Transmission Network Expansion Planning

Swapnila Khangarot, Gaurav Kumar Chaturvedi, Dr. Nagendra Kumar Swarnkar

Abstract


Transmission network plays a key role in an electricity market. In addition to linking generators and loads, transmission network is also responsible for increasing competition, and helps to pick up the most efficient generators to supply loads. As electricity consumption grows, new transmission lines are needed to provide alternative paths for power transfer from generators to load centers for continuous supply. Only a proper transmission system can ensure an efficient power market. Transmission capacity shortage may result in serious consequences such as blackout, market manipulation, increase of congestion cost, etc. This has led to increase in the role of the transmission network expansion planning.

Transmission expansion planning (TEP) is an important part of power system planning. Its task is to determine an optimal network configuration according to load growth. The basic principle of TEP is minimizing the network construction and operational cost, satisfying the requirement of delivering electric power safely and reliably to load centers. The formulation used in the present work is a mixed-integer nonlinear programming problem in which the objective function is to minimize the total cost consisting of investment cost, load curtailment cost and generation cost. TEP problem is solved by interior-point direct algorithm.


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References


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