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Wireless Digital Data Acquisition System for the Measurement of High Frequency Transients in Power Substations

机译：用于变电站高频瞬变测量的无线数字数据采集系统

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摘要

In high voltage substations switching operations of either disconnect switches or circuit breakers produce high-frequency transient fields. The fields can adversely affect the smooth operations of electronic equipment in the vicinity unless it is adequately protected. Consequently, knowledge of the electromagnetic (EM) environment is necessary to provide adequate immunity for the electronic equipment, and design effective protection and monitoring systems within a substation. The substation environment therefore needs to be fully characterised in terms of the emissions.rnThe paper describes a new digital wireless data acquisition system that can be used to measure the transient fields in harsh electromagnetic environments in power substations. The developed system comprises of a Remote Acquisition Unit (RAU), a Wireless Data Communication Network (WDCN) and a PC-based Control Platform. As a front end of the field-distributed-data-acquisition system, the remote acquisition unit (RAU) captures, digitises and stores the transient signals in its memory and sends the information to the control platform using the wireless data communication network (WDCN).rnThe high-speed acquisition card inside the RAU has an open interface, which can communicate directly with most microcontrollers, thus making it an ideal candidate for implementing embedded control applications. This is probably the first acquisition unit to provide an open interface to an embedded microprocessor.rnThe WDCN acts as a bi-directional data communication link between the RAU & the Control platform. It has a point-to-multipoint topology and the current laboratory prototype uses Bluetooth technology. The possibility of using a combination of Zigbee and 802.11b wireless communication standards as a means to implement the WDCN is being investigated. The system has successfully demonstrated, perhaps for the first time, the use of a digital wireless network in harsh EM environment in a power substation. The reported work serves as a reference for further development.rnThe RAU serves as the acquisition function of a Digital Storage Oscilloscope (DSO) while the Control Platform carries out the display & control function of a DSO. The whole system, as such, may be regarded as a 'Computerised Wireless Oscilloscope'.rnTransient radiated electromagnetic fields measured using a previously designed fibre-optic system is presented and compared with the capabilities of the present one. The comparison shows that the new system matches the performance of currently used fibre-optic systems for harsh EM environments.
机译：在高压变电站中，隔离开关或断路器的开关操作会产生高频瞬变场。除非受到足够的保护，否则这些磁场可能会对附近的电子设备的平稳运行产生不利影响。因此，必须具备电磁（EM）环境知识，才能为电子设备提供足够的抗扰性，并设计变电站内的有效保护和监视系统。因此，变电站的环境需要在排放方面进行全面表征。本文描述了一种新的数字无线数据采集系统，该系统可用于测量变电站在恶劣电磁环境中的瞬变场。开发的系统包括一个远程采集单元（RAU），一个无线数据通信网络（WDCN）和一个基于PC的控制平台。作为现场分布式数据采集系统的前端，远程采集单元（RAU）捕获，数字化并将瞬态信号存储在其内存中，并使用无线数据通信网络（WDCN）将信息发送到控制平台.RAU内的高速采集卡具有开放的接口，可以与大多数微控制器直接通信，因此使其成为实现嵌入式控制应用程序的理想选择。这可能是第一个为嵌入式微处理器提供开放接口的采集单元。WDCN充当RAU与控制平台之间的双向数据通信链接。它具有点对多点拓扑，当前的实验室原型使用蓝牙技术。正在研究使用Zigbee和802.11b无线通信标准的组合作为实现WDCN的方法。该系统可能已经成功地首次证明了在变电站的恶劣EM环境中数字无线网络的使用。所报告的工作可作为进一步开发的参考。rn RAU充当数字存储示波器（DSO）的采集功能，而控制平台执行DSO的显示和控制功能。这样，整个系统可以被视为“计算机无线示波器”。提出了使用先前设计的光纤系统测量的瞬态辐射电磁场，并将其与本系统的功能进行了比较。比较表明，新系统与当前用于恶劣EM环境的光纤系统的性能相匹配。

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  • 会议地点 Zagreb(HR)
  • 作者

    W H SIEW; Y WANG; F MIR; B MUSA; K LIU;

  • 作者单位

    University of Strathclyde, EEE Dept, Royal College Building, 204 George Street, GlasgowrnG1 1XW. Scotland, w.siew@eee.strath.ac.uk;

    University of Strathclyde, EEE Dept, Royal College Building, 204 George Street, GlasgowrnG1 1XW.rnScotland;

    University of Strathclyde, EEE Dept, Royal College Building, 204 George Street, GlasgowrnG1 1XW.rnScotland;

    University of Strathclyde, EEE Dept, Royal College Building, 204 George Street, GlasgowrnG1 1XW.rnScotland;

    University of Strathclyde, EEE Dept, Royal College Building, 204 George Street, GlasgowrnG1 1XW.rnScotland;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 输配电工程、电力网及电力系统;
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