The data transmission method can realize high-precision time synchronization

A data transmission method and time synchronization technology, applied in time division multiplexing systems, electrical components, multiplexing communications, etc., can solve problems such as large area faults and inconsistent power time

Inactive Publication Date: 2020-04-21
JINZHOU ELECTRIC POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

To solve the problem of large-area faults caused by power inconsistency

Method used

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  • The data transmission method can realize high-precision time synchronization
  • The data transmission method can realize high-precision time synchronization
  • The data transmission method can realize high-precision time synchronization

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Experimental program
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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the specific embodiments of the accompanying drawings.

[0033] Step 1: Construct an improved cluster average clock synchronization method, apply the ACATS algorithm to a relatively simple sensor network composed of 3 nodes to illustrate, the transmitter broadcasts a synchronization beacon to 3 nodes, assuming the node able to estimate their relative phase offset, and their synchronization time flow as figure 1 As shown, the specific process is described as follows:

[0034] Step 1.1: Transmitter to 3 nodes V i , V j , V k Broadcast a synchronization beacon, and each node records the local time t when it received the beacon i ,t j ,t k :

[0035] Step 1.2: Node V i send to node V j — a packet containing t i information, when node V j When receiving this packet, node V k Also listen to this packet;

[0036] Step 1.3: Then, node V j send to node V k — a packet containing t j informat...

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Abstract

The invention discloses a data transmission method capable of realizing high-precision time synchronization, and aims to solve the problem of large-area faults caused by non-uniform time of electric power. The method comprises the following steps: constructing an improved cluster average clock synchronization method; supposing that the time for sending and receiving the information by the node isthe same and is a fixed value, setting the fixed value as d, broadcasting a synchronous beacon to all parts in the cluster by a transmitter in the cluster, and recording the local time for receiving the beacon by the parts; global average clock synchronization is realized through cluster averaging; a cluster average clock synchronization algorithm considering phase bias, frequency drift and randomtime delay; convergence analysis is carried out on the algorithm, so that the sensor network can gradually reach an average clock synchronization state through the algorithm.

Description

technical field [0001] The present invention relates to the technical field of power system cross-section, and realizes relatively standard "off-site replication" of received signals and information, calibrates the local time, and provides a good environment for the operation of related equipment, instruments and systems. Background technique [0002] As an important part and key link of smart grid, smart substation is an important foundation and support for building smart grid. With the rapid development of power systems, the requirements for time synchronization of smart devices in smart substations are increasingly urgent. The clock synchronization system is an important basis and support for the measurement, control and protection of smart substations, and its accuracy will directly affect the control accuracy and performance of smart substations. Contents of the invention [0003] The purpose of the present invention is to solve the problem of time synchronization be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06
CPCH04J3/0638
Inventor 崔吉生王强刘云松王顺江魏凯邱鹏孟镇赵琰王健葛维春刘前卫常乃超葛延峰刘金波王永福胡博苏安龙陈晓东高凯句荣滨周桂平陈蓉金鹏王东来姜河高明刘子阳
Owner JINZHOU ELECTRIC POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY
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