Influence of Digital Acquisition of the Electrical Information on the Reliability of Relay Protection

He Rui-wen; Xie Qiong-xiang; Cai Ze-xiang

doi:10.3969/j.issn.1007-7162.2013.02.013

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Influence of Digital Acquisition of the Electrical Information on the Reliability of Relay Protection

更新时间：2026-05-27

- Influence of Digital Acquisition of the Electrical Information on the Reliability of Relay Protection
- Vol. 30, Issue 2, Pages: 68-73(2013)
- 作者机构：
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- DOI：10.3969/j.issn.1007-7162.2013.02.013
  CLC：
- Online First：27 June 2013，
  
  Published：2013
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何瑞文, 谢琼香, 蔡泽祥. 数字化电气信息采集对继电保护可靠性的影响[J]. 广东工业大学学报, 2013, 30(2): 68-73.

He Rui-wen, Xie Qiong-xiang, Cai Ze-xiang. Influence of Digital Acquisition of the Electrical Information on the Reliability of Relay Protection[J]. 2013, 30(2): 68-73.
何瑞文, 谢琼香, 蔡泽祥. 数字化电气信息采集对继电保护可靠性的影响[J]. 广东工业大学学报, 2013, 30(2): 68-73. DOI： 10.3969/j.issn.1007-7162.2013.02.013.

He Rui-wen, Xie Qiong-xiang, Cai Ze-xiang. Influence of Digital Acquisition of the Electrical Information on the Reliability of Relay Protection[J]. 2013, 30(2): 68-73. DOI： 10.3969/j.issn.1007-7162.2013.02.013.

摘要

数字化电气信息采集为数字化变电站乃至智能电网信息化提供直接支撑.针对电子式互感器和合并单元的特点，给出数字化电气信息采集系统的功能模块.从互感器结构、数字传输、数据验证、采样频率和系统配置方面，分析数字化电气信息采集对继电保护可靠性的影响，着重说明了数据同步对差动保护的影响.指出由于存在电子式互感器的稳定性以及网络通讯可依赖性问题，目前数字化变电站继电保护系统在很大程度上仍沿用传统保护的设计思路，有待进行深入研究和突破.

Abstract

The digital acquisition of electrical information provides direct support for the digital substation and even the smart grid. Regarding the characteristics of electronic transformers and merging units

the function module of digital electrical information acquisition is proposed. The influence of the digital acquisition of electrical information on the reliability of relay protection was analyzed from the perspectives of transformer structure

digital transmission

data validation

sampling frequency and system configuration. Moreover

the impact of data synchronization on differential protection was researched. It points out that currently the traditional designing ideas about protection are still mostly adopted in the digital substation relay protection system for the stability of the electronic transformer and the dependency of network communications

and that in-depth research and breakthroughs need to be conducted.

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