CN204214991U - A kind of equipment and system of testing electronic mutual inductor polarity - Google Patents
A kind of equipment and system of testing electronic mutual inductor polarity Download PDFInfo
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- CN204214991U CN204214991U CN201420753839.8U CN201420753839U CN204214991U CN 204214991 U CN204214991 U CN 204214991U CN 201420753839 U CN201420753839 U CN 201420753839U CN 204214991 U CN204214991 U CN 204214991U
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Abstract
The utility model provides a kind of equipment and system of testing electronic mutual inductor polarity, and described equipment comprises: flush bonding module, the control module be connected with described flush bonding module by bus and the power amplifier be connected with described control module; Described flush bonding module, gathers the current properties preset, and sends described current properties to described control module by bus; Described control module, sends simulating signal according to described current properties to described power amplifier; Described power amplifier, exports after carrying out power amplification to described simulating signal.The utility model determines the polarity of electronic mutual inductor, for relevant protective relaying device and measurement, measuring apparatus true(-)running provide guarantee.
Description
Technical field
The utility model, about the intelligent substation technical field in electric system, particularly about the detection technique field of electronic mutual inductor in intelligent substation, is a kind of equipment and system of testing electronic mutual inductor polarity concretely.
Background technology
Intelligent substation is that entirely stand information digitalization, communications platform networking, information sharing is standardized as the transformer station of new generation on basis.Intelligent substation replaces routine transformer with electronic mutual inductor, regular circuit breakers is replaced with intelligent breaker, according to IEC61850 standard, the drawback of conventional substation has been carried out significantly improving, decrease the defect of conventional substation in debugging, operation etc., substantially increase substation safety reliability of operation.
Intelligent substation is the important support node of intelligent grid, and electronic mutual inductor is as the visual plant of intelligent substation, and its performance test has material impact to guarantee intelligent substation safe and stable operation.At the polarity chron of test light mutual inductor or electronic mutual inductor, the general strong current generator that adopts is through-flow at primary equipment, and the sampling message issued by capturing merge cells determines mutual inductor polarity.
In prior art, the polarity of method to electronic mutual inductor of the traditional mutual inductor polarity of test is used to test, it is specially: on a circuit, apply an instantaneous DC voltage with dry cell, judges mutual inductor polarity with pointer gauge in the secondary circuit monitoring current flow direction.
In above-mentioned testing scheme, electronic mutual inductor inside is integrated with data acquisition unit, Date Conversion Unit and data publication unit, and the digital quantity signal of issue exports after merge cells carries out synchronous process.Therefore represented by the digital quantity signal issued afterwards with the merged unit collection of the current-mode analog quantity in primary circuit after dry cell point-polarity, also just cannot flow at secondary circuit monitoring current with pointer gauge; And dry cell voltage and discharge capability limited, the electric current in loop is very little, sometimes can only produce microampere order electric current, if capture the SV message that sends of electronic mutual inductor and resolve, cannot distinguish with noise.
In addition, current lifting device, standard mutual inductor and electronic transducer calibration instrument is used in addition in prior art, allow primary current simultaneously by electronic mutual inductor and standard mutual inductor, use electronic transducer calibration instrument to compare the current phase of the two, thus obtain the scheme of polar relationship.But the main equipment that this testing scheme uses is too much; Current lifting device power is large and dangerous; Experimentation is loaded down with trivial details; And need a large amount of safety practice.
Therefore, how carrying out effective Accurate Measurement to the polarity of electronic mutual inductor is this area technical barrier urgently to be resolved hurrily.
Utility model content
In order to solve in prior art for the above-mentioned technological deficiency that the polarity detection scheme of electronic mutual inductor exists, the utility model embodiment provides a kind of equipment and system of testing electronic mutual inductor polarity, by setting up by flush bonding module, the equipment of control module and power amplifier composition, the controlled DC current of size is applied from circuit primary side, capture the packet that electronic mutual inductor sends, then message analysis instrument is used to analyze the current waveform comprised in packet, obtain the polarity of electronic mutual inductor, for relevant protective relaying device and measurement, measuring apparatus true(-)running provides guarantee.
