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Download Report on Industrial Visit to 230/110 Kv Singaperumalkoil
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REPORT ON INDUSTRIAL VISIT to 230/110 KV SINGAPERUMALKOIL SUBSTATION Date of Visit : 04-03-2015 41 students of III year EEE and II year MECT were part of the Industrial visit(IV) to 230/110 kvSingaperumalKoil Substation on 04-03-2015. This substation receives power from different power plants in Tamilnadu. It has three 230 kv and three 110 kv bus. The briefing was given by Additional Executive Engineer (AEE)Mr.Nagarajan. The main components of the substation are Transmission line: Used for transmitting high voltage and high frequency signals. Wave trapper: Used for trapping the high frequency (audio signals) and allows only law frequency signals to pass through it. This devise is used to send audio signals and hence act as a separate communication channel. Current transformer: Used for measuring the line current. It has the relay connected to it which is used to protect the line from high current(1200A/1A). If current exceeds the limit it sends the signal to the circuit breaker to trip the line. Isolator: Used as protecting switch for circuit breakers as they are heavy n costly equipment’s. Circuit breakers: These are the switches for tripping the line during fault conditions when high current flows suddenly. It uses SF6 as coolant for the spark generated during switching off. SF6 has got some additional advantages compared to air and oil. It is heavy as compared to air so that it can easily cool the spark. Lightening arrester: Used for absorbing the high fault current at the time of lightening. It is situated near auto transformer because the fault currents travel very fastly and within fraction of second it directly hits the transformer. Bus: These are the lines of certain voltage level used for transmitting and connecting the several components in transmission and distribution. Potential transformer: Used for measuring and controlling the voltage by means of a relay. Autotransformer: Transformer which has only one coil for both the windings in order to reduce the loss and size. A brief explanation was given on the overall coordination of all the equipment’s in the substation. In all the Industrial visit was very much useful. DATE: 4/03/2015 Students of III EEE and II MECT with AEE Mr.Nagaraj at 230/110 KVSINGAPERUMAL KOIL SUBSTATION