CN208386118U - A kind of transmission line of electricity self-adapting automatic recloser - Google Patents
A kind of transmission line of electricity self-adapting automatic recloser Download PDFInfo
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- CN208386118U CN208386118U CN201820988135.7U CN201820988135U CN208386118U CN 208386118 U CN208386118 U CN 208386118U CN 201820988135 U CN201820988135 U CN 201820988135U CN 208386118 U CN208386118 U CN 208386118U
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Abstract
The utility model discloses a kind of transmission line of electricity self-adapting automatic recloser, has after transmission line of electricity breaks down tripping, automatic identification nature of trouble, and transient fault is overlapped route, and permanent fault is not overlapped the function of route.Device includes functional module and interface module: functional module includes Relay Protection Unit, travelling wave ranging unit, adaptive reclosing unit；Interface module includes sampling unit, fiber unit, signal element.For the utility model while improving circuit re-switching success rate, reduction coincides with permanent fault secondary pulse caused by electric system.
Description
Technical field
The utility model belongs to field of relay protection in power, is related to a kind of transmission line of electricity self-adapting automatic recloser.
Background technique
Automatic reclosing technology is as a kind of effective measures for guaranteeing power system security power supply and stable operation, in superelevation
It is widely applied in voltage electric grid.However automatic reclosing also gives electric system band while bringing great economic benefit
Carry out some detrimental effects.It is mainly shown as when automatic reclosing coincides with permanent fault, it will make electric system again
By the impact of short circuit current, it is unfavorable for the safety and stabilization of system, while deteriorates the operating condition of electrical equipment.Needle
To the defect of automatic reclosing, scholars have done a large amount of research and have tried hard to fundamentally solve blindness COINCIDENCE PROBLEMS, that is, distinguish
Transient fault and permanent fault realize adaptive automatic reclosing mode to determine whether automatic reclosing is overlapped.
Chinese Patent Application No. CN201711380710.1, December 20 2017 applying date, publication number
CN107919648A, publication date on April 17th, 2018, a kind of entitled " anti-self-adapting automatic recloser for being overlapped impact
And method ".Described device includes: breaker, current-limiting resistance, by-pass switch, reclosing controller on distribution line；When matching
After electric line breaks down, by-pass switch is disconnected breaker tripping to put into current-limiting resistance by reclosing controller；Then it sends out
Reclosing order is by breaker closing out, and detects the electric current after reclosing；If electric current is greater than preinstalled circuit threshold value Iset
It is judged to permanent fault, at this time tripping circuit breaker again, exits reclosing；Sentence if electric current is less than preinstalled circuit threshold value Iset
For transient fault, by-pass switch is closed to exit current-limiting resistance, reclosing success.But permanent fault occurs in route
When, the self-adapting automatic recloser which provides is still to be overlapped once, causes secondary pulse to electric system.
In consideration of it, having and occurring in transmission line of electricity the utility model proposes a kind of transmission line of electricity self-adapting automatic recloser
After fault trip, automatic identification nature of trouble, transient fault is overlapped route, and permanent fault is not overlapped the function of route.
Summary of the invention
The purpose of this utility model is to provide a kind of transmission line of electricity self-adapting automatic recloser, automatic identification power transmission line
Road nature of trouble, the outlet of transient fault reclosing, permanent fault reclosing do not export.
In order to achieve the above objectives, the solution of the utility model is: a kind of transmission line of electricity self-adapting automatic recloser,
Described device has after transmission line of electricity breaks down tripping, automatic identification nature of trouble, and transient fault is overlapped route, permanently
Property failure is not overlapped the function of route；
Described device includes functional module and interface module；
The functional module includes Relay Protection Unit, travelling wave ranging unit, adaptive reclosing unit；
The interface module includes sampling unit, fiber unit, signal element；
The sampling unit is connected to relay guarantor for acquiring this side three-phase voltage current signal of transmission line of electricity, sampling unit
Protect unit, adaptive reclosing unit, travelling wave ranging unit, fiber unit；
For the fiber unit for obtaining transmission line of electricity opposite side three-phase voltage current signal, it is single that fiber unit is connected to sampling
Member, Relay Protection Unit, adaptive reclosing unit, travelling wave ranging unit；
The signal element linkage function module, for carrying out on-off model interaction with functional module；
The Relay Protection Unit connection sampling unit, fiber unit, travelling wave ranging unit and adaptive reclosing unit；
For realizing the fault trip of transmission line of electricity, and protection signal is sent to travelling wave ranging unit and adaptive reclosing list
Member；
The travelling wave ranging unit connects sampling unit, fiber unit, Relay Protection Unit, adaptive reclosing unit；
For realizing the fault localization of transmission line of electricity, and fault localization result is sent to adaptive reclosing unit；
The adaptive reclosing unit connects sampling unit, fiber unit, Relay Protection Unit, travelling wave ranging unit；
Transient fault and permanent fault for identification, and reclosing is carried out in transient fault.
