CN207588443U - Suitable for the DC protection test control apparatus of rail traffic traction substation - Google Patents
Suitable for the DC protection test control apparatus of rail traffic traction substation Download PDFInfo
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- CN207588443U CN207588443U CN201721668542.1U CN201721668542U CN207588443U CN 207588443 U CN207588443 U CN 207588443U CN 201721668542 U CN201721668542 U CN 201721668542U CN 207588443 U CN207588443 U CN 207588443U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
Abstract
The utility model discloses a kind of DC protection test control apparatus suitable for rail traffic traction substation, it is characterised in that：It includes direct current sampling module, communication module, protection CPU modules, opens into module, outputs module, HMI faceplate module, power module; the direct current acquisition module protection CPU modules, opens module, outputs module, communication module and power module and be integrated in a main chassis; the HMI faceplate module is external to be installed on front panel of switch cabinet, and main chassis is mounted on inside switch cabinet.The rail traffic traction protection measure and control device of the utility model provides protections and the automatic control functions such as the protection separating brake, automatic reclosing, Accelerated trip of rail traffic tractive power supply system needs; and provide the functions such as voltage detecting and load measurement; the designing scheme can meet the protection, measurement, the composite request controlled of orbit traffic direct current tractive power supply system, be a highly practical, fully functional designing scheme.
Description
Technical field
The present invention relates to orbit traffic direct current tractive power supply system fields.The innovation and creation realize rail traffic traction and become
Protection, measurement and the control function of electric institute's DC equipment.
Background technology
Power supply of city railway system is the power producer of urban track traffic operation, is responsible for the supply and transmission of electric energy, is electronic
The required power and lighting electricity consumptions of other buildings such as station, section, rolling stock section, control centre are powered and provided to train traction.
During metro operation, power failure once occurs for electric power system, on the one hand subway transport can be forced to stop, and causes passenger stagnant
It stays, makes troubles to the normal life of people, on the other hand will also cause any property loss, even jeopardize passenger survival safety.
Therefore, the reliability of electric power system, safety are the important guarantees of City Rail Transit System normal operation.Tractive power supply system
Function be that piezoelectricity pressure in exchange is become into direct current 1500V or direct current 750V voltages through step-down rectifier, provide and lead for electric train
Draw power supply.DC traction power-supply system includes direct-current switch cabinet, control and protective device, direct current cables, contact net etc..Wherein protect
Shield and control device are to ensuring that it is very important that the safe and reliable operation of rail traffic has the function of.
The light rail of domestic main cities and the main Introduced From Abroad protection location of the direct current protecting equipment of subway, overseas equipment with
The price difference of domestic equipment is huge, the installation and debugging of great number and repair and maintenance expense is also paid, and application flexibility is poor, it is difficult to root
Equipment is transformed according to on-site actual situations.This technical monopoly not only allows the Development of underground railway of China to pay high generation
Valency, and negative effect is brought in various aspects such as technical support, knowledge innovation, government procurements, metro traction power system is straight
The production domesticization of stream protective device has become inevitable developing direction.Thus develop high reliability, the direct current of high-intelligentization supplies
Electrical protective device has important practical significance, and has a vast market prospect.
