New Method of Measuring Power System Capacity.

摘要

The procedure developed in this report is limited to steady-state conditions. Power system strength under transient or subtransient conditions is not considered. If the measuring point is far away from power sources, the steady-state, transient, and subtransient system strengths are approximately equal. The strength of a power system as the VA (volt-ampere) output when the system is short circuited. Ideally, the system strength should be infinite, but actually it is limited by the internal impedance of the system. A strong system has very low internal impedance, while a weak system's impedance is relatively high.