CN208672790U - Relay-protection tester calibrating installation - Google Patents

Relay-protection tester calibrating installation Download PDF

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Publication number
CN208672790U
CN208672790U CN201820526836.9U CN201820526836U CN208672790U CN 208672790 U CN208672790 U CN 208672790U CN 201820526836 U CN201820526836 U CN 201820526836U CN 208672790 U CN208672790 U CN 208672790U
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Prior art keywords
data
module
relay
protection tester
calibrating installation
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CN201820526836.9U
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Chinese (zh)
Inventor
张花
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Guangzhou Shining Electric Technology Co Ltd
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Guangzhou Shining Electric Technology Co Ltd
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Abstract

The utility model relates to a kind of relay-protection tester calibrating installations, including data assay module, data package module and one or more data collecting plate cards;Data assay module connects data package module, and data package module is separately connected data collecting plate card;Data collecting plate card includes multiple data acquisition channels, and each data acquisition channel is used to acquire the corresponding output signal for being detected relay-protection tester all the way.Above-mentioned relay-protection tester calibrating installation; pass through the design of data collecting plate card; it realizes and the data of the output signal of tested relay-protection tester is acquired, and be packaged collected data by data package module, be transmitted to data assay module and complete calibrating.Based on this, realizes to the automatic calibration of relay-protection tester, improve the efficiency and accuracy rate of calibrating.

