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DDS communication method in distribution network field

A communication method, technology of power distribution network, applied in electrical components, error prevention/detection using return channel, transmission system, etc., can solve problems such as slow transmission speed, achieve high performance, improve transmission efficiency, and increase flexibility. Effect

Active Publication Date: 2015-11-18
STATE GRID SHANDONG ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that in the DDS communication in the prior art, only one data topic can be transmitted at a time, resulting in a relatively slow transmission speed, so as to provide a power distribution system that can transmit any number of specific data topics at one time. Network Domain DDS Communication Method

Method used

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  • DDS communication method in distribution network field
  • DDS communication method in distribution network field
  • DDS communication method in distribution network field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The DDS communication method in the distribution network field of the present invention, such as figure 2 shown, including the following steps:

[0040] (1) Establish data publishers and subscribers:

[0041] Create the publisher of the published object by generating the publish module create_publisher() interface, which has the function of writing data;

[0042] Create the subscriber of the subscription object through the create_subscriber() interface of the subscription module, which has the function of reading data.

[0043] (2) Establish and configure the data subject:

[0044]The subscriber sends the required data type to the data topic generation module create_topic () interface, and the data topic generation module create_topic () interface establishes a data topic for the publisher according to the data type required by the subscriber, and the data topic The types include telemetry MVTDiscreteValue, telemetry MVTAnalogValue, telemetry sequence MVSTDiscreteVa...

Embodiment 2

[0050] On the basis of the DDS communication method in the distribution network field described in Embodiment 1, the telemetry is used to transmit the amount of data detected by the line; the telemetry refers to the position signal used to transmit the switch and the action signal of the protection device The amount of data; the telemetry sequence is used to transmit any number of telemetry at one time;

[0051] Such as image 3 As shown, the issuer is FTU / DTU, FTU (FeederTerminalUnit), feeder terminal equipment, FTU is a switch monitoring device installed next to the feeder switch, these feeder switches refer to outdoor pole switches, such as on 10kV lines Circuit breakers, load switches, section switches, etc. FTU monitors the switch on the column and transmits the operation data in real time. DTU (DataTerminalunit), switching station terminal equipment, DTU is generally installed in conventional switching stations, outdoor small switching stations, ring network cabinets, ...

Embodiment 3

[0055] On the basis of the DDS communication method in the distribution network field described in the above embodiments, as Figure 4 As shown, it also includes setting the communication control parameter QoS of the data topic through the XML file. This QoS parameter is defined in the XMLSchema. To add / remove a certain QoS parameter, you only need to add / delete the parameter in the XMLSchema. Configuration flexibility.

[0056] For example, the topic's quality of service control parameter topic_qos is used to control data reliability, storage time, etc., and consists of several specific parameters. The parameter DEADLINE indicates the data update frequency. Assuming that the publisher sets this parameter to 5 seconds, it means that it updates the data every 5 seconds and publishes it to the outside world. If the subscriber sets this parameter to 3 seconds, it means that its requirement for data update frequency is every Update once every 3 seconds, and the issuer cannot meet...

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PUM

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Abstract

The invention relates to a method for DDS communication in the field of power distribution networks. The method comprises the steps of first generating an issuing party and a subscription party, enabling the subscription party to send needed data types to a data theme generation module, enabling the data theme generation module to establish a data theme for the issuing party according to the data types needed by the subscription party, enabling data theme types to comprise telemetering, telecommand, a telemetering sequence and a telecommand sequence, and when the subscription party needs a single datum in one time, establishing a telemetering or telecommand data theme for the issuing party; and when the subscription party needs a plurality of data in one time, establishing a telemetering sequence or telecommand sequence data theme for the issuing party. Not only does a subscription mode improve transmission efficiency, but also the subscription party can subscribe all telemetering of some line in one time and can also specific telemetering of all lines in one time so as to compare maximum values, flexibility is improved for a transmission mode, and the problem that in the prior art, only one datum can be transmitted in one time, so that the transmission is slow and the efficiency is low is solved.

Description

technical field [0001] The invention relates to a communication method, in particular to a DDS communication method in the distribution network field, and belongs to the technical field of communication. Background technique [0002] Data Distribution Service (Data Distribution Service, DDS) is a new specification for data publishing in distributed real-time systems promulgated by the Object Management Group (OMG). A data-centric publish-subscribe (Data-Centric Publish-Subscribe, DCPS) mechanism is proposed, and a platform-independent data model is provided. It allows applications to publish the information they have in real time and subscribe to the information they need, and it better handles the problems of automatic discovery, reliability and redundancy of data in unreliable network communication. The goal of DDS is to facilitate the efficient and reliable distribution of data in distributed systems. [0003] "A DDS Communication System" based on DDS China Invention Pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L29/06H04L1/18
Inventor 张宏伟赵生传崔潇于强董啸贾旭齐蔚海郭英雷李延真毕建鑫郭建豪田振业宋佳王德东
Owner STATE GRID SHANDONG ELECTRIC POWER