Submitted on: 07 April 2000.
Revised on: 18 July 2000.
Accepted on: 12 September 2000.
___________________CSEE Journal of Power and Energy Systems
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Submitted on: 13 October 2011.
Revised on: 07 December 2011.
Accepted on: 24 December 2011.
___________________CSEE Journal of Power and Energy Systems
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Submitted on: 17 July 2002.
Revised on: 01 November 2002.
Accepted on: 12 November 2002.
___________________CSEE Journal of Power and Energy Systems
Submitted on: 12 February 2017.
Revised on: 13 April 2017.
Accepted on: 26 April 2017.
___________________CSEE Journal of Power and Energy Systems
Submitted on: 21 February 2013.
Revised on: 26 March 2013.
Accepted on: 16 April 2013.
___________________CSEE Journal of Power and Energy Systems