SYSTEMS AND METHODS FOR IDENTIFYING WEAK BUSES IN AN ELECTRICAL POWER SYSTEM.

摘要

The invention provides, a method for determining one or more weak buses (102, 104, 106, 108, 110, 304, 306) in an electrical power system (100). The method includes computing voltage stability indices (VSIs) corresponding to a plurality of buses (102, 104, 106, 108, 110) in the electrical power system (100) as a function of phasor values associated with the plurality of buses (102, 104, 106, 108, 110) and a reference phase angle corresponding to one of the plurality of buses (102, 104, 106, 108, 110). The phasor values include either (a) voltage magnitude (Vm) and phase angle (?m), both corresponding to the respective bus, or (b) change or a rate of change of the voltage magnitude (?Vm), and change or a rate of change of the phase angle (??m), both corresponding to the respective bus. The method further includes identifying one or more weak buses (102, 104, 106, 108, 110) from the plurality of buses (102, 104, 106, 108, 110) in the electrical power system (100) based on the computed V SIs.