منتدى الهندسة الكهربية

[QUOTE=احمد كامل;170][F**T=Times-Roman][CENTER][B][SIZE=3]كتاب بسيط وهام خاصة لطلبة الهندسة الكهربية يشرح [/SIZE][/B]
[B][SIZE=3][/SIZE][/B]
[B][SIZE=3][COLOR=navy]LOAD FLOW ANALYSIS IN POWER SYSTEMS [/COLOR][/SIZE][/B]
[B][SIZE=3][/SIZE][/B]
[B][SIZE=3][/SIZE][/B]
[B][SIZE=3]There are two popular numerical methods for solving the power-flow equati**s. These [/SIZE][/B][B][SIZE=3]are the Gauss-Seidel (G-S) and the Newt**-Raphs** (N-R) Methods (Grainger and [/SIZE][/B][B][SIZE=3]Stevens**, 1994; Elgerd, 1982; Glover and Sharma, 1994). The N-R method is superior [/SIZE][/B][B][SIZE=3]to the G-S method because it exhibits a faster c**vergence characteristic. However, the [/SIZE][/B][B][SIZE=3]N-R method suffers from the disadvantage that a “flat start” is not always possible since [/SIZE][/B][B][SIZE=3]the soluti** at the beginning can oscillate without c**verging toward the soluti**. In order[/SIZE][/B]
[B][SIZE=3]to avoid this problem, the load-flow soluti** is often started with a G-S algorithm followed [/SIZE][/B][B][SIZE=3]by the N-R algorithm after[/SIZE][/B]
[B][SIZE=3] a few iterati**s.[/SIZE][/B][/CENTER]
[/F**T][شكررررررررررررا