One of the purpose of this utility model is, the control module a kind of equipment testing electronic mutual inductor polarity is provided, described equipment comprises flush bonding module, being connected with described flush bonding module by bus and the power amplifier be connected with described control module; Described flush bonding module, gathers the current properties preset, and sends described current properties to described control module by bus; Described control module, sends simulating signal according to described current properties to described power amplifier; Described power amplifier, exports after carrying out power amplification to described simulating signal.
In preferred implementation of the present utility model, described control module comprises: digital signal processor, determines digital waveform according to described current properties; Digital to analog converter, is connected with described digital signal processor, carries out digital-to-analog conversion to described digital waveform; Isolator, is connected with described digital to analog converter, and the digital waveform after logarithmic mode conversion carries out isolation processing, obtains simulating signal.
In preferred implementation of the present utility model, described power amplifier comprises: amplifying circuit, carries out power amplification to described simulating signal; Protection circuit, is connected with described amplifying circuit, when the simulating signal after described power amplification exceeds the power threshold preset, and output alarm signal.
In preferred implementation of the present utility model, described amplifying circuit comprises operational amplifier, multiple resistance and switch.
In preferred implementation of the present utility model; described power amplifier comprises: warning circuit, is connected with described protection circuit, receives the alerting signal that described protection circuit exports; report to the police according to described alerting signal, and described power amplifier is stopped.
One of the purpose of this utility model is, provides a kind of system of testing electronic mutual inductor polarity, and described system comprises the equipment of message analysis instrument, tested electronic mutual inductor and test electronic mutual inductor polarity; Wherein, the equipment of described test electronic mutual inductor polarity is connected with tested electronic mutual inductor; Tested electronic mutual inductor is connected with described message analysis instrument; The equipment of described test electronic mutual inductor polarity, according to the current properties outputting analog signal preset; Tested electronic mutual inductor, the simulating signal described in collection, according to described analog signal output collection capacity SV message; Described message analysis instrument, the SV message described in crawl, exports the polarity of described electronic mutual inductor according to described SV message.
In preferred implementation of the present utility model, in the equipment of described test electronic mutual inductor polarity: the current properties preset of flush bonding module collection comprises the first moment, DC current and the second moment; Described control module is according to described current properties outputting analog signal; The simulating signal that described power amplifier exports is: without analog signal output in the first moment, when the first moment of arrival, the simulating signal of output is DC current, when the second moment arrived, stops outputting analog signal.
In preferred implementation of the present utility model, the switch in the amplifying circuit of the equipment intermediate power amplifier of described test electronic mutual inductor polarity disconnects within the first moment, closes, disconnect when arriving for the second moment when reaching for the first moment.
In preferred implementation of the present utility model, described message analysis instrument comprises: message handling module, for capturing described SV message; Packet parsing module, for resolving described SV message, obtains current sample waveform; Polarity output module, for the polarity of electronic mutual inductor according to described current sample wave form output.
The beneficial effects of the utility model are, provide a kind of equipment and system of testing electronic mutual inductor polarity, , by setting up by flush bonding module, the equipment of control module and power amplifier composition, the controlled DC current of size is applied from circuit primary side, capture the packet that electronic mutual inductor sends, then message analysis instrument is used to analyze the current waveform comprised in packet, obtain the polarity of electronic mutual inductor, compared to traditional polarity test, electronic mutual inductor polarity test equipment can direct flux in primary circuit, the SV message captured by merge cells is directly resolved and is determined polarity, disposablely can complete the verification of mutual inductor polarity and merge cells polarity, for relevant protective relaying device and measurement, measuring apparatus true(-)running provides guarantee, electronic mutual inductor polarity test equipment output current is adjustable, succinct directly perceived, negative-feedback regu-lation introduced by power amplifier, improves the precision of output current, the out-of-limit protection of power of electronic mutual inductor polarity test equipment and alarm function can be good at the protection person and device security.
