多采样频率合并单元设计与实现  

Design and Implementation of Multi-sampling-frequency Merging Unit

作　　者：刘鹏[1] 刘东超[1] 邓劲东 胡桂平[1] 卢为[1] LIU Peng;LIU Dongchao;DENG Jindong;HU Guiping;LU Wei(NR Electric Co.,Ltd.,Nanjing 211102,China)

机构地区：[1]南京南瑞继保电气有限公司,江苏南京211102

出　　处：《电工技术》2024年第16期121-123,127,共4页Electric Engineering

摘　　要：国内智能变电站推广使用的合并单元装置普遍采用4 kHz采样频率,可以满足间隔层保护测控的需求;电能质量或PMU等对采样频率有更高的要求,通常要求12.8 kHz或者更高频率。对此,提出一种共口传输多采样频率数据的方案,采用一个合并单元装置满足变电站不同专业的采样需求。测试表明,该方案适用于组网方式,对于帧间隔及延时要求不高的场合,减少了采集装置数量,提高了采样数据的共享性。Merging units widely used in domestic smart substations generally adopt a sampling frequency of 4 kHz,which can meet the needs of bay level protection and measurement.Sampling frequencies of 12.8 kHz or higher are also needed owing to monitoring scenarios such as power quality or PMU.This paper proposes a scheme for transmitting multisampling-frequency data through a single port by using one merging unit device to meet the needs of different sampling scenarios of substations.Tests have shown that the proposed scheme is suitable for networking system with low requirements for frame spacing and delay,and facilitates reduction of sampling devices,and improvement of sampling data sharing.

关 键 词：多采样频率 共口输出 数据共享 

分 类 号：TM93[电气工程—电力电子与电力传动]