Trainig report on transmisson 33/11 kv substation

The training report on transmisson 33/11 kv substation.

The main bus is connected to grid gss danapur Bihar. Now the transmisson line first parallel connected with lightining arrester to diverge surge ,followed by CVT connected parallel

CVT measures voltage and steps down at 110V. A.C. for control panel, at the location a wave trap is connected to carrier communication at higher frequencies.

A current transformer is connected in series with line which measure current and step down current at ratio 800:1 for control panel.

Switchgear equipment is provided, which is the combination of a circuit breaker having an isolator at each end. A transformer is connected to main bus though a bus coupler. The main bus has total capability of 160 MVA for 33 KV, which is subdivided into two transformer capacity of 80 MVA (40MVA+40MVA) parallel connected for 33KV and other two transformer capacity of 80KV (40KV+40KV) are parallel connected for substation.

At both ends of transformer lightning arrester current transformer and switchgear equipment provided. Transformer step downs voltage from 220KV to 33KV.

The main bus is provided with switchgear equipment & a current transformer. This gives way to six feeders transmitting power to danapur. The main bus is connected to jack bus or transfer bus through a bus coupler & 11KV is provided with switchgear equipment. This gives way to feeders transmitting power to railway station danapur .
A step down transformer of 11KV/440V is connected to control panel to provide supply to the equipments of the substation. Capacitor bank is connected to main bus of 11KV. It is provided to improve power factor & voltage profile.
  training report by pratik agrawal can be download from here .