For above and other object of the present utility model, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawings, be described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
A kind of structured flowchart testing the system of electronic mutual inductor polarity that Fig. 1 provides for the utility model embodiment;
A kind of structured flowchart testing the equipment of electronic mutual inductor polarity that Fig. 2 provides for the utility model embodiment;
A kind of structured flowchart testing control module in the equipment of electronic mutual inductor polarity that Fig. 3 provides for the utility model embodiment;
A kind of structured flowchart testing the embodiment one of the equipment intermediate power amplifier of electronic mutual inductor polarity that Fig. 4 provides for the utility model embodiment;
A kind of structured flowchart testing the embodiment two of the equipment intermediate power amplifier of electronic mutual inductor polarity that Fig. 5 provides for the utility model embodiment;
A kind of schematic diagram testing amplifying circuit in the equipment intermediate power amplifier of electronic mutual inductor polarity that Fig. 6 provides for the utility model embodiment;
A kind of structured flowchart testing message analysis instrument in the system of electronic mutual inductor polarity that Fig. 7 provides for the utility model embodiment;
The main functionality block diagram of the equipment of electronic mutual inductor polarity is tested in the specific embodiment that Fig. 8 provides for the utility model;
The on-the-spot test schematic diagram of the system of electronic mutual inductor polarity is tested in the specific embodiment that Fig. 9 provides for the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
First abbreviation of the present utility model and Key Term is introduced below:
SV:Sampled Value, sampled value.Based on publish/subscribe mechanism, exchange correlation model object and the service of the sampled value that sampled data is concentrated, and the mapping between these model objects and service to ISO/IEC8802-3 frame.
Intelligent substation: smart substation.Adopt the smart machine of advanced, reliable, integrated, low-carbon (LC), environmental protection; basic demand is standardized as with information digitalization of entirely standing, communications platform networking, information sharing; automatically complete the basic functions such as information acquisition, measurement, control, protection, metering and monitoring, and the transformer station of the Premium Features such as electrical network control automatically in real time, Intelligent adjustment, on-line analysis decision-making, collaborative interaction can be supported as required.
Electronic mutual inductor polarity: the characteristic that the digital quantity signal that electronic mutual inductor exports is identical or contrary with the analog signals phase place of primary side.
The utility model mainly solves the coarse problem of mensuration of existing electronic mutual inductor polarity.A kind of structured flowchart testing the system of electronic mutual inductor polarity that Fig. 1 provides for the utility model embodiment, as shown in Figure 1, this system comprises: the equipment 300 of message analysis instrument 100, tested electronic mutual inductor 200 and test electronic mutual inductor polarity.
Wherein, the equipment 300 of described test electronic mutual inductor polarity is connected with tested electronic mutual inductor 200;
Tested electronic mutual inductor 200 is connected with described message analysis instrument 100;
The equipment 300 of described test electronic mutual inductor polarity, according to the current properties outputting analog signal preset;
Tested electronic mutual inductor 200, the simulating signal described in collection, according to described analog signal output collection capacity SV message;
Described message analysis instrument 100, the SV message described in crawl, exports the polarity of described electronic mutual inductor according to described SV message.
A kind of structured flowchart testing the equipment of electronic mutual inductor polarity that Fig. 2 provides for the utility model embodiment, as shown in Figure 2, this equipment specifically comprise flush bonding module 301, the control module 302 that is connected with described flush bonding module 301 by bus and the power amplifier 303 be connected with described control module 302.
Described flush bonding module 301, gathers the current properties preset, and sends described current properties to described control module by bus;
Described control module 302, sends simulating signal according to described current properties to described power amplifier;
Described power amplifier 303, exports after carrying out power amplification to described simulating signal.
A kind of structured flowchart testing control module in the equipment of electronic mutual inductor polarity that Fig. 3 provides for the utility model embodiment, as shown in Figure 3, described control module comprises:
Digital signal processor 3021, determines digital waveform according to described current properties;
Digital to analog converter 3022, is connected with described digital signal processor, carries out digital-to-analog conversion to described digital waveform;
Isolator 3023, is connected with described digital to analog converter, and the digital waveform after logarithmic mode conversion carries out isolation processing, obtains simulating signal.
A kind of structured flowchart testing the embodiment one of the equipment intermediate power amplifier of electronic mutual inductor polarity that Fig. 4 provides for the utility model embodiment, as shown in Figure 4, in embodiment one, described power amplifier 303 comprises:
Amplifying circuit 3031, carries out power amplification to described simulating signal;
Protection circuit 3032, is connected with described amplifying circuit, when the simulating signal after described power amplification exceeds the power threshold preset, and output alarm signal.
But when electronic mutual inductor polarity test equipment keeps electric current to export, loop is disconnected, the external load R being equivalent to electronic mutual inductor polarity test equipment is tending towards infinitely great, now current output terminal mouth two ends need to produce very large voltage to drive external circuit, and then threaten the person and device security.Therefore, power amplifier also needs to introduce protection circuit, and when the output power of electronic mutual inductor polarity test equipment exceedes the threshold value of setting, stopping exports and trigger equipment alarm by power amplifier.
A kind of structured flowchart testing the embodiment two of the equipment intermediate power amplifier of electronic mutual inductor polarity that Fig. 5 provides for the utility model embodiment, as shown in Figure 5, in embodiment two, described power amplifier 303 also comprises:
Warning circuit 3033, is connected with described protection circuit, receives the alerting signal that described protection circuit exports, reports to the police, and stopped by described power amplifier according to described alerting signal.
A kind of schematic diagram testing amplifying circuit in the equipment intermediate power amplifier of electronic mutual inductor polarity that Fig. 6 provides for the utility model embodiment, as shown in Figure 6, described amplifying circuit 3031 comprises operational amplifier, multiple resistance and switch.According to operational amplifier principle, following equation can be obtained:
If make R
1=R
3, R
2=R
4, then have
Can be seen by above formula, the size of electric current I is by sample resistance R
sdetermine with the closed-loop system that input voltage is formed.By introducing negative feedback network, the stability of circuit can be improved, reducing linear distortion, regulate the functions such as input and output resistance.In addition, by output end voltage U
0monitoring; the Real-Time Monitoring to electronic mutual inductor polarity test plant capacity can be realized; when the output power of electronic mutual inductor polarity test equipment exceedes the threshold value of setting, stopping exports and trigger equipment alarm by power amplifier, thus plays the object of the protection person and equipment.
As above be the electronic mutual inductor polarity test equipment that the utility model provides, its primarily of flush bonding module, control module and power amplifier three part composition.Wherein, flush bonding module major function is man-machine interaction, and tester is arranged measuring current attribute by this, also can monitor the duty of electronic mutual inductor polarity test equipment in real time simultaneously.Flush bonding module can send by bus the current properties that tester sets to control module.
Digital signal processor draws digital waveform by computing, after digital-to-analog conversion, isolation, sends small-signal to power amplifier.Power amplifier carries out power amplification to small-signal, makes it enough drive external load circuit, to ensure carrying out smoothly of test event.Digital signal processor in the utility model realizes by the digital signal processor of most of model of the prior art.
Power amplifier also should have the out-of-limit protection of power simultaneously: once output power exceedes the threshold value of setting, then power amplifier quits work, and the alarm function of triggerable electronic formula mutual inductor polarity testing apparatus, to ensure the safety of the person, equipment.
During the electronic mutual inductor polarity test testing of equipment electronic mutual inductor provided by the utility model, first to arrange the break-make moment of the K switch in the size of current of electronic mutual inductor polarity test equipment output and amplifying circuit, suitable measuring current is selected according to the actual conditions of test loop, concrete, the current properties preset of flush bonding module collection comprises the first moment, DC current and the second moment; Described control module is according to described current properties outputting analog signal; The simulating signal that described power amplifier exports is: without analog signal output in the first moment, when the first moment of arrival, the simulating signal of output is DC current, when the second moment arrived, stops outputting analog signal.Concrete, the switch in the amplifying circuit of the equipment intermediate power amplifier of described test electronic mutual inductor polarity disconnects within the first moment, closes, disconnect when arriving for the second moment when reaching for the first moment.In a particular embodiment, when can to carry out pair electronic mutual inductor polarity test equipment and system, to make the first moment, the second moment more accurate.
The utility model proposes a kind of novel electronic mutual inductor polarity test equipment, can directly test from once applying direct current flow mutual inductor polarity, electronic mutual inductor polarity test equipment mainly contains following characteristics:
1, the initial value of output current, amplitude, change step and the time interval can be set; Parameter adjustable in testing, thus adapt to different test occasions.In other embodiments of the present invention, the current properties of flush bonding module collection can also be: the initial output time T0 of electric current, size of current and before the electric current output duration t:T0 moment in without analog signal output, when the arrival T0 moment, export the DC current presetting size of current, after continuing to export t, power amplifier stops outputting analog signal.
