Abstract
This paper describes an investigation into the use of an optimal controller using state variable feedback to suppress subsynchronous resonance (SSR) of the 1072 MVA nuclear powered turbogenerators to be installed at the Koeberg power station. The results demonstrate that this controller is more successful as an SSR countermeasure than the use of series power filters or an auxiliary stabilizing signal to supplement the conventional automatic voltage regulator. Like the latter method, the optimal control scheme is hampered by the presence of a rotating diode exciter with its limited ceiling voltage and long field time constant, which together severely limit the control action; in addition the practical measurement and feedback of the state variables is complicated and difficult to implement. Moreover, a change in the capacitive compensation level (or any other system parameter) renders the optimal controller suboptimal and may require it to be redesigned to suit the new situation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