Description

Relay-protection tester calibrating installation
Technical field
The utility model relates to the field of test technology, more particularly to a kind of relay-protection tester calibrating installation.
Background technique
Relay-protection tester is a kind of important testing tool for guaranteeing power system security reliability service, is widely used In every field such as route protection, transform er differential protection, excitation con-trols.Relay-protection tester needs pair after coming into operation Its voltage and current output accuracy is examined and determine, to ensure the normal operation of relay-protection tester.
Traditional specifically including that the calibrating mode of relay-protection tester measures relay-protection tester using multimeter Output voltage current precision;Use the phase angle between phase frequency meter measurement relay-protection tester output voltage electric current; Use the transient state parameter of storage oscilloscope measurement relay-protection tester.
However, multimeter is single-phase input, the parameter of a phase can only be measured every time.The voltage and current for testing three-phase must The multiple wiring of palpus, while needing manual record initial data.Phase frequency meter generally can only also measure a phase current and voltage it Between phase angle, also need multiple thread-changing and manual record initial data.When measuring transient state parameter using storage oscilloscope, hand Dynamic setting is cumbersome, generally requires repeatedly to attempt just capture signal, artificial error in reading is larger.
To sum up, traditional by way of manually carrying out inspection fixed sum data processing to relay-protection tester, calibrating efficiency Low and precision is not high.
Utility model content
Based on this, it is necessary to for traditional side by manually carrying out inspection fixed sum data processing to relay-protection tester Formula, the problem that calibrating efficiency is low and precision is not high, provides a kind of relay-protection tester calibrating installation.
A kind of relay-protection tester calibrating installation, including data assay module, data package module and one or more Data collecting plate card;
Data assay module connects data package module, and data package module is separately connected each data collecting plate card;
Data collecting plate card includes multiple data acquisition channels, and each data acquisition channel corresponding is detected all the way for acquiring The output signal of relay-protection tester.
Above-mentioned relay-protection tester calibrating installation is realized by the design of data collecting plate card to tested relay protection The data of the output signal of tester acquire, and are packaged collected data by data package module, are transmitted to number It completes to examine and determine according to assay module.Based on this, realizes to the automatic calibration of relay-protection tester, improve the efficiency and standard of calibrating True rate.
Data collecting plate card further includes data sampling module, magnetic couple isolation module and modulus in one of the embodiments, Conversion module;
Data sampling module, magnetic couple isolation module and analog-to-digital conversion module are sequentially connected, and data sampling module connects data Package module, analog-to-digital conversion module are separately connected each data acquisition channel.
Data collecting plate card is met to analogue type and numeric type by magnetic couple isolation module and analog-to-digital conversion module The output signal of relay-protection tester is handled.
Data collecting plate card further includes frequency measurement module in one of the embodiments,;
Frequency measurement module is separately connected data sampling module and data acquisition channel.
In the non-rated frequency of the output signal frequency of tested relay-protection tester, frequency measurement module measures collected letter Number frequency so that observation cycle is tended to the letter of tested output signal convenient for adjusting observation cycle subsequently through data assay module The integral multiple in number period allows the voltage of measurement, current value as actual value, more accurately to measure voltage, electric current Virtual value.
Data collecting plate card further includes range switch circuit in one of the embodiments,;
Data acquisition channel connects analog-to-digital conversion module by range switch circuit;
Range switch circuit connects data sampling module.
Range switch circuit is according to the amplitude of the output signal of collected tested relay-protection tester, by the amount of calibrating Journey section switches to corresponding range amplification coefficient, guarantees range measurement accuracy.
It in one of the embodiments, further include signal interface board;
Signal interface board connects data package module for being separately connected data collecting plate card.
It in one of the embodiments, further include display, touch tablet and key module;
Data assay module is separately connected display, touch tablet and key module.
The output signal of collected tested relay-protection tester is shown by display, and shows verification result.It is logical It crosses touch tablet and key module provides a variety of modes of operation, meet the needs of user's operation relay-protection tester calibrating installation.
It in one of the embodiments, further include data memory module;
Data memory module connects data package module.
Data assay module is arm processor in one of the embodiments,.
Data package module is fpga chip in one of the embodiments,.
Data sampling module is fpga chip in one of the embodiments,.
Detailed description of the invention
Fig. 1 is the relay-protection tester calibrating installation function structure chart of embodiment one;
Fig. 2 is the relay-protection tester calibrating installation function structure chart of embodiment two;
Fig. 3 is the relay-protection tester calibrating installation modular structure of embodiment three;
Fig. 4 is the relay-protection tester calibrating installation circuit structure diagram of a concrete application example;
Fig. 5 is the data collecting plate card circuit structure diagram of a concrete application example.
Specific embodiment
Purpose, technical solution and technical effect for a better understanding of the present invention, below in conjunction with drawings and examples Further explaining illustration is carried out to the present invention.State simultaneously, embodiments described below for explaining only the invention, not For limiting the present invention.
Embodiment one
Fig. 1 is the relay-protection tester calibrating installation function structure chart of embodiment one, as shown in Figure 1, relay protection is surveyed Test instrument inspection device includes data assay module 100, data package module 101 and one or more data collecting plate cards 102;
Data assay module 100 connects data package module 101, and data package module 101 is separately connected data acquisition board Card 102;
Wherein, the quantity of data collecting plate card 102 can need to be increased and decreased according to different configurations.Wherein, data acquire Board 102 can pass through connection data package module 101.It optionally, further include signal interface board.Signal interface board can be plate Card slot, data collecting plate card 102 are connect by way of plug-in card with signal interface board.Signal interface board is encapsulated with data are connect Module 101, data package module 101 receive the data that data collecting plate card 102 transmits by signal interface board.
Data collecting plate card 102 include multiple data acquisition channels, each data acquisition channel for acquire it is corresponding all the way The output signal of tested relay-protection tester.
Generally, relay-protection tester includes three-phase output voltage and three-phase output electric current, a data acquisition channel pair A phase output voltage or electric current should be acquired.Optionally, a data collecting plate card 102 includes four data acquisition channels, wherein three A data acquisition channel is used to acquire the three-phase output voltage or three-phase output electric current of tested relay-protection tester, another Data acquisition channel is for acquiring central point voltage or central point electric current.
