CN206850427U - A kind of track traffic loop wire middle-voltage network electric power system - Google Patents
A kind of track traffic loop wire middle-voltage network electric power system Download PDFInfo
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- CN206850427U CN206850427U CN201720758043.5U CN201720758043U CN206850427U CN 206850427 U CN206850427 U CN 206850427U CN 201720758043 U CN201720758043 U CN 201720758043U CN 206850427 U CN206850427 U CN 206850427U
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Abstract
It the utility model is related to track traffic middle-voltage network electric power system, provide a kind of track traffic loop wire middle-voltage network electric power system, the multiple power supply zones being distributed including multiple main transformer stations and along loop wire, each power supply zone includes the multiple electric substations being sequentially distributed along the loop wire, the electric substation that each power supply zone is accessed in two telegram in reply source to subregions at a main transformer station, multiple electric substations are sequentially connected in series by the first class interval cable and the second class interval cable in each power supply zone, pass through looped network cable connection between the Liang Ge electric substations positioned at end of two adjacent power supply zones, looped network cable is provided with looped network block switch.Track traffic loop wire middle-voltage network electric power system provided by the utility model, using loop wire feature, wiring is simpler on the premise of security reliability is met, secondary circuit is less, and engineering exploitativeness is strong, operation management is more convenient.
Description
Technical field
It the utility model is related to track traffic middle-voltage network electric power system, more particularly to a kind of middle pressure of track traffic loop wire
Network power supply system.
Background technology
The middle-voltage network electric power system for the Circle Line of Urban Rail Transit circuit that the country is built in recent years has continued line style circuit
Connection plan, employ bicyclic web frame, open loop operation mode.Completely several power supply zones are set, each subregion is from outer
Power supply or main transformer station introduce two telegram in reply sources to first electric substation, two sections of buses of subregion, and electric substation is using double back electricity in subregion
Cable connection；Electric substation uses single-trunk segmental wiring, if bar coupler, and setting is standby at bar coupler
Power switchover function；Ability is supported to provide failure, link cable and looped network are set in the subregion afterbody between power supply point
Block switch.During normal operation, looped network block switch is opened, and when a power loss, bar coupler is closed, by another
Power supply is supported in telegram in reply source；At one during external power (twice) dead electricity, looped network block switch is closed, is propped up by another external power
Help power supply.The connection plan, which is directed to the circuit of " line style " through city in city, has stronger advantage, that is, is meeting circuit both ends
Power supply zone " should there be two independent current sources in each electric substation " while, turn avoid roundabout power supply.But do not tie
Cyclization line feature carries out targeted design, and electric substation's wiring and the method for operation are more complicated, engineering construction, operation management inconvenience, and
Economic index is poor.
It is therefore desirable to design a kind of track traffic loop wire middle-voltage network electric power system, to overcome above mentioned problem.
Utility model content
The purpose of this utility model is the defect for overcoming prior art, there is provided a kind of track traffic loop wire middle-voltage network
Electric power system, targeted design is carried out the characteristics of for loop wire, to cause middle-voltage network electric power system meeting security reliability
On the premise of wiring is simpler, secondary circuit is less, and in economy, engineering exploitativeness, operation management convenience, operation side
Method simplicity etc. is significantly better than that existing scheme.
What the utility model was realized in：
The utility model provides a kind of track traffic loop wire middle-voltage network electric power system, including multiple main transformer stations and edge
Multiple power supply zones of loop wire distribution, each power supply zone include the multiple electric substations being sequentially distributed along the loop wire, often
The electric substation that one power supply zone is accessed in two telegram in reply source to subregions at a main transformer station, each electric substation Jun Bao
Two sections of buses are included, two sections of buses are respectively the first bus and the second bus, and each section of bus is respectively provided with one back into line and one time
Outlet, it is sequentially connected in series between the first bus of multiple electric substations by the first class interval cable in each power supply zone, often
It is sequentially connected in series in one power supply zone between the second bus of multiple electric substations by the second class interval cable, each power supply
End electric substation carried out by the power transformation positioned at end of subregion, pass through two winding net cables between adjacent Liang Ge ends electric substation and connect
Connect, looped network block switch is equipped with each looped network cable.
Further, it is respectively provided with earthed switch on every section of bus.
Further, each power supply zone accesses two telegrams in reply by two main transformers at a main transformer station
Source, connected by mother block switch between two main transformers.
Further, it is respectively provided with a safe automatic bus at each looped network block switch.
