A Continuous Monitoring Leakage Current In Electrical Substation Using Wireless Sensor Networks

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A Continuous Monitoring Leakage Current In Electrical Substation Using Wireless Sensor Networks

Abstract

The design and development of a remote system for continuous monitoring of leakage currents and ground currents in high voltage electrical substations is proposed. Based on Wireless Local Area Network (WLAN) technology, the system can be used to continuously monitor a variety of plant within the substation and has low power consumption with inbuilt overvoltage protection. It consists of a transmitter module equipped with a data acquisition system connected to leakage current and voltage sensors, and a receiver module connected to a remote controller for data processing and storage. The principle of operation and the characteristics of the various components of the system are described. Validation tests have been used to verify its performance in three different test situations; (i) laboratory monitoring of the leakage current and voltage of a distribution surge arrester, (ii) laboratory measurement of the leakage current of an outdoor insulator and (iii) field monitoring of the earth current and potential rise of high- voltage tower. The measured results are in close agreement with those recorded directly through a Data Acquisition (DAQ) card with fiber- optic and coaxial cable connected systems. Data processing is carried out at the receiving end so that the monitored quantity is displayed continuously or at specified time intervals.

Author

Preethi.J Pavithra.R

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International Journal of Advanced
Science and Engineering Research

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