An Indian case study of Power System Network Planning proposed on Tellegen's theorem

Power System planning at large, comprises of load forecasting, Generation expansion/retirements, Transmission planning, expansion/augmentation in view of future power supply scenarios. The power system planning approach/methodology at large depends on first move of either generator or transmission planner. It requires co-ordination between generator and transmission planner and if a centralized planning regime exists, then the outcome is theoretically expected to be more efficient. With generation under competition and a delicensed activity coupled with electricity markets, transmission system planning faces further challenges. The heuristic/iterative methods seem to be efficient for small and growing system. At present, power system size has been increasing enormously and it is still growing. Effective and efficient planning in such a big complex system inevitably requires automation techniques. Various computation technique or algorithm are being explored i.e., Graph/Network theory, in power system applications or for populating the best possible combination for planning of transmission lines. This paper is presenting an Indian case study of Northern Region power system planning applying the principle of Tellegen's theorem. The suitable candidates for transmission line based on short length and optimal power flow are proposed. These best possible combinations of lines can be optimized further depending on planner requirement with other methodologies.