Further, the safe automatic bus includes prepared auto restart logic circuit and stand-by power supply, and the prepared auto restart is patrolled
Collecting circuit includes two inputs and door, three inputs and door, two input OR gates, the first NOT gate, the second NOT gate and relay, the end
Any bus of electric substation of portion is end bus, and the looped network block switch being connected with end bus is end looped network block switch,
The outlet of the inlet wire and end bus of end bus is all connected with the input of two input OR gates；The inlet wire of end bus and end are female
Line is all connected with the input of two inputs and door；Two inputs are connected the first NOT gate with the output end of door, and bus connection second in end is non-
Door；Output end, the output end of the first NOT gate, the output end of the second NOT gate of two input OR gates are all connected with three inputs and the input of door
End；Three inputs are connected relay with the output end of door, and the relay connects end looped network block switch, the end looped network point
Duan Kaiguan connection stand-by power supplies.
The utility model has the advantages that：
1st, the wiring of middle-voltage network and electric substation is simpler on the premise of security reliability is met, latching logic is simplified,
Secondary circuit is less, and the method for operation of whole electric power system is also simpler.
2nd, the optimizing of connection plan, simplify the equipment of electric substation reduced, therefore construction cost, operation cost and maintenance
Cost reduces.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of middle pressure network of the middle-voltage network electric power system for track traffic loop wire that the utility model embodiment provides
Network wiring diagram；
Fig. 2 is a kind of electric substation's wiring diagram of the middle-voltage network electric power system of track traffic loop wire of Fig. 1 offer；
Fig. 3 is a kind of matching somebody with somebody for the safe automatic bus of the middle-voltage network electric power system of track traffic loop wire of Fig. 1 offer
Put and photo series；
Fig. 4 is a kind of prepared auto restart logical circuitry of the middle-voltage network electric power system of track traffic loop wire of Fig. 1 offer.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The all other embodiment obtained, belong to the scope of the utility model protection.
Such as Fig. 1-Fig. 2, the utility model embodiment provides a kind of middle-voltage network electric power system of track traffic loop wire, including
Main transformer station S1 and main transformer station S2, whole track traffic loop wire are divided into four power supply zones：First power supply zone Q1, second supply
Electric subregion Q2, the 3rd power supply zone Q3 and the 4th power supply zone Q4, four power supply zones include multiple along track traffic ring
The electric substation SS that line is sequentially distributed.First power supply zone Q1 accesses two telegram in reply sources to the first power transformation in Q1 at main transformer station S1
Institute SS1, the second power supply zone Q2 access two telegram in reply sources to the first electric substation SS2 in Q2, the 3rd power supply at main transformer station S1
It is electric to the first electric substation SS3, the 4th power supply zone Q4 in Q3 from main transformer that subregion Q3 accesses two telegram in reply sources at main transformer station S2
Two telegram in reply sources are accessed at institute S2 to the first electric substation SS4 in Q4.It is female that each electric substation SS includes the first bus M1 and second
Set one to be returned back out back into line JX1 and one on line M2, the first bus M1 and one is set on line CX1, the second bus M2 back into line JX2 and one
Return back out line CX2.Between the first bus M1 of multiple electric substation SS in each power supply zone by the first class interval cable L1 according to
Secondary series connection, gone here and there successively by the second class interval cable L2 between the second bus M2 of the adjacent electric substation SS in each power supply zone
Connection, the first power supply zone Q1 be located at end electric substation SSa and the 4th subregion Q4 be located at the electric substation SSd of end between pass through ring
The HL connections of net cable, the electric substation SSb and the 3rd power supply zone Q3 that the second power supply zone Q2 is located at end are located at the power transformation of end
A looped network block switch HK is provided with by the HL connections of looped network cable, a winding net cable HL between institute SSc.The utility model
The middle-voltage network electric power system for the track traffic loop wire that embodiment is provided is opened all looped network segmentations and opened in normal operation
It is the first power supply zone Q1, the second power supply zone Q2, the 3rd power supply zone Q3, the to close HK, main transformer station S1 and main transformer station S2
Four power supply zone Q4 provide power supply.When dead electricity occurs for any one winding net cable in the first power supply zone Q1, another winding
Net cable still provides a telegram in reply source, the looped network block switch of closure and the dead electricity looped network cable connection by the first main transformer station S1
HK, a telegram in reply source is provided for the looped network cable of the dead electricity by main transformer station S2, i.e., the two winding nets electricity in the first power supply zone Q1
Cable provides a telegram in reply source by the first main transformer station S1 and the second main transformer station S2 respectively.Any one winding in second power supply zone Q2
During net cable dead electricity, same analysis, it will not be repeated here.Track traffic loop wire middle-voltage network power supply system provided by the utility model
System realizes a self-rescue function during winding net cable fault on the premise of electric substation's method of operation is not changed.
