CN204244203U - A kind of system of testing relay-protection tester Time delay - Google Patents
A kind of system of testing relay-protection tester Time delay Download PDFInfo
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Abstract
The utility model provides a kind of system of testing relay-protection tester Time delay, comprises and triggers message generating means, optical splitter, message accounting analyzer and relay-protection tester; Trigger message generating means to be connected with optical splitter by optical fiber; Optical splitter is connected with message accounting analyzer and relay-protection tester by optical fiber; Relay-protection tester is connected with message accounting analyzer by optical fiber; Trigger message generating means, send triggering signal to optical splitter; Optical splitter, is sent to message accounting analyzer and tested relay-protection tester by triggering signal; Relay-protection tester, sends the message preset to message accounting analyzer according to triggering signal; Message accounting analyzer, according to the Time delay error triggering message and the message that presets and export relay-protection tester.The utility model is eliminated the impact of time error on test result, and reduces the test error in intermediate links such as transfer of data, data storages.
Description
Technical field
The utility model, about the intelligent substation technical field in electric power system, particularly about the detection technique field of relay-protection tester in intelligent substation, is a kind of system of testing relay-protection tester Time delay 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.As instrument important in intelligent substation test, the digital relay protection tester performance replacing traditional analog amount to export with digital signals such as sampled value SV message and GOOSE message determines the debugging effect of the secondary equipment of intelligent converting stations such as protective relaying device, merge cells, intelligent terminal to a great extent.Therefore, the detection for digital relay protection tester performance is most important.
IEC61850 standard is the fundamental norms of intelligent substation, along with a large amount of construction of intelligent substation, uses the protective relaying device based on optical fiber interface of IEC61850 standard to start a large amount of use.To the test of digital relay protection device in intelligent substation, have very important meaning to the safe operation of electrical network, traditional analog quantity relay-protection tester can not meet the demands.Precisely reliable its test result of guarantee of tester performance reasonable, credible.But to emerging digital protective relay tester, also lack unified, rational method of testing and standard at present.
The method of testing to digitlization relay-protection tester Time delay generally adopted at present as shown in Figure 2.Tested digital relay protection tester passes through Fiber connection with master clock and packet catcher respectively.Wherein, when master clock is used for digital relay protection tester pair, the GOOSE message that packet catcher sends for capturing digital relay protection tester.Concrete testing procedure is as follows:
(1) test macro is as shown in Figure 2 built.
(2) when using master clock to tested digital relay protection tester pair.
(3) master clock is set and sends trigger impulse at certain setting-up time T, after tested digital relay protection tester receives trigger impulse, send pre-set GOOSE or SV message at once.
(4) packet catcher is used to capture GOOSE or the SV message of tested digital relay protection tester transmission; check the generation moment T1 of message; compare with setting delivery time T, its difference (T1-T) is GOOSE or the SV trigger error of this tested digital relay protection tester.
The above-mentioned existing mensuration scheme for digital relay protection tester Time delay, the data that test obtains are accurate not, there is following technological deficiency:
In industry standard, the trigger error of digitlization relay-protection tester is required it is 0.5 millisecond, to the test of such tiny time, the error of each link should be reduced as far as possible.Above method of testing can following several in produce test error:
(1) device being tested to time error.In above-mentioned test macro, whole test is carried out based on absolute time, each device pair time may produce error, finally test result is had an impact.
(2) master clock is to time error.In whole test process, time master clock being sent trigger impulse has also arrived in the middle of trigger error; Master clock sends trigger impulse itself will have error with the absolute time of setting, and may lag also may be advanced; Due to the trigger error inherently atomic little time, in the middle of this deviation accumulation to trigger error, may be essence on the impact of test result.
(3) time delay produced in packet catcher record data process.Packet catcher to can transmit data, read, compress in data recording process, the process such as storage, generation time delay, causes measure error.
Therefore, how carrying out effective Accurate Measurement to the Time delay of digitlization relay-protection tester 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 mensuration scheme of digital relay protection tester Time delay exists, the utility model embodiment provides a kind of system of testing relay-protection tester Time delay, triggering signal is provided to tested digital relay protection tester by triggering message generating means, the message that message accounting analyzer record triggering signal and digital relay protection tester send, and then the time interocclusal record of the two-way message due in be received by message accounting analyzer is determined to receive and is triggered message and the time difference receiving the first frame message, this time difference is the triggering accuracy error of tested relay-protection tester.
