CN202870214U - Apparatus for automatically verifying analog quantity precision of power distribution terminal - Google Patents
Apparatus for automatically verifying analog quantity precision of power distribution terminal Download PDFInfo
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- CN202870214U CN202870214U CN 201220560859 CN201220560859U CN202870214U CN 202870214 U CN202870214 U CN 202870214U CN 201220560859 CN201220560859 CN 201220560859 CN 201220560859 U CN201220560859 U CN 201220560859U CN 202870214 U CN202870214 U CN 202870214U
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Abstract
The utility model relates to an apparatus for automatically verifying the analog quantity precision of a power distribution terminal, which belongs to the technical field of power equipment, and can resolve the technical problem of increasing verification precision and production efficiency. The apparatus comprises a digital signal controller, a testing current output member, a testing voltage output member, and a multi-path digital analog converter and a multi-path analog digital converter both connected with the digital signal controller, wherein the digital signal controller is provided with a serial communication interface and an Ethernet interface, the multi-path digital analog converter is provided with eight outputs, four outputs of the eight outputs are connected with the four current signal output ends of the testing current output member, other four outputs are connected with the four voltage signal output ends of the testing voltage output member, the multi-path analog digital converter is provided with eight inputs, and the eight inputs are connected with the four current signal output ends of the testing current output member and the four voltage signal output ends of the testing voltage output member. The apparatus for automatically verifying the analog quantity precision of a power distribution terminal is high in verification precision and can reduce manpower investment.
Description
Technical field
The utility model relates to the power equipment technology, particularly relates to a kind of technology of distribution terminal analog quantity precision automatic check device.
Background technology
Before distribution terminal is used at the scene, for guaranteeing the especially precision index of analog quantity of its functional performance index, must carry out verification to it.
Traditional distribution terminal method of calibration is to utilize relay-protection tester to distribution terminal input three-phase and four-line measuring current to be tested and test voltage; and then by manually to the measurement data of distribution terminal compare, record; therefore need to expend great manpower; work efficiency is very low; and measuring current and the test voltage precision of relay-protection tester output are relatively low; exist certain error, can have influence on the accuracy of distribution terminal analog quantity precision checking.
The utility model content
For the defective that exists in the above-mentioned prior art, technical problem to be solved in the utility model provides and a kind ofly can reduce human input, enhances productivity, and can also improve the distribution terminal analog quantity precision automatic check device of distribution terminal analog quantity checking precision.
In order to solve the problems of the technologies described above, a kind of distribution terminal analog quantity precision automatic check device provided by the utility model comprises digital signal controller, hyperchannel digital to analog converter, measuring current output, test voltage output;
Described hyperchannel digital to analog converter is provided with a digital signal input port, and be provided with eight analog signal outputs, in each analog signal output of hyperchannel digital to analog converter, it is the measuring current output terminal that four analog signal outputs are arranged, and four analog signal outputs are the test voltage output terminal in addition;
The data-interface of digital signal controller is received in the digital signal input port of described hyperchannel digital to analog converter through data bus;
Described measuring current output is provided with four current signal output ends, and described test voltage output is provided with four voltage signal output ends;
Four measuring current output terminals of described hyperchannel digital to analog converter are received respectively four current signal output ends of measuring current output, and four test voltage output terminals of hyperchannel digital to analog converter are received respectively four voltage signal output ends of test voltage output;
It is characterized in that: also comprise a multipath A/D converter;
Described digital signal controller is provided with serial communication interface, Ethernet interface, and its serial communication interface is received a serial communication web member, and its Ethernet interface is received an Ethernet web member;
Described multipath A/D converter is provided with a digital signal delivery outlet, and be provided with eight input end of analog signal, in each input end of analog signal of multipath A/D converter, it is the measuring current sampling end that four input end of analog signal are arranged, and four input end of analog signal are the test voltage sampling end in addition;
The digital signal delivery outlet of described multipath A/D converter is received the data-interface of digital signal controller through data bus;
Four measuring current sampling ends of described multipath A/D converter are received respectively four current signal output ends of measuring current output, and four test voltage sampling ends of multipath A/D converter are received respectively four voltage signal output ends of test voltage output.
Further, four measuring current output terminals of described hyperchannel digital to analog converter are received respectively four current signal output ends of measuring current output successively through a filter circuit, a power drive loop, four test voltage output terminals of hyperchannel digital to analog converter are received respectively four voltage signal output ends of test voltage output successively through another filter circuit, a voltage amplification loop;
Described filter circuit, power drive loop, voltage amplification loop all have four tunnel inputs and four tunnel outputs.
