CN202385129U

CN202385129U - Communication module in direct-current power-transmission projects

Info

Publication number: CN202385129U
Application number: CN2011205154309U
Authority: CN
Inventors: 吴述超; 王柏恒; 李国杰
Original assignee: Xuji Group Co Ltd; XJ Electric Co Ltd
Current assignee: Xuji Group Co Ltd; XJ Electric Co Ltd
Priority date: 2011-12-12
Filing date: 2011-12-12
Publication date: 2012-08-15
Anticipated expiration: 2021-12-12

Abstract

The utility model relates to a communication module in direct-current power-transmission projects. The communication module comprises a processor, a field bus interface module and a VME (virtual machine environment) bus interface module, wherein the field bus interface module and the VME bus interface module are connected with the processor, the field bus interface module comprises CAN (controller area network) bus interfaces and Profibus DP (decentralized periphery) bus interfaces and is used for being connected with field equipment using the same communication protocols, the VME bus interface module comprises a VME interface circuit and a driving circuit, and the processor is used for being connected with a main CPU (central processing unit) in a control level by the VME interface circuit and the driving circuit. Additionally, a dual-redundancy configuration function of second-level equipment and third-level equipment in a direct-current power-transmission control and protection system can be achieved by the processor. The communication module in the direct-current power-transmission projects can be connected with the field equipment with different field bus protocols, accordingly switching of the different field bus protocols can be realized, and meanwhile the dual-redundancy configuration function of the second-level equipment and the third-level equipment in the direct-current power-transmission control and protection system can be achieved.

Description

Communication module in a kind of DC transmission engineering

Technical field

The utility model relates to the communication module in a kind of DC transmission engineering.

Background technology

The control protection system of DC converter station is the system that is linked together mutually through local area network (LAN), fieldbus and other interface by numerous Different control protection equipment.The DC control protection system generally is divided into three levels; Comprise operations staff's key-course (Operator Control Level), control protection mechanical floor (Control & Protection Level) and scene equipment level (Field Level) etc., as shown in Figure 1.Adopt station local area network (LAN) (Station LAN) between first and second layers of equipment of DC control protection system, second and three-layer equipment between adopt fieldbus (Fieldbus).The communication mode of fieldbus has: Profibus DP, CAN and TDM.The communication protocol of the field bus communication object between existing direct-current power transmission control protection system second and the 3rd layer must be identical; If promptly the equipment of the second layer is Profibus DP agreement; Then the three-layer equipment of communication also must be a Profibus DP agreement with it, otherwise this just can't proper communication between two-layer.

The utility model content

The purpose of the utility model is the problem that the communication protocol that solves the field bus communication object between existing direct-current power transmission control protection system second and the 3rd layer simultaneously can't proper communication.

The utility model is to solve the problems of the technologies described above the communication module that provides in a kind of DC transmission engineering; Comprise processor and the field-bus interface module and the VME bus interface module that are attached thereto; Described field-bus interface module comprises CAN EBI and Profibus DP EBI; Be used for linking to each other with the field apparatus that uses the respective communication agreement; Described VME bus interface module comprises VME interface circuit and drive circuit, and processor links to each other with the VME interface circuit through DPRAM, and the VME interface circuit is used for linking to each other with the primary processor of key-course through drive circuit.

Described CAN EBI comprises CAN communication interface and isolation drive chip; Processor links to each other with the CAN communication interface through the isolation drive chip; Described Profibus DP Bus Interface Unit comprises Profibus DP passage, and processor is realized communicating by letter through Profibus DP passage and Profibus DP communication interface.

Described CAN EBI and Profibus DP EBI all are at least two-way separately, and the communication channel that processor can be realized two the same communications protocols through configuration is redundant each other to be used to be connected to two redundant each other scene equipment level.

Described CAN communication interface is realized linking to each other with processor through the isolation drive chip, and Profibus DP communication interface links to each other with processor through DPRAM.

Described CAN communication protocol realizes that through processor Profibus DP communication protocol adopts private communication protocol module Profibus DP passage to realize that processor is mutual through DPRAM and Profibus DP passage.

Described VME interface circuit is a fpga chip.

Be connected with the LED equipment that is used for showing communication state and fault message on the described processor.

The beneficial effect of the utility model is: the communication module in this DC transmission engineering comprises processor and the field-bus interface module that is attached thereto; The field apparatus that can connect different field bus protocols; Realize the conversion of multiple field bus protocol, can realize two redundant configuration functions of direct-current power transmission control protection system second layer equipment and three-layer equipment simultaneously.

