The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Unit Commitment and Economic Dispatch (UCED) with combined cycle (CC) units and AC power flow is an important problem to be solved by ISOs. The problem is difficult because of complicated transitions in CC units and highly non-linear AC power flows. Currently, to solve the problem, transitions among CC states are simplified and AC power flow is approximated with DC power flow. However, the resulting...
Many important problems in power systems, including unit commitment and economic dispatch (UCED), are modeled as MILP problems which are computationally intensive. Such problems can often be viewed as subsystems coupled by system-wide constraints. These structures have been efficiently exploited by surrogate Lagrangian relaxation and branch-and-cut to solve UCED problems with combined cycle units...
Combined cycle (CC) units are efficient because heat from combustion turbines is not wasted but is used for steam turbines. However, when state transitions are followed, CC units complicate the unit commitment and economic dispatch (UCED) problem. While branch-and-cut has been successful in solving UCED problems without considering CC units, transitions in one such unit affect the entire problem....
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.