The purpose of this utility model is, provides a kind of system of testing relay-protection tester Time delay, and described system comprises triggering message generating means, optical splitter, message accounting analyzer and tested relay-protection tester; Wherein, described triggering message generating means is connected with described optical splitter by optical fiber; Described optical splitter is connected with described message accounting analyzer and tested relay-protection tester by optical fiber; Described relay-protection tester is connected with described message accounting analyzer by optical fiber; Described triggering message generating means, send triggering signal to described optical splitter, described triggering signal is light signal; Described optical splitter, is sent to described message accounting analyzer and tested relay-protection tester by described triggering signal; Described relay-protection tester, sends the message preset to described message accounting analyzer according to described triggering signal; Described message accounting analyzer, according to described triggering message and described in the message that presets export the Time delay error of described relay-protection tester.
In preferred implementation of the present utility model, the triggering signal that described triggering message generating means sends is GOOSE message, uses quantity of state in described GOOSE message as triggering command.
In preferred implementation of the present utility model, the operating state of described relay-protection tester is trigger mode, and the message preset that described relay-protection tester sends is GOOSE data, and described GOOSE data are switching value or clock.
In preferred implementation of the present utility model, the operating state of described relay-protection tester is trigger mode, and the message preset that described relay-protection tester sends is sampled value SV data.
In preferred implementation of the present utility model, described message accounting analyzer is network message analyzer.
In preferred implementation of the present utility model, described relay-protection tester is digital protective relay tester
The beneficial effects of the utility model are, the utility model embodiment provides a kind of system of testing relay-protection tester Time delay, triggering signal is provided to tested digital relay protection tester by triggering message generating means, the message that message accounting analyzer record triggering signal and digital relay protection tester send, and then the time interocclusal record of the two-way message due in be received by message accounting analyzer is determined to receive and is triggered message and the time difference receiving the first frame message, this time difference is the triggering accuracy error of tested relay-protection tester, establish the testing scheme that does not rely on absolute time, and eliminate the impact of time error on test result, and reduce in transfer of data, the test error of the intermediate links such as data storage.
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 relay-protection tester Time delay that Fig. 1 provides for the utility model embodiment;
Fig. 2 is that in prior art, digital relay protection tester triggers accuracy testing scheme schematic diagram;
A kind of system testing waveform schematic diagram testing relay-protection tester Time delay that Fig. 3 provides for the utility model embodiment.
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 gathering, 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.
Digital protective relay tester: for testing the tester of digital relay protection device.Tester generally adopts the technology such as high-performance PowerPC processor, large-scale F PGA, ethernet communication; can support that IEC60044-8 (FT3), IEC61850-9-1, IEC61850-9-2 and GOOSE light digital signal access; GOOSE, SV message can be sent according to arranging; can receive and output traditional switch amount, GOOSE switching value, for IEC61850 protective relaying device, IED etc. provide complete testing scheme.
GOOSE：Generic Object Oriented Substation Event。GOOSE is a kind of transformer substation case towards general object.Be mainly used in realizing the information transmission between many IED, comprise transmission breaker tripping and closing signal (order), there is the high-transmission probability of success.
Optical splitter: optical splitter is a kind of passive device, and they do not need external energy, as long as there is input light.Optical splitter is made up of incident and exit slit, speculum and dispersion element, and its effect is separated by required resonance absorption line.The critical component of optical splitter is dispersion element.
The utility model relates to the relaying protection technical field of automation of power engineering, specifically a kind of method of testing digitlization relay-protection tester synchronously being triggered to GOOSE accuracy.
The utility model mainly solves the existing coarse problem of mensuration for digital relay protection tester Time delay.A kind of structured flowchart testing the system of relay-protection tester Time delay that Fig. 1 provides for the utility model embodiment; as shown in Figure 1, this system comprises: trigger message generating means 100, optical splitter 200, message accounting analyzer 300 and tested relay-protection tester 400.
