Calibration System of Electronic Transformers with Digital Output Based on the Routed Sample Clock

SONG Tao

doi:10.13296/j.1001-1609.hva.2013.09.007

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Calibration System of Electronic Transformers with Digital Output Based on the Routed Sample Clock

更新时间：2025-04-26

- Calibration System of Electronic Transformers with Digital Output Based on the Routed Sample Clock
- High VoltageApparatus Vol. 49, Issue 9, Pages: 19-22+27(2013)
- 作者机构：
  
  1. 淄博职业学院电子电气工程学院
  2. 华中科技大学电气与电子工程学院
  3. 淄博职业学院电子电气工程学院华中科技大学电气与电子工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2013.09.007
  CLC： TM45
- Published：2013
- 稿件说明：
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[1]宋涛.基于路由采样时基同步的电子式互感器数字输出校验方法[J].高压电器,2013,49(09):19-22+27.

SONG Tao. Calibration System of Electronic Transformers with Digital Output Based on the Routed Sample Clock[J]. High voltageapparatus, 2013, 49(9): 19-22+27.
[1]宋涛.基于路由采样时基同步的电子式互感器数字输出校验方法[J].高压电器,2013,49(09):19-22+27. DOI： 10.13296/j.1001-1609.hva.2013.09.007.

SONG Tao. Calibration System of Electronic Transformers with Digital Output Based on the Routed Sample Clock[J]. High voltageapparatus, 2013, 49(9): 19-22+27. DOI： 10.13296/j.1001-1609.hva.2013.09.007.

摘要

随着智能电网的建设

对数字化变电站内统一时钟的要求越来越高

而不同的同步源对电子式互感器校验准确度的影响也不相同。另外

标准通道模拟信号的高精度数字化采样及合并单元的数据帧捕获也是影响电子式互感器数字输出校验系统精度的关键因素

而目前的研究并没有充分考虑到这些因素。故笔者提出了一种基于路由采样时基同步的电子式互感器数字输出校验方法。该办法采用24位A/D转换器保证了标准通道采集单元的高精度和宽动态范围且路由采样时基的新颖同步方法将同步误差控制在纳秒级。系统校准验证了该办法的有效性

现场实际校验证明该系统可靠性强、精度高、易操作。

Abstract

Calibration system with digital output is realized by construction of standard channel

digital processing of standard channel

receiving the digital output of MU synchronous.But these factors are not fully considered in current researches.So a calibration system with digital output is proposed in this paper.Precision and dynamic range are guaranteed by A/D converter with 24 resolution and synchronization error limit is nanosecond by using the novelty synchronization method based on the routed sample clock.To verify effectiveness

error calibration was carried out in the State Grid Electric Power Research Institute of China and results show that the proposed system can reach the precision class up to 0.05.Actual calibration shows that the system has high-accuracy and strong antiinterfere ability.

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