Abstract
The goal of this paper study is to schedule the power generation units to minimize fuel consumption cost based on a model that solves unit commitment problems. This can be done by utilizing forward dynamic programming method to determine the most economic scheduling of generating units. The model is applied to power station, which consists of four generating units. The obtained results show that the applications of forward dynamic programming method offer substantial reduction in fuel consumption cost. The fuel consumption cost has been reduced from $ 116,326 to $ 102,181 within a 24-hour period. This means saving about 12.16% of fuel consumption cost. The study emphasizes the importance of applying modeling schedule programs to the operation of power generation units. Consequently, the less consumption of fuel is, the less losses of power and pollution will be.
Highlights
The daily operation of the electric transmission grid is primarily concerned with the balance of satisfying the demand for electricity with the supply
Unit 2, and unit 4 shutdown, and unit 1, 3 startup, the saving in fuel cost per hour was found = 991.79 $/hr at hour 1; 1) The current actual fuel consumption cost in power station is $ 116,326.15 during 24-hours period; 2) After applying unit commitment the total cumulative fuel consumption cost will be $ 102,181.87 during 24-hours; 3) The saving in fuel consumption cost per day was found to be $ 14,144.28 within 24-hours period, of 4units only; 4) For a year of continuous operation saving in fuel consumption cost by $ 5,162,662.20 (= 14144.28 × 365) within a year
From the results obtained in this study, the following conclusions can be stated: 1) Combination of unit commitment using forward dynamic programming for the analysis of power plant scheduling produces reasonable results; Figure 3
Summary
The daily operation of the electric transmission grid is primarily concerned with the balance of satisfying the demand for electricity with the supply. (2015) Apply Unit Commitment Method in Power Station to Minimize the Fuel Cost. This problem is called unit commitment problem. Unit commitment problem is defined as a method to schedule generators economically in a power system in order to meet the requirements of load and spinning reserve. This problem is considered over some periods of time, such as 24 hours of a day or the 168 hours of a week [4]. Some techniques face the dimensionality problem especially when solving the large-scale system [1]
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