Further, also comprise memory module, touch-screen; Described memory module is received the data-interface of digital signal controller through data bus, and described touch-screen drives the data-interface that digital signal controller is received in the loop through a touch-screen.
Further, described digital signal controller is provided with USB interface.
Further, described digital signal controller has a plurality of serial communication interfaces.
The distribution terminal analog quantity precision automatic check device that the utility model provides, digital signal controller gathers the analog quantity test signal by multipath A/D converter, adopt the output accuracy of close-loop control mode raising analog quantity test signal, can improve the analog quantity checking precision of distribution terminal; And digital signal controller can obtain the distribution terminal data by serial communication interface or Ethernet interface, by comparing of distribution terminal data and analog quantity test signal, can in the situation that does not need human intervention, automatically test the analog quantity precision of distribution terminal, greatly reduce human input, improved production efficiency.
Description of drawings
Fig. 1 is the structural representation of the distribution terminal analog quantity precision automatic check device of the utility model embodiment.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model is described in further detail, but present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof all should be listed protection domain of the present utility model in.
As shown in Figure 1, a kind of distribution terminal analog quantity precision automatic check device that the utility model embodiment provides comprises digital signal controller D1, hyperchannel digital to analog converter D2, measuring current output (not shown), test voltage output (not shown);
Described hyperchannel digital to analog converter D2 is provided with a digital signal input port, and be provided with eight analog signal outputs, in each analog signal output of hyperchannel digital to analog converter D2, it is the measuring current output terminal that four analog signal outputs are arranged, and four analog signal outputs are the test voltage output terminal in addition;
The data-interface of digital signal controller D1 is received in the digital signal input port of described hyperchannel digital to analog converter D2 through data bus;
Described measuring current output is provided with four current signal output ends, and described test voltage output is provided with four voltage signal output ends;
Four measuring current output terminals of described hyperchannel digital to analog converter D2 are received respectively four current signal output ends of measuring current output successively through a filter circuit D41, a power drive loop D5, four test voltage output terminals of hyperchannel digital to analog converter D2 are received respectively four voltage signal output ends of test voltage output successively through another filter circuit D42, a voltage amplification loop D6;
It is characterized in that: also comprise a multipath A/D converter D3;
Described digital signal controller D1 is provided with serial communication interface, Ethernet interface, and its serial communication interface is received a serial communication web member (not shown), and its Ethernet interface is received an Ethernet web member (not shown);
Described multipath A/D converter D3 is provided with a digital signal delivery outlet, and be provided with eight input end of analog signal, in each input end of analog signal of multipath A/D converter, it is the measuring current sampling end that four input end of analog signal are arranged, and four input end of analog signal are the test voltage sampling end in addition;
The digital signal delivery outlet of described multipath A/D converter D3 is received the data-interface of digital signal controller D1 through data bus;
Four measuring current sampling ends of described multipath A/D converter D3 are received respectively four current signal output ends of measuring current output, and four test voltage sampling ends of multipath A/D converter D3 are received respectively four voltage signal output ends of test voltage output.
Among the utility model embodiment, also comprise memory module D7, touch-screen D8; Described memory module D7 receives the data-interface of digital signal controller D1 through data bus, described touch-screen D8 drives the data-interface that digital signal controller D1 is received in the loop through a touch-screen, it is the NOR FLASH chip of S29GL1024 that described memory module has adopted model, is used for storage test process and test result.
Among the utility model embodiment, described digital signal controller D1 is provided with USB interface, is used for connecting the external USB memory device, so that import test process, derive test result by the external USB memory device.
Among the utility model embodiment, described digital signal controller D1 has a plurality of serial communication interfaces, one of them serial communication interface is maintenance interface, what this maintenance interface was used for digital signal controller and external portable machine communicates by letter the functions such as the upgrading of realization digital signal controller built-in system, parameter setting, case importing, as a result derivation.
Among the utility model embodiment, it is the micro-chip processor of STM32F407 that described digital signal controller has adopted model, it is 8 passages, the 14 figure place mould conversion chips of AD7841 that described hyperchannel digital to analog converter has adopted model, and it is 8 passages, the 16 figure place mould conversion chips of AD7606 that described multipath A/D converter has adopted model.