Invention content
For problems of the prior art, the invention discloses a kind of DC protection test control apparatus, it is suitable for city
The traction substation of city's track electric power system realizes the protection, measurement and control function of DC equipment.Its technical solution used
For：
A kind of DC protection test control apparatus suitable for rail traffic traction substation, it is characterised in that：It includes direct current
Sampling module, protection CPU modules, is opened into module, outputs module, HMI faceplate module, power module, the direct current communication module
Acquisition module, protection CPU modules are opened into module, output module, communication module and power module and be integrated in a main chassis
Interior, the HMI faceplate module is external to be installed on front panel of switch cabinet, and main chassis is mounted on inside switch cabinet；The communication
Module is connected by Ethernet and RS-485 communication interfaces with the protection CPU modules, and the HMI faceplate module passes through at a high speed
RS232 interface is connected with the protection CPU modules, and the direct current sampling module is opened into module and the protection CPU module phases
Even, the protection CPU modules are connected with the module of outputing, and the power module provides multipath voltage regulation power supply, gives device each mould
Part is powered；
The direct current sampling module provides multiple analog input circuits, is used for defencive function；
The communication module can access electric substation automation system or the dedicated Commissioning Analysis software of access by network,
Convenient for output Debugging message and accident analysis；
The protection CPU modules：Direct current sampled data and intake information are received, realizes the troubleshooting work(of various complexity
Can, high-speed communication is carried out by MODBUS stipulations and HMI faceplate module, various events is made to obtain quick response；And realize protection
Event stores and the communication function with electric substation automation system；
The HMI faceplate module：It is responsible for Data inputing, liquid crystal display, separately pacifies with the main chassis of other modules composition
Dress, HMI faceplate module are communicated by high speed RS232 interface with main chassis；
It is described to open into module：Multichannel intake is provided, all intakes enter after device all by optocoupler carry out electrically every
From；
It is described to output module：The multichannel amount of outputing is provided, including 12V voltage source rapid-releasing delivery outlets and Phototube Coupling
Relay idle contact form delivery outlet.
Above-mentioned DC protection test control apparatus, it is further characterized by：Device provides A/D chip and CPU with serial line interface
The SPI interface of AD is isolated by digital isolator for the mode of chip communication, is adopted so as to fulfill the isolation of d. c. voltage signal
Collection.
The direct current sampled data of the A/D chip acquisition is isolated by intermediate digital isolator with cpu chip, number
The power input isolation voltage of word isolator both sides；
The SPI interface of the cpu chip reads sampled data as main website end from A/D chip.Cpu chip can configure multiple
SPI interface, each SPI interface can connect multiple substations.
Above-mentioned DC protection test control apparatus, it is further characterized by：Device provides protection separating brake function, and protection direct current is led
Draw the normal operation of net.
Device provides automatic reclosing function, after line test meets voltage detecting and load measurement condition, makes circuit
Dc circuit breaker can be automatically engaged so as to the function that restores electricity after transient fault.
Protective device carries out voltage detecting first, and when testing result meets high busbar voltage pattern, device directly overlaps
Lock；When testing result meets power-off busbar pattern, device will not reclosing operation；When testing result meets low busbar voltage pattern
When, device will enter load measurement process, be powered on by measuring resistance to busbar, and measure load resistance, when measurement resistance
When meeting reclosing condition, from dynamic circuit connector dc circuit breaker after reclosing is delayed and (is set by definite value), restore contact net circuit
Power supply.
Device provides combined floodgate authentication function, "on" position is still not satisfied after circuit multiple shot reclosing, then lock-reclosing
Lock function, it is ensured that the reliability of reclosing.
After breaker reclosing, if the duration closed a floodgate is more than judgement reclosing success time definite value, then it is assumed that
Closing success；If in definite value inner breaker dropout this period, load measurement and combined floodgate repeat to unsuccessful reclosing always
Afterload pendulous frequency definite value, is still unable to maintain that "on" position, then protective device enters blocking, lock-reclosing lock and to disconnected
The closing operation of road device.
Advantageous effect：
1st, the present invention provides protective device hardware scheme, device entirety antijamming capability is stronger.
2nd, the mode that the A/D chip with serial line interface communicates with cpu chip is provided, and AD is isolated with digital isolator
SPI interface, so as to fulfill d. c. voltage signal isolation acquire.
Using the SPI interface of cpu chip or fpga chip as main website end, sampled data is read from A/D chip.In 100M
Under dominant frequency, the clock rate of SPI is up to 25M.Fully meet the requirement of direct current sampling.
