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System and method for synchronization of communication network and time in intelligent transformer substation

A smart substation, time synchronization technology, applied in time division multiplexing systems, synchronization devices, transmission systems, etc., can solve the uncertainty of Ethernet transmission and cannot meet the real-time communication requirements of smart substations, and the accuracy and reliability are easy to bring. Safety hazards, heavy operation and maintenance workload, etc., to achieve the effect of meeting real-time communication requirements, reducing operation and maintenance workload, and high-precision time synchronization requirements

Inactive Publication Date: 2014-03-05
GRID POWER PLANNING & RES CENT OF GUANGDONG GRID POWER CO LTD
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Problems solved by technology

[0004] 1. At present, the smart substation adopts Ethernet communication technology. When the network load is heavy, the uncertainty of Ethernet transmission cannot meet the real-time communication requirements of the smart substation.
[0005] 2. At present, the communication of smart substation adopts Ethernet physical isolation technology, which leads to a large number of switches and a large workload of operation and maintenance. It is urgent to optimize the allocation of communication resources
[0006] 3. At present, the smart substation adopts the GPS synchronous time synchronization method. Its accuracy and reliability are likely to bring safety hazards. There is an urgent need to adopt a higher-precision time synchronization method

Method used

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  • System and method for synchronization of communication network and time in intelligent transformer substation
  • System and method for synchronization of communication network and time in intelligent transformer substation
  • System and method for synchronization of communication network and time in intelligent transformer substation

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Embodiment Construction

[0023] figure 1 It is the information flow diagram of the smart substation, and its information exchange is explained as follows: ①, ②: protection data exchange between bay layer and substation layer; ③, ④: TV and TA transient data exchange between process layer and bay layer; ⑤: Control and protection data exchange within bay level; ⑥: Control and protection data exchange between bay levels; ⑦: Data exchange between substation level and remote engineering station; ⑧: Direct data exchange between substation levels; ⑨: Data exchange within substation; ⑩: Control data exchange between substation devices and remote control centers.

[0024] Its information flow characteristics are as follows:

[0025] 1. SV data is characterized by large traffic, and multicast from primary equipment to secondary equipment has high synchronization and real-time requirements.

[0026] 2. GOOSE data is mainly concentrated in the interval layer and process layer. The amount of data is small, but it...

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Abstract

The invention relates to a system for synchronization of a communication network and time in an intelligent transformer substation. The intelligent transformer substation is of a system structure comprising a transformer substation layer, a partition layer, a process layer, an MMS network and an SV (or GOOSE) network. The system is characterized in that the MMS network and the SV or GOOSE network both utilize the PTN equipment network, and logic insulation of each interval is achieved through an MPLS VPN; as for clock synchronization, PTN equipment provides high-accuracy time synchronization signals like IEEE1588. The invention further relates to a method for synchronization of the communication network and time in the intelligent transformer substation. According to the system and method, communication resource configuration is optimized, network performance is improved, the time synchronization requirement for high accuracy is provided, and integration of the communication network and a time synchronization platform is achieved.

Description

technical field [0001] The invention relates to a system for in-station communication networking and time synchronization in an intelligent substation. The invention also relates to a method for using the system to perform communication networking and time synchronization in an intelligent substation. Background technique [0002] Smart substation is to make full use of advanced computer technology, communication technology and control technology, adopt intelligent primary and secondary equipment, standardized communication platform and interface specification, and integrated interactive automation system to automatically complete information collection, measurement, control and protection. It realizes the comprehensive collection, local processing and real-time sharing of power grid operation data, and supports advanced functions such as real-time automatic control of power grid, intelligent adjustment, online analysis and decision-making, and collaborative interaction. It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L7/00H04J3/06
Inventor 章晋龙
Owner GRID POWER PLANNING & RES CENT OF GUANGDONG GRID POWER CO LTD
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