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Control strategies for power swing damping which use wide-area feedback signals need to be robust to partial/complete loss of communication and changes in operating points and topology. In addition, they should have a positive effect on all controllable swing modes and ensure adequate stability margins to avoid destabilization of untargeted modes. This paper proposes a control strategy for multiple...
Despite the use of power swing damping controllers in FACTS, HVDC and generator excitation systems, poorly damped or undamped swings are occasionally seen in many power systems due to the inability of the controllers to cater to a large variety of operating conditions and swing modes. In such situations, the intervention of system operators is required to steer the system to a stable condition. Online...
This paper explores some special feedback signals for implementing damping controllers in embedded voltage source converter (VSC) based HVDC links. While a variety of feedback signals are feasible, a few signals stand out due to their favourable properties. The paper recognizes the voltage angle/frequency difference between the rectifier and inverter side ac buses as one such local signal. This signal...
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