SHORT CIRCUIT MONITORING BYUSING PLC & SCADA

M.RAGUL BHAVAN,EEE DEPARTMENT,KNOWLEDGE INSTITUTE OF TECHNOLOGYKAKAPALAYAM , SALEM (DT)

MAIN OBJECTIVE Now a days, if power failure is occurred by means of

any short circuit in transmission line, the line man has to inspect the entire network from the transformer to the tail end.

This traditional method of detecting fault takes more time and it may cause risk to the line man in some abnormal situations (like in rainy session). We found solution for this real time issue by means of our paper called “PLC” which indicates the sequence of the fault occurred in a SCADA.

WORKING METHODOLOGY

HV Transmission lines are the Major part of the electrical distribution system, as they provide the path to transfer power between generation and load.

Transmission lines operate at voltage levels from 69kV to 765kV, and are ideally tightly interconnected for reliable operation.

Transmission protection systems are designed to identify the location of faults and isolate only the faulted section by the help of PLC.

The key challenge to the transmission protection lines in reliably detecting and isolating faults compromising the security of the system.

LAYOUT OF HV TRANSMISSION LINES

CT

PLC programmable

logic Controller

ALARM SCADA(MONITOR)

IMPLEMENTATION OF PLC

We developing this logic program by using ladder diagram method in PLC (RS logix 500) software.

If any short circuit occurred in transmission lines automatically current rating will be increased.

This high current rating will be sensed by the sensor and gives as input to the PLC.

After receiving input signal as per Ladder logic program the plc produce the

output signal to the substation through Alarm

IMPLEMENTATION OF SCADA SCADA stands for Supervisory

Control And Data Acquisition. Which is playing a vital role on

supervisory level & it’s a purely software package .

It is interfaced between the PLC via Programmable Logic Controllers (PLC's), or other commercial hardware modules.

By using scada the user can identify the faulted tower number & area.

It will use to rectify the problem easily.

CONCLUSION

The main scope of this paper is to detect the exact position of the fault occurred in the overhead HV power transmission line by PLC in a sequential manner and to display in SCADA.

To provide an uninterrupted power supply and short circuit protection in transmission lines.

Thus by using this system,we serve the power efficiently to the people