Damping Subsynchronous Oscillations in Power Systems Using a Static Phase-Shifter
- 1 May 1986
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Systems
- Vol. 1 (2) , 76-82
- https://doi.org/10.1109/tpwrs.1986.4334906
Abstract
A method for suppressing Subsynchronous Resonance (SSR) in large turbine-generators, as a result of series capacitor compensation of power systems, is presented. This method utilizes a thyristor-controlled phase-shifter to modulate the generator active power by injecting a quadrature phase voltage in the system. The rotor speed deviation from the synchronous speed is used as the control signal. An eigenvalue analysis and the complex torque coefficient methods are used to demonstrate the technical feasibility of a static phase-shifter for damping SSR. The analytical results are verified by a detailed digital computer study on the first IEEE benchmark for SSR studies, using the BPA's Electro-Magnetic Transients Program (EMTP). The simulation results indicate that injection of 2.4% of the system phase voltage in 4 steps of 0.6%, can suppress all torsional modes of the First IEEE benchmark model.Keywords
This publication has 5 references indexed in Scilit:
- A Novel Approach to the Torsional Interaction and Electrical Damping of the Synchronous Machine Part I: TheoryIEEE Transactions on Power Apparatus and Systems, 1982
- Damping Subsynchronous Resonance Using Energy StorageIEEE Power Engineering Review, 1982
- Damping Shaft Torsional Oscillations Using a Dynamically Controlled Resistor BankIEEE Transactions on Power Apparatus and Systems, 1981
- Damping shaft Torsional Oscillations with Application to High Speed ReclosureIEEE Transactions on Power Apparatus and Systems, 1981
- Results of subsynchronous resonance test at MohaveIEEE Transactions on Power Apparatus and Systems, 1975