CN209435247U - A kind of intelligent substation network - Google Patents

Abstract

The utility model discloses a kind of intelligent substation networks, belong to intelligent substation technical field, including switched LAN, it further include the domain DiffServ, the switched LAN includes subnet and interchanger, hub is equipped in subnet, hub is connect with interchanger, and interchanger is connect with the domain DiffServ.The utility model proposes the switched LANs of the hub composition based on DiffServ mechanism to optimize to intelligent substation network performance, improves the efficiency of transmission of network.

Description

A kind of intelligent substation network

Technical field

The utility model relates to intelligent substation technical fields, and in particular to a kind of intelligent substation network.

Background technique

Intelligent substation is using advanced technologies such as communication, control and intelligence, by the digitlization of primary equipment parameter, standardization And standardization, it realizes the functions such as substation's real-time monitoring and automatic control, reduces manual intervention and improve substation operation and stablize Property.With the continuous development of intelligent substation, important component of the intelligent substation communication network as the automation of transformation substations, Can the performance of substation communication network meet the requirement of automation of transformation substations function, become electric system and be badly in need of asking for research Topic.

Meanwhile with the continuous development of computer technology, intelligent control and network communication technology, gushed in terms of network communication Reveal a large amount of technologies, such as passive optical-fiber network (Passive Optical Network, PON) technology, ethernet passive optical network (Ethernet Passive Optical Network, EPON) technology, switched LAN (Switching LAN) and DieffServ (Difference Service) mechanism etc. improves transmission performance for intelligent transformer substation information and provides condition.

Virtual local area network technology and ethernet passive optical network technology, virtual LAN (virtual are used in the prior art Local area network, VLAN) it is one group of equipment and user in logic, these equipment can be according to related to user They are organized and are in communication with each other by factor.On the basis of not increasing other hardware, a local network LAN can be drawn Be divided into the LAN of multiple logics, between different VLAN cannot direct intercommunication, the LAN of logic each in this way is limited to one In VLAN, bandwidth is saved.In intelligent substation communication network, vlan technology is by relevant intelligent electronic device (intelligent electronic device, IED) is divided into different VLAN, improves COMMUNICATION NETWORK PERFORMANCES.In engineering In application process, the artificial participation of the division of VLAN is higher, needs to be configured every interchanger, heavy workload.

Ethernet passive optical network (Ethernet Passive Optical Network, EPON) technology, be based on The PON technology netted very much.EPON technology mainly has dual-ring network networking and hand in hand two kinds of dual link networking in the application.Wherein, double Ring network is exactly to be attached using a bicyclic net mode, in the equipment of substation's optical line terminal so that often One device of optical network unit passes through two optical splitters respectively and connect with dual-ring network, finally by related terminal device and optical-fiber network list Element device is connected；Dual link networking is exactly between the optical line terminal equipment of Liang Ge substation, using dual link hand in hand Mode is attached, so that each optical line terminal equipment is connected with two optical splitters respectively again, then associated terminal is set It is standby to be connected with device of optical network unit.EPON equipment price is higher than conventional ethernet hardware equipment；Different vendor's equipment it is simultaneous Capacitive difference and interoperability difference etc..

Due to the superiority and inferiority of intelligent substation communication network performance, the real-times such as substation relay protection and letter will have a direct impact on Cease the integrality of transmission.Lack the research optimized to intelligent substation communication network system, intelligent substation can not be effectively improved Network performance.

Utility model content

For the technical problems in the prior art, the utility model provides a kind of intelligent power transformation based on OPNET Network of standing improves the real-time performance of intelligent substation relay protection to basic intelligent substation optimization of network performance.

A kind of intelligent substation network, including switched LAN further include the domain DiffServ, the switch type local Net includes subnet and interchanger, is equipped with hub in subnet, and hub is connect with interchanger, and interchanger and the domain DiffServ connect It connects.

Further, the domain the DiffServ packet core heart router and edge router, edge router and core Router connection, interchanger are connect with edge router.

Further, the core router is multiple, is connected two-by-two between multiple cores router.

Further, the subnet includes feeder clearance subnet, bus interval subnet and transformer bay every subnet.

Further, the feeder clearance subnet includes hub and the breaker connecting with hub, MU IED, P& C IED。

Further, the bus interval subnet includes hub and the breaker connecting with hub, MU IED, P& C IED。

Further, the transformer bay every subnet include hub and the breaker being connect with hub, MU IED, P&C IED。

Further, the intelligent substation network further includes the station control host and server connecting with interchanger.

The utility model proposes the switched LANs of the hub composition based on DiffServ mechanism to intelligent substation Network performance optimizes, and improves the efficiency of transmission of network.

Detailed description of the invention

Fig. 1 is the switched LAN structural topology figure of hub composition；

Fig. 2 is DiffServ mechanism network topological diagram；

Fig. 3 is the structure chart of intelligent substation network；

The switched LAN feeder clearance sub-network structures schematic diagram that Fig. 4 is formed based on the hub of DiffServ mechanism；

The switched LAN bus interval sub-network structures schematic diagram that Fig. 5 is formed based on the hub of DiffServ mechanism；

Fig. 6 is illustrated based on the switched LAN transformer bay that the hub of DiffServ mechanism forms every sub-network structures Figure；

Wherein: 1- first edge router；The first interchanger of 2-；3- feeder clearance subnet；4- first stop control host；5- One server；The first core router of 6-；The second core router of 7-；8- second station control host；9- second server；10- becomes Depressor interval subnet；11- bus interval subnet；12- second switch；13- second edge router.