The operation method difference with the prior art that the present embodiment provides also resides in, and does not have between two sections of buses of electric substation
Bar coupler is set, when one section of bus dead electricity of an electric substation, no longer supports confession by closing bar coupler
Electricity, but support power supply by closing looped network block switch to realize.Specifically, when any electric substation in the first power supply zone Q1
Any dead electricity back into line when, it is another back into line still by main transformer station S1 provide a telegram in reply source, close the first power supply zone Q1 on
Looped network block switch HK, provide a telegram in reply source by main transformer station S2 for the first power supply zone, i.e., two back into line respectively by difference
Main transformer station provide a telegram in reply source.When any inlet wire dead electricity of any electric substation in other power supply zones, same analysis,
It will not be repeated here.The operation method for the electric power system that the utility model embodiment is provided compared with prior art the advantages of
In the characteristics of fully having used loop wire itself, being changed to the connection plan of track traffic loop wire middle-voltage network electric power system
Enter so that the operation method meets the same of " each electric substation should there are two independent current sources " of first order load prescribed by standard
When, the method for operation is simpler.And the operation method that the present embodiment is provided supplies with existing track traffic loop wire middle-voltage network
The operation method of electric system is compared, and should have the premise in two independent current sources (i.e. two telegram in reply sources) in each electric substation in realization
Under, roundabout power supply is avoided, and the method for operation is easier.Understood with reference to the characteristics of loop wire, the utility model embodiment is fully transported
The characteristics of with loop wire itself, the connection plan of track traffic loop wire middle-voltage network electric power system is improved, meet one
" should there be two independent current sources in each electric substation " of stage load prescribed by standard, and connection plan is simpler, secondary returning
Road is few, latching logic simplifies, and the method for operation is also simpler.Construction and operation cost, each electric substation, which can also be reduced, to be reduced
Disconnecting switch 2, the face of Inflatable cabinet body 2,1 set of microcomputer complex protection device；Every electric substation directly reduces room area about simultaneously
6m2, every about 400,000 yuans of electric substation's cost saving.
Preferably, such as Fig. 2, earthed switch 1 is respectively provided with every section of bus.Earthed switch is advantageous to improve whole power supply
The security of system.
Preferably, as Fig. 1, each power supply zone are introduced twice by two main transformers 2 at main transformer station
Power supply, connected by mother block switch between two main transformers 2.When a main transformer is out of service, mother is closed
Block switch, power supply is provided for two power supply zones in main transformer station's supply district by another main transformer.
Preferably, such as Fig. 3, a safe automatic bus is provided with each looped network block switch HK.With existing skill
Art is compared, and compared with prior art, difference is safe automatic bus only at looped network segmentation to the utility model embodiment
Set, while realizing that safety hauls oneself willingly into function, cost saving.
