A High Voltage Test System Meeting Requirements Under Normal and All Single Contingencies Conditions of Peak, Dominant, and Light Loadings for Transmission Expansion Planning Studies

This paper introduces a new 17-bus 500 kV test system that has been specially designed to support transmission expansion planning studies. Unlike other test systems that have been developed for power system analysis, this system is unique because it focuses exclusively on transmission expansion planning at high voltage levels. Existing test systems that are used for TEP studies, in combination with electricity market problems or for integrating new generation or loads, tend to consider the system operations only under normal conditions and one loading condition. However, in practical scenarios, the system must be able to operate under different loading conditions and single contingencies to ensure reliability. Therefore, a reliable test system should mimic the behavior of a real power system, operating under both normal and all single contingency conditions for different loading conditions. This paper addresses this need by introducing a 17-bus 500 kV test system that can operate successfully under three different loading conditions (peak load, dominant load - 60% of peak load, and light load - 40% of peak load), while also being able to handle the operation at normal and single contingency conditions in each case.