| Abstract |
This paper presents a new distribution transformer monitoring system (DTMS), called Wimo, which utilizes the existing communication network, has low investment and operation costs and is easy to install and use. The system is able to provide following benefits for utilities: warnings and alarms in real time, measured and registered data of loadings, reactive power, earth current and power quality at the transformer substation, and more reliable and effective maintenance. Also, transformer capacity can be utilized more effectively and the control of power quality can be improved. The field tests of the first two installations in Finland have been promising and the system is shown to be compatible with the commercial GSM networks and with the information systems used in power networks. |
