REMOTE CONDITION MONITORING SYSTEM FOR DISTRIBUTION TRANSFORMER (RCMS_DT)

摘要

The present invention provides remote condition monitoring system for distribution transformer (RCMS_DT). A Remote Terminal Unit (RTU) is placed in vicinity of transformer for collecting and communicating with the operator at remote end. A Human Machine Interface (HMI) is designed at operator end to display and analyse the parameters. Algorithm is designed based on minimum number of available parameter measurements. According to available number of parameters, Remote Condition Monitoring System (RCMS) predicts device health index. Top oil temperature, oil level, humming noise level, load current and external image of transformer are taken as inputs to evaluate this invention. Algorithm evaluates health index as a function of available parameters. According to the value of health index, decision is taken whether to issue alarm for maintenance or trip. This new system avoids unnecessary outages, prevent transformer failure thereby increases the economic life cycle with considerable savings in the economy of utility. Following invention is described in detail with the help of Figure 1 of sheet 1 showing schematic connection diagram of RCMS with transformerand Figure 2 of sheet 2 showing the transformer with RCMS and sensor locations.