Application of Newton's optimal power flow in voltage/reactive power control

An application of Newton's optimal power flow methods to secondary voltage/reactive power control in transmission networks is considered. An efficient computer program based on sparse matrix/vector techniques has been developed for this purpose. It is characterized by good robustness, accuracy...

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Bibliographic Details
Published in:IEEE transactions on power systems 1990-11, Vol.5 (4), p.1447-1454
Main Authors: Bjelogrlic, M., Calovic, M.S., Ristanovic, P., Babic, B.S.
Format: Article
Language:English
Subjects:
240100 - Power Systems- (1990-)
240700 - Power Transmission & Distribution- Economic, Industrial & Business Aspects- (1990-)
990200 - Mathematics & Computers
COMPUTER CODES
Control systems
ENERGY SYSTEMS
GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ITERATIVE METHODS
Load flow
LOAD MANAGEMENT
MANAGEMENT
NETWORK ANALYSIS
NEWTON METHOD
OPTIMIZATION
PLANNING
Power generation
Power system control
Power system planning
Power system security
POWER SYSTEMS
POWER TRANSMISSION AND DISTRIBUTION
Reactive power
Reactive power control
REAL TIME SYSTEMS
Voltage control
VOLTAGE REGULATORS
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Summary:An application of Newton's optimal power flow methods to secondary voltage/reactive power control in transmission networks is considered. An efficient computer program based on sparse matrix/vector techniques has been developed for this purpose. It is characterized by good robustness, accuracy and speed. A combined objective function appropriate for various system load levels with suitable constraints, for treatment of the power system's security and economy, is also proposed. For real-time voltage/reactive power control, a suboptimal power flow procedure has been derived by using a reduced set of control variables. This procedure is based on sensitivity theory applied to the determination of zones for the secondary voltage/reactive power control and the corresponding reduced set of regulating sources, whose reactive outputs represent control variables in the optimal power flow program. As a result, the optimal power flow program output becomes a schedule to be used by operators in process of real-time voltage/reactive power control in both normal and emergency operating states.< >
ISSN:0885-8950
1558-0679
DOI:10.1109/59.99399