CN201867455U - Electronic mutual indicator test system - Google Patents
Electronic mutual indicator test system Download PDFInfo
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- CN201867455U CN201867455U CN2010205513152U CN201020551315U CN201867455U CN 201867455 U CN201867455 U CN 201867455U CN 2010205513152 U CN2010205513152 U CN 2010205513152U CN 201020551315 U CN201020551315 U CN 201020551315U CN 201867455 U CN201867455 U CN 201867455U
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Abstract
The utility model relates to an electronic mutual indicator test system, which comprises an upflow device, an electronic mutual indicator and a test unit, wherein the electronic mutual indicator comprises a sensing head and a collector, the sensing head is connected in series with an output loop of the upflow device, the sensing head outputs current sensing signals to the collector, and the collector outputs data signals to the test unit and inputs synchronous signals synchronous with the clock of the test unit. In one implementation mode, the electronic mutual indicator test system also comprises a merging unit arranged between the collector and the test unit, the collector outputs data signals to the merging unit and inputs synchronous signals output by the merging unit, the merging unit outputs data signals to the test unit and inputs synchronous signals synchronous with the clock of the test unit, and the sensing head, the collector and the merging unit form a complete collection system. The electronic mutual indicator test system uses the test unit for testing the performance and the functions of the whole collection system of the electronic mutual indicator and the merging unit in the positive direction, i.e. interconnecting intercommunication test in the normal work state and the reverse direction, i.e. simulation of various typical faults or abnormal excitation.
Description
Technical field
The utility model belongs to electric power digital transformer station field tests, is specifically related to the test macro of a cover electronic mutual inductor.
Background technology
Electronic mutual inductor is as a collecting device, and for electric system electric energy metrical, relay protection and measure and control device provide electric current, voltage signal, its job stability and reliability directly influence safe, reliable, the economical operation of electric system.Electronic mutual inductor is as new transformer, its sensing principle and structure be all very big to be different from traditional electromagnetic transformer, has increased electronic circuit technology, optical technology, the communication technology, therefore, corresponding measuring technology need be probed into again, to realize the operating characteristic of cognitive electronic mutual inductor more all sidedly.Under the situation that, working time immature in current electronic mutual inductor technology be long, lack experience, more to expect the operational effect of electronic mutual inductor by measuring technology.
The utility model content
The purpose of this utility model just provides a cover electronic mutual inductor test macro, fills up the vacancy of current electronic mutual inductor measuring technology.
For achieving the above object, the utility model electronic mutual inductor test macro, comprise current lifting device, electronic mutual inductor and test cell, electronic mutual inductor comprises sensing head and collector, sensing head is connected on the output loop of current lifting device, sensing head output current induced signal is to collector, and the collector outputting data signals is to test cell, the synchronizing signal of input and test cell clock synchronization.
In one embodiment, also comprise merge cells, be arranged between collector and the test cell, the collector outputting data signals is to merge cells, the synchronizing signal of input merge cells output, the merge cells outputting data signals is to test cell, the synchronizing signal of input and test cell clock synchronization.Sensing head, collector and merge cells constitute complete acquisition system, by the performance and the function of test cell test acquisition system.
In a kind of test mode, above-mentioned test cell can be any unit in record ripple unit, IEC61850 monitoring messages analytic unit, network message unit and the protection measurement and control unit, wantonly two unit, wantonly three unit or whole unit.
In another kind of accuracy test mode, also comprise standard current transformer, be connected on the output loop of current lifting device, above-mentioned test cell is a verification unit, also imports the data-signal of standard current transformer output.So that by the verification unit measuring accuracy.
In another embodiment, also be provided with the SV sampling network, described collector or merge cells outputting data signals be to the SV sampling network, the external GPS synchronizing signal of input and test cell clock synchronization, described test cell connection SV sampling network.Described test cell can be any unit in record ripple unit, IEC61850 monitoring messages analytic unit, network message unit and the protection measurement and control unit, wantonly two unit, wantonly three unit or whole unit.
