Co-ordinated control of synchronous generator excitation and static VAR compensator

Journal Article · Mon Nov 30 23:00:00 EST 1992 · IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/60.182642· OSTI ID:6866634

Mahran, A R; Hogg, B W ^[1]; El-Sayed, M L ^[2]

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1. Dept. of Electrical and Electronic Engineering, The Queen's Univ. of Belfast (United Kingdom)
2. Dept. of Electric Machines and Power Engineering, Univ. of Helwan (Egypt)

This paper presents a new control approach for designing a coordinated controller for a synchronous generator excitation and static VAR compensator system. The objective is to extend the operational margins of stability, whilst satisfying control requirements by introducing an integrated multi-variable controller to control both the generator exciter and the firing angle of the thyristor-controlled reactor of TCR-FC compensator. The system dynamics are modelled in terms of measurable state variables and control inputs. This is achieved by using unbiased recursive least squares identification. On the basis of this identified model, the synthesis of a coordinated optimal controller is achieved by minimizing a quadratic performance index using dynamic programming techniques. This avoids the difficulties arising in coordination of static VAR compensator and synchronous generator. System behavior under transient conditions is assessed by examining the response to three-phase short circuits, and dynamic transient stability boundaries.

• OSTI ID: 6866634
• Journal Information: IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (United States) Vol. 7:4; ISSN 0885-8969; ISSN ITCNE4
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240100* -- Power Systems-- (1990-)
99 GENERAL AND MISCELLANEOUS
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AUTOMATION
CALCULATION METHODS
COMPUTERIZED SIMULATION
CONTROL SYSTEMS
DYNAMIC PROGRAMMING
LEAST SQUARE FIT
MAXIMUM-LIKELIHOOD FIT
NONLINEAR PROBLEMS
NUMERICAL SOLUTION
ON-LINE CONTROL SYSTEMS
ON-LINE SYSTEMS
OPTIMIZATION
POWER SYSTEMS
PROGRAMMING
SIMULATION
TRANSIENTS
VAR CONTROL SYSTEMS