Specific embodiment

With reference to the accompanying drawings of the specification, the technical solution of the utility model is described further.

The utility model is directed to the real time problems of intelligent transformer substation information transmission, and proposing in terms of communication network will DiffServ mechanism is combined with the switched LAN that hub forms, and proposes the hub composition based on DiffServ mechanism The method of switched LAN substation network performance is optimized.

It is that can provide dedicated net based on conventional local area net for each node that hub, which forms switched LAN, Network connection.For the Switch Local Area Network topological diagram of hub composition as shown in Figure 1, subnet includes several hosts, number of host can It is set according to network actual conditions.It is connected with hub, hub is connected with center switch in each subnet.By Multiple parallel connections are established between network segment, and provide dedicated quite band for each independent network segment, are increased using switched LAN The throughput of transmissions of traditional network improves the advantages of transmission rate and hub (HUB) has that transmission delay is small, response speed The advantages that fast, improves COMMUNICATION NETWORK PERFORMANCES.

DiffServ DiffServ is that the data flow on a kind of pair of network divides priority, according to correlative factor The architecture of different level service is provided to different data streams.DiffServ mechanism network structure is as shown in Fig. 2, DiffServ Domain is the set being made of some adjacent DiffServ nodes；Edge router mainly realizes the classification of transmission and the tune of flow Section, saves the status information of data flow, the data flow in the into/out domain DiffServ is adjusted according to scheduled data flow specification, And DSCP (Differentiated Services Code Point) value is marked in packet header；Core router then realize one group or Several groups spikelets per panicle PHB (Per Hop Behavior) is forwarded according to the selected particular schedule of DSCP value.? In the domain DiffServ, forward node is carried out according to PHB, and maximum feature is to guarantee PHB behavior paragraph by paragraph in each span line, This is also the basis for guaranteeing end-to-end QoS.

By combining for DiffServ mechanism and hub composition switched LAN, as shown in Figure 1, DiffServ Domain includes core router and edge router, and core router can be multiple, and connect two-by-two, edge router and core Router connection.Interchanger in the switched LAN of hub composition is connected with the edge router in the domain DiffServ It connects, realizes that the information classification in information transmission is adjusted with flow, the quality of improve data transfer.

A kind of intelligent substation network, as shown in Fig. 3 to 6, the switch type office including the domain DiffServ and hub composition Domain net.The domain DiffServ includes two core routers and two edge routers, and core router is respectively the first core road By device 6 and the second core router 7, edge router is respectively first edge router 1 and second edge router 13.First Core router 6 is connected with the second core router 7, first edge router 1 and the connection of the first core router 6, the second side Edge router 13 and the connection of the second core router 7.

The domain DiffServ is connect with two switched LANs, respectively the first local area network and the second local area network, first game Domain net includes the first interchanger 2 and the first stop control host 4, first server 5 and several feeder lines that connect with the first interchanger 2 It is spaced subnet 3, the feeder clearance subnet 3 includes hub and the breaker, MU IED, the P&C IED that connect with hub, MU IED is combining unit IED, and P&C IED is protection control unit IED.Second local area network includes second switch 12 The second station control host 8 that is connected with second switch 12, second server 9, transformer bay are every subnet 10 and bus introns Net 11, the transformer bay include every subnet 10 include hub and the breaker being connect with hub, MU IED, P&C IED. The bus interval subnet includes hub and the breaker connecting with hub, MU IED, P&C IED.

The utility model proposes intelligent substation network compared with conventional substation, can effectively lower Ethernet delay, The validity and real-time for improving information transmission, effectively increase the efficiency of transmission of data.

Claims (8)

1. a kind of intelligent substation network, including switched LAN, it is characterised in that further include the domain DiffServ, the friendship The formula local area network of changing includes subnet and interchanger, and hub is equipped in subnet, and hub is connect with interchanger, interchanger and The connection of the domain DiffServ.

2. a kind of intelligent substation network according to claim 1, it is characterised in that the domain DiffServ includes core Heart router and edge router, edge router are connect with core router, and interchanger is connect with edge router.

3. a kind of intelligent substation network according to claim 2, it is characterised in that the core router be it is multiple, It is connected two-by-two between multiple cores router.

4. a kind of intelligent substation network according to claim 1, it is characterised in that the subnet includes feeder clearance Subnet (3), bus interval subnet (11) and transformer bay are every subnet (10).

5. a kind of intelligent substation network according to claim 4, it is characterised in that feeder clearance subnet (3) packet Include hub and the breaker connecting with hub, MU IED, P&C IED.

6. a kind of intelligent substation network according to claim 4, it is characterised in that the bus interval subnet (11) Including hub and the breaker being connect with hub, MU IED, P&C IED.

7. a kind of intelligent substation network according to claim 4, it is characterised in that the transformer bay is every subnet It (10) include hub and the breaker being connect with hub, MU IED, P&C IED.

8. a kind of intelligent substation network according to claim 1, it is characterised in that the intelligent substation network is also Including the station control host being connect with interchanger and server.