The utility model is interconnect under the normal operating conditions test, the reverse performance and the function of testing electronic mutual inductor and the whole acquisition system of merge cells under various typical faults or the unusual excitation of promptly simulating by forward.
Means of testing of the present utility model and project are more complete, are applied directly to the test of electronic mutual inductor occasion.Find many problems by the test of this cover system, solved problems and hidden danger for putting into operation.
Description of drawings
Fig. 1 the utility model embodiment functional block diagram;
Fig. 2 the utility model embodiment precision checking theory diagram;
Fig. 3 the utility model embodiment message format verification theory diagram;
Energy supply of Fig. 4 laser and bus are got the free-standing Luo-coil type mutual inductor structured flowchart that can match;
Fig. 5 the utility model embodiment alarms schematic block diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described in detail.
As shown in Figure 1, the function of the utility model electronic mutual inductor test macro is made up of interconnect test, reverse exciting test two parts of forward.Forward interconnects the test subsystems function for function and performance under the test electronic mutual inductor operate as normal attitude, whether satisfies service requirement; Reverse exciting test subsystem function is the limit processing power of test electronic mutual inductor, the ability of reply fault, burst and environmental impact, examination reliability and stability.
Wherein, subsystem is unified the forward characteristic test of interconnecting and is mainly comprised three big modules: precision checking module, message format verification module, synchronizing characteristics verification module etc., and positive test system functional block diagram such as Fig. 1 subsystem are unified, and specific implementation is as follows.
1, precision checking module: as shown in Figure 2, be the precision checking theory diagram, comprise current lifting device, electronic mutual inductor, merge cells, standard current transformer, verification unit, electronic mutual inductor and standard current transformer are connected on the output loop of current lifting device, merge cells is arranged between electronic mutual inductor and the verification unit, the electronic mutual inductor outputting data signals is to merge cells, the synchronizing signal of input merge cells output, the data-signal of verification unit input merge cells output, the signal of input standard current transformer output, the output clock sync signal is to merge cells.Electronic mutual inductor is as the data source of secondary device, and its precision influences the work of secondary device and the metering of electric weight etc., so precision checking is the most basic test event.The accuracy requirement of electronic mutual inductor is higher than conventional, and the electronic current mutual inductor accuracy requirement is not less than 0.2S/5P, and the voltage transformer (VT) accuracy requirement is not less than 0.2/3P.The accuracy test of electronic mutual inductor is based on conventional test methodologies, all use the comparison method, because electronic mutual inductor output digital signal, so require higher to verification unit, verification unit is finished the comparison of electronic mutual inductor and standard mutual inductor output and is calculated, possess functions such as the ratio of calculating, angular difference, display waveform, extracting and analytical sampling message, and the reliability height.Electronic mutual inductor is different from traditional electromagnetic transformer, its precision is adjustable, therefore precision checking is not only that conventional primary side up-flow calculates ratio, angular difference, also need analyze calibrating method, calibration foundation, calibration curve, whether comparison accuracy result satisfies calibration curve, guarantee the good linearity of electronic mutual inductor in working range, the electronic mutual inductor accuracy test requires to be higher than the test of conventional mutual inductor.
Electronic mutual inductor comprises sensing head and collector, and sensing head is connected on the output loop of current lifting device, is the primary side of electronic mutual inductor, and sensing head output current induced signal is to collector.Because the stipulations that collector outputs to merge cells standard are unitized, the precision checking unit of present embodiment is the output that inserts merge cells, thereby test is the overall precision of the complete acquisition system that constitutes of sensing head, collector and merge cells.As conditions permit, can also test the precision of collector output, promptly verification unit is to insert the output of collector.
2; message format verification module: as shown in Figure 3; be message format verification theory diagram; comprise current lifting device; electronic mutual inductor; merge cells and test cell; electronic mutual inductor comprises sensing head and collector; sensing head is connected on the output loop of current lifting device; sensing head output current induced signal is to collector; the data-signal of merge cells input collector output; the output synchronizing signal is to collector; be provided with the SV sampling network; the merge cells outputting data signals is to the SV sampling network; the external GPS synchronizing signal of input and test cell clock synchronization; test cell connects the SV sampling network, and test cell comprises record ripple unit; IEC61850 monitoring messages analytic unit; network message unit and protection measurement and control unit.