3rd, flexible HMI modules access way is provided, HMI modules can other modules be separately installed in direct current with device
In switchgear, convenient for running and safeguarding.
Direct current acquisition module, the CPU modules of DC protection test control apparatus are opened into module, output module, communication module and electricity
Source module is integrated in a cabinet, and HMI modules are external, and such design pattern can be easily installed in direct-current switch cabinet
In, main chassis is mounted on inside switch cabinet, and HMI modules are installed on front panel of switch cabinet, convenient for the analysis of operations staff
Debugging and operation maintenance.
The 4th, protection separating brake function is provided, protect the normal operation of DC Traction Network.
Protective device detects any protection acts such as current quick-breaking, DDL, overcurrent, Traction networks overheat, small current neutral grounding
Separating brake dc circuit breaker afterwards protects DC Traction Network not to be damaged.
The 5th, automatic reclosing function is provided, after line test meets voltage detecting and load measurement condition, make circuit wink
When failure after dc circuit breaker can automatically engage so as to the function that restores electricity.
6th, combined floodgate authentication function is provided, it is ensured that the reliability of reclosing.
Description of the drawings
Fig. 1 is DC protection test control apparatus structure diagram in the embodiment of the present invention.
Fig. 2 is that direct current acquires isolated loop in the embodiment of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
The protection supervisory equipment of rail traffic traction substation realizes protection, measurement and the control of traction substation primary equipment
Function processed.The present invention is not related to the improvement of computer program, some control softwares being related to are this field routine techniques.
1st, suitable for the DC protection test control apparatus hardware scheme of rail traffic traction substation
Device fully examines each module design, program execution, signal designation, communication realization etc. in master-plan
Jamproof requirement is considered, device entirety antijamming capability is stronger, when being installed on direct-current switch cabinet, is not required to install other resist additional
Disturbance means, hardware have mainly formed：Direct current/sampling module, communication module, protection CPU modules, HMI modules, open into module,
Output module, power module；The direct current acquisition module, is opened into module, outputs module, communication module and electricity protection CPU modules
Source module is integrated in a main chassis, and the HMI faceplate module is external to be installed on front panel of switch cabinet, main chassis peace
Mounted in inside switch cabinet；The communication module is connected by Ethernet and RS-485 communication interfaces with the protection CPU modules, institute
It states HMI faceplate module by high speed RS232 interface with the protection CPU modules to be connected, the direct current sampling module is opened into module
It is connected with the protection CPU modules, the protection CPU modules are connected with the module of outputing, and the power module provides multichannel
Regulated power supply is powered to each module of device.
Each module relationship is shown in Fig. 1, and each module function is as follows：
● direct current/sampling module provides multiple analog input circuits, is used for defencive function.
● communication module provides the communication interfaces such as Ethernet and RS-485, and transformer plant automatic is can access by network
System, can also access dedicated Commissioning Analysis software, convenient for output Debugging message and accident analysis.
● protection CPU modules：Direct current sampled data and intake information are received, can realize the troubleshooting of various complexity
Function carries out high-speed communication by MODBUS stipulations and HMI modules, various events is made all to can obtain quick response；And realize guarantor
Shield event store and with the functions such as the communication of electric substation automation system.
● HMI modules：Be responsible for Data inputing, liquid crystal display, etc. functions.Module provides Chinese LCD and keyboard is defeated
Enter, man-machine interface is clearly understandable, convenient and simple for operation.It is installed separately with the main chassis of other modules composition.HMI modules lead to
High speed RS232 interface is crossed to communicate with main chassis.
● it opens into module：Module provides multichannel intake, and all intakes enter after device all carries out electricity by optocoupler
Air bound from.
● output module：Module provides the multichannel amount of outputing, including 12V voltage source rapid-releasing delivery outlets and photoelectricity
The delivery outlet of the relay idle contact form of isolation.
● power module：Multipath voltage regulation power supply is provided, is powered to device module.