Preferably, such as Fig. 3-Fig. 4, a safe automatic bus is provided between electric substation 4 and electric substation 5 and a looped network is segmented
HK101 is switched, safe automatic bus includes prepared auto restart logic circuit and stand-by power supply (not shown), and the prepared auto restart is patrolled
Collecting circuit includes two inputs and door, three inputs and door, two input OR gates, the first NOT gate, the second NOT gate and relay, electric substation
5 be end electric substation, and the first bus inlet wire of electric substation 5 and the first bus outlet of electric substation 5 are all connected with two input OR gates
Input；First bus inlet wire of electric substation 5 and the first bus bar side of electric substation 5 are all connected with the input of two inputs and door；
Two inputs are connected the first NOT gate with the output end of door, and the first bus of electric substation 5 connects the second NOT gate；The output of two input OR gates
End, the output end of the first NOT gate, the output end of the second NOT gate are all connected with the input of three inputs and door；Three inputs and the output of door
End connection relay, relay connection looped network block switch HK101, looped network block switch HK101 connection stand-by power supplies.Safety is certainly
In the case that the effect of throwing device is power loss all the way, quick recovery system power supply capacity.When the first bus of electric substation 5
When enter line side decompression or the first bus outgoing line side decompression of electric substation 5, two input OR gate conductings；When the first bus enter line side and
First bus bar side simultaneously without pressure when, two input turned on door；When two input OR gates conductings and two inputs and door locking and the
When one bus does not break down, three inputs turn on door, and prepared auto restart logic circuit starts, relay delayed startup, relay
After delay terminates, looped network block switch HK101 closures, in-put of spare power supply uses.First bus enter line side decompression of electric substation 5
Or the entry condition that the first bus outgoing line side decompression of electric substation 5 is prepared auto restart logic circuit, the first bus enter line side and the
First bus-bar fault of one bus bar side simultaneously without pressure or electric substation 5 is the barring condition of prepared auto restart logic circuit, works as trip bar
Part meets and barring condition when not occurring, and prepared auto restart logic circuit starts.Second bus of electric substation 5 is again provided with for certainly
Device is thrown, principle is identical with the backup auto-activating device set on the first bus, will not be repeated here.The present embodiment also reduces into
This, realizes backup power automatic switching function, each electric substation can reduce breaker 1, cost-effective using looped network block switch.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (5)
1. a kind of track traffic loop wire middle-voltage network electric power system, including multiple main transformer stations and multiple confessions along loop wire distribution
Electric subregion, each power supply zone include the multiple electric substations being sequentially distributed along the loop wire, and each power supply zone is equal
The electric substation accessed at a main transformer station in two telegram in reply source to subregions, it is characterised in that：Each electric substation includes two
Section bus, two sections of buses are respectively the first bus and the second bus, and each section of bus is respectively provided with one and returns back out line back into line and one,
It is sequentially connected in series in each power supply zone between the first bus of multiple electric substations by the first class interval cable, it is each described
It is sequentially connected in series in power supply zone between the second bus of multiple electric substations by the second class interval cable, each power supply zone
End electric substation carried out by power transformation positioned at end, by two winding net cable connections between adjacent Liang Ge ends electric substation, respectively
Looped network block switch is equipped with the looped network cable.
2. track traffic loop wire middle-voltage network electric power system as claimed in claim 1, it is characterised in that：On every section of bus
It is respectively provided with earthed switch.
3. track traffic loop wire middle-voltage network electric power system as claimed in claim 1, it is characterised in that：Each power supply point
Qu Jun accesses two telegram in reply sources by two main transformers at a main transformer station, is opened between two main transformers by mother segmentation
Connection connects.
4. track traffic loop wire middle-voltage network electric power system as claimed in claim 1, it is characterised in that：Each looped network point
A safe automatic bus is provided with Duan Kaiguan.
5. track traffic loop wire middle-voltage network electric power system as claimed in claim 4, it is characterised in that：The safety hauls oneself willingly into dress
Put including prepared auto restart logic circuit and stand-by power supply, the prepared auto restart logic circuit include two inputs and door, three inputs and door,
Two input OR gates, the first NOT gate, the second NOT gate and relay, any bus of the end electric substation is end bus, with
The looped network block switch of end bus connection is end looped network block switch, and the outlet of the inlet wire and end bus of end bus is equal
The input of the input OR gate of connection two；The inlet wire and end bus of end bus are all connected with the input of two inputs and door；Two is defeated
Enter and the first NOT gate is connected with the output end of door, end bus connects the second NOT gate；Two input output ends of OR gates, the first NOT gate
Output end, the output end of the second NOT gate are all connected with the input of three inputs and door；Three inputs are connected relay with the output end of door,
The relay connects end looped network block switch, and the end looped network block switch connects stand-by power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720758043.5U CN206850427U (en) | 2017-06-27 | 2017-06-27 | A kind of track traffic loop wire middle-voltage network electric power system |
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|---|---|---|---|
| CN201720758043.5U CN206850427U (en) | 2017-06-27 | 2017-06-27 | A kind of track traffic loop wire middle-voltage network electric power system |
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| CN206850427U true CN206850427U (en) | 2018-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112350309A (en) * | 2020-10-29 | 2021-02-09 | 中铁第四勘察设计院集团有限公司 | Self-healing power supply system for urban rail transit |
-
2017
- 2017-06-27 CN CN201720758043.5U patent/CN206850427U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112350309A (en) * | 2020-10-29 | 2021-02-09 | 中铁第四勘察设计院集团有限公司 | Self-healing power supply system for urban rail transit |
| CN112350309B (en) * | 2020-10-29 | 2022-06-07 | 中铁第四勘察设计院集团有限公司 | Self-healing power supply system for urban rail transit |
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