A modified approach for transmission network planning

Planning / Expansion of transmission network are regularly done to meet the ever increasing load in a reliable and secure manner. The process involved in planning includes analysis of geographical, technical and economic feasibility of the corridor under consideration. This paper mainly concentrates on proposing a planning process considering geographical and technical analysis, with indications where economic analysis needs to be carried. Generally, when transmission network planning process is initiated, the utilities assume the line length for technical analysis based on their expertise. After geographical analysis, the initial assumed line length changes which is largely neglected by utilities. A simple case has been illustrated to demonstrate the deviation in voltage profile and compensation requirements due to change in line length.