CN206790208U - Outside emergency power supply access device - Google Patents
Outside emergency power supply access device Download PDFInfo
- Publication number
- CN206790208U CN206790208U CN201720507953.6U CN201720507953U CN206790208U CN 206790208 U CN206790208 U CN 206790208U CN 201720507953 U CN201720507953 U CN 201720507953U CN 206790208 U CN206790208 U CN 206790208U
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Abstract
The utility model discloses a kind of outside emergency power supply access device, including dual-power transfer switch, switch with knifeshaped fuse and locking relay；The leading-out terminal of the emergency power generation side of dual-power transfer switch is connected by cable with the lead-in circuit breaker cabinet of client's switchgear house, leading-out terminal and the connection of end of incoming cables and switch with knifeshaped fuse, and the end of incoming cables of switch with knifeshaped fuse is connected with outside emergency plant；The end of incoming cables of the civil power side of dual-power transfer switch is connected by voltage signal line with the end of incoming cables of the QF lead-in circuit breakers of the lead-in circuit breaker cabinet, one group of normally closed contact of the switch knob circuit in series access locking relay of lead-in circuit breaker cabinet；Voltmeter is parallel with the emergency power generation side of dual-power transfer switch and the voltage signal line of civil power side.Without finding overlapped points again during use, evade access safety and anti-power transmission risk, and emergency service situation can be monitored in real time, it is simple to operate, it is easy to use, there is quick access, safety interlocking, early warning of sending a telegram here.
Description
Technical field
The utility model is related to a kind of plant-grid connection equipment, more particularly to it is a kind of do not possess external power source access conditions and
Need to provide the outside emergency power supply access device in the place of outside emergency power supply.
Background technology
In powered operation is protected, special power demands and interim important guarantor power supply client and place, these clients be present
With place in it is built by electrical engineering, provide emergency plant for oneself without synchronous configuration, be difficult in commercial power interruption and in short-term extensive
, it is necessary to which outside emergency plant provides support, due to not matching somebody with somebody in the switchgear house in these clients and place in the case of multiple power transmission
Outside emergency power supply interface arrangement is put, is caused when outside emergency plant accesses, overlap joint point selection difficulty, overlap joint consumption be present
The problems such as duration, unreliable closedown mode；In addition, during actual emergency service, due to not over external power interface
Device accesses, and the potential safety hazards such as the maloperation of field personnel, anti-power transmission also be present.
Utility model content
Technical problem to be solved in the utility model is to overcome defect described above, there is provided a kind of outside emergency power supply
Access device, outside emergency plant can be quickly accessed in the case where not having a power failure, be ensured so as to provide Emergency electricity.
In order to solve the problems, such as techniques described above, outside emergency power supply access device described in the utility model, including double electricity
Source changeover switch, switch with knifeshaped fuse and locking relay；The leading-out terminal of the emergency power generation side of the dual-power transfer switch passes through electricity
Cable is connected with the lead-in circuit breaker cabinet of client's switchgear house, and end of incoming cables and the knife of the emergency power generation side of dual-power transfer switch melt
The leading-out terminal of switch and connection, the end of incoming cables of switch with knifeshaped fuse are connected with outside emergency plant；The dual-power transfer switch
The end of incoming cables of civil power side be connected by voltage signal line with the end of incoming cables of the QF lead-in circuit breakers of the lead-in circuit breaker cabinet, institute
State one group of normally closed contact of the switch knob circuit in series access locking relay of lead-in circuit breaker cabinet；The dual power supply conversion is opened
Voltmeter is parallel with the emergency power generation side of pass and the voltage signal line of civil power side.
Further, warning device and powered is parallel with dual-power transfer switch civil power side end of incoming cables described in the utility model
Indicator lamp.
Preferably, it is in series with time switch on the circuit of warning device described in the utility model.
The utility model be for do not possess external power source access conditions and needing the place of outside emergency power supply is provided and
A kind of interface arrangement of design, by the utility model by the lead-in circuit breaker in outside emergency plant and place in need
Cabinet is connected, and the utility model is forever positioned in client's switchgear house after installing, and the overlapped points of outside emergency plant are moved
, it is necessary to when outside emergency plant accesses in advance on to the switch with knifeshaped fuse of the access device, outside emergency plant can
The end of incoming cables of switch with knifeshaped fuse described in the utility model is snapped under client's live state；During emergency service, the utility model
The electric blocking function that the locking relay and dual-power transfer switch are realized can prevent civil power to outside emergency plant
Anti- power transmission, fast and safely access system is formed, solve to protect in power supply process all the time, accessed in outside emergency plant
Every technology, efficiency and safety problem in the presence of link.