2, equipment has output power transfinites alarm, can well proterctive equipment and personal safety;
3, equipment can stop the output of analog quantity at any time.
A kind of structured flowchart testing message analysis instrument in the system of electronic mutual inductor polarity that Fig. 7 provides for the utility model embodiment, as shown in Figure 7, described message analysis instrument 100 comprises:
Message handling module 101, the SV message described in crawl;
Packet parsing module 102, is connected with described message handling module, resolves, obtain current sample waveform to described SV message;
Polarity output module 103, is connected with described packet parsing module, the polarity of electronic mutual inductor according to described current sample wave form output.Also namely message analysis instrument captures the SV message that in whole test process, electronic mutual inductor is issued, and resolves the current sample waveform obtaining issuing.Because the reference positive dirction of protective current is sensing protected element, therefore, if to be first positively biased reverse-biased again for the current sample waveform obtained, then can think that electronic mutual inductor polar configurations is positive polarity; Anti regular is configured to reversed polarity.
The function that message analysis instrument in the utility model realizes realizes by the message analysis instrument of model most of in prior art.
As implied above; a kind of method, equipment and the system of testing electronic mutual inductor polarity being that the utility model embodiment provides; by setting up the equipment be made up of flush bonding module, control module and power amplifier; the controlled DC current of size is applied from circuit primary side; capture the packet that electronic mutual inductor sends; then message analysis instrument is used to analyze the current waveform comprised in packet; obtain the polarity of electronic mutual inductor, for relevant protective relaying device and measurement, measuring apparatus true(-)running provide guarantee.
Below in conjunction with specific embodiment, a kind of method, equipment and system of testing electronic mutual inductor polarity that the utility model provides is elaborated.The main functionality block diagram of the equipment of electronic mutual inductor polarity is tested in the specific embodiment that Fig. 8 provides for the utility model, as shown in Figure 8, the electronic mutual inductor polarity test equipment that the utility model provides, its primarily of flush bonding module, control module and power amplifier three part composition.Wherein, flush bonding module major function is man-machine interaction, and tester is arranged measuring current attribute by this, also can monitor the duty of electronic mutual inductor polarity test equipment in real time simultaneously.Flush bonding module can send by bus the current properties that tester sets to control module.
Digital signal processor draws digital waveform by computing, after digital-to-analog conversion, isolation, sends small-signal to power amplifier.Power amplifier carries out power amplification to small-signal, makes it enough drive external load circuit, to ensure carrying out smoothly of test event.
Power amplifier also should have the out-of-limit protection of power simultaneously: once output power exceedes the threshold value of setting, then power amplifier quits work, and the alarm function of triggerable electronic formula mutual inductor polarity testing apparatus, to ensure the safety of the person, equipment.
The schematic diagram of amplifying circuit in the specific embodiment intermediate power amplifier that Fig. 6 provides for the utility model, as shown in Figure 6, described amplifying circuit 3031 comprises operational amplifier, multiple resistance and switch.The on-the-spot test schematic diagram of the system of electronic mutual inductor polarity is tested in the specific embodiment that Fig. 9 provides for the utility model.As shown in Figure 9, concrete testing process is as follows:
1, the ground cutter earth point of switch both sides is removed, and with wire, it is connected with the current output terminal being connected electronic mutual inductor polarity test equipment, close circuit breaker and 47,27 ground cuttves, disconnect 2G, 4G, 5G disconnecting link.The P of electric current by electronic mutual inductor should be ensured during wiring
1end flows into P
2end flows out.
2, the size of current of electronic mutual inductor polarity test equipment output and the break-make moment of K switch are arranged, select suitable measuring current according to the actual conditions of test loop.After test starts, first the K switch in electronic mutual inductor polarity test equipment is in off-state, now test loop open circuit, and electronic mutual inductor polarity test equipment does not have DC current to export; Arrive after specifying the moment, the K switch in electronic mutual inductor polarity test equipment closes automatically, connects whole test loop, and applies the DC current of setting in the loop, and the electric current that now electronic mutual inductor collects can exist Sudden Changing Rate.After being continuously applied DC current certain hour, the K switch in electronic mutual inductor polarity test equipment disconnects automatically, stops applying DC current.
