Concepts of static VAR system control for enhancing power transfer in long transmission lines
- Indian Inst. of Science, Bangalore (India). Dept. of Electrical Communication Engineering
- Indian Inst. of Tech., Kanpur (India). Dept. of Electrical Engineering
This paper is conserved with the influence of different levels of complexity in modelling various constituent subsystems on the dynamic stability of power systems compensated by static var systems (SVS) operating on pure voltage control. The system components investigated include thyristor controlled reactor (TCR) transients, SVS delays, network transients, the synchronous generator and automatic voltage regulator (AVR). An overall model is proposed which adequately describes the system performance for small signal perturbations. The SVS performance is validated through detailed nonlinear simulation on a physical simulator. Static VAR systems are finding increased application in present day power systems due to their fast controllability for enhancement of dynamic and transient stability limits, control of dynamic overvoltages, damping of torsional oscillations, improvement in HVDC converter terminal performance, etc. In long transmission lines, a significant improvement in power transfer can be achieved by connecting an SVS at the midpoint, which is actuated by a control signal derived from local bus voltage.
- OSTI ID:
- 6345750
- Journal Information:
- Electric Machines and Power System; (USA), Vol. 18:4; ISSN 0731-356X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
29 ENERGY PLANNING
POLICY AND ECONOMY
POWER SYSTEMS
OPTIMIZATION
POWER TRANSMISSION LINES
VAR CONTROL SYSTEMS
PERFORMANCE
DYNAMIC LOADS
ELECTRIC POWER
ENERGY MODELS
NONLINEAR PROBLEMS
OVERVOLTAGE
PLANNING
SIMULATION
STABILITY
THYRISTORS
CONTROL SYSTEMS
ENERGY SYSTEMS
POWER
SEMICONDUCTOR DEVICES
240100* - Power Systems- (1990-)
240300 - Power Transmission Lines & Cables- (1990-)
290100 - Energy Planning & Policy- Energy Analysis & Modeling
296000 - Energy Planning & Policy- Electric Power