CN207782480U - Dc switch networking protective device in a kind of subway DC power-supply system - Google Patents
Dc switch networking protective device in a kind of subway DC power-supply system Download PDFInfo
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- CN207782480U CN207782480U CN201721501433.0U CN201721501433U CN207782480U CN 207782480 U CN207782480 U CN 207782480U CN 201721501433 U CN201721501433 U CN 201721501433U CN 207782480 U CN207782480 U CN 207782480U
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Abstract
The utility model discloses a kind of networkings of subway DC power-supply system dc switch to protect system; the interface mode communicated using fiber optic network; substitute the interface mode of original switching value comprising station level network interface, wall network interface, process layer acquisition interface；Station level network interface connects monitoring backstage by optical fiber; device passes through station level network interface transfers MMS messages; wall network interface is used for connecting all dc switch networking protective devices in direct-current switch cabinet; device passes through wall network interface transfers GOOSE message; process layer acquisition interface is used for connecting voltage transformer, current transformer and status switch, and process layer acquisition interface is responsible for collection voltages value, current value and dc switch position signal.When occurring short circuit and overload fault in DC power-supply system, shunt tripping and status signal will quickly be transmitted by wall network interface, realize the shunt tripping of dc switch, it is therefore prevented that fault coverage expands and the input of extension wire.
Description
Technical field
The utility model is related to a kind of networkings of dc switch to protect system, more particularly, to a kind of subway direct current supply
Dc switch networking protective device in system.
Background technology
In subway DC power-supply system, subway line is respectively stood and rolling stock section of electric substation be each equipped with direct current 1500V or
750V electricity room, is equipped with direct-current switch cabinet in direct current room, and direct-current switch cabinet is DC power-supply system mainly for power distribution equipment, directly
The action of stream switch is realized by dc circuit breaker.When emerged in operation short circuit and overload, dc circuit breaker can quickly disjunction event
Hinder electric current, major function is that circuit is had in protection by oneself.
However, subway DC power-supply system is not system isolated merely, from system structure, subway direct current supplies
Electric system includes the above feeder line of two-way inlet wire and 4 tunnels, and inlet wire is by exchanging 35kV after transformer pressure-reducing, using Rectification Power Factor
Rectification, the contact net that the above feeder line in 4 tunnels then supplies subway line are used for train operation.In this whole process, have more
Electric energy is converted and power supply and distribution link is acted and protected.From the point of view of system operation, subway DC power-supply system need to
Intensive train operation provides power source on subway line, and load current generally reaches kilo-ampere on hundreds of.Therefore, direct current supply system
System will pass through the test of reliability and permanent big load.Subway DC power-supply system is can be seen that in terms of two above not only
When ensureing that short circuit and overload fault occur for the proximal end, middle part and distal end of entire supply line, dc circuit breaker can trip rapidly,
Reach line non-loss；The links linkage shunt tripping that also ensure power supply system, to prevent fault coverage from expanding and continue；
Also, for every state parameter, failure alarm signal and the system operation control in subway DC power-supply system operational process
The logical process of system needs reflection promptly and accurately to monitoring backstage.Therefore, in subway DC power-supply system, if can will more than
Three functions effectively combine, so that it may more comprehensively, quickly protect and monitor to realize.
Currently, in subway DC power-supply system, the protection of dc switch is believed using multi-core controlled cable transmitting switch amount
Number form realize.Although which application is ripe, the shunt tripping of chief, protection, the transmission of block signal can be realized.But
Multicore cable connects up complicated in cabinet, and electric signal is easy to be interfered, and there may be wrong lines during later maintenance
After the transmission of multiple links, time delay is long for risk and hard signal, for protecting the promptness of system to be difficult to meet
It is required that.In order to solve these problems, it needs to propose a kind of more advanced reliable technological means.
