  PHAN THỊ XUÂN DIỆU MÔ PHỎNG QUÁ TRÌNH QUÁ ĐỘ ĐIỆN TỪ TRONG LƯỚI ĐIỆN TRUNG ÁP BẰNG PHẦN MỀM ATP Chuyên ngành: Mạng và Hệ thống điện Mã số: 60.52.50  - 3 Công trình   Người hướng dẫn khoa học: TS.   1:   2:  n  tr  25 tháng 5 nm 2013.  - Trung tâm Thông tin -  1    -                                      ô   2    2.                trung áp. 3.                                     3           4.                    4 [2] PGS TS Lê Kim Hùng-     [3]                 NXB  5    TRUNG ÁP 1.1.   phân           NM   1.2  TRUNG ÁP:    NM là nguy  y ra NM     NM NM 1.2.1  1.2.2NM: 6 1.2.3    NM      chúng: 1.2.4  a.NM3 pha trong mạch điện đơn giản: DNM  i = i ck + i td = 1.2.5NM  a. Khái niệm chung b. Phương pháp thành phần đối xứng        -Stokvis.   a   a1   a2   a0   b   b1   b2   b0   c   c1   c2   c0 c. Các phương trình cơ bản của thành phần đối xứng d. Các tham số thành phần thứ tự của các phần tử: a T t tdNckm eItI    .)sin( 0  7   2.1  2.1.1  U A = U B = U C = U pha  0 Ic A = Ic B = Ic C  0 2.1.2   A  B    U A    U p =U d                  U 1 (t) = 1,5U ph - (1-k) U ph cos 1 te -   2.1.3 NM 2 pha    )2( 1 )2( 1 2)2( 2 )2( 1 2)2( .3 . NANANANANB IjIaaIaIaI   (2.5) )2( 1NA )2( NB )2( NC I.3jII   (2.6) 2.1.4 NM  NM: ) XX XaX -(aII ); XX aXX (aII 20 0 2 2 NA1NC 20 022 NA1NB             (2.13) 8   là:     202 2 NAN0Đ XX X .I3I3.I  (2.14) NM:     02 02 NA1NA1NA XX .XX .I3jU3U  (2.15) 2.1.5NM 3 pha NM  i = i ck + i td = U A =U B =U C =0 2.2  NM 1 pha NM  pha A:                   (2.17) a = -0,5 + j0,866):                                                                (2.18)  C e (1) là trên pha lành khi có NM .                         (2.20)       e (1) theo k: C e (1) = f 1 (k) =                     (2.22)  k (). a T t tdNckm eItI    .)sin( 0 