK, CRS, COL pin of the MII interface of Network Interface Module are distinguished It is connect with P81, P83, P82, P84, P110, P128, P51, P52 pin of protocol resolution module, the protocol resolution module EZP_DI, EZP_DO, EZP_CLK, EZP_CS pin P3.6, P3.7, P3.8, P3.9 with master controller ADSP-21483 respectively Pin connection;RXD1, TXD1 pin of the Beidou synchronization module are connect with P7.5, P7.6 pin of master controller respectively, institute SI, SO, SCLK, CS pin for stating radio-frequency communication module are connect with the P3.0-P3.3 pin of master controller respectively, the storage PWCLT, BUSY, TXD, RXD pin of module are connect with the P4.6-P4.9 pin of master controller respectively, and the screen display module is logical Cross SCLK ±, D0 ±, D1 ±, D2 ±, D3 ± connect respectively with the P8.0-P8.9 pin of master controller, the key module RX, TX pin are connect with P5.0, P5.1 pin of master controller respectively.Standard DC current transformer and tested DC current are mutual The output digital quantity rated value of sensor is 2D41H.Wherein digital data acquisition module acquires the secondary side of DC current transformer Digital quantity signal is believed when the digital quantity signal is exported from standard DC current transformer and tested DC current transformer for light Number, optical signal is converted into electric signal by optical communication module, and lossless transmission, the digital quantity may be implemented in optical communication module The required range of master controller input is brought to after the processing that signal passes through digital data acquisition module;The synchronous mould of the Beidou Temporal information can be transferred to master controller by block and master controller also can be set the operational mode of Beidou synchronization module (BD is awarded When mode, GPS time service mode and BD/GPS joint time service mode) and time service mode (static time service and positioning time service), main control Device marks the temporal information from the digital quantity signal that the digital data acquisition module is sent, to be had When target digital quantity signal.
If the output signal of tested DC current transformer is digital quantity signal, as shown in figure 5, described in the utility model A kind of on-site detecting device using above-mentioned DC current transformer detector, the DC current transformer detector Sampling module is digital data acquisition module, and the DC current transformer detector has two i.e. the first DC current transformer Detector and the second DC current transformer detector, the on-site detecting device further include that DC current source, output signal are The standard DC current transformer of digital quantity signal, the primary side and quilt of the DC current source, standard DC current transformer The primary side of inspection DC current transformer is connected in series, and the signal end and the first DC current of the standard DC current transformer are mutual The digital data acquisition module of sensor detector is connected, the digital data acquisition module of the second DC current transformer detector It is connected to the signal end of tested DC current transformer, the output signal of the tested DC current transformer is digital quantity letter Number, therefore the output signal of the standard DC current transformer is also digital quantity signal.DC current transformer on-site test dress The working principle for setting inspection side digital quantity signal is identical as the detection working principle of analog signals.
Using a kind of DC current transformer on-site detecting device described in the utility model to tested DC current mutual inductance Device carry out on-site test when, if the tested DC current transformer secondary side output signal be analog signals, need with Secondary side output signal is similarly the standard DC current transformer of analog signals for comparison, eventually by direct comparison method meter Tested error of the DC current transformer relative to standard DC current transformer is calculated, to pass through the mutual inductance of standard DC current The no-load voltage ratio of device calculates the ratio error of tested DC current transformer;If the tested DC current transformer secondary side is defeated Signal is digital quantity signal out, then needs to be similarly the standard DC current transformer of digital quantity signal with secondary side output signal It is final that tested DC current transformer is equally calculated relative to standard DC current transformer by direct comparison method for comparison Error, to calculate the ratio error of tested DC current transformer by the no-load voltage ratio of standard DC current transformer.
The embodiments of the present invention is explained in detail above in conjunction with attached drawing, but the utility model is not limited to Above embodiment can also not depart from the utility model within the knowledge of a person skilled in the art It is made a variety of changes under the premise of objective.

Claims (3)

1. a kind of DC current transformer detector, it is characterised in that: master controller, model including model ADSP-21483 For the Beidou synchronization module of ATGM332D, the radio-frequency communication module of model CC1101, the memory module of model SDV700, type Number be NL6448BC20-21C screen display module, the key module of model ZLG7290B and analogue collection module or digital quantity Acquisition module;The analogue collection module includes the signal conditioning module of model AD620 and the modulus of model AD7760 Converter, analog signals are inputted from the port IN+ of signal conditioning module, and the port OUTPUT of signal conditioning module is connected to The port Vin+ of analog-digital converter, RD/WR, DRDY, MCLK, CS pin of analog-digital converter respectively with the P2.6 of master controller, The connection of P2.7, P2.8, P2.9 pin;The digital data acquisition module includes optical communication module, the type of model AFBR-5978Z Number for the Network Interface Module of DP83640, model K60P144M100SF2 protocol resolution module;Digital quantity signal is logical from light Interrogate module Rdata ± pin input, Tdata+, Tdata- pin of optical communication module respectively with the RD+ of Network Interface Module, RD- pin connection, the RXD [3:0] of the MII interface of the Network Interface Module respectively with the P109 of protocol resolution module, P106, P105, P104 pin connection, the TXD [3:0] of the MII interface of the Network Interface Module respectively with protocol resolution module The connection of P127, P131, P132, P133 pin, TX_ER, RX_ER of the MII interface of the Network Interface Module, TX_EN, RX_DV, TX_CLK, RX_CLK, CRS, COL pin respectively with P81, P83 of protocol resolution module, P82, P84, P110, P128, P51, P52 pin connection, EZP_DI, EZP_DO, EZP_CLK, EZP_CS pin of the protocol resolution module respectively with master control P3.6, P3.7, P3.8, P3.9 pin of device ADSP-21483 processed connects;RXD1, TXD1 pin of the Beidou synchronization module point Do not connect with P7.5, P7.6 pin of master controller, SI, SO, SCLK, CS pin of the radio-frequency communication module respectively with master The P3.0-P3.3 pin of controller connects, PWCLT, BUSY, TXD, RXD pin of the memory module respectively with master controller The connection of P4.6-P4.9 pin, the screen display module by SCLK ±, D0 ±, D1 ±, D2 ±, D3 ± respectively and master controller The connection of P8.0-P8.9 pin, RX, TX pin of the key module connect with P5.0, P5.1 pin of master controller respectively.
2. a kind of on-site detecting device using DC current transformer detector as described in claim 1, the direct current The sampling module of current transformer detector be analogue collection module, and the DC current transformer detector have two i.e. First DC current transformer detector and the second DC current transformer detector, it is characterised in that: further include DC current Source, the standard DC current transformer that output signal is analog signals, the DC current source, standard DC current transformer The primary side of primary side and tested DC current transformer be connected in series, the signal end of the standard DC current transformer and The analogue collection module of one DC current transformer detector is connected, the mould of the second DC current transformer detector Analog quantity acquisition module is connected to the signal end of tested DC current transformer.
3. a kind of on-site detecting device using DC current transformer detector as described in claim 1, the direct current The sampling module of current transformer detector be digital data acquisition module, and the DC current transformer detector have two i.e. First DC current transformer detector and the second DC current transformer detector, it is characterised in that: further include DC current Source, the standard DC current transformer that output signal is digital quantity signal, the DC current source, standard DC current transformer The primary side of primary side and tested DC current transformer be connected in series, the signal end of the standard DC current transformer and The digital data acquisition module of one DC current transformer detector is connected, the number of the second DC current transformer detector Word amount amount acquisition module is connected to the signal end of tested DC current transformer.
CN201820931188.5U 2018-06-15 2018-06-15 A kind of DC current transformer detector and on-site detecting device Active CN208207187U (en)

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CN (1) CN208207187U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109521268A (en) * 2018-12-28 2019-03-26 珠海格力电器股份有限公司 Electric energy metering device, ammeter equipment and configuration method
CN111897262A (en) * 2020-07-30 2020-11-06 电子科技大学 Parallel signal acquisition and processing system based on multiple DSP
CN113777551A (en) * 2021-09-09 2021-12-10 贵州电网有限责任公司 Method for checking transformation ratio of current transformer of metering device for special line special power users

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109521268A (en) * 2018-12-28 2019-03-26 珠海格力电器股份有限公司 Electric energy metering device, ammeter equipment and configuration method
CN111897262A (en) * 2020-07-30 2020-11-06 电子科技大学 Parallel signal acquisition and processing system based on multiple DSP
CN111897262B (en) * 2020-07-30 2023-08-11 电子科技大学 Data processing method of parallel signal acquisition processing system based on multiple DSPs
CN113777551A (en) * 2021-09-09 2021-12-10 贵州电网有限责任公司 Method for checking transformation ratio of current transformer of metering device for special line special power users
CN113777551B (en) * 2021-09-09 2024-03-15 贵州电网有限责任公司 Current transformer transformation ratio checking method for special line special power user metering device

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