Utility model content
Technical problem to be solved in the utility model is just to provide dc switch net in a kind of subway DC power-supply system
Network protective device uses optical fiber for communication media, and using multi-level network structure, wiring is simple in cabinet, and signal is not easy
It is interfered, lowers wrong line risk during later maintenance significantly and system response time is short, protection system can be met
Promptness requirement.
Above-mentioned technical problem is solved, the technical solution adopted in the utility model is as follows：
Dc switch networking protective device in a kind of subway DC power-supply system, in the subway DC power-supply system
Equipped with direct current room 2 and monitoring room 1, direct-current switch cabinet 5 is equipped in direct current room, it is straight to be equipped with first to the 6th in direct-current switch cabinet
Breaker 61-66 is flowed, dc circuit breaker is responsible for the short circuit of own circuit and the tripping of overload fault, is additionally provided in direct-current switch cabinet
Positive electrode bus 12, positive electrode bus are connected for direct current inlet wire with the confluence of direct feeder line；It is characterized in that：The net of the dc switch
Networkization protection system include：
Be located at the monitoring room 1 the first optical fiber switch 81 and its monitoring host computer being separately connected 3 and operation employee
Make station 4；
It is located at the Three Tiered Network Architecture-station level 9, wall 10 and process layer 11 in the direct current room 2：
The station level 9 include station level optical fiber and first to the 6th totally six similarly have the ports I/O, first
The dc switch networking protective device (71-76) of optical port and the second optical port, station level optical fiber one end connection first light
Fine interchanger 81, the other end are separately connected the first optical port of each dc switch networking protective device；
The wall 10 include wall optical fiber and the second optical fiber switch 82, wall optical fiber one end connection described in
The second optical port of each dc switch networking protective device, the other end connect the second optical fiber switch；
The process layer includes positive electrode bus 12, the first disconnecting switch 211, the first rectifier R1, the second disconnecting switch
212, third disconnecting switch 221, the second rectifier R2 and the 4th disconnecting switch 222 and first to the 6th dc circuit breaker 61-
66；One end of first to the 6th dc circuit breaker is separately connected positive electrode bus, the other end, and to be then respectively correspondingly connected to left line small
The second of the first disconnecting switch 211 of mileage feeder line F1, the big mileage feeder line F3 of the first rectifier R1, left line of the first inlet wire F2
The third disconnecting switch 221 of the small mileage feeder line F4 of disconnecting switch 212, right line, the second rectifier R2 of the second inlet wire F5 and right line
The 4th disconnecting switch 222 of big mileage feeder line F6, the acquisition control end of the first to the 6th dc circuit breaker is then connected respectively to respectively
The ports I/O of dc switch networking protective device；.
The station level and interval layer network is star-shaped network structure, carries out networking by optical fiber switch, communication is situated between
Matter is optical fiber, and wall is GOOSE network.
The composed structure of the dc switch networking protective device is：Current acquisition signal is defeated through DC current successively
Enter the first ADC acquisitions port of input chip STM32F4 after module, Signal-regulated kinase and A/D conversion circuits, voltage acquisition
Signal inputs the second of chip STM32F4 after DC voltage input module, Signal-regulated kinase and A/D conversion circuits successively
ADC acquires port, and chip STM32F4 is also connected with each other with fiber optic network by ethernet module and photoelectric conversion module, is passed through
Switch value input interface input switch state exports alarm control signal by output switch parameter interface.
The chip STM32F4 is also circumscribed with power circuit, watchdog circuit, keyboard indicator, LCD MODULE
And memory.
The monitoring room of the utility model is equipped with monitoring backstage, including monitoring host computer and operator workstation；Dc switch net
Network protective device carries out information exchange with monitoring host computer by station level network, uploads real time data information；Monitoring host computer will
The data of upload constantly refresh real-time data base, and data are stored in historical data base by timing.Operator workstation is arranged in not
Same working space is monitored and accesses to system.Station level network use star-shaped network structure, by optical fiber switch into
Row networking, communication media are optical fiber.Dc switch networking protective device passes through 61850 communication protocols of station level network transmission IEC
The MMS messages of view.The real time data information and logical process information of device are loaded in MMS messages.