The correctness of this functions of modules whole acquisition system outgoing message that to be verification be made of sensing head, collector and merge cells is as numerical value, waveform, message, packet loss, sample frequency and cooperating of protective device etc.Finish test by access SV sampling networks such as IEC61850 monitoring messages analytic unit, network message unit, record ripple unit, protection measurement and control units.Each unit all can monitor sampling numerical value and waveform, and under system's operate as normal, the current lifting device up-flow checks whether the sampling numerical value and the waveform of above each access unit be correct.And monitoring messages analytic unit, network message unit only need dispose want the merge cells that monitors APPID SVID sample frequency etc. can intercept and capture real-time crude sampling message, whether the form of reference standard format analysis real-time packet is correct, can add up whether packet loss and packet loss are arranged.The sample frequency of merge cells must be higher than the sample frequency of protecting measurement and control unit, could guarantee the high precision of sampled value.On each access unit function intersection is arranged, just can instead survey the reliability of each access unit self work, so that the test result better authenticity by mutual contrastive test result.
Present embodiment is that the data of merge cells output are shared through the SV sampling network, test cell access SV sampling network is finished test, also can be the direct outputting data signals of merge cells to test cell, present embodiment test be the correctness of the whole acquisition system outgoing message that constitutes of sensing head, collector and merge cells.As conditions permit, can also test the correctness of collector outgoing message, i.e. the data of collector output are shared through the SV sampling network, and test cell inserts the SV sampling network and finishes test, and perhaps collector directly connects test cell.Test cell also can not be that IEC61850 monitoring messages analytic unit, network message unit, record ripple unit and protection measurement and control unit are whole, but wherein any unit, wantonly two unit or wantonly three unit are decided according to testing needs.
3, synchronizing characteristics test module: the synchronized relation of acquisition system is to the transmission data synchronization, comprising synchronous between merge cells external GPS, merge cells and collector.Show synchronously according to message synchronous mark position mechanism, merge cells panel whether the synchronization association of testing whole acquisition system holds water.Externally GPS connect normal, normal synchronously between merge cells and collector, at SV sampling network intercepting real-time packet, check the whether set of synchronous mark position by monitoring messages unit, network message unit, check whether the merge cells panel has corresponding indicator signal.
Electronic mutual inductor is as a kind of novel product, and the test emphasis should be reliability and stability, so at the fault that may occur in each parts and the whole acquisition system actual motion and unusual, the analogous reverse exciting test is indispensable.As shown in Figure 1, subsystem two reverse exciting tests mainly comprise four module: collector limit processing power test module, analogue communication fault test module, the synchronous abnormality test module of simulation, simulation alarm functional test module etc.Specific implementation is as follows.
1, collector limit processing power test module: electronic mutual inductor is different from traditional electromagnetic transformer, collector relates to electronic circuit, optical technology, and be operated in (outdoor high-voltage place) in the severe environment, need tolerance and the processing power of examination acquisition system hardware and software to moment impact, and the degree of influence that is subjected to environment such as temperature, vibrations.As shown in Figure 3, method is as follows:
A) simulation primary side moment powers on and instant power-down, test the stability of whole acquisition system output, respectively insert real time datas analysis moment impacts such as the record wave-wave shape of SV sampling network unit, the message of sampling by Fig. 3 before and after whether abnormal data or wave form distortion are arranged, examined or check the limit processing power of sensing head sensitivity and collector.