The beneficial effects of the utility model：Client's switchgear house is retained in after the utility model installation, rear continuation of insurance power supply
Work directly overlaps emergency plant to the utility model, without finding overlapped points again, reduce overlap joint workload and
Material, access security risk and anti-power transmission risk are evaded, while every situation during emergency service can be monitored in real time；This
Utility model is simple to operate, easy to use, has the advantages that quick access, safety interlocking, incoming call early warning, can reduce guarantor and power
Artificial and material cost in journey.
Brief description of the drawings
Fig. 1 is primary connection figure of the present utility model；
Fig. 2 is secondary connection diagram of the present utility model；
Fig. 3 is the inner member figure of outside emergency power supply access device described in the utility model；
Fig. 4 is the outer member figure of outside emergency power supply access device described in the utility model.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
Outside emergency power supply access device described in the utility model, including dual-power transfer switch 1, switch with knifeshaped fuse 2 and close
Lock relay 3；The leading-out terminal of the emergency power generation side of the dual-power transfer switch 1 is broken by the inlet wire of cable and client's switchgear house
Road device cabinet 9 connects, and the leading-out terminal of the end of incoming cables of the emergency power generation side of dual-power transfer switch 1 and the switch with knifeshaped fuse 2 and is connected,
The end of incoming cables of switch with knifeshaped fuse 2 is connected with outside emergency plant；The end of incoming cables of the civil power side of the dual-power transfer switch 1 leads to
Overvoltage signal line is connected with the end of incoming cables of the QF lead-in circuit breakers of the lead-in circuit breaker cabinet 9, the lead-in circuit breaker cabinet 9
Switch knob circuit in series accesses one group of normally closed contact of locking relay 3；The emergency power generation side of the dual-power transfer switch 1
Voltmeter 4 is parallel with the voltage signal line of civil power side.
Further, warning device 5 and band are parallel with the civil power side end of incoming cables of dual-power transfer switch 1 described in the utility model
Electric indicator lamp 6.
Preferably, be in series with time switch 7 on the circuit of warning device 5 described in the utility model.
Embodiment：
Dual-power transfer switch 1 described in the utility model is made up of two breakers and controller, dual-power transfer switch
Side is civil power side, and opposite side is emergency power generation side, controls breaker division by controller, and carry interlock function, it is ensured that
Only side can close a floodgate.One group of cable is introduced from the lower end of the emergency power generation side of dual-power transfer switch 1 of the present utility model to connect
Enter the 0.4kV lead-in circuit breakers cabinet 9 of client's switchgear house；The upper end of switch with knifeshaped fuse 2 is connected with outside emergency plant, lower end with it is double
The upper end connection of the emergency power generation side of transfer switch 1；The civil power side upper end of dual-power transfer switch 1 is by client's switchgear house
The switch knob circuit in series of 0.4kV lead-in circuit breakers cabinet 9 accesses one group of locking relay normally closed contact（Entering in reference picture 2
Line cabinet closing circuit and auxiliary contact loop feature）, power taking pressure signal wire access, the signal wire is derived from client's 0.4kV inlet wires and breaks
Road device cabinet QF lead-in circuit breakers end of incoming cables, and the normally opened auxiliary contact for one group of QF lead-in circuit breaker of connecting is followed by dual power supply changing
The civil power side end of incoming cables of switch 1, purpose are collection mains voltage signal, i.e. QF can just adopt voltage signal, QF separating brakes when closing a floodgate
When contact be in off state, switch knob is located on the panel of 0.4kV lead-in circuit breakers cabinet 9 of client's switchgear house, for grasping
Make QF lead-in circuit breakers combined floodgate, monitor city's electricity condition and dual-power transfer switch switches to the signal designation of civil power side；Concatenating
After entering locking relay normally closed contact, if emergency plant is powered, i.e., when emergency plant is powered, QF lead-in circuit breakers without
Method is closed a floodgate, and realizes electric blocking.Two voltmeters 4 of installation on the panel of the cabinet 8 of outside emergency power supply access device, two
Voltmeter is coupled to the civil power side end of incoming cables and emergency power generation side end of incoming cables of double power supply converting switch 1 respectively, for monitoring city
Electric side and emergency power generation side voltage status.
Dual-power transfer switch has reliable dual interlock protection feature, using mechanical interlocking and the dual guarantor of electric interlock
Shield, prevents two-way power supply to be also turned on, and prevents because of fault, and automatic conversion, this practicality occurs when circuit breaker tripping
In new, dual-power transfer switch is used to prevent civil power to be also turned on emergency generator, and realizes that civil power is met an urgent need with outside
Automatic conversion between generating equipment duplex feeding.