Dc switch networking protective device is installed in direct-current switch cabinet, each dc circuit breaker configuration one in cabinet
Platform dc switch networking protective device is protected, and the interval layer network of all DC traction protection supervisory equipments between cabinet connects
Mouth carries out star network connection by optical fiber switch by communication media of optical fiber, sets up the GOOSE network of layer at interval.Interval
What layer network transmitted is the GOOSE messages of 61850 communication protocols of IEC, and dc switch networking protective device passes through GOOSE nets
Network transmits state, action command and the shunt tripping information of DC traction protection supervisory equipment.
DC traction protection supervisory equipment is equipped with I/O interfaces, voltage transformer, the Current Mutual Inductance of I/O interfaces and process layer
Device and status switch are attached, and are responsible for collection voltages value, current value and dc switch position signal.
Operation principle：
Direct current inlet wire accesses two-way inlet wire by two sets of independent rectifiers, and DC feeder includes that the left and right of subway line is big
4 roads supply contact net to small mileage in total, every that electric isolating switch is equipped between road feeder line and contact net.From the foregoing, it will be observed that subway is straight
The inlet wire and feeder line for flowing power supply system are multichannel standby configurations each other, when certain short circuit and overload fault occurs all the way, to prevent
Fault coverage expands and the input of extension wire, DC traction protection supervisory equipment can shunt tripping and status signal pass through optical network
Network is quickly transmitted, and realizes the shunt tripping of dc switch, to reliably and effectively be protected to the realization of direct-furnish electric system.Meanwhile directly
Stream traction protection measure and control device passes the real time status information of dc switch and logical action procedural information by upper level network
It passs monitoring backstage and carries out alarm indication and storage.
Advantageous effect：The utility model can realize that dc switch networking is protected in subway DC power-supply system, using light
The interface mode of fine network communication substitutes the interface mode of original switching value, to realize to dc switch more comprehensively, quickly
Protection and monitoring.When occurring short circuit in subway DC power-supply system and when overload fault, shunt tripping and status signal will by
The fiber optic network of interlayer is quickly transmitted, realize the shunt tripping of dc switch, it is therefore prevented that fault coverage expands and extension wire
Input reliably and effectively protects direct-furnish electric system to realize.The real time status information and logical action of dc switch simultaneously
Procedural information passes to monitoring backstage by the fiber optic network of station level and carries out alarm indication and storage.
The interface mode communicated using fiber optic network, substitutes the interface mode of original switching value, is opened direct current to realize
It closes and more comprehensively, quickly protects and monitor.
Description of the drawings
Fig. 1 is the principles of the present invention schematic diagram；
Fig. 2 is the schematic diagram of the utility model embodiment.
Reference numeral refers in figure：1- monitoring rooms, 2- direct currents room, 3- monitoring host computers, 4- operator workstations, 5- direct currents
Switchgear, the first to the 6th dc circuit breakers of 61~66-, the first to the 6th DC traction protection supervisory equipments of 71~76-, 81-
First optical fiber switch, the second optical fiber switch of 82-, 9- station levels, 10- walls, 11- process layers, 12- positive electrode bus.
Specific implementation mode
Referring to Fig. 1 and Fig. 2, dc switch networking protective device is implemented in the subway DC power-supply system of the utility model
Example.
It is equipped with direct current room 2 and monitoring room 1 in subway DC power-supply system, is equipped with direct-current switch cabinet 5 in direct current room, directly
It is interior equipped with the first to the 6th dc circuit breaker 61-66 to flow switchgear, dc circuit breaker is responsible for having the short circuit of circuit and overload event by oneself
The tripping of barrier, positive electrode bus 12 is additionally provided in direct-current switch cabinet, and positive electrode bus connects for the confluence of direct current inlet wire and direct feeder line
It connects.