Further, for the sampling unit for acquiring this side three-phase voltage current signal of transmission line of electricity, the sampling is single
Member has protection signal progress of disease circuit and travelling wave signal progress of disease circuit, the protection voltage and current obtained through protection signal progress of disease circuit
Signal is exported to Relay Protection Unit, adaptive reclosing unit, fiber unit, the traveling wave obtained through travelling wave signal progress of disease circuit
Voltage and current signal is exported to travelling wave ranging unit, fiber unit.
Further, the fiber unit is for obtaining transmission line of electricity opposite side three-phase voltage current signal, protection voltage electricity
Stream signal is exported to Relay Protection Unit and adaptive reclosing unit, and traveling wave voltage and current signal is exported to travelling wave ranging list
Member.
Transmission line of electricity self-adapting automatic recloser disclosed by the utility model, it is quasi- after transmission line of electricity breaks down tripping
Really identification permanent fault and transient fault, while improving circuit re-switching success rate, reduction coincides with permanent fault
The secondary pulse caused by electric system.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of transmission line of electricity self-adapting automatic recloser in the utility model.
Specific embodiment
Below with reference to attached drawing, the technical solution of the utility model is described in detail.
The utility model provides a kind of transmission line of electricity self-adapting automatic recloser, has and breaks down tripping in transmission line of electricity
Afterwards, automatic identification nature of trouble, transient fault are overlapped route, and permanent fault is not overlapped the function of route.
As shown in Figure 1, a kind of transmission line of electricity self-adapting automatic recloser, including functional module and interface module.
Wherein:
Functional module includes Relay Protection Unit, travelling wave ranging unit, adaptive reclosing unit；
Interface module includes sampling unit, fiber unit, signal element.
For sampling unit for acquiring this side three-phase voltage current signal of transmission line of electricity, sampling unit is connected to relay protection list
First, adaptive reclosing unit, travelling wave ranging unit, fiber unit；Sampling unit has protection signal progress of disease circuit and traveling wave
Signal progress of disease circuit, the protection voltage and current signal obtained through protection signal progress of disease circuit are exported to Relay Protection Unit, adaptive
Reclosing unit, fiber unit are answered, the traveling wave voltage and current signal obtained through travelling wave signal progress of disease circuit is exported to travelling wave ranging
Unit, fiber unit.
Fiber unit is connected to sampling unit, Relay Protection Unit, adaptive reclosing unit, travelling wave ranging unit；Light
Fine unit is exported for obtaining transmission line of electricity opposite side three-phase voltage current signal, protection voltage and current signal to Relay Protection Unit
With adaptive reclosing unit, traveling wave voltage and current signal is exported to travelling wave ranging unit.
Signal element linkage function module, for carrying out on-off model interaction with functional module；
Relay Protection Unit connects sampling unit, fiber unit, travelling wave ranging unit and adaptive reclosing unit；For
It realizes the fault trip of transmission line of electricity, and sends protection signal to travelling wave ranging unit and adaptive reclosing unit；
Travelling wave ranging unit connects sampling unit, fiber unit, Relay Protection Unit, adaptive reclosing unit；For
It realizes the fault localization of transmission line of electricity, and sends fault localization result to adaptive reclosing unit；
Adaptive reclosing unit connects sampling unit, fiber unit, Relay Protection Unit, travelling wave ranging unit；For
It identifies transient fault and permanent fault, and carries out reclosing in transient fault.
