CN209446662U - Relay protection sample examination system based on synchronous data collection technology - Google Patents
Relay protection sample examination system based on synchronous data collection technology Download PDFInfo
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- CN209446662U CN209446662U CN201822151903.6U CN201822151903U CN209446662U CN 209446662 U CN209446662 U CN 209446662U CN 201822151903 U CN201822151903 U CN 201822151903U CN 209446662 U CN209446662 U CN 209446662U
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 31
- 238000013480 data collection Methods 0.000 title claims abstract description 13
- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 22
- 230000003993 interaction Effects 0.000 claims abstract description 8
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- 238000006243 chemical reaction Methods 0.000 claims description 10
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- 238000007689 inspection Methods 0.000 abstract description 9
- 238000012360 testing method Methods 0.000 description 13
- 230000005611 electricity Effects 0.000 description 7
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- 238000012423 maintenance Methods 0.000 description 2
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Abstract
The relay protection sample examination system based on synchronous data collection technology that the utility model discloses a kind of comprising current synchronization terminal and voltage synchronous terminal；Current synchronization terminal and voltage synchronous terminal include clock synchronization module, punctual module, CPU module, wireless communication module, human-computer interaction module；Current synchronization terminal further includes strong current generator and current measurement module, and strong current generator is electrically connected CPU module through current measurement module；Voltage synchronous terminal further includes voltage changer and voltage measurement module, and voltage changer is electrically connected CPU module through voltage measurement module；CPU module is connect with wireless communication module, and human-computer interaction module is connected with CPU module by bus；Clock synchronization module is being needed to constantly with the connection of CPU module, punctual module is connect clock synchronization with CPU module after the completion.Complicated grid switching operation is carried out when the utility model eliminates power transmission to carry out phasor inspection, substantially reduces electric power feeding time, reduces power grid risk.
Description
Technical field
The relay protection sample examination system based on synchronous data collection technology that the utility model relates to a kind of is applied to become
The phasor inspection of route optical difference protection, belongs to electric relay protection technical field in power station relay protection work.
Background technique
The simulation phasor test in substation is using the simulation phasor vehicle of DianKeYuan research and development at present, it can generate very big
Electric current run through primary equipment, achieve the purpose that simulate phasor inspection.But there are the following problems:
1) it is limited to the length of test wire, is unable to complete the survey of circuit longitudinal optical difference protection simulation phasor between station and station
Amount；
2) costly --- disregard the electric energy expended when test, only 100,000 yuan/day of instrument cost of use；
3) quantity is few --- and Southern Hebei Network, which only saves, at present send power transformation and DianKeYuan to have, and other prefecture-level units all do not have.
Costly and quantity limits its use scope less, when only 220kV and above newly-built station put into operation, can just make
With, stand in newly-increased line segregation or when main transformer interval, not will use.
4) test connection heavy workload.It generally requires to drag 10mm2 test wire when test and walks tens meters or even up to a hundred meters
Distance.
5) there is potential high pressure Danger Electric shock risk.The electric current of peaces up to a hundred is passed through in very long test wire, once test wire is exhausted
Edge is damaged, it will constitutes great threat to the safety of on-site personnel.
And when the phasor of vertical connection optical fiber differential protective is tested at present mainly by primary equipment power transmission between substation, use load
Electric current is examined.There are the following problems:
1) test effect is limited by actual load size.When power transmission, load current is too small (< %5 rated current), electric current
It is error-prone without legal phase or phase-unstable.
2) increase operation maintenance personnel grid switching operation workload, extend electric power feeding time.Operation maintenance personnel needs to be simulated according to transfer order each
The kind method of operation, operating procedure is more, and electric power feeding time is long, even more so for complicated wiring, while also increasing dangerous when power transmission
Property.
3) it is not easy to change.Phasor inaccuracy is found when power transmission, needs to pull open switch power transmission again, it will extend power transmission
Time causes to compare passively situation.
Therefore the simulation phasor inspection for route optical difference protection, is currently a blank, is used when can only rely on power transmission negative
Charged current inspection.Simultaneously because the popularization of intelligent station, is inserted into combining unit between current transformer and route protection, there is electricity
For signal to the conversion of optical signal, link is more, and route optical difference protection is made to be easier to go wrong.
Utility model content
It is high, easy to operate based on same step number that the technical problem to be solved by the utility model is to provide a kind of accuracys rate
According to the relay protection sample examination system of acquisition technique.
The utility model adopts the technical scheme that
A kind of relay protection sample examination system based on synchronous data collection technology comprising current synchronization terminal and electricity
Press synchronous terminal；
The current synchronization terminal and voltage synchronous terminal include clock synchronization module, punctual module, CPU module, channel radio
Believe module, human-computer interaction module；The current synchronization terminal further includes strong current generator and current measurement module, the big electricity
Input terminal of the output end of flow-generator through current measurement module electrical connection CPU module；The voltage synchronous terminal further includes electricity
Buckling parallel operation and voltage measurement module, the output end of the voltage changer is through the defeated of voltage measurement module electrical connection CPU module
Enter end；
The CPU module is connected by measured value output end thereon and theoretical value input terminal with wireless communication module,
The human-computer interaction module is connected with CPU module by bus；
The clock synchronization module is needing to be connected to the clock synchronization signal receiving end constantly with CPU module, institute after the completion of clock synchronization
Punctual module is stated to be connected with the punctual signal receiving end of CPU module.