Dc switch networking protection system include：It is located at the first optical fiber switch 81, the Yi Jiqi of the monitoring room 1
The monitoring host computer 3 and operator workstation 4 being separately connected；It is located at Three Tiered Network Architecture-station level 9, the wall in direct current room 2
10 and process layer 11：Station level 9 include station level optical fiber and first to the 6th totally six similarly have the ports I/O, first
The dc switch networking protective device (71-76) of optical port and the second optical port, station level optical fiber one end connect the first optical fiber and exchange
Machine 81, the other end are separately connected the first optical port of each dc switch networking protective device；Wall 10 includes wall optical fiber
And second optical fiber switch 82, wall optical fiber one end connect the second optical port, another of each dc switch networking protective device
The second optical fiber switch of end connection；Process layer 11 includes positive electrode bus 12, the first disconnecting switch 211, the first rectifier R1, the
Two disconnecting switch 212, third disconnecting switch 221, the second rectifier R2 and the 4th disconnecting switch 222 and first are to the 6th straight
Flow breaker 61-66；One end of first to the 6th dc circuit breaker is separately connected positive electrode bus, the other end and then respectively correspondingly connects
It is connected to the first disconnecting switch 211 of the small mileage feeder line F1 of left line, the big mileage feeder line of the first rectifier R1, left line of the first inlet wire F2
The third disconnecting switch 221 of the small mileage feeder line F4 of the second disconnecting switch 212 of F3, right line, the second rectifier of the second inlet wire F5
The 4th disconnecting switch 222 of R2 and the big mileage feeder line F6 of right line, the control terminal of the first to the 6th dc circuit breaker are then separately connected
To the ports I/O of each dc switch networking protective device.
Station level and interval layer network are star-shaped network structure, carry out networking by optical fiber switch, communication media is light
Fibre, station level are MMS networks, and wall is GOOSE network；The composed structure of dc switch networking protective device is：Electric current
It acquires signal and inputs chip STM32F4's after DC current input module, Signal-regulated kinase and A/D conversion circuits successively
First ADC acquires port, and voltage acquisition signal is successively through DC voltage input module, Signal-regulated kinase and A/D conversion circuits
The 2nd ADC of input chip STM32F4 acquires port afterwards, and chip STM32F4 also passes through ethernet module and photoelectric conversion module
It is connected with each other with fiber optic network, exports alarm by switch value input interface input switch state, by output switch parameter interface
Control signal.
Chip STM32F4 is also circumscribed with power circuit, watchdog circuit, keyboard indicator, LCD MODULE and storage
Device.
Claims (4)
1. dc switch networking protective device in a kind of subway DC power-supply system, set in the subway DC power-supply system
There are a direct current room (2) and monitoring room (1), direct-current switch cabinet (5) is equipped in direct current room, first to the is equipped in direct-current switch cabinet
Six dc circuit breakers (61-66), dc circuit breaker are responsible for the short circuit of own circuit and the tripping of overload fault, in direct-current switch cabinet
It is additionally provided with positive electrode bus (12), positive electrode bus is connected for direct current inlet wire with the confluence of direct feeder line；It is characterized in that：The direct current
Switch networking protection system include：
It is located at the first optical fiber switch (81) and its monitoring host computer being separately connected (3) and the operator of the monitoring room (1)
Work station (4)；
It is located at the Three Tiered Network Architecture-station level (9), wall (10) and process layer (11) of the direct current room (2)：
The station level (9) include station level optical fiber and first to the 6th totally six similarly have the ports I/O, the first light
The dc switch networking protective device (71-76) of mouth and the second optical port, station level optical fiber one end connection first optical fiber
Interchanger (81), the other end are separately connected the first optical port of each dc switch networking protective device；
The wall (10) includes wall optical fiber and the second optical fiber switch (82), described in the connection of wall optical fiber one end
The second optical port of each dc switch networking protective device, the other end connect the second optical fiber switch；
The process layer (11) include positive electrode bus (12), the first disconnecting switch (211), the first rectifier (R1), second every
Leave pass (212), third disconnecting switch (221), the second rectifier (R2) and the 4th disconnecting switch (222) and first to the 6th
Dc circuit breaker (61-66)；One end of first to the 6th dc circuit breaker is separately connected positive electrode bus, the other end and then corresponds to respectively
Ground is connected to the first disconnecting switch (211) of the small mileage feeder line (F1) of left line, the first rectifier (R1) of the first inlet wire (F2), a left side
The second disconnecting switch (212) of the big mileage feeder line (F3) of line, the third disconnecting switch (221) of the small mileage feeder line (F4) of right line,
4th disconnecting switch (222) of the second rectifier (R2) of two inlet wires (F5) and the big mileage feeder line (F6) of right line, first to the 6th
The acquisition control end of dc circuit breaker is then connected respectively to the ports I/O of each dc switch networking protective device.
