Unlock instant, AI-driven research and patent intelligence for your innovation.

Direct-current inter-station communication switching method

A technology of inter-station communication and communication port, which is applied in the field of DC inter-station communication switching, which can solve the problems of reduced overall communication reliability, many inter-station communication interfaces of the DC control system, and many occupied SDH channels.

Inactive Publication Date: 2017-01-11
NR ELECTRIC CO LTD +1
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is suitable for double-terminal DC, but for multi-terminal DC, if the above-mentioned point-to-point communication method is still used, the DC control system requires more inter-station communication interfaces and occupies more SDH channels, the overall reliability of communication is reduced, and expansion is inconvenient

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Direct-current inter-station communication switching method
  • Direct-current inter-station communication switching method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0017] Such as figure 1 As shown, the present invention provides a communication switching method between DC stations, including the following steps:

[0018] Step S100: the DC control system connects to the communication transmission equipment through the communication switching module, and realizes inter-station communication through the power communication transmission network;

[0019] Here, the DC control system is connected to two communication switching modules through independent Ethernet communication ports, such as figure 1 As shown, each DC control system has 2 inter-station Ethernet communication ports, which are respectively connected to 2 communication switching modules.

[0020] Each communication switching module is connected with communication transmission equipment through an Ethernet communication port. For the widely ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a direct-current inter-station communication switching method. The direct-current inter-station communication switching method comprises the following steps: a direct-current control system is connected to communication transmission equipment through a communication switching module; inter-station communication is realized through a power communication transmission network; the direct-current control system sends an ACTIVE mark representing an on-duty or standby operation state and information needing to be switched between stations to the communication switching module in the form of an Ethernet message; and the communication switching module selectively sends the Ethernet message of an on-duty system to the communication transmission equipment according to the ACTIVE mark in the Ethernet message, and sends the Ethernet message to other convertor stations through the power communication transmission network. By means of the Ethernet communication switching method, design of the communication system can be simplified; two-end direct-current and multi-end direct-current coordinative control requirements are satisfied; and thus, the direct-current inter-station communication switching method is suitable for development of a wide-area communication technology.

Description

technical field [0001] The invention belongs to the field of DC power transmission, and in particular relates to a communication switching method between DC stations. Background technique [0002] In the DC transmission system, the converter stations work in two modes of rectification and inverter respectively. The DC control systems responsible for the functions of rectification and inverter control need to exchange information and coordinate control in real time, which requires able to communicate. Because the physical locations of the converter stations are far apart, the communication between stations is usually realized through the power communication transmission network. In terms of redundancy, DC transmission generally has two sets of control systems with the same configuration and independent operation, one is on duty and the other is on standby. In order to reduce the number of inter-station communication channels and reduce project investment, it is only necessa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L12/28H04L12/703H04L45/28
CPCH04L12/2801H04L45/28H04L67/12H04L12/28
Inventor 周强黄志岭袁明李响文继锋袁涛周谷庆
Owner NR ELECTRIC CO LTD