CN206742848U - 110kV electric railway circuit optical fiber differential protective systems - Google Patents
110kV electric railway circuit optical fiber differential protective systems Download PDFInfo
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- CN206742848U CN206742848U CN201720543167.1U CN201720543167U CN206742848U CN 206742848 U CN206742848 U CN 206742848U CN 201720543167 U CN201720543167 U CN 201720543167U CN 206742848 U CN206742848 U CN 206742848U
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Abstract
It the utility model is related to 110kV electric railway circuit optical fiber differential protective systems, including the 110kV circuit optical fiber differential protection harvesters of the 110kV circuit optical fibers differential protection of the electricity grid substation connected by OPGW optical cables and 110kV Traction Stations；CPU is provided with described 110kV circuit optical fiber differential protection harvesters; and it is connected to the electric current plug-in unit opened into plug-in unit and the collection 110kV Traction Stations magnitude of current that 110kV Traction Stations quantity of state is gathered between CPU and the 110kV Traction Stations; the CPU is also connected with communication plug, and communication plug is connected to the 110kV circuit optical fiber differential protections of the electricity grid substation by described OPGW optical cables；The breaker that 110kV circuit optical fibers differential protection passes through cable connection to electricity grid substation.The utility model can be when 110kV circuits break down; quick excision fault current; failure propagation is avoided, the normal work of the 110kV circuit optical fiber differential protections of electricity grid substation side has well been ensured, has met power system security stable operation requirement well.
Description
Technical field
Differential protective system is the utility model is related to, is concretely 110kV electric railway circuit optical fiber differential protections
System.
Background technology
According to existing railway system's professional standard, the 110kV Traction Stations side of 110kV electric railway transmission lines of electricity is not
110kV line protective devices are configured, transformer station is responsible for protection by grid company.Meanwhile 110kV Traction Stations side does not also configure
Breaker, (breaker can disconnect high current during short circuit to a configuration load switch, and on-load switch can only disconnect normal work electricity
Stream), even if configuration 110kV line protective devices, can not pass through Traction Station interrupting short circuit.
Grid company in order to ensure the safe and stable operation of power system, it is necessary to configure can quickly cut off 110kV circuits therefore
The route protection of barrier, i.e. 110kV fiber differential protection devices.If can not quickly cut off failure when breaking down, and only adopt
Handled with protection devices such as distance protection, overcurrent protections, the time of failure removal can be long, and then causes failure to expand
Greatly, more circuits or transformer station is caused to trip.
Traditional 110kV fiber differential protection devices need that the normal work of ability is respectively configured in transmission line of electricity both sides transformer station
Make.But the 110kV Traction Stations side of 110kV electric railway transmission lines of electricity does not configure line protective devices, therefore can not realize optical fiber
Differential protection function, i.e., it can not meet power system security stable operation requirement.
Utility model content
The utility model provides a kind of 110kV electric railways circuit optical fiber differential protective system, to realize that power network becomes
The 110kV circuit optical fiber differential protection normal works of power station side, quickly cut off fault current, meet that power system security is stable and transport
Row requires.
110kV electric railways circuit optical fiber differential protective system of the present utility model, including connected by OPGW optical cables
The 110kV circuit optical fibers differential protection of electricity grid substation and the 110kV circuit optical fiber differential protections of 110kV Traction Stations adopt
Acquisition means；CPU is provided with described 110kV circuit optical fiber differential protection harvesters, and is connected to CPU and described
Opening for 110kV Traction Stations quantity of state is gathered between 110kV Traction Stations to insert with the electric current for gathering the 110kV Traction Stations magnitude of current into plug-in unit
Part, the CPU are also connected with communication plug, and communication plug is connected to the electricity grid substation by described OPGW optical cables
110kV circuit optical fiber differential protections；110kV circuit optical fibers differential protection passes through cable connection to electricity grid substation
Breaker.
By the way that 110kV circuit optical fiber differential protections harvester is located at into 110kV Traction Stations side, collection 110kV Traction Stations
The magnitude of current and switching value of side, and the action drawn by CPU progress logical operations allow signal, then pass through OPGW optical cables
(OPGW) allows signal to be transferred to the electricity grid substation of offside the magnitude of current, switching value and action, just can
Realize the normal work to electricity grid substation side 110kV circuit optical fiber differential protections.110kV circuit optical fiber differential protections lead to
Cross cable connection to the control loop of the breaker of electricity grid substation, 110kV circuit optical fibers differential protection one and start open circuit
The control loop of device, just fault current has been cut off in tripping to breaker.Because 110kV circuit optical fiber differential protections possess quickly
Acting characteristic, therefore fault current can be quickly cut off, the function of protection 110kV electric railway circuits is realized, is met
Power system security stable operation requirement.
The 110kV fiber differential protection devices and current acquisition plug-in unit of wherein described electricity grid substation, open into plug-in unit etc.
It can use existing equipment, and such as cpu logic computing that is directed to of the utility model and control program, can be by this area
Technical staff realizes according to routine techniques.
Further, the I/O ends of 110kV circuit optical fibers differential protection harvester are connected with display dress by control module
Put.Control device can be configured and operate to system, and display device can facilitate operating personnel to check control information.
Further, described 110kV circuit optical fibers differential protection also with the 110kV circuit optical fibers differential protection
The communication plug-in unit connection of harvester, to realize information exchange.