2. dc switch networking protective device in subway DC power-supply system according to claim 1, it is characterized in that：Institute
The station level and interval layer network stated are star-shaped network structure, carry out networking by optical fiber switch, communication media is optical fiber, is stood
Control layer is MMS networks, and wall is GOOSE network.
3. dc switch networking protective device, feature in subway DC power-supply system according to claim 1 or 2
It is：The composed structure of the dc switch networking protective device is：Current acquisition signal inputs mould through DC current successively
The first ADC that chip STM32F4 is inputted after block, Signal-regulated kinase and A/D conversion circuits acquires port, voltage acquisition signal according to
Secondary the 2nd ADC acquisitions that chip STM32F4 is inputted after DC voltage input module, Signal-regulated kinase and A/D conversion circuits
Port, chip STM32F4 are also connected with each other with fiber optic network by ethernet module and photoelectric conversion module, are defeated by switching value
Incoming interface input switch state exports alarm control signal by output switch parameter interface.
4. dc switch networking protective device in subway DC power-supply system according to claim 3, it is characterized in that：Institute
The chip STM32F4 stated is also circumscribed with power circuit, watchdog circuit, keyboard indicator, LCD MODULE and memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721501433.0U CN207782480U (en) | 2017-11-09 | 2017-11-09 | Dc switch networking protective device in a kind of subway DC power-supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721501433.0U CN207782480U (en) | 2017-11-09 | 2017-11-09 | Dc switch networking protective device in a kind of subway DC power-supply system |
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| Publication Number | Publication Date |
|---|---|
| CN207782480U true CN207782480U (en) | 2018-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721501433.0U Active CN207782480U (en) | 2017-11-09 | 2017-11-09 | Dc switch networking protective device in a kind of subway DC power-supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113162234A (en) * | 2021-04-09 | 2021-07-23 | 中铁第四勘察设计院集团有限公司 | Direct current combined-hop system based on GOOSE communication and monitoring method |
| CN113937805A (en) * | 2020-07-14 | 2022-01-14 | 南京南瑞继保工程技术有限公司 | Subway brake regenerative electric energy feedback joint debugging control method and system based on GOOSE communication |
-
2017
- 2017-11-09 CN CN201721501433.0U patent/CN207782480U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113937805A (en) * | 2020-07-14 | 2022-01-14 | 南京南瑞继保工程技术有限公司 | Subway brake regenerative electric energy feedback joint debugging control method and system based on GOOSE communication |
| CN113162234A (en) * | 2021-04-09 | 2021-07-23 | 中铁第四勘察设计院集团有限公司 | Direct current combined-hop system based on GOOSE communication and monitoring method |
| CN113162234B (en) * | 2021-04-09 | 2022-06-07 | 中铁第四勘察设计院集团有限公司 | Direct current combined-hop system based on GOOSE communication and monitoring method |
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