CN209748268U - intelligent traction substation area protection device - Google Patents
intelligent traction substation area protection device Download PDFInfo
- Publication number
- CN209748268U CN209748268U CN201920744470.7U CN201920744470U CN209748268U CN 209748268 U CN209748268 U CN 209748268U CN 201920744470 U CN201920744470 U CN 201920744470U CN 209748268 U CN209748268 U CN 209748268U
- Authority
- CN
- China
- Prior art keywords
- protection
- module
- traction substation
- protection device
- station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
the utility model provides an intelligence traction substation station territory protection device, this station territory protection device carry out SV and GOOSE communication through process layer network directness and wall level protection device on the spot, synthesize the electric quantity and the switching value information of gathering the interior multichannel wall device of station, adopt network sampling network tripping operation mode to the tripping operation of protection logic strategy control circuit breaker of optimization can realize traction substation's intelligent protection, has improved the reliability and the fast nature of protection. The intelligent traction substation station domain protection device has the functions of breaker failure protection, simple bus protection, station domain backup power automatic switching protection, redundancy protection of single protection configuration equipment and the like. Meanwhile, the intelligent traction substation can be used as a component of wide area protection, necessary technical support is provided for the realization of the wide area protection, the on-site level protection and the wide area protection are combined, the hierarchical protection of the intelligent traction substation can be realized, and the intelligent traction substation has a good application prospect.
Description
Technical Field
The invention relates to the field of traction power supply systems of electrified railways. In particular to a novel intelligent traction substation area protection device.
background
with the vigorous development of national smart grid construction, the networking mode of the power grid is increasingly complex, the operation mode is flexible and changeable, and higher requirements are provided for corresponding relay protection and control technologies. At present, most relay protection configuration schemes of intelligent traction substations in China use traditional distributed protection, and due to the fact that the obtained information is few, the protection based on single-ended electrical quantity information cannot make optimized protection measures, for example, conventional backup protection needs to achieve selectivity of upper-level protection and lower-level protection through mutual matching of action delay, action fixed value and action interval of multi-section protection, and therefore the problems of long action delay, inaccurate fault location, complex mutual matching and the like exist. In addition, the traditional protection control system also has the problems of repeated hardware configuration, high investment cost, complex interface, difficult maintenance and the like, and in order to improve the performance of the existing relay protection, the technical advantages of the intelligent substation are fully and effectively utilized, and the substation area protection based on multi-terminal electric quantity and switching value information becomes a development trend on the premise of interactive sharing of digital information.
disclosure of Invention
Aiming at the technical problems, the invention provides a novel intelligent traction substation area protection device, which directly communicates with a spacer layer on-site level protection device through a process layer network to perform SV and GOOSE communication, acquires an electrical sampling value and switching value information of a total station in real time, controls the tripping of a circuit breaker through an optimized protection logic strategy on the basis, realizes the rapid and accurate removal of faults, and improves the reliability and the quick action of protection. The device provides the redundant protection functions of equipment such as circuit breaker failure protection, simple bus protection, station area spare power automatic switching protection, feeder line and main transformer low-voltage side outgoing line and the like.
In order to achieve the above purpose, the invention is realized by the following technical scheme: a novel intelligent traction substation area protection device is accessed to a process layer network through an SV/GOOSE interface and is in direct communication with a spacer layer on-site level protection device, and comprises a CPU module, an access module, a panel module and a power supply module;
A CPU module: the core module of the device has the functions of collecting and processing network data, starting scanning and time synchronization, and communicating with the panel module and the monitoring system, and can realize various complex fault processing functions; the double-optical-port access process layer network and the station control layer network are provided, the process layer network adopts an SV and GOOSE common network mode, and a double-network redundancy structure ensures the reliability of data transmission.
opening a mold: the module provides multi-path access, and all the access enters the device and is electrically isolated by the optical coupler;
Panel module: the keyboard is responsible for keyboard processing and liquid crystal display functions; the module provides a Chinese character liquid crystal display and keyboard input, and a human-computer interface is clear and easy to understand and convenient and simple to operate; the panel module and the CPU module are communicated through an SPI (serial peripheral interface), so that a large number of bus external leads of the CPU module are avoided, and the reliability of the device is improved;
A power supply module: and providing a plurality of paths of stabilized voltage power supplies for the device module.
The on-site protection device comprises a main transformer high-voltage side protection device, a main transformer low-voltage side protection device, a main transformer measurement and control device, a feeder line protection device, a capacitor protection device, a spare power automatic switching device and a fault distance measuring device;
When a feeder line, a capacitor or a transformer used by the feeder line fails to trip, a main transformer low-voltage side circuit breaker is tripped to operate through a GOOSE signal, and an isolating switch of the failed circuit breaker is switched off to isolate a fault;
after overcurrent protection of a main transformer low-voltage side protection device is started, judging whether all outgoing lines on the same bus have overcurrent starting signals or not, if the outgoing lines have the overcurrent starting signals, judging that the outgoing lines have an outgoing line fault, and locking simple bus protection; if the outgoing line has no overcurrent starting signal, the bus fault is judged, a simple bus action signal is output, and a main transformer low-voltage side circuit breaker is tripped;
When GOOSE information of incoming line voltage loss of a main transformer high-voltage side protection device or main transformer internal faults is received, combining all switch position signals, and outputting spare power automatic switching action logic; and if receiving a voltage loss signal of the operating inlet wire, starting voltage loss self-throw of the inlet wire, if receiving a fault signal of a main transformer, starting fault self-throw of the main transformer, and giving a GOOSE signal sequence switching-on and switching-off corresponding switch after self-throw starting.
The utility model discloses following technological effect has:
The station area protection device can realize panoramic information sharing of analog quantity, input quantity and output quantity of the whole station through a process layer network, can realize intelligent protection of a traction substation, and improves the reliability and quick-action performance of protection.
the station area protection device provides circuit breaker failure protection, simple bus protection, station area spare power automatic switching and redundancy protection of single protection configuration equipment.
The station domain protection device adopts network communication in an SV and GOOSE common network mode, accesses a process layer network through an SV/GOOSE interface, and directly communicates with a spacer layer protection device, thereby realizing network sampling and network tripping.
the station domain protection device can be used as a component of wide area protection, integrates and processes the information of the station, submits the information to a wide area protection system, receives a wide area protection decision instruction to complete control of a related breaker, and provides necessary technical support for realization of the wide area protection. And the intelligent traction substation hierarchical protection can be realized by combining in-situ protection and wide-area protection.
Drawings
fig. 1 is a schematic structural diagram of an intelligent traction substation station domain protection device in this embodiment.
Fig. 2 is a schematic wiring diagram of the intelligent traction substation station domain protection device in this embodiment.
Detailed Description
The present invention will be further described in detail with reference to the drawings and specific embodiments, which are illustrative only and not limiting, and the scope of the present invention should not be limited thereby, and any modifications made on the basis of the technical solutions according to the technical ideas presented by the present invention are within the scope of the present invention; the technology not related to the invention can be realized by the prior art.
The intelligent traction substation station domain protection device comprehensively acquires the electrical quantity and switching value information of a plurality of paths of interlayer devices in a station in a digital mode, and can optimize the traditional relay protection performance. The intelligent traction substation hierarchical protection can be realized by combining the local protection and the wide-area protection.
1. The hardware design scheme is as follows:
As shown in fig. 1, a schematic structural diagram of a novel intelligent traction substation station domain protection device is provided.
the device fully considers the anti-interference requirements on the aspects of module design, program execution, signal indication, communication realization and the like during the overall design, has stronger overall anti-interference capability, and does not need to be additionally provided with other anti-interference devices during screen assembly. The hardware mainly comprises a CPU module, an open-in module, a panel module and a power supply module.
The functions of each module are as follows:
A CPU module: the core module of the device has the basic functions of network data acquisition and processing, entry scanning, time synchronization, communication with the panel module and the monitoring system and the like, and can realize various complex fault processing functions. The double-optical-port access process layer network and the station control layer network are provided, the process layer network adopts an SV and GOOSE common network mode, and a double-network redundancy structure ensures the reliability of data transmission.
Opening a mold: the module provides multiple tap-in access, all of which are electrically isolated by optocouplers after the tap-in device.
Panel module: and the keyboard is responsible for keyboard processing, liquid crystal display and other functions. The module provides Chinese character liquid crystal display and keyboard input, and the man-machine interface is clear and easy to understand, and the operation is convenient and simple. The panel module and the CPU module are communicated through the SPI, so that a large number of buses of the CPU module are prevented from being led out, and the reliability of the device is improved.
a power supply module: and providing a plurality of paths of stabilized voltage power supplies for the device module.
2. The main protection functions and principle of the station domain protection device are explained as follows:
As shown in fig. 2, the wiring schematic diagram of the station domain protection device of the intelligent traction substation, wherein the on-site protection device includes a main transformer high-voltage side protection device, a main transformer low-voltage side protection device, a main transformer measurement and control device, a feeder protection device, a capacitor protection device, a spare power automatic switching device, a fault distance measurement device and the like, the on-site protection device is accessed to a process level network through an SV/GOOSE interface, the station domain protection device receives information of electrical quantity and switching quantity of the on-site protection device, and the network sampling and network tripping are adopted to realize the station domain protection function.
And (3) circuit breaker failure protection: when a feeder line, a capacitor or a transformer used by the feeder line fails to trip, the main transformer low-voltage side circuit breaker is operated through GOOSE signal tripping, and a disconnecting switch of the failed circuit breaker is switched off to isolate faults.
Simple bus protection: after overcurrent protection of the main transformer low-voltage side protection device is started, whether all outgoing lines on the same bus have overcurrent starting signals or not is judged, if the outgoing lines have the overcurrent starting signals, the outgoing line faults are judged, and simple bus protection is locked. If the outgoing line has no overcurrent starting signal, the bus fault is judged, a simple bus action signal is output, and the main transformer low-voltage side circuit breaker is tripped.
Station area spare power automatic switching: when GOOSE information of incoming line voltage loss of a main transformer high-voltage side protection device or main transformer internal faults is received, combining all switch position signals, and outputting spare power automatic switching action logic; and if receiving a voltage loss signal of the operating inlet wire, starting voltage loss self-throw of the inlet wire, if receiving a fault signal of a main transformer, starting fault self-throw of the main transformer, and giving a GOOSE signal sequence switching-on and switching-off corresponding switch after self-throw starting.
And (4) redundancy protection: the redundancy protection is carried out on the feeder line, the capacitor, the transformer and the main transformer low-voltage side equipment, the redundancy of the simplex protection function is increased, and the power supply reliability of the total station is improved. The redundant protection is configured for overcurrent protection, current quick-break protection, distance protection and current increment protection on the feeder line, and the redundant protection and the on-site protection are configured in a one-to-one correspondence mode. When the local level protection is abnormal, the station domain level protection acts as a backup protection.
3. One embodiment of station domain protection device for wide area protection
The station-area protection plays an important role in hierarchical protection of the smart power grid, and provides necessary technical support for realization of wide-area protection, and the wide-area protection is implemented by a local protection device and a station-area protection device together. All the hierarchical protection of the substation, the AT station and the subarea station of the same power supply arm form a wide area protection system through a process layer network and a wide area network. When a contact network has a fault, the fault distance measuring device judges the uplink or downlink fault direction according to the fault alternating current quantity, outputs a GOOSE signal of the fault direction, locks the feeder protection of the substation in the non-fault direction for 200ms (the locking time can be set), and the station domain protection device jointly jumps the interconnection feeder circuit breakers of the AT station and the subarea station in the fault direction, so that the fault function can be quickly and selectively removed when the power supply arm has a fault.
Claims (2)
1. The utility model provides an intelligence traction substation station territory protection device which characterized in that: the system is accessed to a process layer network through an SV/GOOSE interface and directly communicated with an interlayer on-site protection device, and comprises a CPU module, an access module, a panel module and a power supply module;
The CPU module: the core module of the device has the functions of acquiring and processing network data, starting scanning and time synchronization, and communicating with the panel module and the monitoring system to realize a complex fault processing function;
The opening module is: the module provides multi-path access, and all the access enters the device and is electrically isolated by the optical coupler;
The panel module: the keyboard is responsible for keyboard processing and liquid crystal display functions; the module provides a Chinese character liquid crystal display and keyboard input, and a human-computer interface is clear and easy to understand and convenient and simple to operate; the panel module and the CPU module are communicated through an SPI (serial peripheral interface), so that a large number of bus external leads of the CPU module are avoided, and the reliability of the device is improved;
the power supply module: and providing a plurality of paths of stabilized voltage power supplies for the device module.
2. The intelligent traction substation station domain protection device of claim 1, characterized in that: the CPU module provides a double-optical-port access process layer network and a station control layer network, the process layer network adopts an SV and GOOSE common network mode, and a double-network redundancy architecture ensures the reliability of data transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920744470.7U CN209748268U (en) | 2019-05-22 | 2019-05-22 | intelligent traction substation area protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920744470.7U CN209748268U (en) | 2019-05-22 | 2019-05-22 | intelligent traction substation area protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209748268U true CN209748268U (en) | 2019-12-06 |
Family
ID=68722953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920744470.7U Active CN209748268U (en) | 2019-05-22 | 2019-05-22 | intelligent traction substation area protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209748268U (en) |
Cited By (3)
| 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 |
| CN113241742A (en) * | 2021-05-26 | 2021-08-10 | 广东电网有限责任公司 | Intelligent substation fault removal method and device |
| CN114430143A (en) * | 2022-01-13 | 2022-05-03 | 上海新联合电气有限公司 | Intelligent power distribution cabinet adopting looped network optical fiber communication technology |
-
2019
- 2019-05-22 CN CN201920744470.7U patent/CN209748268U/en active Active
Cited By (4)
| 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 |
| 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 |
| CN113241742A (en) * | 2021-05-26 | 2021-08-10 | 广东电网有限责任公司 | Intelligent substation fault removal method and device |
| CN114430143A (en) * | 2022-01-13 | 2022-05-03 | 上海新联合电气有限公司 | Intelligent power distribution cabinet adopting looped network optical fiber communication technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209748268U (en) | intelligent traction substation area protection device | |
| WO2021139071A1 (en) | Smart outdoor switch cabinet, and closed-loop i-shaped power distribution network for same | |
| CN202076784U (en) | Protective system for collecting line of wind power plant | |
| CN111431057A (en) | Integrated intelligent ring main unit system, intelligent power distribution network and fault positioning method | |
| RU107411U1 (en) | CONTROL AND MONITORING MODULE OF THE COMPLETE DISTRIBUTION DEVICE CELL AND THE DIGITAL SUBSTATION WITH THE COMPLETE DISTRIBUTION DEVICE CELL WITH THE SUCH MODULE | |
| CN103560585A (en) | Digitized line protection measurement and control system suitable for metro industry | |
| CN108718087B (en) | Spare power automatic switching system suitable for medium-voltage power supply ring network of rail transit | |
| CN111244787A (en) | Distribution box | |
| CN110635562A (en) | Self-adaptive area spare power automatic switching device and self-adaptive area spare power automatic switching method | |
| CN214313029U (en) | Wiring structure of gas relay for converter transformer | |
| CN111478188B (en) | Intelligent high-voltage switch | |
| CN210273598U (en) | GIS switch combination electric body terminal, integrative integrated terminal of change on spot | |
| Zhao et al. | Functions and implementation of substation-area backup protection in smart substation | |
| CN204334126U (en) | The measure and control device of 10kV switching station | |
| CN112967904A (en) | Wiring structure of gas relay for converter transformer and signal output method | |
| CN217115622U (en) | Line protection measurement and control device suitable for subway medium voltage power supply system | |
| CN201629565U (en) | Switch cabinet arc light protection system with compact structure | |
| CN107026433B (en) | Rapid protection system and method for current collection circuit of new energy power station | |
| CN215498429U (en) | Intelligent integrated feeder protection measurement and control device | |
| CN218958617U (en) | Power supply fast switching system for medium-voltage transformer substation of industrial enterprise | |
| CN211456807U (en) | Feeder automation protection control system | |
| CN217332791U (en) | Grounding line selection system based on peer-to-peer communication | |
| CN110445105B (en) | Substation relay protection method based on universal IED function-oriented | |
| CN103795147B (en) | Method for switching secondary voltages of multiple buses of intelligent substation | |
| CN114243887B (en) | Method for bus-tie spare power automatic switching of intelligent substation for urban rail transit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |