Improvement of Reliability of Measuring and Control Systems and Establishment of the Testing Method under High Electromagnetic Environment

强电磁环境下测控系统可靠性的提高及测试方法的建立

• 批准号: 62850044
• 负责人: KAWAMURA Tatsuo
• 金额: $ 7.68万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62850044/
• 关键词: Electromagnetic Environment; 電磁障害

When high voltage or high current switches operate, there are cases as electromagnetic pulses of high amplitudes are generated. These pulses contain considerable amount of high frequency components exceeding 100MHz. The objective of this research is to establish a testing method of measuring or controlling systems in the presence of high electromagnetic field pulses.It is necessary to characterize the high electromagnetic field environment to pursue the objective of this research. An electric field sensor of 1GHz bandwidth was developed, which is the fastest of this kind in the world. For outdoor use, a wide-band sensor of 15MHz bandwidth was developed, which has been run through the year to collect data of electromagnetic field generated by nearby lightning strokes. To enhance the immunity against electromagnetic pulses of high amplitudes, the 1ghz sensor was designed to produce outputs of high signal levels, and the 15MHz sensor employs an optical analog link.By using the above senso … More rs, electromagnetic fields in the vicinity of SF_6 gas insulated switchgears and those produced by lightning return strokes have been measured. As a result, guidelines for standardization of high electromagnetic field environments have been obtained.The accuracy of digital measuring systems in the measurement of single-shot waveform. which is intrinsic in the measurement of high electromagnetic field pulses, has been inbestigated. As a result, a new method to evaluate the accuracy of digitizers in measuring single-shot waveforms is proposed, and existing digitizers were evaluated accordingly.Based on the investigation of standards of foreing countries and the results of the above experiments, methods to evaluate the immunity of measuring or controlling systems against high electromagnetic field pulses have been elaborated. Measures to enhance the immunity of these systems in the vicinity of gas insulated switchgears were developed. Some of these measures are already employed in actral systems. In addition, a digital measuring system of 200MHz bandwidth capable of operation in the presence of high electromagnetic field pulses was manufactured, and its performance was confirmed.There doesn't exist a standard in Japan, which deals with the testing method of mesuring or controlling systems under high electromagnetic fields. As a result of this research, the establishment of standards on this testing method will be pursued. Less

当高压或大电流开关工作时，会产生高幅度的电磁脉冲。这些脉冲包含相当数量的超过100MHz的高频成分。本研究的目的是建立一种在高电磁场脉冲存在下测量或控制系统的测试方法。为了实现本研究的目的，有必要对高电磁场环境进行表征。研制出了世界上最快的1GHz带宽的电场传感器。在户外使用方面，研发了15MHz带宽的宽带传感器，该传感器全年运行，收集附近雷击产生的电磁场数据。为了增强对高幅值电磁脉冲的抗扰度，1ghz传感器设计为输出高信号电平，15MHz传感器采用光模拟链路。利用上述传感器，测量了SF_6气体绝缘开关柜附近的电磁场和雷电回击产生的电磁场。研究结果为高电磁场环境的标准化提供了指导。数字测量系统在单次波形测量中的精度。这是测量高电磁场脉冲所固有的特性，本文对此进行了研究。在此基础上，提出了一种评价数字化仪测量单次波形精度的新方法，并对现有的数字化仪进行了评价。在研究国外标准的基础上，结合上述实验结果，阐述了测量或控制系统对高电磁场脉冲抗扰度的评价方法。在气体绝缘开关设备附近，研究了提高这些系统抗扰度的措施。其中一些措施已被应用于实际系统中。此外，还研制了一个能在高电磁场脉冲下工作的200MHz带宽数字测量系统，并对其性能进行了验证。日本目前还没有关于高电磁场下测控系统测试方法的标准。根据这项研究的结果，将对这种检测方法进行标准的建立。少

项目成果

北條準一: 電気学会論文誌. 108B. 165-172 (1988)

Junichi Hojo：日本电气工程师学会汇刊 108B。165-172 (1988)

Junichi,Hojo: "Characteristics and Evaluation of Lightning Fiels Waveforms" Transactions of I. E. E. of Japan. 108-B. 165-172 (1988)

Junichi,Hojo：“闪电场波形的特征和评估”日本 I.E.E. 汇刊。

Hiroshi,Murase: "Development of 1 GHz Surge Sensor" Transactions of I. E. E. of Japan. 109-B. 32-38 (1989)

Hiroshi,Murase：“1 GHz 浪涌传感器的开发”日本 I. E. E. 汇刊。

Satoru Yanabu: IEEE Trans.on Power Delivery. PWRD-7. (1989)

Satoru Yanabu：IEEE Trans.on 电力输送。

Noriyuki Hayashi: IEEE Trans.on Power Delivery. PWRD-7. (1989)

Noriyuki Hayashi：IEEE Trans.on 电力输送。