B) importance of collector power supply is self-evident, simulation primary side rated current, be that sensing head is when passing to rated current, power supply moment of collector powers on, dead electricity, before and after the test collector is restarted, the stability of whole acquisition system output, whether have abnormal data or wave form distortion, examined or check the collector automatic recovery ability if respectively inserting real time datas analysis moment impacts front and back such as the record wave-wave shape of SV sampling network unit, the message of sampling by Fig. 3.In addition, for the mutual inductor of need independence energy supply, get the free-standing Luo-coil type mutual inductor that can match as adopting laser energy supply and bus, as shown in Figure 4, when carrying out this test, when primary side added rated current, bus was got and can be worked, want analog acquisition device dead electricity, should open the encapsulation of collector earlier, the people for remove bus get can, like this during the primary side rated current, the laser energy supply is closed, thereby realizes analog acquisition device dead electricity effect.
C) vibrations when switch, switch operation, the operate as normal to mutual inductor causes certain influence, need investigate by testing earlier, GIS station especially, mutual inductor and switch, disconnecting link fit together, and be into a single integrated structure, and operating influence is more obvious.During simulation primary side rated current, deciliter switch, disconnecting link cause vibrations, respectively insert real time data analysis vibrations such as the record wave-wave shape of SV sampling network unit, the message of sampling by Fig. 3 before and after whether abnormal data or wave form distortion are arranged, examined or check collector work and born environment capacity.
2, analogue communication fault test module: primary side has under the electric current, the data communication of analog acquisition device and merge cells is interrupted, excitation can be connected optical fiber with the data transmission of merge cells by the interruption collector and simulate, restart, the power supply moment that is merge cells powers on, dead electricity is simulated, by Fig. 3 respectively insert the record wave-wave shape of SV sampling network unit, whether waveform, message that real time datas such as sampling message etc. are analyzed this process of motivation acquisition system output unusual, have examined or check the automatic recovery ability of merge cells.
3, simulate synchronous abnormality test module: simulate the various unusual of whole acquisition system synchronizing signal, lose as the merge cells external GPS, between merge cells and collector under the synchronization loss, respectively insert SV sampling network unit such as IEC61850 monitoring messages unit according to Fig. 3, the message that the network message unit is intercepted and captured in real time, whether correct response goes out unusually in synchronous mark position in the test packet, from synchronization loss to the message synchronous mark position displacement time, the merge cells external GPS is lost, between merge cells and collector under the synchronization loss dual mode synchronous mark mechanism how to handle, how the synchronous mark position changes and the displacement time.When whether the device panel shows synchronously correct (as synchronous pilot lamp), synchronization loss, from merge cells, protection measurement and control unit and monitoring backstage whether warning information is arranged and how to alarm.Whether rationally reliable by the synchronous processing mechanism that acquisition system is tested in above these unusual synchronously simulations, whether satisfy on-the-spot service requirement.
4, simulation alarm functional test module: as shown in Figure 5; the alarm signal of present whole acquisition system is reacted by merge cells; so faults and following unusually such as analogue communication interruption, step-out; data optical fiber and synchronous optical fiber as disconnected collector and merge cells; disconnected external GPS; the output optical fibre of disconnected merge cells etc.; the alarm function of test merge cells; concrete correct alarm clause is correctly indicated, whether had to the alarm indicator on the panel of checking merge cells whether; the protection measurement and control unit warning information, and on send the monitoring background function.The collector of some mutual inductor (as pure smooth type electric mutual inductor) requires very high to working environment, then also need test the supervision and the alarm function of collector humiture.
This test macro has been included the performance test of each monomer of the whole acquisition system of electronic mutual inductor, and whole the acquisition system performance and the functional test of interconnecting.Launch test job respectively from forward, reverse two angles, positive test is made a comment or criticism under the normal duty, and the operating characteristic of electronic mutual inductor guarantees to realize data acquisition, transmission correctness, the collection capacity of the normal operation of accurate response system.Contingent fault and unusual condition when negative test refers to move according to electronic mutual inductor, analog stimulus, the processing response ability of test electronic mutual inductor is guaranteed the functional reliability and the stability of electronic mutual inductor.Native system is on probation in a plurality of digital transformer substation engineerings, has found many problems, has solved many defectives and hidden danger, has carried out the work of checking on for successfully putting into operation.This test macro forms according to the test practice summary of the multiple electronic mutual inductor of a plurality of digital transformer substations, belongs to innovation, has practical value.