Wherein, described triggering message generating means 100 is connected with described optical splitter 200 by optical fiber;
Described optical splitter 200 is connected with described message accounting analyzer 300 and tested relay-protection tester 400 by optical fiber;
Described relay-protection tester 400 is connected with described message accounting analyzer 300 by optical fiber;
Described triggering message generating means 100, send triggering signal to described optical splitter, described triggering signal is light signal.This programme uses light signal as triggering signal, and triggering signal can be GOOSE message etc., and concrete consideration is as follows:
(1) if use the signal of telecommunication as triggering signal, and the GOOSE/SV signal that tested relay-protection tester sends is light signal, and message accounting analytical equipment is inconsistent to the reception of light signal message and the signal of telecommunication, process time delay, thus introduces error;
(2) use light signal as triggering signal, the impact of electromagnetic interference on test can be reduced.
Described optical splitter 200, for being sent to described message accounting analyzer and tested relay-protection tester by described triggering signal;
Described relay-protection tester 400, for sending the message preset to described message accounting analyzer according to described triggering signal.Also namely, in embodiments, set the triggering mode of tested digital relay protection tester, setting is while it receives triggering signal, and send the message of specifying, it is GOOSE data, and described GOOSE data are switching value or clock.Also namely, in other execution modes of the present utility model, set the triggering mode of tested digital relay protection tester, setting is while it receives triggering signal, and send the message of specifying, it is sampled value SV data.
Described message accounting analyzer 300, for according to described triggering message and described in the message that presets export the Time delay error of described relay-protection tester.Also namely, in a particular embodiment, by checking the time interocclusal record of the two-way message due in that message accounting analyzer receives, can determine to receive and triggering message and the time difference receiving the first frame GOOSE/SV.The GOOSE/SV that this time difference is tested relay-protection tester triggers accuracy error, and a kind of system testing waveform schematic diagram testing relay-protection tester Time delay that Fig. 3 provides for the utility model embodiment, in figure shown in △ t.
The network message analyzer that the utility model is selected is general network message analysis instrument of the prior art; it can realize following function: the triggering message that each light mouth capturing measured number relay-protection tester sends; corresponding voltage or current waveform can be generated according to triggering message, automatically can calculate the time difference of triggering SV waveform and the message preset.
Requirement to tested instrument and testing tool:
Require that network message analyzer can carry out real time record to triggering message, temporal resolution is better than 1us, can be illustrated as waveform to triggering message and compare, and can add up the specified delay data of triggering message;
Require that the specified time delay of triggering message in tested digital relay protection tester can be arranged and simulate.
In a particular embodiment; trigger triggering signal that message generating means sends through Fiber connection to optical splitter; divide two-way to be connected to tested relay-protection tester and message accounting analyzer respectively by optical splitter, guarantee that the triggering signal arriving device being tested and message accounting analytical equipment is simultaneously like this.Use the consideration of optical splitter as follows:
(1) triggering signal being sent to device being tested and message accounting analyzer should be homology.If use two mouths of not sharing the same light triggering message generating means send triggering signal and do not use optical splitter, so the transmitting time of these two light transmit ports there are differences, and can introduce test error.
(2) optical splitter principle is physics light splitting, and the two ways of optical signals separated is as broad as long in time delay.But optical splitter can not replace with switch, because switch forwards after being reception data buffer storage, may there are differences in data buffer storage, process, repeating process between port, thus introduce error.
In preferred implementation of the present utility model, the triggering signal that described triggering message generating means sends is set to GOOSE message, uses quantity of state in described GOOSE message as triggering command.Also the triggering message generating means namely in this test macro can provide GOOSE to export as triggering signal.
In the system shown in figure 1, first set the triggering mode of tested digital relay protection tester, setting, while it receives triggering signal, sends GOOSE or the SV message of specifying; Trigger message generating means send triggering message by optical splitter respectively to tested digital relay protection tester and message accounting analyzer simultaneously; Message accounting analyzer records the triggering message from optical splitter and the GOOSE message from tested digital relay protection tester or SV message respectively.
