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A Comparative Study of Power System Transient Stability Parameters Calculation | ||
| Al-Ma'mon College Journal | ||
| Article 1, Volume 0, Issue 16, 2018, Pages 269-290 | ||
| Authors | ||
| MAJLI NEMA HAWAS; FADIL MUHAMMED KALAF; ARWA AMER ABDUL-KAREEM | ||
| Abstract | ||
| The power system transient stability studies depend on the state of sudden disturbance to which the system is subjected, such as the fault state on the system. The increasing size of modren power systems requires fast and more efficient methods of solutions. Therefore the classical approach of repeated integrations will be length and time consuming. Investigations to overcome this difficulty led to the use of direct methods. These mothods use the energy balance in the system. Two different direct methods are investigated in this work to provide a comparative study with the Indirect Integration method. The first is the rate of change of kinetic energy method. The critical fault clearance time in this method corresponds to the machine. In which the RACKE has the largest negative value at this time. The second direct method is the extended equal area criterion. In this method the multi-machine system is composed of two subsets: one consists of the critical machines; the other comprises the remaining system. Each group is reduced to a single machine, and then the two-machine equivalents were reduced to a single machine to infinite bus system. Then the equal area criterion is applied to determine the Critical Clearing Time and Transient Stability Margin (TSM). As a result, the RACKE method has closer Critical Clearing Time and Transient Stability Margin to the Indirect Integration method although the EEAC method is faster than the RACKE method. The application of these methods on four; five and twelve machine power systems is presented. The programs that were used in this work are implemented by using (MATLAB). | ||
| Keywords | ||
| Power System | ||
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