3, capture with message analysis instrument the SV message that in whole test process, electronic mutual inductor is issued, and resolve the current sample waveform obtaining issuing with analytical tool.Because the reference positive dirction of protective current is sensing protected element, therefore, if to be first positively biased reverse-biased again for the current sample waveform obtained, then can think that electronic mutual inductor polar configurations is positive polarity; Anti regular is configured to reversed polarity.
In sum; the utility model embodiment provides a kind of equipment and system of testing electronic mutual inductor polarity; by setting up the equipment be made up of flush bonding module, control module and power amplifier; the controlled DC current of size is applied from circuit primary side; capture the packet that electronic mutual inductor sends; then use message analysis instrument to analyze the current waveform comprised in packet, obtain the polarity of electronic mutual inductor, for relevant protective relaying device and measurement, measuring apparatus are correctly transported
A kind of novel electronic mutual inductor polarity test equipment that the utility model proposes, can directly test from once applying direct current flow mutual inductor polarity, electronic mutual inductor polarity test equipment mainly contains following characteristics:
1, the initial value of output current, amplitude, change step and the time interval can be set; Parameter adjustable in testing, thus adapt to different test occasions;
2, equipment has output power transfinites alarm, can well proterctive equipment and personal safety;
3, equipment can stop the output of analog quantity at any time.
The beneficial effect that technical solutions of the utility model are brought comprises:
1, compared to traditional polarity test; this electronic mutual inductor polarity test equipment can direct flux in primary circuit; the SV message captured by merge cells is directly resolved and is determined polarity; disposablely can complete the verification of mutual inductor polarity and merge cells polarity, for relevant protective relaying device and measurement, measuring apparatus true(-)running provide guarantee.
2, electronic mutual inductor polarity test equipment output current is adjustable, succinctly intuitively; Negative-feedback regu-lation introduced by power amplifier, improves the precision of output current; The out-of-limit protection of power of electronic mutual inductor polarity test equipment and alarm function can be good at the protection person and device security.
Key problem in technology point of the present utility model and wish protection point are:
1, directly through-flow in primary circuit with the big current of electronic type mutual inductor polarity testing apparatus generation, disposablely can complete electronic mutual inductor and the verification of merge cells polarity.
2, the current amplification circuit of electronic mutual inductor polarity test equipment introduces negative-feedback regu-lation, improves the precision of output current.
3, the automatic controlling and adjustment power stage of electronic mutual inductor polarity test equipment, automatically complete polarity test.
4, the out-of-limit protection of the power of electronic mutual inductor polarity test equipment and alarm function can well protect the person and device security.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, the hardware that can carry out instruction relevant by computer program has come, described program can be stored in general computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Those skilled in the art can also recognize that the various functions that the utility model embodiment is listed are the designing requirements realizing depending on specific application and whole system by hardware or software.Those skilled in the art for often kind of specifically application, can use the function described in the realization of various method, but this realization can should not be understood to the scope exceeding the protection of the utility model embodiment.
Apply specific embodiment in the utility model to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (9)
1. test the equipment of electronic mutual inductor polarity for one kind, the control module it is characterized in that, the equipment of described test electronic mutual inductor polarity comprises flush bonding module, being connected with described flush bonding module by bus and the power amplifier be connected with described control module;
Described flush bonding module, gathers the current properties preset, and sends described current properties to described control module by bus;
Described control module, sends simulating signal according to described current properties to described power amplifier;
Described power amplifier, exports after carrying out power amplification to described simulating signal.
2. the equipment of test electronic mutual inductor polarity according to claim 1, it is characterized in that, described control module comprises:
Digital signal processor, determines digital waveform according to described current properties;
Digital to analog converter, is connected with described digital signal processor, carries out digital-to-analog conversion to described digital waveform;
Isolator, is connected with described digital to analog converter, and the digital waveform after logarithmic mode conversion carries out isolation processing, obtains simulating signal.
3. the equipment of test electronic mutual inductor polarity according to claim 1 and 2, it is characterized in that, described power amplifier comprises:
Amplifying circuit, carries out power amplification to described simulating signal;
Protection circuit, is connected with described amplifying circuit, when the simulating signal after described power amplification exceeds the power threshold preset, and output alarm signal.
4. the equipment of test electronic mutual inductor polarity according to claim 3, is characterized in that, described amplifying circuit comprises operational amplifier, multiple resistance and switch.
5. the equipment of test electronic mutual inductor polarity according to claim 3, it is characterized in that, described power amplifier also comprises:
Warning circuit, is connected with described protection circuit, receives the alerting signal that described protection circuit exports, reports to the police, and stopped by described power amplifier according to described alerting signal.
6. test the system of electronic mutual inductor polarity for one kind, it is characterized in that, the system of described test electronic mutual inductor polarity comprises the equipment of message analysis instrument, tested electronic mutual inductor and the test electronic mutual inductor polarity as described in claim 1 to 5 any one;
Wherein, the equipment of described test electronic mutual inductor polarity is connected with tested electronic mutual inductor;
Tested electronic mutual inductor is connected with described message analysis instrument;
The equipment of described test electronic mutual inductor polarity, according to the current properties outputting analog signal preset;
Tested electronic mutual inductor, the simulating signal described in collection, according to described analog signal output collection capacity SV message;
Described message analysis instrument, the SV message described in crawl, exports the polarity of described electronic mutual inductor according to described SV message.
7. the system of test electronic mutual inductor polarity according to claim 6, is characterized in that, in the equipment of described test electronic mutual inductor polarity:
The current properties preset of flush bonding module collection comprises the first moment, DC current and the second moment;
The simulating signal that described power amplifier exports is: without analog signal output in the first moment, when the first moment of arrival, the simulating signal of output is DC current, when the second moment arrived, stops outputting analog signal.
8. the system of test electronic mutual inductor polarity according to claim 7, it is characterized in that, switch in the amplifying circuit of the equipment intermediate power amplifier of described test electronic mutual inductor polarity disconnects within the first moment, closes, disconnect when arriving for the second moment when reaching for the first moment.
9. the system of test electronic mutual inductor polarity according to claim 7, is characterized in that, described message analysis instrument comprises:
Message handling module, the SV message described in crawl;
Packet parsing module, is connected with described message handling module, resolves, obtain current sample waveform to described SV message;
Polarity output module, is connected with described packet parsing module, the polarity of electronic mutual inductor according to described current sample wave form output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420753839.8U CN204214991U (en) | 2014-12-04 | 2014-12-04 | A kind of equipment and system of testing electronic mutual inductor polarity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420753839.8U CN204214991U (en) | 2014-12-04 | 2014-12-04 | A kind of equipment and system of testing electronic mutual inductor polarity |
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| CN204214991U true CN204214991U (en) | 2015-03-18 |
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| CN201420753839.8U Active CN204214991U (en) | 2014-12-04 | 2014-12-04 | A kind of equipment and system of testing electronic mutual inductor polarity |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652145A (en) * | 2014-12-04 | 2016-06-08 | 国家电网公司 | Method, device and system for testing polarity of electronic mutual inductor |
| CN106405264A (en) * | 2016-05-16 | 2017-02-15 | 希格玛电气(珠海)有限公司 | Automatic terminal DTU test device |
| CN112965013A (en) * | 2021-03-17 | 2021-06-15 | 国网福建省电力有限公司龙岩供电公司 | Electric power measurement V-V wiring PT secondary reverse polarity judgment device |
-
2014
- 2014-12-04 CN CN201420753839.8U patent/CN204214991U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652145A (en) * | 2014-12-04 | 2016-06-08 | 国家电网公司 | Method, device and system for testing polarity of electronic mutual inductor |
| CN106405264A (en) * | 2016-05-16 | 2017-02-15 | 希格玛电气(珠海)有限公司 | Automatic terminal DTU test device |
| CN112965013A (en) * | 2021-03-17 | 2021-06-15 | 国网福建省电力有限公司龙岩供电公司 | Electric power measurement V-V wiring PT secondary reverse polarity judgment device |
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