As mentioned above; be a kind of system of testing relay-protection tester Time delay that the utility model embodiment provides; triggering signal is provided to tested digital relay protection tester by triggering message generating means; the message that message accounting analyzer record triggering signal and digital relay protection tester send; and then the time interocclusal record of the two-way message due in be received by message accounting analyzer is determined to receive and triggered message and the time difference receiving the first frame message, this time difference is the triggering accuracy error of tested relay-protection tester.
Below in conjunction with specific embodiment, a kind of system of testing relay-protection tester Time delay that the utility model provides is elaborated.When testing according to this programme, first carry out building of test macro according to Fig. 1.Trigger message generating means and use Fiber connection, for tested device provides triggering signal by optical splitter and tested device, message accounting analyzer; Tested device is directly connected by optical fiber with message accounting analyzer, and during test, tested device sends GOOSE or SV data by optical fiber to message accounting analyzer.This programme both can be tested GOOSE Time delay, and also can test SV Time delay, testing scheme is identical.In this test case, use GOOSE message as triggering signal.
The present embodiment is the test to GOOSE Time delay, first arranges equipment:
(1), triggering message generating means is set.GOOSE message for triggering being set, using a quantity of state in this GOOSE as triggering command, naming this switching value to be k1.
(2), tested device is set.Arranging its operating state is trigger mode, and GOOSE or the SV data that inking device will occur after receiving triggering signal.Setting tested device receives and triggers tested device when quantity of state k1 in GOOSE message is indexed to TURE by FALSE and be triggered.
Start below to test:
(1), arrange in the transmission of triggering message generating means GOOSE, GOOSE and comprise triggering command k1 and k1=FALSE; This GOOSE2 message data issues tested device and message accounting analyzer respectively by optical splitter simultaneously.
(2), the GOOSE Frame triggering message generating means transmission instruction k1=TURE is set.
(3), tested device receive triggering signal after (i.e. instruction k1=TURE), tested device is triggered, and sends pre-set GOOSE or SV Frame.
(4), use message accounting analyzer to record message that in whole process of the test, tested device sends and trigger time of triggering message, particularly triggering signal that message generating means sends and the first frame GOOSE that tested device sends.
(5), to the message of message accounting analyzer record analyze, obtain tested device and send the time delay of the first frame GOOSE message relative to triggering signal, this time delay is exactly the triggering accuracy error of digital relay protection tester.
As shown in Figure 3, the first frame GOOSE message that triggering signal and tested device send is represented in one drawing, wherein time △ t is the time delay relative to triggering signal of GOOSE message that tested device (digital relay protection tester) sends.Time △ t can by checking that the time that message accounting analyzer receives triggering signal and the Time Calculation receiving the first frame GOOSE1 message obtain.
In sum, the utility model embodiment provides a kind of system of testing relay-protection tester Time delay, triggering signal is provided to tested digital relay protection tester by triggering message generating means, the message that message accounting analyzer record triggering signal and digital relay protection tester send, and then the time interocclusal record of the two-way message due in be received by message accounting analyzer is determined to receive and is triggered message and the time difference receiving the first frame message, this time difference is the triggering accuracy error of tested relay-protection tester, establish the testing scheme that does not rely on absolute time, and eliminate the impact of time error on test result, and reduce in transfer of data, the test error of the intermediate links such as data storage.
Key problem in technology point of the present utility model and wish protection point comprise:
(1), this test uses light signal (generally selecting GOOSE message) as triggering signal instead of electric potential signal as triggering signal.Message accounting analytical equipment is different to the reception of electric potential signal and light message signals, process time delay, error can be introduced, so the utility model adopts light signal as triggering signal when message that device being tested sends is optical information when triggering signal is electric potential signal.
(2), trigger message generating means and send triggering signal respectively to tested digital relay protection tester and message accounting device by optical splitter simultaneously.Use optical splitter instead of use two light mouths to send triggering signal, ensure that homology and the synchronism of triggering signal.Optical splitter can not be replaced with optical switch because there is the process of data storage forwarding in switch, after forwarding out from two different light mouths may time delay different, thus introduce error.
