Proceedings ArticleDOI
Damping SSR in a series compensated power system
Narendra Kumar
- pp 814-820
TLDR
In this paper, a new static VAr system (SVS) control scheme for damping torsional modes due to subsynchronous resonance (SSR) in a series compensated power system has been developed.Abstract:
In this paper, a new static VAr system (SVS) control scheme for damping torsional modes due to subsynchronous resonance (SSR) in a series compensated power system has been developed. The proposed scheme, called as the Narendra Kumar-subsynchronous resonance (NK-SSR) damping scheme, utilizes the effectiveness of combined reactive power and frequency (CRPF) SVS auxiliary controller in coordination with an induction machine-damping unit (IMDU) coupled to the T-G shaft. The studies are conducted on the first IEEE benchmark model. The scheme stabilizes all the torsional modes over a wide operating range of power transfer. The digital computer simulation study, using a nonlinear system model exhibits a remarkable improvement in the system transient performance. The optimal location of IMDU along the T-G shaft has been determined by performing eigen value analysis. It is found that locating IMDU after the IP turbine yields the maximum damping effect.read more
Citations
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Journal ArticleDOI
Eliminating Subsynchronous Oscillations With an Induction Machine Damping Unit (IMDU)
Sujit Purushothaman,F. de Leon +1 more
TL;DR: In this article, the authors investigated the rating and location of the induction machine that, without the aid of any controllers, effectively damps subsynchronous resonance for all line series compensation levels.
Journal ArticleDOI
Increasing the SSO Damping Effectiveness of IMDU by Raising Its Operating Frequency and Optimizing Its Parameters
Shen Wang,Zheng Xu +1 more
TL;DR: In this paper, a method to directly calculate the electrical damping of an induction machine damping unit according to its parameters, which is fast and accurate, is developed, making it possible to carry out parameter optimization of the IMDU by genetic algorithms.
Proceedings ArticleDOI
Damping subsynchronous oscillations in power system using shunt and series connected FACTS controllers
TL;DR: In this paper, series compensation in long transmission lines is an effective solution of enhancing power transfer capacity of Power System network in which series passive compensation and shunt active compensation provided by static synchronous compensator (STATCOM) and other FACTS controllers connected at the electrical center of the transmission line are considered.
Proceedings ArticleDOI
An Adaptive Controller Based on Genetic Algorithm to Mitigate the Oscillations in Power System
TL;DR: In this article, an adaptive control method was used to damp the sub-synchronous oscillations in the power system with compensated transmission line, where the output voltage of the exciter was controlled adaptively.
Journal ArticleDOI
Alleviation SSR and Low Frequency Power Oscillations in Series Compensated Transmission Line using SVC Supplementary Controllers
Sanjiv Kumar,Narendra Kumar +1 more
TL;DR: In this article, supplementary sub-synchronous damping controllers (SSDC) are proposed for damping sub synchronous oscillations in power systems with series compensated transmission lines.
References
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Journal ArticleDOI
Damping torque analysis of static VAR system controllers
K.R. Padiyar,Rajiv K. Varma +1 more
TL;DR: In this paper, the use of damping torque technique to examine the efficacy of various control signals for reactive power modulation of a midpoint-located static VAr system (SVS) in enhancing the power transfer capability of long transmission lines is considered.
Journal ArticleDOI
Torsional oscillation studies in an SSSC compensated power system
TL;DR: In this paper, an integral state feedback controller is proposed to improve the torsional characteristics of a static synchronous series compensator (SSSC) and the effects of dc-link capacitance on torsion modes are studied.
Journal ArticleDOI
Damping subsynchronous resonance in power systems
TL;DR: In this article, an idea is presented for damping SSR in power systems using a double-order SVS auxiliary controller in combination with continuous controlled series compensation (CCSC) and an induction machine damping unit (IMDU) coupled with the T-G shaft.
Journal ArticleDOI
Optimal output feedback design of a shunt reactor controller for damping torsional oscillations
TL;DR: In this article, the damping of subsynchronous resonance (SSR) oscillations by using such a shunt reactor stabilizer and placing it at the high voltage instead of the low voltage side of the generator step-up transformer is investigated.
Journal ArticleDOI
Application of an auxiliary controlled static var system for damping subsynchronous resonance in power systems
Narendra Kumar,M. P. Dave +1 more
TL;DR: In this article, a static var system (SVS) auxiliary controller for damping subsynchronous resonance in power systems has been proposed and demonstrated, which stabilizes all the torsional modes over a wide operating range.