2nd, direct current acquisition circuit is isolated
The mode that the A/D chip with serial line interface communicates with cpu chip is present embodiments provided, by digital isolator
The SPI interface of AD is isolated, is acquired so as to fulfill the isolation of d. c. voltage signal.As shown in Figure 2.
In Fig. 2, the direct current sampled data of A/D chip acquisition is isolated by intermediate digital isolator with cpu chip,
The isolation voltage of the power input of digital isolator both sides is up to 2000V.
Using the SPI interface of cpu chip as main website end, sampled data is read from A/D chip.Cpu chip can configure multiple
SPI interface, each SPI interface can connect multiple substations.Under 100M dominant frequency, the clock rate of SPI is up to 25M.It fully meets
The requirement of direct current sampling.
3rd, main protection philosophy explanation
The direct current protecting of rail traffic tractive power supply system is mainly carried out by DC switch equipment, that is, dc circuit breaker
Protection.When the direct current cables of electric substation proximal end or distal end, contact net break down, failure can be cut off rapidly.
1) separating brake function is protected, protects the normal operation of DC Traction Network.
Separating brake function is protected to be lost by current quick-breaking, DLL, overcurrent, overload, Traction networks overheat, small current neutral grounding, busbar
The protections such as pressure start.
A) current quick：The protection be for when feeder line occur near terminal fault when protective device quickly outlet set, should
Protection can be as the back-up protection of dc circuit breaker high current dropout protection.
B) DLL is protected：Main protection of the protection as DC feeder protection, mainly for detection of far end short failure.It is logical
Overcurrent change rate (di/dt) and the mutual cooperation of increase in current amount (DeltI) and time increment (DeltT), to judge event
Barrier.
C) overcurrent protection：Back-up protection of the protection as subway DC feeder, protection circuit overall length come area by being delayed
Divide fault current and locomotive starting current.
D) Traction networks overheating protection：The protection is for cable and the thermal overload of contact line.When feeder current is more than contact
Net is long-term to be allowed electric current and reaches certain time, and contact net will overheat, and device embodies the fever feelings of contact net with Warm status Kth
Condition.When Warm status reaches 1.1, which will trip and exports.
E) small current grounding protection：The protection is less than the situation of locomotive electric current for fault current, available for protecting mother
Breaker.
2) automatic reclosing function after line test meets voltage detecting and load measurement condition, makes circuit instantaneously event
Dc circuit breaker can be automatically engaged so as to the function that restores electricity after barrier.
Protective device carries out voltage detecting first, and when testing result meets high busbar voltage pattern, device directly overlaps
Lock；When testing result meets power-off busbar pattern, device will not reclosing operation；When testing result meets low busbar voltage pattern
When, device will enter load measurement process, be powered on by measuring resistance to busbar, and measure load resistance, when measurement resistance
When meeting reclosing condition, from dynamic circuit connector dc circuit breaker after reclosing is delayed and (is set by definite value), restore contact net circuit
Power supply.
3) combined floodgate authentication function still not satisfies "on" position after circuit multiple shot reclosing, then lock-reclosing lock function,
Ensure the reliability of reclosing.
After breaker reclosing, if the duration closed a floodgate is more than judgement reclosing success time definite value, then it is assumed that
Closing success；If in definite value inner breaker dropout this period, load measurement and combined floodgate repeat to unsuccessful reclosing always
Afterload pendulous frequency definite value, is still unable to maintain that "on" position, then protective device enters blocking, lock-reclosing lock and to disconnected
The closing operation of road device.Primary equipment can be avoided to be extended the use of primary equipment by the impact failure of line fault electric current in this way
Service life.
The foregoing is only a preferred embodiment of the present invention, not makees limitation in any form to the present invention, appoints
What those skilled in the art, without departing from the scope of the present invention, technical spirit according to the present invention to
Any simple modification that upper embodiment is made, equivalent variations and modification, are still within the scope of the technical scheme of the invention.
Claims (1)
1. a kind of DC protection test control apparatus suitable for rail traffic traction substation, it is characterised in that：It is adopted including direct current
Original mold part, protection CPU modules, is opened into module, outputs module, HMI faceplate module, power module communication module, and the direct current is adopted
Collection module protection CPU modules, opens module, outputs module, communication module and power module and be integrated in a main chassis,
The HMI faceplate module is external to be installed on front panel of switch cabinet, and main chassis is mounted on inside switch cabinet；The communication module
It is connected by Ethernet and RS-485 communication interfaces with the protection CPU modules, the HMI faceplate module passes through High-Speed RS 232
Interface is connected with the protection CPU modules, and the direct current sampling module is opened and CPU modules protected to be connected with described into module, described
Protection CPU modules are connected with the module of outputing, and the power module provides multipath voltage regulation power supply, power to each module of device；
The direct current sampling module provides multiple analog input circuits, is used for defencive function；
The communication module can access electric substation automation system or the dedicated Commissioning Analysis software of access by network, be convenient for
Export Debugging message and accident analysis；
The protection CPU modules：Direct current sampled data and intake information are received, realizes the trouble handling function of various complexity,
High-speed communication is carried out by MODBUS stipulations and HMI faceplate module, various events is made to obtain quick response；And realize protection event
Storage and the communication function with electric substation automation system；
The HMI faceplate module：It is responsible for Data inputing, liquid crystal display, is installed separately with the main chassis of other modules composition,
HMI faceplate module is communicated by high speed RS232 interface with main chassis；
It is described to open into module：Multichannel intake is provided, all intakes enter after device all carries out electrical isolation by optocoupler；
It is described to output module：The multichannel amount of outputing is provided, including 12V voltage source rapid-releasing delivery outlets and Phototube Coupling after
The delivery outlet of electric appliance idle contact form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721668542.1U CN207588443U (en) | 2017-12-04 | 2017-12-04 | Suitable for the DC protection test control apparatus of rail traffic traction substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721668542.1U CN207588443U (en) | 2017-12-04 | 2017-12-04 | Suitable for the DC protection test control apparatus of rail traffic traction substation |
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| Publication Number | Publication Date |
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| CN207588443U true CN207588443U (en) | 2018-07-06 |
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| CN201721668542.1U Active CN207588443U (en) | 2017-12-04 | 2017-12-04 | Suitable for the DC protection test control apparatus of rail traffic traction substation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167438A (en) * | 2018-09-30 | 2019-01-08 | 成都交大许继电气有限责任公司 | A kind of novel protected measure and control device suitable for tractive power supply system |
| CN109286171A (en) * | 2018-11-14 | 2019-01-29 | 南京国电南自轨道交通工程有限公司 | Breaker tripping and closing method is repeated for the locking breaker of DC traction feeder protection equipment |
| CN110034608A (en) * | 2019-04-28 | 2019-07-19 | 湖北三江航天万峰科技发展有限公司 | A kind of composite control apparatus for high voltage direct current distribution box |
-
2017
- 2017-12-04 CN CN201721668542.1U patent/CN207588443U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167438A (en) * | 2018-09-30 | 2019-01-08 | 成都交大许继电气有限责任公司 | A kind of novel protected measure and control device suitable for tractive power supply system |
| CN109286171A (en) * | 2018-11-14 | 2019-01-29 | 南京国电南自轨道交通工程有限公司 | Breaker tripping and closing method is repeated for the locking breaker of DC traction feeder protection equipment |
| CN109286171B (en) * | 2018-11-14 | 2020-02-07 | 南京国电南自轨道交通工程有限公司 | Repeated tripping and closing method of locking circuit breaker for direct-current traction feeder protection device |
| CN110034608A (en) * | 2019-04-28 | 2019-07-19 | 湖北三江航天万峰科技发展有限公司 | A kind of composite control apparatus for high voltage direct current distribution box |
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