Further, described 110kV Traction Stations are connected by cable and described electric current plug-in unit and opening into plug-in unit.
Preferably, the external plug-in component being connected with CPU is additionally provided with 110kV circuit optical fiber differential protection harvesters to connect
Mouthful, it is convenient that system is extended.
110kV electric railways circuit optical fiber differential protective system of the present utility model, 110kV electric railways can be worked as
When circuit breaks down, fault current is quickly cut off, avoids failure propagation, has well ensured the 110kV of electricity grid substation side
The normal work of circuit optical fiber differential protection, power system security stable operation requirement is met well.
Embodiment with reference to embodiments, the above of the present utility model is remake further specifically
It is bright.But the scope that this should not be interpreted as to the above-mentioned theme of the utility model is only limitted to following example.It is new not departing from this practicality
In the case of the above-mentioned technological thought of type, the various replacements or change made according to ordinary skill knowledge and customary means,
It should be included in the scope of the utility model.
Brief description of the drawings
Fig. 1 is the system block diagram of the utility model 110kV electric railway circuit optical fiber differential protective systems.
Embodiment
The utility model 110kV electric railway circuit optical fiber differential protective systems as shown in Figure 1, including pass through OPGW light
The differential guarantor of 110kV circuit optical fibers of the 110kV circuit optical fibers differential protection and 110kV Traction Stations of cable connection electricity grid substation
Protect harvester.Be provided with CPU in 110kV circuit optical fiber differential protection harvesters, and be connected to repeatedly by cable CPU and
Opening into plug-in unit and the collection 110kV Traction Stations magnitude of current for 110kV Traction Stations quantity of state is gathered between the 110kV Traction Stations
Electric current plug-in unit.The external plug-in component interface being connected with CPU is additionally provided with 110kV circuit optical fiber differential protection harvesters, it is convenient
System is extended.The CPU is also connected with control module and communication plug respectively, and the I/O ends of control module are connected with aobvious
Showing device, control module can be configured and operate to system, and display device can facilitate operating personnel to check control information.
Described communication device is connected to the 110kV fiber differential protection devices of the electricity grid substation by described OPGW optical cables,
110kV circuit optical fibers differential protection is protected by the breaker of cable connection to electricity grid substation by 110kV optical differentials
The control loop that protection unit starts breaker makes breaker tripping disengagement failure electric current, to realize to 110kV electric railway lines
The protection on road.Wherein described 110kV fiber differential protection devices can use existing equipment, to reduce system building cost.
Communication plug-in unit of the 110kV fiber differential protection devices also with the 110kV circuit optical fibers differential protection harvester is connected, with reality
Existing information exchange.
Claims (5)
1.110kV electric railway circuit optical fiber differential protective systems, it is characterized in that：Including the power network connected by OPGW optical cables
The 110kV circuit optical fibers differential protection of transformer station and the 110kV circuit optical fibers differential protection collection dress of 110kV Traction Stations
Put；CPU is provided with described 110kV circuit optical fiber differential protection harvesters, and is connected to CPU and the 110kV is led
Draw the electric current plug-in unit opened into plug-in unit and the collection 110kV Traction Stations magnitude of current that 110kV Traction Stations quantity of state is gathered between standing, it is described
CPU is also connected with communication plug, and communication plug is connected to the 110kV circuits of the electricity grid substation by described OPGW optical cables
Fiber differential protection device；The breaker that 110kV circuit optical fibers differential protection passes through cable connection to electricity grid substation.
2. 110kV electric railways circuit optical fiber differential protective system as claimed in claim 1, it is characterized in that：110kV circuits
The I/O ends of optical fiber differential protective harvester are connected with display device by control module.
3. 110kV electric railways circuit optical fiber differential protective system as claimed in claim 1, it is characterized in that：Described
Communication plug-in unit of the 110kV circuit optical fibers differential protection also with the 110kV circuit optical fibers differential protection harvester is connected.
4. the 110kV electric railway circuit optical fiber differential protective systems as described in one of claims 1 to 3, it is characterized in that：Institute
The 110kV Traction Stations stated are connected by cable and described electric current plug-in unit and opening into plug-in unit.
5. the 110kV electric railway circuit optical fiber differential protective systems as described in one of claims 1 to 3, it is characterized in that：
The external plug-in component interface being connected with CPU is additionally provided with 110kV circuit optical fiber differential protection harvesters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720543167.1U CN206742848U (en) | 2017-05-16 | 2017-05-16 | 110kV electric railway circuit optical fiber differential protective systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720543167.1U CN206742848U (en) | 2017-05-16 | 2017-05-16 | 110kV electric railway circuit optical fiber differential protective systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206742848U true CN206742848U (en) | 2017-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720543167.1U Active CN206742848U (en) | 2017-05-16 | 2017-05-16 | 110kV electric railway circuit optical fiber differential protective systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113098591A (en) * | 2021-02-24 | 2021-07-09 | 云谷技术(珠海)有限公司 | Distributed DTU optical fiber differential protection circuit |
-
2017
- 2017-05-16 CN CN201720543167.1U patent/CN206742848U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113098591A (en) * | 2021-02-24 | 2021-07-09 | 云谷技术(珠海)有限公司 | Distributed DTU optical fiber differential protection circuit |
| CN113098591B (en) * | 2021-02-24 | 2022-04-01 | 云谷技术(珠海)有限公司 | Distributed DTU optical fiber differential protection circuit |
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