• Amit Kumar Singh
• Dr Bhagwan Shree Ram

The current scenario of power demand of the world is increasing at a very fast rate due to modernization and the industrialization. And there are some problems with the approval of new transmission lines. In order to meet the demand of world we are using the power transmission lines to the limit of stability limits. So with the loss of sudden generation or transmission line stability may get disturbed there may be collapse in line voltages, may be frequency changes and may current get suddenly high due to short circuit. In order to meet the demand of load or continuous flow of power from source end to load end our system need to be stable at all the time. Main issue arises when there is fault accurse in the transmission line or distribution line or to the generation side then our system should remain stable. For above reason we need to stable the system at all the time for that we need to continually monitor the system at all the times for that in these days we are using Phasor Measurement Units. Phasor measurement unit system provide us the magnitude and phasor both of line current and line voltage unlike SCADA (supervisory control and data acquisition). With the help of phasor measurement unit we can continuously monitor our power system and can see where fault accurse and according to that we can generate the control signal or control action can be taken. Hence the power system stability can be enhanced. But these Phasor Measurement Units are not cheaper there are costlier so we cannot use them everywhere. The disposal investment of PMU device with the single price of $40,000 USD. So we do the optimization of the Phasor Measurement Unit. Which decreases the number of PMU used in system for monitoring and hence controlling cost will be less.

Phasor Measurement Units, SCADA, Programmable Logic Controllers, Heuristic Method

"Phasor Measurement Unit placement optimization using breadth-first algorithm and greedy algorithm", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.1547-1552, March-2019, Available :http://www.jetir.org/papers/JETIREL06237.pdf

"Phasor Measurement Unit placement optimization using breadth-first algorithm and greedy algorithm", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp1547-1552, March-2019, Available at : http://www.jetir.org/papers/JETIREL06237.pdf