Claims (10)
1. electronic mutual inductor test macro, it is characterized in that: comprise current lifting device, electronic mutual inductor and test cell, electronic mutual inductor comprises sensing head and collector, sensing head is connected on the output loop of current lifting device, sensing head output current induced signal is to collector, the collector outputting data signals is to test cell, the synchronizing signal of input and test cell clock synchronization.
2. test macro according to claim 1, it is characterized in that: also comprise merge cells, be arranged between collector and the test cell, the collector outputting data signals is to merge cells, the synchronizing signal of input merge cells output, the merge cells outputting data signals is to test cell, the synchronizing signal of input and test cell clock synchronization.
3. test macro according to claim 1 and 2 is characterized in that: described test cell is any unit in record ripple unit, IEC61850 monitoring messages analytic unit, network message unit and the protection measurement and control unit, wantonly two unit, wantonly three unit or whole unit.
4. test macro according to claim 1 and 2 is characterized in that: also comprise standard current transformer, be connected on the output loop of current lifting device, described test cell is a verification unit, also imports the data-signal of standard current transformer output.
5. test macro according to claim 1, it is characterized in that: also be provided with the SV sampling network, described collector outputting data signals is to the SV sampling network, the external GPS synchronizing signal of input and test cell clock synchronization, described test cell connection SV sampling network.
6. test macro according to claim 5 is characterized in that: described test cell is any unit in record ripple unit, IEC61850 monitoring messages analytic unit, network message unit and the protection measurement and control unit, wantonly two unit, wantonly three unit or whole unit.
7. test macro according to claim 6 is characterized in that: also be provided with station level network and monitoring backstage, described station level network connects the protection measurement and control unit, connects the monitoring backstage.
8. test macro according to claim 2, it is characterized in that: also be provided with the SV sampling network, described merge cells outputting data signals is to the SV sampling network, the external GPS synchronizing signal of input and test cell clock synchronization, described test cell connection SV sampling network.
9. test macro according to claim 8 is characterized in that: described test cell is any unit in record ripple unit, IEC61850 monitoring messages analytic unit, network message unit and the protection measurement and control unit, wantonly two unit, wantonly three unit or whole unit.
10. test macro according to claim 9 is characterized in that: also be provided with station level network and monitoring backstage, described station level network connects the protection measurement and control unit, connects the monitoring backstage.
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| CN102662152A (en) * | 2012-05-15 | 2012-09-12 | 河南省电力公司济源供电公司 | Electronic type mutual inductor as well as system and method for verifying merging unit |
| CN102944802A (en) * | 2012-12-12 | 2013-02-27 | 湖南大学 | Estimation method for dynamic frequency response function of voltage transformer and realizing device thereof |
| CN103135013A (en) * | 2012-12-28 | 2013-06-05 | 辽宁省电力有限公司 | Detecting and evaluating system of data acquisition unit |
| CN103149485A (en) * | 2013-03-13 | 2013-06-12 | 绍兴电力局 | Transient-state waveform analysis system based on electronic mutual inductor |
| CN103293414A (en) * | 2013-05-21 | 2013-09-11 | 国家电网公司 | Intelligent substation protection device synchronization performance test system and method based on GPS (globe positioning system) accurate time synchronization technology |
