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), Journal Name: Electric Machines and Power System; (USA) Vol. 18:4; ISSN 0731-356X; ISSN EMPSD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
240100* -- Power Systems-- (1990-)
240300 -- Power Transmission Lines & Cables-- (1990-)
29 ENERGY PLANNING, POLICY, AND ECONOMY
290100 -- Energy Planning & Policy-- Energy Analysis & Modeling
296000 -- Energy Planning & Policy-- Electric Power
CONTROL SYSTEMS
DYNAMIC LOADS
ELECTRIC POWER
ENERGY MODELS
ENERGY SYSTEMS
NONLINEAR PROBLEMS
OPTIMIZATION
OVERVOLTAGE
PERFORMANCE
PLANNING
POWER
POWER SYSTEMS
POWER TRANSMISSION LINES
SEMICONDUCTOR DEVICES
SIMULATION
STABILITY
THYRISTORS
VAR CONTROL SYSTEMS