Before civil power does not have a power failure, voltage signal is adopted in the civil power side of dual-power transfer switch 1, and dual-power transfer switch 1 is answered
Anxious Generation Side is in off state.Need outside emergency plant to disconnect the switch with knifeshaped fuse 2 in the present apparatus when powering, and access
Emergency plant, if mains failure, first the QF breakers in client's switchgear house disconnection 0.4kV lead-in circuit breakers cabinet 8, knife melt and opened
Close 2 and all low-pressure line-outgoing loads（It is to ensure the power supply in the important loop of client's switchgear house to consider outside emergency plant, is supplied
Need the important loop of selected section to close a floodgate when electric, if not turning off other low-pressure line-outgoing loads, outside emergency plant may be caused
Overload）.Access point of the switch with knifeshaped fuse 2 as emergency generator, there is the characteristic of obvious cut-off point using it, ensure spliced cables
When personal security.Switch with knifeshaped fuse 2 is closed, starts emergency plant, dual-power transfer switch 1 is automatically converted to outside emergent
Generating equipment is powered, and closes the low-pressure line-outgoing load loop that need to be powered；It is approved can recover mains-supplied after, first stop outside
Emergency plant, and switch with knifeshaped fuse 2 is disconnected, close the QA disconnecting links in 0.4kV lead-in circuit breaker cabinets and the open circuit of QF inlet wires
Device, then city power recovery；If during civil power is recovered, outside emergency plant does not stop, because of locking relay 3（I.e. KM is closed
Relay is locked, shown in Fig. 2 control loops）Locking, the contact that QF breaker closing buttons are connected are in off state, such as pressed
0.4kV lead-in circuit breaker switch knobs, breaker can not still be closed a floodgate, and behaviour is performed again after need to outside emergency plant be had a power failure
Make, effectively prevent civil power to the anti-power transmission of outside emergency plant.
The utility model is provided with powered indicator lamp 6 and warning device 5, if city power recovery, powered indicator lamp 6 is bright, alarm dress
Put 5 and send phonetic warning, decide whether recovery mains-supplied according to actual conditions by field personnel；Now because of QF inlet wires
Breaker is off still in gate-dividing state, i.e. QF auxiliary contact, is still powered by outside emergency plant,
Dual-power transfer switch, ensure that outside emergency plant loop does not power off；Time control is in series with the circuit of the warning device
Switch, for controlling start-stop and the working time of warning device, during city power recovery, time switch connects warning device early warning, and
Pre-warning time can be adjusted according to field condition, by predetermined time connection or disjunction circuit.
Claims (3)
1. outside emergency power supply access device, it is characterised in that the access device includes dual-power transfer switch（1）, knife melts
Switch（2）And locking relay（3）；The dual-power transfer switch（1）Emergency power generation side leading-out terminal pass through cable with visitor
The lead-in circuit breaker cabinet of family switchgear house（9）Connection, dual-power transfer switch（1）The end of incoming cables of emergency power generation side melted with the knife
Switch（2）Leading-out terminal and connection, switch with knifeshaped fuse（2）End of incoming cables be connected with outside emergency plant；The dual power supply turns
Change switch（1）The end of incoming cables of civil power side pass through voltage signal line and the lead-in circuit breaker cabinet（9）QF lead-in circuit breakers
End of incoming cables connects, the lead-in circuit breaker cabinet（9）Switch knob circuit in series access locking relay（3）One group normally closed connect
Point；The dual-power transfer switch（1）Emergency power generation side and civil power side voltage signal line on be parallel with voltmeter（4）.
2. outside emergency power supply access device according to claim 1, it is characterised in that the dual-power transfer switch（1）
Civil power side is parallel with warning device on end of incoming cables（5）With powered indicator lamp（6）.
3. outside emergency power supply access device according to claim 2, it is characterised in that the warning device（5）Circuit
On be in series with time switch（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720507953.6U CN206790208U (en) | 2017-05-09 | 2017-05-09 | Outside emergency power supply access device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720507953.6U CN206790208U (en) | 2017-05-09 | 2017-05-09 | Outside emergency power supply access device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206790208U true CN206790208U (en) | 2017-12-22 |
Family
ID=60710242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720507953.6U Active CN206790208U (en) | 2017-05-09 | 2017-05-09 | Outside emergency power supply access device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206790208U (en) |
-
2017
- 2017-05-09 CN CN201720507953.6U patent/CN206790208U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |