CN104269935B - Pressure looped network protection system interval layer network-building method in a kind of novel subway - Google Patents
Pressure looped network protection system interval layer network-building method in a kind of novel subway Download PDFInfo
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- CN104269935B CN104269935B CN201410573421.3A CN201410573421A CN104269935B CN 104269935 B CN104269935 B CN 104269935B CN 201410573421 A CN201410573421 A CN 201410573421A CN 104269935 B CN104269935 B CN 104269935B
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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Abstract
The invention discloses pressure looped network protection system interval layer network-building method in a kind of subway; in electric power supply system for subway in the Digital RPS of pressure ring net; communicated by wall GOOSE network with the protection device between electric substation in electric substation; intercourse protection startup, action and position of the switch information; monitor higher level's switch and the protection act situation of subordinate's switch, then pass through logical judgment and realize the quickly location of looped network bus and cable fault, quickly excise.This method uses VLAN overlap mode, a unique VLAN ID is distributed to each electric substation, can communicate with the adjacent electric substation of front and back simultaneously, realize GOOSE message orientation in a network, limit area transmissions, can effectively limit the transmission range of broadcast packet, improve network efficiency, improve system stability and safety.
Description
Technical field
This programme relates to metro industry electric power system digital protection field.Program optimization wall networking configuration, improves network efficiency, passes through the quickly location of the startup of wall GOOSE network exchange protection, action and position of the switch information realization looped network bus and cable fault, quickly excises between protection device.
Background technology
In recent years, in the track traffic electric power of domestic city, pressure ring net all adopts " circuit optical fiber longitudinal differential protection+overcurrent protection " allocation plan mostly.Overcurrent protection is as the main protection pressing busbar short-circuit in the back-up protection of looped network cable short trouble and electric substation.Overcurrent protection operation time limit coordinates step by step, and for big looped network power supply mode, this time coordinations is difficult to meet protective seletion requirement, will result in multiple electric substation and has a power failure simultaneously, affect passenger transport under failure condition.Particularly when bus occur short trouble and differential out of service time occur cable fault, overcurrent protection need to could excise fault by time delay one section longer.Cause that the overcurrent protection operation time limit near power supply point place is longer additionally, coordinate step by step, be unfavorable for that fault is quickly excised.
Along with the development of GOOSE network communication technology in Digital RPS; support that realizing urban track traffic Medium voltage power supply system protects the digital protection technology interconnected with information sharing between device to be capable of the defencive function of greater degree completely, it is achieved quickly trip selectively.This protection system adopts wall GOOSE network; realize institute interior and between communication between equipment and information sharing; protection device can monitor, by GOOSE net, the protection act situation that higher level switchs and subordinate switchs, and then passes through logical judgment and realizes the quickly location of looped network bus and cable fault, quickly excises.
The recurrent network that the wall GOOSE network of looped network Digital RPS is made up of the switch concatenation between circuit transformer station along the line.As shown in Figure 1,3.
GOOSE message is multicast message, if multicast message is not done any configuration management in a switch and broadcasted forwarding exactly.A large amount of GOOSE message are likely to when occurring cause the buffer overflow receiving device network interface card to lose message simultaneously, it is also possible to cause network load instantaneous overweight and lose message.GOOSE employing order retransmission mechanism, occurs even without event, network also has a large amount of " heart beating " multicast message exist.If not carrying out rational multicast message filtration, the multicast message that on network, all protection devices send all can be received, and the communication of protection device and data-handling capacity will be caused and have a strong impact on by this.When power system is broken down; multiple protection devices can be simultaneously emitted by very short GOOSE message a large amount of interval time; it is likely to cause network overload, communication delay, protection device net card to receive buffer overflow and lose message, thus causing that the movement time of protection device is elongated, or can not action message.Therefore it is very necessary for taking effective method to be transmitted GOOSE multicast message limiting, isolating filtration.
Investigate switch virtual LAN VLAN and cast communication technology, and in conjunction with GOOSE message transmission mechanism, two kinds of methods can be used to realize GOOSE multicast filtering: switch VLAN isolation and switch multicast filtering.
Summary of the invention
For prior art Problems existing, this programme adopts VLAN overlap mode, it is possible to effectively limit the transmission range of broadcast packet.By dividing VLAN, and being limited by port, broadcasting packet is limited in the sphere of action of particular vlan by switch, improves the utilization ratio of Internet resources, limits network storm coverage, improves security of system and stability.By configuring VLAN, it is achieved logic isolation between different VLAN on network, thus realizing the safety of message reference.
Protection system interval layer networking plan pressure ring net electric power system suitable in the urban track traffic such as subway, light rail, it is achieved quickly the positioning of looped network bus and cable fault, quickly excise.It is characterized in that following some:
1, in subway, pressure ring net transformer station Digital RPS is made up of protection networking equipments such as device and Ethernet switch such as the protection of looped network line, mother protection, protection for feed line.Starlan is formed by Ethernet switch between the GOOSE network interface of each protection.Circuit transformer station's switch along the line forms a large-scale chain LAN by optical fiber cascade between institute.
2, between the protection device in same transformer station, require over GOOSE network alteration switch position between the line of adjacent substations protection device, protection starts, the real time information of protection exit.Irrelevant information exchange between non-conterminous electric substation, it is necessary to isolate the GOOSE message between them.
3, to each switch one unique VLANID of distribution, and configure upper before and after adjacent VLANID so that it is be capable of identify that, accept adjacent message.
4, on switches, participate in the port of exchange GOOSE information, including protection device port and adjacent institute cascade port, be all configured to TRUNK port so that it is can receive, identify the message of multiple VLAN.Cascade port arranges VLAN between institute and forbids port, block GOOSE message and propagate to far-end, unrelated transformer station.
5, digital communication current protecting function is provided; the enabling signal of the overcurrent protection of other all switches on the same bus of enabling signal and this electric substation of the overcurrent protection of the same line switching of adjacent electric substation is received by GOOSE network; and the stream enabling signal of crossing in conjunction with this device carrys out intelligent decision and is out of order section; identify is cable fault or bus-bar fault, it is achieved selectivity trips.
6, digital communication zero is provided to flow defencive function; the enabling signal of the zero sequence stream protection of other all switches on the same bus of enabling signal and this electric substation of the zero-sequence current protection of the same line switching of adjacent electric substation is received by GOOSE network; and carry out intelligent decision in conjunction with the zero stream enabling signal of this device and be out of order section; identify is cable fault or bus-bar fault, it is achieved selectivity trips.
Beneficial effect: track traffic ring network power supply system is when there is various method of operation fault; digital communication protection networking plan can meet the requirement of the selectivity of protection, quick-action, susceptiveness, reliability, and can according to digital communication protection scheme precision maneuver.Adopt VLAN overlap mode configuration management network, it is possible to effectively limit the transmission range of broadcast packet, improve network efficiency, improve system stability and safety.
Accompanying drawing explanation
Fig. 1 is pressure looped network protection system network architecture figure in subway.
Fig. 2 is the switch ports themselves configuration of single transformer station.
Fig. 3 is the VLAN sphere of action between electric substation.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
In electric power supply system for subway in the Digital RPS of pressure ring net; communicated by wall GOOSE network with the protection device between electric substation in electric substation; intercourse protection startup, action and position of the switch information; monitor higher level's switch and the protection act situation of subordinate's switch, then pass through logical judgment and realize the quickly location of looped network bus and cable fault, quickly excise.This programme uses VLAN overlap mode, a unique VLANID is distributed to each electric substation, can communicate with the adjacent electric substation of front and back simultaneously, realize GOOSE message orientation in a network, limit area transmissions, can effectively limit the transmission range of broadcast packet, improve network efficiency, improve system stability and safety.
1. the establishment of wall GOOSE network and configuration.
1) configure two technical grade Ethernet switches in each electric substation, between electric substation, connect adjacent institute switch with 8 core optical cables (4 cores are standby), constitute the double; two net of stand-by heat completely.Switch has the property that the environment and EMC Requirements that meet IEC61850-3 standards for industrial Ethernet switch, support IEEE802.1P standard ethernet message priority, support abundant VLAN (VLAN) technical characteristic, effectively prevent broadcast storm and realize security isolation.
2) the static VLAN of configuration on each switch, it is necessary to configure the VLANID (upwards cascade) of the VLANID of three VLAN, ID respectively our stations, last neighbor stations, the VLANID (downward cascade) of next neighbor stations.And port is forbidden in setting in the VLAN of upwards cascade, this port is downward cascade port；Arranging in the VLAN of downward cascade and forbid port, this port is upwards cascade port.
3) configuration port on each switch: the PVID of all of the port is arranged to the VLANID of this locality.PORT1 is upwards cascade port, and PORT2 is downward cascade port, and PORT3-8 needs to carry out the GOOSE line communicated with adjacent substations to protect device port, and above-mentioned port is arranged to Trunk mouth.Other port is arranged to Edge mouth, need not be used with the protection device of adjacent exchanged information.The PVIDFormat of PORT1 and PORT2 is Tagged (message spread out of adds VLAN tag), and other are Untagged (message spread out of is not added with VLAN tag).
Through above-mentioned configuration, as in figure 2 it is shown, the native vlan action scope of each electric substation covers this institute and neighbouring institute, serve the overlapping effect of VLAN.The message that each substation protection device sends out, is all transmitted only in the switch of this institute and neighbouring institute, will not transmit to farther electric substation again.The GOOSE message that each line protection device can receive this institute and adjacent protect device sends, all the other protect devices can only receive the GOOSE message that sends of interior device.Effectively isolate the GOOSE message transmission at the whole network, improve the utilization ratio of GOOSE network, limit the spread scope of " network storm ".
2, protection communication engagement process explanation.
Digitized route protection measure and control device can configure as the line back-up protection of electric substation, is realized the protection of each cable and bus by above-mentioned wall GOOSE net exchange information, crosses stream function for digital communication:
A) cable fault tripping operation
When the overcurrent protection of this line unit starts; GOOSE signal is started without the overcurrent protection receiving the same line unit of adjacent electric substation in the delay time adjusted; and it is normal with this apparatus GOOSE communication; electric current time delay crosses the setting valve of stream time more than digital communication; protection device is judged as that this line switching jumped by cable fault, and the same line switching of adjacent electric substation jumped by concurrent GOOSE signal connection.
B) bus-bar fault tripping operation
When the overcurrent protection of this line unit starts; GOOSE signal is started without the overcurrent protection receiving other all devices on the same bus of this electric substation in the delay time adjusted; and communicate normally with the equal GOOSE of these devices; electric current time delay crosses the setting valve of stream time more than digital communication; protection device is judged as that bus-bar fault jumps this line switching, and the same line switching of adjacent electric substation jumped by concurrent GOOSE signal connection.
Although the present invention is with preferred embodiment openly as above; but embodiment and accompanying drawing are not for limiting the invention, any it is familiar with this those skilled in the art, without departing from the spirit and scope of the invention; from when can making various changes or retouch, equally within protection scope of the present invention.Therefore protection scope of the present invention should with being as the criterion that claims hereof protection domain defines.
Claims (7)
1. a subway is pressed looped network protection system interval layer network-building method, it is characterised in that:
Configure two technical grade Ethernet switches in each electric substation, between electric substation, connect adjacent institute switch with optical cable, constitute the double; two net of stand-by heat completely；
The static VLAN of configuration on the switch of each electric substation, it is necessary to configure the VLANID upwards cascade of the VLANID of three VLAN, ID respectively our stations, last neighbor stations, the downward cascade of VLANID of next neighbor stations；And port is forbidden in setting in the VLAN of upwards cascade, this port is downward cascade port；Arranging in the VLAN of downward cascade and forbid port, this port is upwards cascade port；
The switch of each electric substation configures port: the PVID of all of the port is arranged to the VLANID of this locality；PORT1 is upwards cascade port; PORT2 is downward cascade port; PORT3-8 needs to carry out the GOOSE line communicated protection device port with adjacent substations; device port is protected to be arranged to Trunk mouth described line; other port is arranged to Edge mouth, need not be used with the protection device of adjacent exchanged information；The PVIDFormat of PORT1 and PORT2 is that the Tagged message spread out of adds VLAN tag, other be not added with VLAN tag for the Untagged message spread out of.
2. subway according to claim 1 is pressed looped network protection system interval layer network-building method, it is characterised in that:
Described technical grade Ethernet switch meets environment and the EMC Requirements of IEC61850-3 standards for industrial Ethernet switch, support IEEE802.1P standard ethernet message priority, support abundant VLAN (VLAN) technical characteristic, effectively prevent broadcast storm and realize security isolation.
3. subway according to claim 1 is pressed looped network protection system interval layer network-building method, it is characterised in that:
The native vlan action scope of each electric substation covers this institute and neighbouring institute, serves the overlapping effect of VLAN；The message that each substation protection device sends out, is all transmitted only in the switch of this institute and neighbouring institute, will not transmit to farther electric substation again；The GOOSE message that each line protection device can be received by this institute and adjacent protect device sends, all the other protect devices can only receive the GOOSE message that sends of interior device.
4. subway according to claim 1 is pressed looped network protection system interval layer network-building method, it is characterised in that:
Distribute a unique VLANID to the switch of each electric substation, and configure upper before and after adjacent VLANID so that it is be capable of identify that, accept adjacent message.
5. subway according to claim 1 is pressed looped network protection system interval layer network-building method, it is characterised in that:
On switches, participate in the port of exchange GOOSE information, including protection device port and adjacent institute cascade port, be all configured to TRUNK port so that it is can receive, identify the message of multiple VLAN；Cascade port arranges VLAN between institute and forbids port, block GOOSE message and propagate to far-end, unrelated transformer station.
6. subway according to claim 1 is pressed looped network protection system interval layer network-building method, it is characterised in that:
By the enabling signal of the overcurrent protection of other all switches on the same bus of enabling signal and this electric substation of the overcurrent protection of the same line switching of the wall GOOSE network adjacent electric substation of reception; and combined stream enabling signal and carry out intelligent decision and be out of order section; identify is cable fault or bus-bar fault, it is achieved selectivity trips.
7. subway according to claim 1 is pressed looped network protection system interval layer network-building method, it is characterised in that:
By the enabling signal of the zero sequence stream protection of other all switches on the same bus of enabling signal and this electric substation of the zero-sequence current protection of the same line switching of the wall GOOSE network adjacent electric substation of reception; and carry out intelligent decision in conjunction with zero stream enabling signal and be out of order section; identify is cable fault or bus-bar fault, it is achieved selectivity trips.
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| CN104319744B (en) * | 2014-10-13 | 2017-02-15 | 华中科技大学 | Substation system based on protective intelligent center system |
| CN105306328B (en) * | 2015-11-03 | 2018-09-21 | 南京国电南自电网自动化有限公司 | A kind of secondary equipment of intelligent converting station looped network distributed structure/architecture method and system |
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| CN102833119B (en) * | 2012-09-29 | 2015-03-11 | 南京国电南自轨道交通工程有限公司 | Method for synchronously receiving and processing real-time data under dual-network redundancy mechanism |
| US9209901B2 (en) * | 2012-11-20 | 2015-12-08 | Telefonaktiebolaget L M Ericsson (Publ) | Configurable single-fiber or dual-fiber optical transceiver |
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Address after: No. 38, New Model Road, Gulou District, Nanjing City, Jiangsu Province, 210000 Patentee after: Nanjing Guodian Nanzi Railway Traffic Engineering Co., Ltd. Address before: 210000 No. 8 Xinghuo Road, Pukou District, Nanjing City, Jiangsu Province Patentee before: Nanjing Guodian Nanzi Railway Traffic Engineering Co., Ltd. |