基于改进型数字比较法的15～30Hz低频互感器误差校验技术研究

doi:10.3969/j.issn.1000-1158.2024.11.03

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摘要对低频校验仪的误差测量技术进行了全面研究,旨在实现高精度的测量。首先,对数据采集卡中A/D通道的低频误差线性进行了分析和测试。针对采样数据点的低频误差,提出了一种动态补偿方法。此外,使用采样序列重建方法消除了通道增益误差。设计了采样频率和信号频率之间的最佳自适应比,以及低频信号数据处理的优化算法,显著提高了低频校验仪的测量精度。测试结果表明,测量不确定度显著改善,对于不同的输入比和频率,比率差和相位差降低到10×10^-6(10μrad)。

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	熊博
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	黄天超

关键词 ：电学计量, 低频输电, 低频互感器, 测量不确定度, 精密测量, 数字比较法, 采样序列重构

Abstract：To presents a comprehensive study on error calibration technology for low frequency instrument transformers test set, aiming to achieve high accuracy measurements. Firstly, the low frequency error linearity of the A/D channel in the data acquisition board is analyzed and tested. To address the low frequency error in the sampling data points, a dynamic compensation method is proposed. Additionally, the channel gain error is eliminated using the sampling sequence reconstruction method. An optimal adaptation ratio between the sampling frequency and signal frequency is designed, along with an optimization algorithm for low-frequency signal data processing, significantly improving the measurement accuracy of low-frequency instrument transformers test set. The test results demonstrate a remarkable improve in measurement uncertainties, with ratio difference and phase difference reduced to 10×10^-6(10μrad) for different input ratios and frequencies.

Key words： electrical metrology;low frequency transmission low frequency transformer measurement uncertainties precision measurement digital comparison method sampling sequence reconstruction

收稿日期: 2024-01-15 发布日期: 2024-11-29

PACS:

TB971

基金资助:国家电网有限公司总部管理科技项目 (5108-202218280A-2-414-XG)

作者简介: 熊博(1988-),湖北咸宁人,中国电力科学研究院有限公司高级工程师,主要从事高电压大电流测试技术研究。Email: mylostfish@163.com

引用本文:

熊博,刘浩,周峰,李鹤,黄天超. 基于改进型数字比较法的15～30Hz低频互感器误差校验技术研究[J]. 计量学报, 2024, 45(11): 1601-1606.
XIONG Bo,LIU Hao,ZHOU Feng,LI He,HUANG Tianchao. Error Measurement Method of 15～30Hz Low Frequency Transformer Based on Improved Digital Comparison Method. Acta Metrologica Sinica, 2024, 45(11): 1601-1606.

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http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2024.11.03 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2024/V45/I11/1601

