Subsynchronous Resonance in Series Compensated Transmission Lines

Ballance, John; Goldberg, Saul

doi:10.1109/tpas.1973.293713

Cited by 104 publications

(39 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Hence, by eigen-analysis, the relationship between torsional damping with system variables and SVC-SSDC parameters can be traced out. With predetermined filtering functions of SVC-SSDC, the selection of gains and phase-shifts or , ( 1,2,3) ii kTi  in Fig.12 is the key to solve the multimodal SSR problem.…”

Section: Linearized Model Of the Controlled Systemmentioning

confidence: 99%

“…The SSR phenomenon was first discussed in 1937 [1] and until 1971, shaft torsional oscillations were ignored. Two shaft failures at the Mohave power plant in Southern Nevada, USA [2] led to the understanding and development of the theory of interaction between series-capacitor compensated lines and the torsional modes of steam turbinegenerators. After the second shaft failure at Mohave, the utility industry devoted considerable effort to the analysis and suppression of SSR.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Genetic Algorithm and Simulated Annealing: A Combined Intelligent Optimization Method and Its Application to Subsynchronous Damping Control in Electrical Power Transmission Systems

Xie¹

2012

Simulated Annealing - Advances, Applications and Hybridizations

View full text Add to dashboard Cite

Section: Linearized Model Of the Controlled Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic Algorithm and Simulated Annealing: A Combined Intelligent Optimization Method and Its Application to Subsynchronous Damping Control in Electrical Power Transmission Systems

Xie¹

2012

Simulated Annealing - Advances, Applications and Hybridizations

View full text Add to dashboard Cite

“…The supersynchronous currents are generally well damped by the system and pose no threat; it is the subsynchronous currents that can cause instability, particularly if they excite one of the shaft modes [8,9].…”

Section: Lcmentioning

confidence: 99%

“…Shaft models have been developed and used in the study of subsynchronous resonance because of the importance of shaft dynamics in the phenomenon [7,8,9,10]. Shaft models have also been used in other studies, such as the effect of torsional dynamics on shaft fatigue [11].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of torsional dynamics on nonlinear generator control

Allen

Chapman

Ilić

1996

IEEE Trans. Contr. Syst. Technol.

View full text Add to dashboard Cite

Feedback linearizing generator excitation control designs have demonstrated improved performance over conventional controls, such as power system stabilizers, in simulations. This type of control aims to cancel the nonlinearities in the dynamics of the generator, resulting in a closed-loop system that is linear. However, feedback linearizing control. or FBLC, depends on a measurement of the rotor acceleration, which is subject to considerable noise from shaft vibrations. This thesis examines the impact that these vibrations have on the operation of FBLC. Several possibilities for reducing the effects of torsional shaft dvnamics on control performance are also explored.The torsional dynamics are represented by a linear model. The addition of these dynamics does not affect the linearity of the closed-loop FBLC system, although the closed-loop eigenvalue placement is distorted. Furthermore, the damping of the shaft modes is much larger in the presence of FBLC. In fact, FBLC is capable of damping out shaft oscillations that are otherwise unstable due to subsynchronous resonance. However, the torsional dynamics greatly increase the tendency of the field voltage to saturate at its upper and lower limits, degrading the performance of FBLC.Several options for improving FBLC performance are considered. The acceleration measurement may be low-pass filtered; however, the phase shift from the filter in the torsional range is capable of exciting the shaft modes, leading to instability. Redesigning FBLC to include torsional dynamics produces even larger oscillations in the field voltage and poor performance in practical situations. An alternative control strategy is sliding mode control, which allows for a range of modeling errors. Because torsional oscillations produce large, high frequency uncertainties, sliding mode control does not provide any improvement over FBLC. Without modifications, FBLC is observed to remain stable over large variations in shaft parameters.

show abstract

Flexible AC Transmission Systems (FACTS)

Sood

2001

Power System Restructuring and Deregulation

View full text Add to dashboard Cite

Subsynchronous Resonance in Series Compensated Transmission Lines

Cited by 104 publications

References 12 publications

Genetic Algorithm and Simulated Annealing: A Combined Intelligent Optimization Method and Its Application to Subsynchronous Damping Control in Electrical Power Transmission Systems

Genetic Algorithm and Simulated Annealing: A Combined Intelligent Optimization Method and Its Application to Subsynchronous Damping Control in Electrical Power Transmission Systems

Effects of torsional dynamics on nonlinear generator control

Flexible AC Transmission Systems (FACTS)

Contact Info

Product

Resources

About