Title :
Enhancement of power system stability in a deregulated environment-ASD-machines a promising alternative
Author :
Gjerde, Jan Ove ; Sporild, Roald ; Gjengedal, T. ; Flolo, Roger ; Elstrom, Arvid
Author_Institution :
ABB Corp. Res., Billingstad, Norway
Abstract :
In this paper, the application of adjustable speed hydro machines (ASH) has been discussed for enhancing power system stability in power networks. A direct comparison has been arranged between an ASH machine and a conventional synchronous machine. It has shown that by two dedicated rotor current regulators, the ASH machine is able to control the active and reactive power production quickly and accurately. The ASH concept represents an excellent possibility to get improved control with the network. With a more concise regulation, the power system may be utilised even better, still maintaining the necessary stability margin. This will also give an enhanced profitability for the generator owner. Furthermore, for these capabilities, being a part of the common term “ancillary services”, there is a potential market growing up
Keywords :
electric current control; hydroelectric generators; machine control; power system dynamic stability; reactive power control; rotors; variable speed gear; ASD-machines; active power production control; adjustable speed hydro machines; dedicated rotor current regulators; deregulated environment; power networks; power system stability enhancement; reactive power production control; stability margin; synchronous machine; Ash; Flexible AC transmission systems; Power system dynamics; Power system reliability; Power system stability; Power system transients; Profitability; Regulators; Synchronous machines; Variable speed drives;
Conference_Titel :
Power System Technology, 1998. Proceedings. POWERCON '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4754-4
DOI :
10.1109/ICPST.1998.729315