Wherein, data package module 101 is the logic circuit or chip for having data encapsulation ability, for acquiring to data The collected data of board 102 carry out default encapsulation, are packaged into the data of predetermined format and are transmitted to data assay module 100. Optionally, data package module 101 is fpga chip.
Wherein, data assay module 100 is to have to carry out data calibrating to the output signal of tested relay-protection tester The logic circuit or chip of function, for the circuit or chip for integrating the functions such as multimeter, power quality analyzer and oscillograph.It can Selection of land, data assay module 100 are arm processor.
Data assay module 100 is i.MX6 processor in one of the embodiments, and i.MX6 processor integrates 2 cores ARMCortex—A9.Each processor provides the memory interface and a series of Peripheral Interfaces of a 64bit.Such as: PCI-E Interface, SATA interface, wireless interface, display interface, image sensor interface etc..The resources of chip is abundant, can satisfy calibrating The acquisition of device data, data storage, remote information access and processing, human-computer interaction interface extend out all functional requirements such as display.
The relay-protection tester calibrating installation of embodiment one is realized by the design of data collecting plate card 102 to tested The data of the output signal of relay-protection tester acquire, and are sealed collected data by data package module 101 Dress is transmitted to data assay module 100 and completes calibrating.Based on this, the automatic calibration to relay-protection tester is realized, improve The efficiency and accuracy rate of calibrating.
Embodiment two
Fig. 2 is the relay-protection tester calibrating installation function structure chart of embodiment two, as shown in Fig. 2, data acquisition board Card 102 further includes data sampling module 200, magnetic couple isolation module 201 and analog-to-digital conversion module 202;
Data sampling module 200, magnetic couple isolation module 201 and analog-to-digital conversion module 202 are sequentially connected, data sampling module 200 connection data package modules 101, analog-to-digital conversion module 202 are separately connected data acquisition channel.
Wherein, analog-to-digital conversion module 2021 is responsible for the collected data of data acquisition channel carrying out analog-to-digital conversion, and passes through It crosses magnetic couple isolation module 201 and is transmitted to data sampling module 200, to guarantee the stabilization of collected data.
The data that magnetic couple isolation module 201 is used to transmit analog-to-digital conversion module 202 to data sampling module 200 carry out magnetic Even isolation, improves the stability of data sampling.
Data sampling module 200 is used to control the data sampling to tested relay-protection tester, meets follow-up data inspection Fixed data demand.
Wherein, each data sampling module 200 connects data package module 101 by bus.
Wherein, when examining and determine analogue type relay-protection tester, data sampling module 200 passes the data after analog-to-digital conversion Transport to data package module 101;When examining and determine numeric type relay-protection tester, data sampling module 200 receives light datagram The output signal of the relay-protection tester of literary format parses light number message and the data parsed is transmitted to data encapsulation Module 101.
In one of the embodiments, as shown in Fig. 2, data collecting plate card 102 further includes frequency measurement module 203;
Frequency measurement module 203 is separately connected data sampling module 200 and data acquisition channel.
Wherein, frequency measurement module 203 can be frequency measurement circuit or frequency measurement chip.
When the output signal frequency of tested relay-protection tester is not rated frequency, the measurement acquisition of frequency measurement module 203 The frequency of the signal arrived makes observation cycle tend to tested output letter convenient for adjusting observation cycle subsequently through data assay module Number signal period integral multiple, allow the voltage of measurement, current value as actual value, with more accurately measure voltage, The virtual value of electric current.
In one of the embodiments, as shown in Fig. 2, data collecting plate card 102 further includes range switch circuit 204;
Data acquisition channel connects analog-to-digital conversion module 202 by range switch circuit 204;
Range switch circuit 204 connects data sampling module 200.
Range switch circuit 204 will be examined and determine according to the amplitude of the output signal of collected tested relay-protection tester Range section switch to corresponding range amplification coefficient, guarantee range measurement accuracy.
Wherein, the voltage and current output measurement accuracy for examining and determine relay protection tester needs to reach gamut 5/10000ths.In order to The measurement accuracy for guaranteeing gamut is needed using segmentation range measurement method.Segmentation range is divided into 4 grades of range sections.Detect one The voltage and current of tentering value then switches to corresponding range amplification coefficient, guarantees range measurement accuracy.
In one of the embodiments, data sampling module 200 be fpga chip, with guarantee data collecting plate card 202 with The consistency of the interface of data package module 200.
Embodiment three
Fig. 3 is the relay-protection tester calibrating installation function structure chart of embodiment three, as shown in figure 3, relay protection is surveyed Test instrument inspection device further includes display 301, touch tablet 302 and key module 303;
Data assay module 100 is separately connected display 301, touch tablet 302 and key module 303.
Display 301 is used to show the data of data assay module 100, such as collected output signal or calibrating knot Fruit.By touch tablet 302 and key module 303, while the calibrating for meeting touch-control and physical button form operates, and passes through touch tablet A variety of modes of operation are provided with key module, meet the needs of user's operation relay-protection tester calibrating installation.In a reality It applies in example, display 301 is configured to the colour liquid crystal display device of 5.6 inch of 640 × 480 dot matrix or more, corresponding to show Data.
It in one of the embodiments, further include data memory module;
Data memory module connects data package module.
Wherein, data memory module can be memory bar or hard disk, to store collected output signal and corresponding calibrating Data.
Fig. 4 is the relay-protection tester calibrating installation circuit structure diagram of a concrete application example, as shown in figure 4, this is specific The relay-protection tester calibrating installation circuit of application examples is based on ARM+FPGA structure.
Wherein, as shown in figure 4,8 DO output interfaces of standard configuration, 4 DI inputs, i.e., in FPGA core on fpga chip On piece accesses intake plate and outputs template part and the switching value response characteristic for detecting relay-protection tester.
DO/DI all selects rapid light coupling to carry out isolation design, and optocoupler signal is all directly accessed FPGA pin, in order to High speed timing.
Fig. 5 is the data collecting plate card circuit structure diagram of a concrete application example, as shown in figure 5, data sampling module 200 is selected With sampling plate FPGA, range switch circuit 204 selects multistage range switching filter circuit, and in acquisition relay-protection tester High current/low current sampling multiplexing selection is connected on the data sampling channel of current output signal, to meet high current/low current Sampling.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance Shield all should be considered as described in this specification.
Above embodiments only express the several embodiments of the utility model, and the description thereof is more specific and detailed, but simultaneously The limitation to utility model patent range therefore cannot be interpreted as.It should be pointed out that for the ordinary skill people of this field For member, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this reality With novel protection scope.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (10)

