Damping estimates of subsynchronous and power swing oscillations in power systems with thyristor switching devices

Journal Article · Thu Oct 31 23:00:00 EST 1996 · IEEE Transactions on Power Systems

DOI:https://doi.org/10.1109/59.544665· OSTI ID:435388

Rajaraman, R; Dobson, I ^[1]

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1. Univ. of Wisconsin, Madison, WI (United States). Electrical and Computer Engineering Dept.

The authors extend the torque per unit velocity method for estimating the modal damping of subsynchronous oscillations to general power systems with thyristor switching devices. This allows damping of SSR by thyristor controlled series capacitors to be obtained from time domain simulations of only the electrical part of the system. The method generalizes to the case of multiple torsional modes with the same natural frequency. A new method is used to estimate the damping and frequency of the swing mode. Torque per unit velocity methods are easier than exact eigenvalue analysis and testing on the IEEE first benchmark SSR model shows excellent agreement with exact eigenvalue analysis.

• Sponsoring Organization: Electric Power Research Inst., Palo Alto, CA (United States); National Science Foundation, Washington, DC (United States)
• OSTI ID: 435388
• Report Number(s): CONF-960111--
• Journal Information: IEEE Transactions on Power Systems, Journal Name: IEEE Transactions on Power Systems Journal Issue: 4 Vol. 11; ISSN 0885-8950; ISSN ITPSEG
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
CAPACITORS
DAMPING
OSCILLATIONS
POWER SYSTEMS
RESONANCE
RESPONSE FUNCTIONS
STABILIZATION