Among the utility model embodiment, described filter circuit is prior art, having adopted capacitance resistance ware and model is the operational amplifier realization active power filtering of OPA4134, have four tunnel inputs and four tunnel outputs, be used for the unsmooth filtered analog signal of hyperchannel digital to analog converter output is become the 50Hz ac signal of standard.
Among the utility model embodiment, described power drive loop is prior art, has adopted high-power power discharging device, has four tunnel inputs and four tunnel outputs, is used for pressing signal to zoom into the ac signal of 0～10A as the measuring current analog output light current.
Among the utility model embodiment, described voltage amplification loop is prior art, what adopt is transformer, has four tunnel inputs and four tunnel outputs, is used for pressing signal to zoom into 0～120V(or other magnitudes of voltage light current) ac signal as the test voltage analog output.
The method of calibration of the utility model embodiment is as follows:
The three-phase and four-line current signal input end (Ia, Ib, Ic, I0) of distribution terminal D9 to be verified is received respectively four current signal output ends of measuring current output, and the three-phase and four-line voltage signal input end (Ua, Ub, Uc, U0) of distribution terminal D9 to be verified is received respectively four voltage signal output ends of test voltage output;
The serial communication interface of distribution terminal D9 to be verified is received the serial communication web member of the utility model embodiment, or the Ethernet interface of distribution terminal D9 to be verified is received the Ethernet web member of the utility model embodiment;
Utilize digital signal controller output digital measurement trial signal, the digital measurement trial signal is divided into the output of eight tunnel analog quantity test signals after by the hyperchannel digital to analog converter, four tunnel analog quantity test signals are wherein inputted the three-phase and four-line current signal input end of distribution terminal to be verified as four drive tests examination current analog amount after filtering, power amplification, four tunnel analog quantity test signals are inputted the three-phase and four-line voltage signal input end of distribution terminal to be verified as four drive tests examination voltage analog after filtering, voltage amplification in addition;
Digital signal controller is communicated by letter with distribution terminal to be verified by serial communication interface or Ethernet interface, obtains three-phase and four-line current data and the voltage data of distribution terminal to be verified;
Digital signal controller is by four drive tests examination current analog amount and the four drive tests examination voltage analog of multipath A/D converter Gather and input distribution terminal to be verified, and according to the four drive tests examination current analog amount that gathers and four drive tests examination voltage analog, dynamically adjust the digital measurement trial signal value of output, realize the closed-loop control of measuring current analog quantity and test voltage analog quantity, to improve the output accuracy of measuring current analog quantity and test voltage analog quantity;
Digital signal controller compares three-phase and four-line current data and the voltage data of distribution terminal to be verified with four drive tests examination current analog amount and four drive tests examination voltage analog, thereby draws the three-phase and four-line analog quantity precision of distribution terminal to be verified.
Claims (5)
1. a distribution terminal analog quantity precision automatic check device comprises digital signal controller, hyperchannel digital to analog converter, measuring current output, test voltage output;
Described hyperchannel digital to analog converter is provided with a digital signal input port, and be provided with eight analog signal outputs, in each analog signal output of hyperchannel digital to analog converter, it is the measuring current output terminal that four analog signal outputs are arranged, and four analog signal outputs are the test voltage output terminal in addition;
The data-interface of digital signal controller is received in the digital signal input port of described hyperchannel digital to analog converter through data bus;
Described measuring current output is provided with four current signal output ends, and described test voltage output is provided with four voltage signal output ends;
Four measuring current output terminals of described hyperchannel digital to analog converter are received respectively four current signal output ends of measuring current output, and four test voltage output terminals of hyperchannel digital to analog converter are received respectively four voltage signal output ends of test voltage output;
It is characterized in that: also comprise a multipath A/D converter;
Described digital signal controller is provided with serial communication interface, Ethernet interface, and its serial communication interface is received a serial communication web member, and its Ethernet interface is received an Ethernet web member;
Described multipath A/D converter is provided with a digital signal delivery outlet, and be provided with eight input end of analog signal, in each input end of analog signal of multipath A/D converter, it is the measuring current sampling end that four input end of analog signal are arranged, and four input end of analog signal are the test voltage sampling end in addition;
The digital signal delivery outlet of described multipath A/D converter is received the data-interface of digital signal controller through data bus;
Four measuring current sampling ends of described multipath A/D converter are received respectively four current signal output ends of measuring current output, and four test voltage sampling ends of multipath A/D converter are received respectively four voltage signal output ends of test voltage output.
