Without contingencies, the total production of gas-fired units is higher, the gas taken out from storages is lower and there is more line pack in the system.
Reference [14] develops a SCUC capable of evaluating the integrated system security using a steady-state approach, [15] addresses the integration of energy systems in normal conditions (without contingencies) considering the gas dynamic.
The optimal solution for the case without contingencies (Exp3) was to replace production of U1 and U4 by production of U2, U3 and U6 almost all the time to reduce the gas consumption.
In this case study, two experiments are performed in order to evaluate the effect on the system operation including outages in the transmission network: Example 3 (Exp3) that estimates the system operation under normal conditions (without contingencies), and Example 4 (Exp4) that includes the evaluation of transmission contingencies in both power and gas grids.
Is going ahead without a contingency ever a good idea?
Some on Wall Street say they believe that Lehman Brothers' crisis caught the government flat-footed and without a contingency plan.
While a fall in the standings was expected, such an almighty cull of Lib Dem parliamentarians was not, and many succumbed without a contingency plan.
Without a contingency, you will lose your deposit if the appraisal comes in low and you are unable to make up the difference, or if the bank finds something wrong with the building and will not lend the money.
But Barnet have today revealed the League do not want them starting the season without a contingency plan to ensure they can complete their fixtures, meaning the club are looking for another home straight away.
The sanitation commissioner, John J. Doherty, testified before the City Council yesterday that even without the contingency cuts, his department would have to reduce garbage collection from three times a week to twice a week in many neighborhoods, and from twice a week to once a week in others, to save money.
