99/02606 Proposal for a high efficiency LNG power-generation system utilizing waste heat from the combined cycle

• Publisher: Elsevier Science
• Year: 1999
• Weight: 209 KB
• Volume: 40
• Category: Article
• ISSN: 0140-6701
• DOI: 10.1016/s0140-6701(99)98375-3

✦ Synopsis

Modern electrical power systems are highly interconnected and heavily loaded, and consequently an emergency may occur as a result of a sudden increase in system load or unexpected partial or total outage of a generator. This paper presents an optimal dynamic load shedding policy for generation load imbalances. The effects of voltage and frequency characteristics of system loads, transmission lines, transformers and reactive power compensator are reported.

Equality and inequality system constraints are also considered in the formulation of this nonlinear programming problem. The further effects of system average time constant, speed drop factor, load reduction ratio (load frequency sensitivity factor), system inertia, load shedding and spinning reserve are included. A simple load distribution factor is also considered in this algorithm. The results of the unified power system of lower Egypt are given in order to validate the algorithm and demonstrate its effectiveness.