Online methodology to determine reasonable spinning reserve requirement for isolated power systems
A reasonable amount of spinning reserve is essential to satisfy system security constraints when the power system encounters a contingency. For isolated power systems, the influence of the system characteristics on spinning reserve requirements (such as load models, load variational characteristics, frequency sensitivity of loads) is more important than the reliability of individual units. The paper proposes a method that takes into consideration load variational characteristics, system load, load-frequency sensitivity factor and frequency operating standards to schedule spinning reserve requirements, which are called reasonable spinning reserve requirements. The one-minute recovery frequency following a contingency would be a more appropriate measure of system security and would represent an enhanced frequency regulating reserve policy. To examine the merits of the proposed method, simulation runs were performed on the Taiwan Power System (TPS) and compared with the Taiwan Power Company (TPC) manual dispatch.
