Novel methodology to determine the optimal energy storage location in a microgrid and address power quality and stability

In this paper, new voltage sensitivity indexes are proposed to search and evaluate the candidate buses in a microgrid, where the energy storage systems can be installed to contribute most effectively to the system. These indexes are derived from the inverse Jacobian matrix from the NewtonRaphson power flow analysis. After calculating and evaluating these indexes for the studied microgrid, four candidates‘ buses are selected. To verify that the selected buses are the best, the selected cases are simulated in PSCAD. The results from the proposed methodology and case studies have a consistent conclusion that the proposed voltage sensitivity indexes imply potential candidates for energy storage locations. Finally, by running a 24-hour time-sequence simulation of the complete system modeled in PSCAD, the best location is confirmed.