After adaptive reclosing unit receives protection signal, according to protection voltage and current signal and fault localization result
It calculates the faulted phase voltage of fault point: being judged to instantaneity event if the faulted phase voltage of fault point is greater than threshold value Uset
Barrier, reclosing outlet；It is judged to permanent fault if the faulted phase voltage of fault point is less than threshold value Uset, reclosing does not go out
Mouthful.
Above embodiments are only to illustrate the technical idea of the utility model, and the protection model of the utility model cannot be limited with this
Enclose, it is all according to the utility model proposes technical idea, any changes made on the basis of the technical scheme each falls within this reality
Within the scope of novel protected.
Claims (3)
1. a kind of transmission line of electricity self-adapting automatic recloser, it is characterised in that: described device includes functional module and interface module；
The functional module includes Relay Protection Unit, travelling wave ranging unit, adaptive reclosing unit；
The interface module includes sampling unit, fiber unit, signal element；
For the sampling unit for acquiring this side three-phase voltage current signal of transmission line of electricity, sampling unit is connected to relay protection list
First, adaptive reclosing unit, travelling wave ranging unit, fiber unit；
The fiber unit for obtaining transmission line of electricity opposite side three-phase voltage current signal, fiber unit be connected to sampling unit,
Relay Protection Unit, adaptive reclosing unit, travelling wave ranging unit；
The signal element linkage function module, for carrying out on-off model interaction with functional module；
The Relay Protection Unit connection sampling unit, fiber unit, travelling wave ranging unit and adaptive reclosing unit；For
It realizes the fault trip of transmission line of electricity, and sends protection signal to travelling wave ranging unit and adaptive reclosing unit；
The travelling wave ranging unit connects sampling unit, fiber unit, Relay Protection Unit, adaptive reclosing unit；For
It realizes the fault localization of transmission line of electricity, and sends fault localization result to adaptive reclosing unit；
The adaptive reclosing unit connects sampling unit, fiber unit, Relay Protection Unit, travelling wave ranging unit；For
It identifies transient fault and permanent fault, and carries out reclosing in transient fault.
2. a kind of transmission line of electricity self-adapting automatic recloser as described in claim 1, it is characterised in that: the sampling unit is used
In acquisition this side three-phase voltage current signal of transmission line of electricity, the sampling unit has protection signal progress of disease circuit and travelling wave signal
Progress of disease circuit, the protection voltage and current signal obtained through protection signal progress of disease circuit are exported to Relay Protection Unit, adaptive weight
Combined floodgate unit, fiber unit, through travelling wave signal progress of disease circuit obtain traveling wave voltage and current signal export to travelling wave ranging unit,
Fiber unit.
3. a kind of transmission line of electricity self-adapting automatic recloser as claimed in claim 2, it is characterised in that: the fiber unit is used
In obtaining transmission line of electricity opposite side three-phase voltage current signal, protection voltage and current signal is exported to Relay Protection Unit and adaptive
Reclosing unit, traveling wave voltage and current signal are exported to travelling wave ranging unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820988135.7U CN208386118U (en) | 2018-06-25 | 2018-06-25 | A kind of transmission line of electricity self-adapting automatic recloser |
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| CN201820988135.7U CN208386118U (en) | 2018-06-25 | 2018-06-25 | A kind of transmission line of electricity self-adapting automatic recloser |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110456229A (en) * | 2019-08-22 | 2019-11-15 | 清华大学 | A kind of Single Terminal Traveling Wave Fault Location device of distribution line |
| CN110456228A (en) * | 2019-08-22 | 2019-11-15 | 清华大学 | A kind of fault distance-finding method of transmission line of electricity |
-
2018
- 2018-06-25 CN CN201820988135.7U patent/CN208386118U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110456229A (en) * | 2019-08-22 | 2019-11-15 | 清华大学 | A kind of Single Terminal Traveling Wave Fault Location device of distribution line |
| CN110456228A (en) * | 2019-08-22 | 2019-11-15 | 清华大学 | A kind of fault distance-finding method of transmission line of electricity |
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