Methodology for Identifying Sensing Elements in Electric Power System Using Marginal Mode Equations

The methodology is proposed for determining sensor nodes in electric power system and impact assessment of adjustable parameters (node generation and load power) based on calculations of the union Jacobian matrix elements using marginal modes equations. The methodology has been developed for identifying weak links in terms of the steady-state stability of electric power system based on calculating the gradients of active and reactive power losses in branches located in the near-limit zone. It is shown that the method application allows one to make reasoned decisions to optimize the structure and measures to increase the static stability of the electric power system.