Networking method of inter-station communication under hybrid multi-terminal direct-current topology

Abstract

The invention relates to a networking method of inter-station communication under hybrid multi-terminal direct-current topology and a communication monitoring mechanism generated corresponding to the method. According to the method, SDH / MSTP equipment in stations is adopted as intermediate connection equipment for realizing inter-station communication equipment interconnection, so that Ethernet private network business can be used; a connection mode according to which in-station control protection devices are connected into switches through a 100M Ethernet so as to be networked is adopted; and the SDH / MSTP equipment is connected into an SDH network. The function of the inter-station communication is to exchange control instructions and operating state information between a traditional current source converter station and a voltage source type converter station; the inter-station communication adopts a double-network mutually standby connection mode; a plurality of stations composed of the hybrid topology adopt a point-to-point connection mode; any one station can obtain the connection channels of the other stations; the connection channels are optical fiber channels; and optical cables are laid along underground cables or submarine cables between each stations.

Description

technical field

[0001] The invention belongs to the field of direct current transmission, and in particular relates to a networking method for inter-station communication under a hybrid multi-terminal direct current topology. Background technique

[0002] Flexible DC transmission uses voltage source converters, which can independently adjust the transmission of active and reactive power, improve the transmission capacity of the AC system, and easily form a multi-terminal DC transmission system. And other application fields, have obvious competitiveness.

[0003] The hybrid multi-terminal DC topology and the laying of optical cables along with the DC cables are as follows: figure 1 As shown, taking four stations as an example, for the multi-station communication of hybrid DC, high-speed communication between any two stations is required without adding additional communication equipment in the substation.

[0004] For the topology of DC converter stations at both ends, one m...

Examples

Embodiment Construction

[0023] Under a hybrid multi-terminal DC topology ( figure 1 ) The networking method of inter-station communication, such as image 3 As shown, two switches are set up at each station to form A and B networks respectively. A, B network switch and pole control protection A set and pole control protection B set adopt cross-connection mode, A and B networks adopt exactly the same connection method, and any set of pole control protection hosts can receive data from A and B networks at the same time , but only one of the network data is used, and the other network data is used as a backup. The switch itself has no effective data switching mechanism and directly forwards the received data. The extreme control and protection host realizes high-speed optical fiber Ethernet communication and monitoring between hosts through optical communication boards. The selection of A and B network data is realized by the internal logic of the host, and the setting principles are as follows:

[00...

technical field

[0001] The invention belongs to the field of direct current transmission, and in particular relates to a networking method for inter-station communication under a hybrid multi-terminal direct current topology. Background technique

[0002] Flexible DC transmission uses voltage source converters, which can independently adjust the transmission of active and reactive power, improve the transmission capacity of the AC system, and easily form a multi-terminal DC transmission system. And other application fields, have obvious competitiveness.

[0003] The hybrid multi-terminal DC topology and the laying of optical cables along with the DC cables are as follows: figure 1 As shown, taking four stations as an example, for the multi-station communication of hybrid DC, high-speed communication between any two stations is required without adding additional communication equipment in the substation.

[0004] For the topology of DC converter stations at both ends, one m...

Examples

Embodiment Construction

[0023] Under a hybrid multi-terminal DC topology ( figure 1 ) The networking method of inter-station communication, such as image 3 As shown, two switches are set up at each station to form A and B networks respectively. A, B network switch and pole control protection A set and pole control protection B set adopt cross-connection mode, A and B networks adopt exactly the same connection method, and any set of pole control protection hosts can receive data from A and B networks at the same time , but only one of the network data is used, and the other network data is used as a backup. The switch itself has no effective data switching mechanism and directly forwards the received data. The extreme control and protection host realizes high-speed optical fiber Ethernet communication and monitoring between hosts through optical communication boards. The selection of A and B network data is realized by the internal logic of the host, and the setting principles are as follows:

[00...

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