1. a kind of relay-protection tester calibrating installation, which is characterized in that including data assay module, data package module and one A or multiple data collecting plate cards;
The data assay module connects the data package module, and the data package module is separately connected each data and adopts Collect board;
The data collecting plate card includes multiple data acquisition channels, and each data acquisition channel corresponding is detected all the way for acquiring The output signal of relay-protection tester.
2. relay-protection tester calibrating installation according to claim 1, which is characterized in that the data collecting plate card is also Including data sampling module, magnetic couple isolation module and analog-to-digital conversion module;
The data sampling module, magnetic couple isolation module and analog-to-digital conversion module are sequentially connected, the data sampling module connection The data package module, the analog-to-digital conversion module are separately connected each data acquisition channel.
3. relay-protection tester calibrating installation according to claim 2, which is characterized in that the data collecting plate card is also Including frequency measurement module;
The frequency measurement module is separately connected the data sampling module and the data acquisition channel.
4. relay-protection tester calibrating installation according to claim 2, which is characterized in that the data collecting plate card is also Including range switch circuit;
The data acquisition channel connects the analog-to-digital conversion module by the range switch circuit;
The range switch circuit connects the data sampling module.
5. relay-protection tester calibrating installation according to claim 1, which is characterized in that further include signal interface board;
The signal interface board connects the data package module for being separately connected the data collecting plate card.
6. relay-protection tester calibrating installation according to claim 1, which is characterized in that further include display, touch Plate and key module;
The data assay module is separately connected the display, touch tablet and key module.
7. relay-protection tester calibrating installation according to claim 1, which is characterized in that further include data storage mould Block;
The data memory module connects the data package module.
8. according to claim 1 to relay-protection tester calibrating installation described in 7 any one, which is characterized in that the number It is arm processor according to assay module.
9. according to claim 1 to relay-protection tester calibrating installation described in 7 any one, which is characterized in that the number It is fpga chip according to package module.
10. relay-protection tester calibrating installation according to claim 2, which is characterized in that the data sampling module For fpga chip.
CN201820526836.9U 2018-04-13 2018-04-13 Relay-protection tester calibrating installation Active CN208672790U (en)

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Application Number Priority Date Filing Date Title
CN201820526836.9U CN208672790U (en) 2018-04-13 2018-04-13 Relay-protection tester calibrating installation

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Application Number Priority Date Filing Date Title
CN201820526836.9U CN208672790U (en) 2018-04-13 2018-04-13 Relay-protection tester calibrating installation

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110850141A (en) * 2019-09-30 2020-02-28 深圳市元征科技股份有限公司 Level display method, level display device, terminal equipment and storage medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110850141A (en) * 2019-09-30 2020-02-28 深圳市元征科技股份有限公司 Level display method, level display device, terminal equipment and storage medium
CN110850141B (en) * 2019-09-30 2022-02-22 深圳市元征科技股份有限公司 Level display method, level display device, terminal equipment and storage medium

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