Method for synchronously receiving and processing real-time data under dual-network redundancy mechanism

A technology of real-time data and synchronous processing, applied in data exchange networks, digital transmission systems, electrical components, etc., to achieve wide application prospects, low operating costs, and timely acquisition.

Active Publication Date: 2012-12-19
南京国电南自轨道交通工程有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the above substation automation system dual-network real-time data receiving and pro

Method used

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  • Method for synchronously receiving and processing real-time data under dual-network redundancy mechanism
  • Method for synchronously receiving and processing real-time data under dual-network redundancy mechanism

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[0012] 1. For real-time status data such as remote signaling, telemetry, and remote pulse, the dynamic priority selection with time limit between network segments is used to achieve effective data selection. Reference attached figure 1 , Under normal working conditions, the station control layer will receive the real-time status data sent by the device from the two normal communication network segments at the same time. At this time, the receiving processing module can randomly set a normal communication network segment as the highest priority at the initial stage, and only The real-time status data sent by this network segment is processed, and the real-time status data sent by other network segments is not considered for the time being, and is ignored directly; If no data is successfully uploaded within the time limit T1 (the preset time limit T1 can be determined according to the real-time data refresh interval T2 under the normal communication condition of the actual devic...

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Abstract

The invention relates to a method for synchronously receiving and processing real-time data under a dual-network redundancy mechanism. According to the real-time data transmission requirements and characteristics of dual-network redundancy mechanism of an automatic system of a transformer substation, a network segment inter-zone time limit dynamic priority selection strategy, a network segment automatic handoff trigger active summoning strategy and an event list cache comparing strategy to realize screening and synchronization of the dual-network real-time uploaded data to guarantee the receiving and processing of the station level and ensure that the station level can timely acquire the effective data without losing, and effectively screen and separate the redundant, repeated and even abnormal uploaded data.

Description

technical field [0001] The invention belongs to the technical field of power system automation, and relates to a method for synchronous processing of real-time data reception under a dual network redundancy mechanism. Background technique [0002] At present, the conventional transmission protocol of substations is the IEC 60870-5-103 protocol. The device side (substation) supports the active uploading of changing status data and event data, and sends all status data periodically and supports the station control layer (master station). General call all status data and other functions; when dual-network redundant communication is configured, the device side (slave station) usually establishes a TCP connection with the station control layer (master station) on both network segments, and all uploaded data is also The above two TCP connections are sent to (master station) respectively, that is, communication reliability is ensured through communication link redundancy and data r...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L12/56H02J13/00
Inventor 李鹏范三龙
Owner 南京国电南自轨道交通工程有限公司
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