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Sampling value transmission system and transmission method applied to wide-area protection

A wide-area protection and transmission method technology, which is applied in the field of power system relay protection, can solve problems such as difficult synchronization and large transmission flow of sampling values, and achieve the effect of reducing communication bandwidth requirements and reducing construction costs

Inactive Publication Date: 2014-07-02
XJ ELECTRIC +3
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a sampling value transmission system applied to wide-area protection to solve the problem of large transmission flow and difficult synchronization of wide-area protection sampling values ​​in intelligent substations, and to provide a transmission method using the transmission system

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  • Sampling value transmission system and transmission method applied to wide-area protection
  • Sampling value transmission system and transmission method applied to wide-area protection

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Embodiment Construction

[0020] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0021] like figure 1 Shown is the structural schematic diagram of the embodiment of the sampling value transmission system applied to wide-area protection of the present invention. It can be seen from the figure that the system includes a group of station domains for communication connection with the process-level equipment of each substation through the corresponding process-level network The protection control device, each station domain protection control device communicates with the wide area protection control device through the inter-station communication network; the station domain protection control device includes a data acquisition and processing unit for connecting with the substation process layer equipment and a Data forwarding module for control device communication, such as figure 2 shown.

[0022] In addition, the station do...

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Abstract

The invention discloses a sampling value transmission system and a transmission method applied to wide-area protection. The system is composed of a combination unit, a substation-area protection control device, a wide-area protection control device and other devices in a matched mode. Substation-area protection serves as a substation end service unit for sampling value transmission, substation-area protection achieves receiving, screening and point processing internally of transformer substation data and meanwhile receives a synchronization command of wide-area protection, serial numbers of samples are marked through time of wide-area protection, and the serial numbers are sent to a wide-area protection device through an interstation communication network. Wide-area protection carries out alignment processing according to time serial numbers of sampling value messages, the data synchronization function of different substations and at different intervals is achieved, and the problems that flow of sampling values of wide-area protection is large and synchronization is not easy to achieve are solved.

Description

technical field [0001] The invention belongs to the field of electric power system relay protection, and in particular relates to a sampling value transmission system and a transmission method applied to wide-area protection. Background technique [0002] The power system itself is a wide-area and dynamic system, and its own morphological characteristics determine that the relevant monitoring, control, protection and analysis technologies of the power system have wide-area and global characteristics. Due to the limitation of traditional technology, the current substation protection and control system cannot meet the requirements of the continuously developing large power grid and new energy access in terms of efficiency, reliability and integration in terms of the entire system architecture and function combination. The proposal of the wide-area protection and control system improves the self-adaptive ability of substation protection, improves the performance of existing rel...

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Application Information

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IPC IPC(8): H04L7/00H02H7/26
Inventor 刘永欣陶永健胡彦民李栋
Owner XJ ELECTRIC
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