Further, the invention also includes the power modules for powering to current synchronization terminal and voltage synchronous terminal.
Further, the current measurement module and voltage measurement module include filter circuit and analog to digital conversion circuit,
The output end of the strong current generator is successively electrically connected the input terminal of CPU module after filter circuit and analog to digital conversion circuit,
The output end of the voltage changer is successively electrically connected the input terminal of CPU module after filter circuit and analog to digital conversion circuit.
Further, the invention also includes data servers and display terminal；The current synchronization terminal and voltage synchronous
The output end of terminal is communicated with the receiving end of data server respectively；The display output end of the data server and display are eventually
The input signal end at end communicates.
Further, the clock synchronization module is connected with time source, and the time source includes GPS network network clock synchronization server, north
Struggle against any one of server, CDMA server and B code server.
Further, the display terminal includes the equipment that can remotely access cloud terminal.
Further, the data server, major function include: 1. communication function: can receive first station by wireless network
Next voltage, current data with the display transmission of second station, data format are considered as GB/T26865.2 association when PMU transmission data
View, suitably simplifies data frame format；2. calculation function: because the data sent on the end of station have markers, by synchronization
Data operation, described point can simultaneously be shown under polar coordinate system, be calculatedU 1WithI 1,U 1WithI 2Between angle and route protect
Protect current difference current and stalling current；3. graphical representation function: sampled value calculated result is carried out figure in polar coordinates
Change and show, and obtains first station and the report of second station sampled value；4. data storage and printing function: being installed with large capacity in server and deposit
Storage media can store multiple sampled value inspection results；5. the retransmission function of sampled value result: the sampled value result that will be calculated
The display terminal in station is returned to, expected results are compared service personnel with the actual sampled value of protective device, and judgement is adopted
Whether each link of sample is correct.Data server uses cloud terminal, mainly software development.
Further, the display terminal can visualize the result that the sampled value that data server passback comes calculates.
Expected results are compared service personnel with the actual sampled value of protective device, judge whether sampled value is correct；Display terminal
It can be Android mobile phone, tablet computer or laptop, the equipment that can remotely access cloud terminal can all become display terminal.
The beneficial effects of the utility model are as follows:
The thought of automated data distributed collection, centralized processing is applied to protection sample examination by the utility model, to rise
It flows device and replaces power rectifier inverter, the development cost that relay protection sampling globality checks equipment is greatly reduced, reduces
Test connection workload and risk.
The utility model is under capital construction state to protective current, mutual relation of electric voltage correctness and to be associated with multi-compartment differential
The consistency check and verifying of protective current sample polarity provide platform, instead of electric with load when can only pass through power transmission in the past
The status that stream and operating voltage are examined.Complicated grid switching operation is carried out when eliminating power transmission to carry out phasor inspection, is contracted significantly
Short electric power feeding time reduces power grid risk.In addition, this programme is illustrated by taking route optical difference protection as an example, for main transformer in standing
Protection, bus protection, the program stand good.
Detailed description of the invention
Fig. 1 is the structural principle block diagram of current synchronization terminal in the present invention.
Fig. 2 is the structural principle block diagram of voltage synchronous terminal in the present invention.
Fig. 3 is the relay protection sample examination schematic diagram based on synchronous data collection technology.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, 1-3 and specific implementation with reference to the accompanying drawing
Example carries out clear, complete description to utility model.
As shown in Figure 1-Figure 3, the present embodiment is related to a kind of relay protection sample examination based on synchronous data collection technology
System comprising current synchronization terminal and voltage synchronous terminal；
The current synchronization terminal and voltage synchronous terminal include clock synchronization module, punctual module, CPU module, channel radio
Believe module, human-computer interaction module；The current synchronization terminal further includes strong current generator and current measurement module, the big electricity
Input terminal of the output end of flow-generator through current measurement module electrical connection CPU module；The voltage synchronous terminal further includes electricity
Buckling parallel operation and voltage measurement module, the output end of the voltage changer is through the defeated of voltage measurement module electrical connection CPU module
Enter end；
The CPU module is connected by measured value output end thereon and theoretical value input terminal with wireless communication module,
The human-computer interaction module is connected with CPU module by bus；
The clock synchronization module is needing to be connected to the clock synchronization signal receiving end constantly with CPU module, institute after the completion of clock synchronization
Punctual module is stated to be connected with the punctual signal receiving end of CPU module.
Further, the present embodiment further includes the power supply mould for powering to current synchronization terminal and voltage synchronous terminal
Block.