Description of drawings

Fig. 1 is the direct-current power transmission control protection system structure chart;

Fig. 2 is existing two kinds of redundant fashion schematic diagrams in the DC transmission engineering;

Fig. 3 is the communication module redundant fashion schematic diagram in the utility model DC transmission engineering;

Fig. 4 is the structure chart of the communication module in the utility model DC transmission engineering.

Embodiment

Below in conjunction with accompanying drawing the utility model is done further detailed explanation.

As shown in Figure 4; This communication module comprises processor and is attached thereto two-way Profibus DP communication interface, two-way CAN communication interface and one road VME communication interface that connects; Wherein processor is selected the XE167 of infineon company for use; The VME interface is selected the XC3S200A programmable logic device of the Spartan-3A of xilinx company series for use; The private communication protocol module is adopted in the realization of Profibus DP communication protocol, and CAN communication protocol is realized that by XE167 processor CPU XE167 carries out data interaction through DPRAM and Profibus DP; The mode of DPRAM is also adopted in the data interaction of processor and VME interface chip FPGA; The signal transmission is designed with drive circuit between VME interface chip FPGA and the VME bus, 9 pin D-sub connectors of the physical interface selection standard of Profibus DP, and the physical interface of CAN communication is selected the double contact pin connector of 6 pins for use; The 5V of this communication module, 3.3V power supply are provided by the VME bus, and the 1.2V power supply that 1.5V that processor cores needs and FPGA kernel need all will be changed by 3.3V.

Processor is through after programming; In the conversion while that can realize between Profibus DP communications protocol and the CAN communications protocol; Also have the redundant configuration function, can realize that being connected with two redundant of equipment and different field-bus interfaces protected in the control in the direct-current power transmission control protection system.But its redundancy feature flexible configuration may be selected to be two communication ports redundant fashion or independent communication channel mode each other, is configured to each other under the redundant fashion condition, can realize two redundancy features between two control system, and two redundant principles are as shown in Figure 3.If communication transfer interface module is opened two redundancy features; The communication port of two same protocol of module is redundant each other; Be connected respectively to two redundant each other field layer equipment, be set to main (Active) equipment and stand-by heat (Hot Stand-by) equipment respectively, processor is handled the two-way field layer data that receive; The valid data of Active equipment are delivered to host CPU, and the data of Hot Stand-by equipment are sent on no longer; When the Active equipment fault, module automatically switches to Hot Stand-by equipment, with the state exchange of two equipment; Make former Hot Stand-by equipment become Active equipment; And with the data of this equipment as giving on the valid data, if close two redundancy features, the communication port of two same protocol of module works alone; Be connected respectively to two field layer equipment, receive the data of distinct device and two paths of data is delivered to host CPU on all.

Claims

1. the communication module in the DC transmission engineering; It is characterized in that: this communication module comprises processor and the field-bus interface module and the VME bus interface module that are attached thereto; Described field-bus interface module comprises CAN EBI and Profibus DP EBI; Be used for linking to each other with the field apparatus that uses the respective communication agreement; Described VME bus interface module comprises VME interface circuit and drive circuit, and processor links to each other with the VME interface circuit through DPRAM, and the VME interface circuit is used for linking to each other with the primary processor of key-course through drive circuit.

2. the communication module in the DC transmission engineering according to claim 1; It is characterized in that: described CAN EBI comprises CAN communication interface and isolation drive chip; Processor links to each other with the CAN communication interface through the isolation drive chip; Described Profibus DP Bus Interface Unit comprises Profibus DP passage, and processor is realized communicating by letter through Profibus DP passage and Profibus DP communication interface.

3. the communication module in the DC transmission engineering according to claim 2; It is characterized in that: described CAN EBI and Profibus DP EBI all are at least two-way separately, and the communication channel that processor can be realized two the same communications protocols through configuration is redundant each other to be used to be connected to two redundant each other scene equipment level.

4. according to the communication module in claim 1, the 2 or 3 described DC transmission engineerings, it is characterized in that: described CAN communication interface is realized linking to each other with processor through the isolation drive chip, and Profibus DP communication interface links to each other with processor through DPRAM.

5. according to the communication module in claim 1, the 2 or 3 described DC transmission engineerings; It is characterized in that: described CAN communication protocol realizes through processor; Profibus DP communication protocol adopts private communication protocol module Profibus DP passage to realize that processor is mutual through DPRAM and Profibus DP passage.

6. according to the communication module in claim 1, the 2 or 3 described DC transmission engineerings, it is characterized in that: described VME interface circuit is a fpga chip.

7. according to the communication module in claim 1, the 2 or 3 described DC transmission engineerings, it is characterized in that: be connected with the LED equipment that is used for showing communication state and fault message on the described processor.