(3), this method of testing do not rely on absolute time, with eliminate due to pair time and the measure error introduced.The utility model is by comparing message accounting device triggering signal moment and the first frame GOOSE message moment; the relative time obtaining two moment is poor; this time difference is the error that tested digital relay protection tester synchronously triggers GOOSE; when test process does not need pair; do not rely on absolute time, eliminate in traditional test scheme due to pair time introduce measure error.
(4), message accounting device receives the triggering signal of triggering message generating means transmission and the GOOSE message of tested device transmission, to reach the object of time delay in counteracting triggering signal transmissions process, the accuracy of increase test result simultaneously.
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 AccessMemory, 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 execution mode, 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 (6)
1. test a system for relay-protection tester Time delay, it is characterized in that, the system of described test relay-protection tester Time delay comprises triggering message generating means, optical splitter, message accounting analyzer and tested relay-protection tester;
Wherein, described triggering message generating means is connected with described optical splitter by optical fiber;
Described optical splitter is connected with described message accounting analyzer and tested relay-protection tester by optical fiber;
Described relay-protection tester is connected with described message accounting analyzer by optical fiber;
Described triggering message generating means, send triggering signal to described optical splitter, described triggering signal is light signal;
Described optical splitter, is sent to described message accounting analyzer and tested relay-protection tester by described triggering signal;
Described relay-protection tester, sends the message preset to described message accounting analyzer according to described triggering signal;
Described message accounting analyzer, according to described triggering message and described in the message that presets export the Time delay error of described relay-protection tester.
2. the system of test relay-protection tester Time delay according to claim 1, is characterized in that, the triggering signal that described triggering message generating means sends is GOOSE message, uses quantity of state in described GOOSE message as triggering command.
3. the system of test relay-protection tester Time delay according to claim 2; it is characterized in that; the operating state of described relay-protection tester is trigger mode; the message preset that described relay-protection tester sends is GOOSE data, and described GOOSE data are switching value or clock.
4. the system of test relay-protection tester Time delay according to claim 3; it is characterized in that; the operating state of described relay-protection tester is trigger mode, and the message preset that described relay-protection tester sends is sampled value SV data.
5. the system of the test relay-protection tester Time delay according to claim 3 or 4, is characterized in that, described message accounting analyzer is network message analyzer.
6. the system of the test relay-protection tester Time delay according to claim 3 or 4, is characterized in that, described relay-protection tester is digital protective relay tester.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469593A (en) * | 2015-11-27 | 2016-04-06 | 国家电网公司 | Intelligent substation optical fiber interface online data mapping transmission method |
| CN105471572A (en) * | 2016-01-06 | 2016-04-06 | 国电南瑞科技股份有限公司 | Synchronous time measurement method based on GOOSE message |
| CN105720959A (en) * | 2014-12-04 | 2016-06-29 | 国家电网公司 | Method and system for testing trigger time-delay of relay protection tester |
| CN111751776A (en) * | 2020-07-03 | 2020-10-09 | 国网四川省电力公司电力科学研究院 | Time verification system and method for digital relay protection tester |
-
2014
- 2014-12-04 CN CN201420754859.7U patent/CN204244203U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720959A (en) * | 2014-12-04 | 2016-06-29 | 国家电网公司 | Method and system for testing trigger time-delay of relay protection tester |
| CN105720959B (en) * | 2014-12-04 | 2019-01-25 | 国家电网公司 | A kind of method and system for testing relay-protection tester Time delay |
| CN105469593A (en) * | 2015-11-27 | 2016-04-06 | 国家电网公司 | Intelligent substation optical fiber interface online data mapping transmission method |
| CN105471572A (en) * | 2016-01-06 | 2016-04-06 | 国电南瑞科技股份有限公司 | Synchronous time measurement method based on GOOSE message |
| CN105471572B (en) * | 2016-01-06 | 2018-06-29 | 国电南瑞科技股份有限公司 | A kind of time synchronized measurement method based on GOOSE message |
| CN111751776A (en) * | 2020-07-03 | 2020-10-09 | 国网四川省电力公司电力科学研究院 | Time verification system and method for digital relay protection tester |
| CN111751776B (en) * | 2020-07-03 | 2022-10-21 | 国网四川省电力公司电力科学研究院 | Time verification system and method for digital relay protection tester |
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