2. distribution terminal analog quantity precision automatic check device according to claim 1, it is characterized in that: four measuring current output terminals of described hyperchannel digital to analog converter are received respectively four current signal output ends of measuring current output successively through a filter circuit, a power drive loop, and four test voltage output terminals of hyperchannel digital to analog converter are received respectively four voltage signal output ends of test voltage output successively through another filter circuit, a voltage amplification loop;
Described filter circuit, power drive loop, voltage amplification loop all have four tunnel inputs and four tunnel outputs.
3. distribution terminal analog quantity precision automatic check device according to claim 1 and 2 is characterized in that: also comprise memory module, touch-screen; Described memory module is received the data-interface of digital signal controller through data bus, and described touch-screen drives the data-interface that digital signal controller is received in the loop through a touch-screen.
4. distribution terminal analog quantity precision automatic check device according to claim 1 and 2, it is characterized in that: described digital signal controller is provided with USB interface.
5. distribution terminal analog quantity precision automatic check device according to claim 1 and 2, it is characterized in that: described digital signal controller has a plurality of serial communication interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220560859 CN202870214U (en) | 2012-10-30 | 2012-10-30 | Apparatus for automatically verifying analog quantity precision of power distribution terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220560859 CN202870214U (en) | 2012-10-30 | 2012-10-30 | Apparatus for automatically verifying analog quantity precision of power distribution terminal |
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| Publication Number | Publication Date |
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| CN202870214U true CN202870214U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220560859 Expired - Fee Related CN202870214U (en) | 2012-10-30 | 2012-10-30 | Apparatus for automatically verifying analog quantity precision of power distribution terminal |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944774A (en) * | 2012-10-30 | 2013-02-27 | 上海晟东电力科技有限公司 | Automatic correction device and correction method for precision of analog quantity of power distribution terminal |
| CN103995207A (en) * | 2014-06-12 | 2014-08-20 | 国网上海市电力公司 | Three-remote automatic test device for power distribution terminal |
| CN104181412A (en) * | 2013-05-24 | 2014-12-03 | Det国际控股有限公司 | Arc detection |
| CN104977486A (en) * | 2015-06-15 | 2015-10-14 | 国网上海市电力公司 | Portable power distribution terminal tester |
| CN105824000A (en) * | 2015-01-04 | 2016-08-03 | 上海恩艾仪器有限公司 | Method for calibrating output board card |
| CN105823938A (en) * | 2015-01-04 | 2016-08-03 | 上海恩艾仪器有限公司 | Method for detecting state of output board card |
| CN105824266A (en) * | 2015-01-04 | 2016-08-03 | 上海恩艾仪器有限公司 | High-density dynamic analog output card |
-
2012
- 2012-10-30 CN CN 201220560859 patent/CN202870214U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944774A (en) * | 2012-10-30 | 2013-02-27 | 上海晟东电力科技有限公司 | Automatic correction device and correction method for precision of analog quantity of power distribution terminal |
| CN104181412A (en) * | 2013-05-24 | 2014-12-03 | Det国际控股有限公司 | Arc detection |
| CN103995207A (en) * | 2014-06-12 | 2014-08-20 | 国网上海市电力公司 | Three-remote automatic test device for power distribution terminal |
| CN105824000A (en) * | 2015-01-04 | 2016-08-03 | 上海恩艾仪器有限公司 | Method for calibrating output board card |
| CN105823938A (en) * | 2015-01-04 | 2016-08-03 | 上海恩艾仪器有限公司 | Method for detecting state of output board card |
| CN105824266A (en) * | 2015-01-04 | 2016-08-03 | 上海恩艾仪器有限公司 | High-density dynamic analog output card |
| CN104977486A (en) * | 2015-06-15 | 2015-10-14 | 国网上海市电力公司 | Portable power distribution terminal tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI WISCOM SUNEST ELECTRIC POWER TECHNOLOGY C Free format text: FORMER NAME: SHANGHAI SHENGDONG ELECTRIC POWER TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 200233, 680 Guiping Road, Shanghai, 32, building 6, room 614, Xuhui District Patentee after: SHANGHAI WISCOM SUNEST ELECTRIC POWER TECHNOLOGY CO., LTD. Address before: 200233, 680 Guiping Road, Shanghai, 32, building 6, room 614, Xuhui District Patentee before: Shanghai Shengdong Electric Power Technology Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20181030 |