Further, the current measurement module and voltage measurement module include filter circuit and analog to digital conversion circuit,
The output end of the strong current generator is successively electrically connected the input terminal of CPU module after filter circuit and analog to digital conversion circuit,
The output end of the voltage changer is successively electrically connected the input terminal of CPU module after filter circuit and analog to digital conversion circuit.
Further, the present embodiment further includes data server and display terminal；The current synchronization terminal and voltage are same
The output end of step terminal is communicated with the receiving end of data server respectively；The display output end of the data server and display
The input signal end of terminal communicates.
Further, the clock synchronization module is connected with time source, and the time source includes GPS network network clock synchronization server, north
Struggle against any one of server, CDMA server and B code server.
Further, the display terminal includes the equipment that can remotely access cloud terminal.
The thought of automated data distributed collection, centralized processing is applied to protection sample examination by the utility model, to rise
It flows device and replaces power rectifier inverter, the development cost that relay protection sampling globality checks equipment is greatly reduced, reduces
Test connection workload and risk.
To protective current, mutual relation of electric voltage correctness and multi-compartment differential protection electric current can be associated under capital construction state
The consistency of sample polarity is checked and is verified, and is examined instead of load current when can only pass through power transmission in the past and operating voltage
The status tested.Complicated grid switching operation is carried out when eliminating power transmission to carry out phasor inspection, electric power feeding time is substantially reduced, subtracts
Minor scale power net risk.
The utility model is at present in 220kV electricity paddy station, the north 220kV poplar station and the main transformer infrastructure project of king 110kV shop 1
Middle carry out engineering test, application effect is good, and test accuracy rate is up to 100%.
During 2017.10-2018.03, work in conjunction with power transmission, to the clear Wu I line of 220kV, the clear Wu II line of 220kV, 220kV
Nine outlet electric power feeding times such as Northern Mountain line are counted, and calculating average electric power feeding time is 4.3 hours.Using simulation vector inspection
After looking into system, so far 2018.04, work in conjunction with power transmission to 220kV Qi Yang line, the clear poplar line of 220kV, the Northern Mountain 110kV line etc. nine
Outlet electric power feeding time statistics, calculating average electric power feeding time is 1.4 hours.Averagely shorten electric power feeding time 2.9 hours, promotes work
Make efficiency 67.4%.Every year the economic benefit more than 2,000,000 can be brought for a prefecture-level power supply company.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It can still modify to technical solution documented by previous embodiment, or be equal to part of technical characteristic
Replacement；And these are modified or replaceed, the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
Spirit and scope.
Claims (6)
1. a kind of relay protection sample examination system based on synchronous data collection technology, it is characterised in that: it includes that electric current is same
Walk terminal and voltage synchronous terminal；
The current synchronization terminal and voltage synchronous terminal include clock synchronization module, punctual module, CPU module, radio communication mold
Block and human-computer interaction module；The current synchronization terminal further includes strong current generator and current measurement module, the high current
Input terminal of the output end of generator through current measurement module electrical connection CPU module；The voltage synchronous terminal further includes voltage
Converter and voltage measurement module, the output end of the voltage changer is through the input of voltage measurement module electrical connection CPU module
End；
The CPU module is connected by measured value output end thereon and theoretical value input terminal with wireless communication module, described
Human-computer interaction module is connected with CPU module by bus；
The clock synchronization module is needing to be connected to the clock synchronization signal receiving end constantly with CPU module, described after the completion of clock synchronization to keep
When module be connected with the punctual signal receiving end of CPU module.
2. the relay protection sample examination system according to claim 1 based on synchronous data collection technology, feature exist
In: it further includes the power module for powering to current synchronization terminal and voltage synchronous terminal.
3. the relay protection sample examination system according to claim 1 based on synchronous data collection technology, feature exist
It include filter circuit and analog to digital conversion circuit in: the current measurement module and voltage measurement module, the high current occurs
The output end of device is successively electrically connected the input terminal of CPU module, the voltage changer after filter circuit and analog to digital conversion circuit
Output end successively after filter circuit and analog to digital conversion circuit be electrically connected CPU module input terminal.
4. the relay protection sample examination system according to claim 1 based on synchronous data collection technology, feature exist
In: it further includes data server and display terminal；The output end of the current synchronization terminal and voltage synchronous terminal respectively and
The receiving end of data server communicates；The display output end of the data server and the input signal end of display terminal communicate
Letter.
5. the relay protection sample examination system according to claim 1 based on synchronous data collection technology, feature exist
In: the clock synchronization module is connected with time source, and the time source includes GPS network network clock synchronization server, Beidou server, CDMA clothes
Business any one of device and B code server.
6. the relay protection sample examination system according to claim 4 based on synchronous data collection technology, feature exist
In: the display terminal includes the equipment that can remotely access cloud terminal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444531A (en) * | 2018-12-21 | 2019-03-08 | 国家电网有限公司 | Relay protection sample examination system and its sample examination method based on synchronous clock synchronization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444531A (en) * | 2018-12-21 | 2019-03-08 | 国家电网有限公司 | Relay protection sample examination system and its sample examination method based on synchronous clock synchronization |
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