EXCITATION CONTROL SCHEMES IN THE HELLENIC INTERCONNECTED SYSTEM FOR THE IMPROVEMENT OF SYSTEM DYNAMIC PERFORMANCE.

Vournas, CD

dc.contributor.author	Vournas, CD	en
dc.date.accessioned	2014-03-01T02:47:35Z
dc.date.available	2014-03-01T02:47:35Z
dc.date.issued	1984	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33247
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0021630554&partnerID=40&md5=efbe9db8382f13ab469a7c8c113014e4	en
dc.subject.other	CONTROL, ELECTRIC VARIABLES - Gain	en
dc.subject.other	ELECTRIC EXCITATION - Transients	en
dc.subject.other	ELECTRIC POWER DISTRIBUTION - Control Systems	en
dc.subject.other	MATHEMATICAL TECHNIQUES - Eigenvalues and Eigenfunctions	en
dc.subject.other	SYSTEM STABILITY - Oscillations	en
dc.subject.other	DYNAMIC STABILITY	en
dc.subject.other	HELLENIC INTERCONNECTED POWER SYSTEM	en
dc.subject.other	PARAMETER OPTIMIZATION	en
dc.subject.other	SYSTEM DYNAMIC PERFORMANCE	en
dc.subject.other	ELECTRIC POWER SYSTEMS	en
dc.title	EXCITATION CONTROL SCHEMES IN THE HELLENIC INTERCONNECTED SYSTEM FOR THE IMPROVEMENT OF SYSTEM DYNAMIC PERFORMANCE.	en
heal.type	conferenceItem	en
heal.publicationDate	1984	en
heal.abstract	The dynamic stability of the Hellenic Interconnected Power System is analyzed with a linear multimachine model, whose form allows some insight into the system characteristics. The various electromechanical oscillation modes are identified and the effect of the excitation systems on the damping of these modes is investigated. For high values of excitation system transient gain, the system becomes unstable, one of its oscillatory modes assuming negative damping. A parameter optimization algorithm is applied which yields two different sets of excitation settings (depending on imposed constraints) both of which are adequate for stable operation, preserving also the high transient gain. In this sense the power stations on which fast static exciters should be installed are selected and the use of Power System Stabilizers is avoided. The results are tested with a nonlinear simulation program.	en
heal.journalName	International Conference on Large High Voltage Electric Systems	en