| CN103439681A (en) * | 2013-07-31 | 2013-12-11 | 国家电网公司 | Electronic current transformer short-time current vibration test device and method thereof |
| CN103558465A (en) * | 2013-10-29 | 2014-02-05 | 国家电网公司 | Method for on-line precision calibration of 10kV protecting device |
| CN103616580A (en) * | 2013-11-08 | 2014-03-05 | 北京博电新力电气股份有限公司 | Data conversion angular difference test method of merging units |
| CN104090256A (en) * | 2014-07-15 | 2014-10-08 | 国家电网公司 | Electronic transformer full-automatic debugging system |
| CN104237833A (en) * | 2013-06-07 | 2014-12-24 | 中国能建集团装备有限公司南京技术中心 | Detector used for cross-testing combiner unit compatibility |
| CN105353332A (en) * | 2015-10-29 | 2016-02-24 | 中国电力科学研究院 | Electronic transformer long-term charged performance test method and system |
| CN106772190A (en) * | 2016-11-23 | 2017-05-31 | 国家电网公司 | The test comparison method and device of electronic type voltage transformer under the conditions of a kind of VFTO |
| CN107884739A (en) * | 2017-09-29 | 2018-04-06 | 国网吉林省电力有限公司电力科学研究院 | A kind of powered analysis system of electronic mutual inductor |
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2010
- 2010-09-29 CN CN2010205513152U patent/CN201867455U/en not_active Expired - Lifetime
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| CN102662152A (en) * | 2012-05-15 | 2012-09-12 | 河南省电力公司济源供电公司 | Electronic type mutual inductor as well as system and method for verifying merging unit |
| CN102944802A (en) * | 2012-12-12 | 2013-02-27 | 湖南大学 | Estimation method for dynamic frequency response function of voltage transformer and realizing device thereof |
| CN103135013A (en) * | 2012-12-28 | 2013-06-05 | 辽宁省电力有限公司 | Detecting and evaluating system of data acquisition unit |
| CN103135013B (en) * | 2012-12-28 | 2015-12-02 | 辽宁省电力有限公司 | Data acquisition unit test and assessment system |
| CN103149485B (en) * | 2013-03-13 | 2015-09-30 | 绍兴电力局 | A kind of transient-wave analytic system based on electronic mutual inductor |
| CN103149485A (en) * | 2013-03-13 | 2013-06-12 | 绍兴电力局 | Transient-state waveform analysis system based on electronic mutual inductor |
| CN103293414A (en) * | 2013-05-21 | 2013-09-11 | 国家电网公司 | Intelligent substation protection device synchronization performance test system and method based on GPS (globe positioning system) accurate time synchronization technology |
| CN104237833A (en) * | 2013-06-07 | 2014-12-24 | 中国能建集团装备有限公司南京技术中心 | Detector used for cross-testing combiner unit compatibility |
| CN103439681B (en) * | 2013-07-31 | 2015-11-04 | 国家电网公司 | Electronic current mutual inductor short-time current vibration testing device and method thereof |
| CN103439681A (en) * | 2013-07-31 | 2013-12-11 | 国家电网公司 | Electronic current transformer short-time current vibration test device and method thereof |
| CN103558465A (en) * | 2013-10-29 | 2014-02-05 | 国家电网公司 | Method for on-line precision calibration of 10kV protecting device |
| CN103616580A (en) * | 2013-11-08 | 2014-03-05 | 北京博电新力电气股份有限公司 | Data conversion angular difference test method of merging units |
| CN103616580B (en) * | 2013-11-08 | 2016-04-13 | 北京博电新力电气股份有限公司 | Merge cells data conversion angular difference method of testing |
| CN104090256A (en) * | 2014-07-15 | 2014-10-08 | 国家电网公司 | Electronic transformer full-automatic debugging system |
| CN105353332A (en) * | 2015-10-29 | 2016-02-24 | 中国电力科学研究院 | Electronic transformer long-term charged performance test method and system |
| CN105353332B (en) * | 2015-10-29 | 2023-11-14 | 中国电力科学研究院 | Method and system for checking long-term electrification performance of electronic transformer |
| CN106772190A (en) * | 2016-11-23 | 2017-05-31 | 国家电网公司 | The test comparison method and device of electronic type voltage transformer under the conditions of a kind of VFTO |
| CN107884739A (en) * | 2017-09-29 | 2018-04-06 | 国网吉林省电力有限公司电力科学研究院 | A kind of powered analysis system of electronic mutual inductor |
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Granted publication date: 20110615 |