Review of Excitation Techniques for Squirrel Cage Induction Generator Based Micro Grid Using Dynamic Compensation. Issue 3 (7th February 2022)

• Record Type: Journal Article
• Authors: Saxena, Nitin Kumar; Kumar, Ashwani; Wenzhong Gao, David
• Is Part Of: Electric power components and systems. Volume 50:Issue 3(2022)
• Page Start: 149
• Page End: 165
• Publication Date: 2022-02-07
• Subjects: static and dynamic compensator -- squirrel cage induction generator -- fixed capacitor -- reactive power compensation -- STATCOM; Electric machinery -- Periodicals; 621.3104205
• DOI: 10.1080/15325008.2022.2135645
• Languages: English
• ISSNs: 1532-5008

Abstract

Abstract: Reactive power compensations are more prominent and challenging especially with grid tied wind generating systems because IEEE standards such as 1159:1995, 1250:2011 standard allows ±5% voltage variation along with almost zero tolerance of frequency deviation with ±0.03% maximum variation to interconnect any new generating plant with grid. In spite of availability of modern generators, Squirrel Cage Induction Generator (SCIG) as a micro grid component may still be a promising generator in small scale wind generating systems. However, reactive power demand for excitation is a big challenge for the smooth functioning of SCIG. This article critically reviews the excitation techniques for SCIG by a new approach of results demonstration for several techniques. To demonstrate the two extreme reactive power compensation techniques, static and dynamic compensating devices, namely fixed capacitor (FC) and STATCOM (ST) respectively, are analytically modeled at one place along with SCIG as a source of micro grid. The simulink models are tested for various real time performance aspects such as SCIG characteristics, total harmonic distortions (THD), voltage magnitude and frequency profiles. The results also demonstrate the necessity of high performance dynamic compensators for coping up the system's frequency challenges during system starting and load changes. The financial as well as technical limitations of both, static and dynamic compensating techniques, are also demonstrated for nurturing the economic and power quality based concepts in the mind of readers so that new areas of research can be rooted out from this scholastic approach of literature reviewing. Highlights: The main contributions of this article are; Review of parameters estimation of induction machine first and then, for operating it as induction generator Reactive power requirement using iteration procedure for achieving promised voltage profile from micro grid with SCIG Review of static compensator's (FC) limitations for SCIG excitation in micro grid operation Review of parameters estimation and modeling of STATCOM as dynamic compensator Review of STATCOM's merits over FC for SCIG excitation in micro grid operation Review of hybrid participation of reactive power compensation to allow control of one ancillary service, required for routine operation