［15］	岳长喜,周峰, MOHNS E,等. 宽频高精度电压比例测量装置［J］. 电测与仪表,2013,50(10): 79-83.
［2］	WANG X F. The fractional frequency transmission system ［C］//IEEE Japan Power ＆ Energy. Tokyo, Japan, 1994: 53-58.
［14］	熊博,刘俭,殷小东,等. 10~110kV 高电压比例标准装置的0.5×10-6 误差自动精密测量方法［J］. 高电压技术,2022,48(8): 3232-3239.
	GAO G G. 6kV inductive voltage divider and determination of error ［J］. High Voltage Engineering,1992(1): 22-26.
［13］	刘浩,殷小东,陈立学,等. 基于多级励磁的高准确度1kV感应分压器的研制［J］. 高电压技术,2021,47(6): 1939-1947.
	ZHOU F, LI H, LI W T, et al. Review of high current measurement and sensing technology ［J］. High Voltage Engineering, 2021, 47(6): 1905-1920.
［10］	LIU H, LEI M, ZHOU F, et al. High precision 500kV two-stage voltage transformer with high-voltage excitation ［C］// 2020 Conference on Precision Electromagnetic Measurements.2020: 1-2.
	YUE C X, ZHOU F, MOHNS E, et al. Research on broadband high precision voltage ratio measurement system ［J］. Electrical Measurement & Instrumentation, 2013, 50(10): 79-83.
［17］	MOHNS E, BADURA H, ROSE S. Accurate error-voltage determination for calibrating 1000V inductive voltage dividers ［C］//2020 Conference on Precision Electromagnetic Measurements. 2020: 1-2.
	ZHAO G L,CHEN W J,DENG Z F,et al. Key technologies and application of flexible low-frequency AC transmission ［J］. Automation of Electric Power Systems,2022,46(15): 1-10.
	XU Z. Main schemes and key technical problems for grid integration of offshore wind farm ［J］. Automation of Electric Power Systems, 2022, 46(21) : 1-10.
	LEI M, JIANG C Y, LI D Y, et al. Review of high voltage ratio standard devices technology ［J］. High Voltage Engineering, 2021, 47(6): 1893-1904.
［9］	周峰,郑汉军,雷民,等. 1000kV串联式标准电压互感器的研制［J］. 高电压技术,2009,35(3): 464-468.
［20］	周峰. 谐波电压比例标准关键技术研究［D］. 武汉: 华中科技大学,2019.
［1］	FUNAKI T, MATSUURA K. Feasibility of the low frequency AC transmission ［C］//Power Engineering Society Winter Meeting, Singapore. 2000: 2693-2698.
［3］	赵国亮,陈维江,邓占锋,等. 柔性低频交流输电关键技术及应用［J］. 电力系统自动化,2022,46(15): 1-10.
［4］	徐政. 海上风电送出主要方案及其关键技术问题［J］. 电力系统自动化,2022,46(21): 1-10.
［5］	赵修民. 互感器校验仪的原理和应用［M］. 太原: 山西人民出版社,1962
［6］	高广淦. 6kV感应分压器及其误差测定［J］. 高电压技术,1992(1): 22-26.
［7］	雷民,姜春阳,李登云,等. 高电压比例标准装置技术综述［J］. 高电压技术,2021,47(6): 1893-1904.
［8］	周峰,李鹤,李文婷,等. 大电流测量传感技术综述［J］. 高电压技术,2021,47(6): 1905-1920.
	ZHOU F , ZHENG H J, LEI M , et al. Development of 1000kV series standard potential transformer ［J］. High Voltage Engineering, 2009, 35(3): 464-469.
［11］	ZHOU F, MOHNS E, JIANG C Y, et al. 1000V self-calibrating inductive voltage divider with coaxial-cable winding ［C］// 2014 Conference on Precision Electromagnetic Measurements. 2014: 128-129.
［12］	ZHOU F, JIANG C Y, LEI M, et al. Development of ultrahigh-voltage standard voltage transformer based on series voltage transformer structure ［J］. IET Science, Measurement & Technology, 2019, 13(1): 103-107.
	LIU H, YIN X D, CHEN L X, et al.. Development of High Accuracy 1kV Induction Voltage Divider Based on Multistage Excitation ［J］. High Voltage Engineering, 2021,47(6): 1939-1947.
	XIONG B, LIU J, YIN X D, et al. 0.5×10-6 error automatic precision measurement method of 10~110kV high voltage proportional standard device ［J］. High Voltage Engineering, 2022, 48(8): 3232-3239.
［16］	YUE C X, MOHNS E, ZHOU F, et al. A complex voltage ratio measurement system for the audio frequency range ［J］. Applied Mechanics and Materials, 2012, 239-240: 278-282.
［18］	MOHNS E, ROEISSLE G, FRICKE S, et al. A sampling-based ratio bridge for calibrating voltage transformers ［C］//2018 Conference on Precision Electromagnetic Measurements (CPEM 2018). IEEE, 2018: 1-2.
［19］	GALLO D , LANGELLA R, TESTA A . Desynchronized Processing technique for Harmonic and interharmonic analysis ［J］. IEEE Transactions on Power Delivery, 2004, 19(3): 993-1001.