Digital wireless data acquisition system for measurement in high voltage substations

Abstract

This paper describes a new digital wireless data acquisition system that can be used to measure electro-magnetic interference (EMI) in power stations or other similar harsh environments. It comprises of a Remote Acquisition Unit (RAU), a Wireless Data Communication Network (WDCN) and a PCbased Control Platform As a front end of the field-distributeddata-acquisition system, RAU captures, digitizes and stores the EMI signals in its memory and sends the information to the PC using the Wireless Data Communication Network. The WDCN acts as a bi-directional data communication link between the RAU & the Control platform. It is based on Bluetooth technology and has a point-to-multipoint topology. The 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'. The system offers an innovative way for implementing monitoring, protection and testinG systems based on wireless sensor networks

A Wireless System for Monitoring Leakage Current in Electrical Substation Equipment

“…It has been argued [3] that WLAN, IEEE 802.11b/g and WPAN can be successfully applied for monitoring high-voltage substations, electric power N. Harid E lines and plant. Some authors proposed wireless data acquisition systems for measuring high-frequency signals such as transient EMI signals [4] and partial discharge signals [5]. In [6], a wireless surge arrester leakage current sensor, based on the ZigBee protocol, capable of transmitting over a distance of 400 m was developed and tested in a 230kV substation.…”