Application of simultaneous active and reactive power modulation of superconducting magnetic energy storage unit to damp turbine-generator subsynchronous oscillations

Journal Article · Mon Mar 01 00:00:00 EST 1993 · IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/60.207407· OSTI ID:6798932

Wu, Chijui; Lee, Yuangshung ^[1]

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1. National Taiwan Inst. of Tech., Taipie (Taiwan, Province of China)

An active and reactive power (P-Q) simultaneous control scheme which is based on a superconducting magnetic energy storage (SMES) unit is designed to damp out the subsynchronous resonant (SSR) oscillations of a turbine-generator unit. In order to suppress unstable torsional mode oscillations, a proportional-integral-derivative (PID) controller is employed to modulate the active and reactive power input/output of the SMES unit according to speed deviation of the generator shaft. The gains of the proposed PID controller are determined by pole assignment approach based on modal control theory. Eigenvalue analysis of the studied system shows that the PID controller is quite effective over a wide range of operating conditions. Dynamic simulations using the nonlinear system model are also performed to demonstrate the damping effect of the proposed control scheme under disturbance conditions.

• OSTI ID: 6798932
• Journal Information: IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (United States), Vol. 8:1; ISSN 0885-8969
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
ENERGY STORAGE SYSTEMS
PERFORMANCE
TURBOGENERATORS
LOAD MANAGEMENT
CONTROL
CONTROL EQUIPMENT
DAMPING
DESIGN
OSCILLATIONS
SUPERCONDUCTING MAGNETIC ENERGY STORAGE
ELECTRIC GENERATORS
ENERGY STORAGE
EQUIPMENT
MACHINERY
MAGNETIC ENERGY STORAGE
MANAGEMENT
STORAGE
TURBOMACHINERY
250100* - Energy Storage- Magnetic