Luận văn Thạc sĩ Kỹ thuật điện: Nghiên cứu các phương pháp tính toán tổn thất điện năng, đánh giá chất lượng điện năng tỉnh Thái Nguyên, đề xuất các phương án cải tạo và nâng cấp lưới điện trung áp tỉnh Thái Nguyên

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Luận văn "Nghiên cứu các phương pháp tính toán tổn thất điện năng, đánh giá chất lượng điện năng tỉnh Thái Nguyên, đề xuất các phương án cải tạo và nâng cấp lưới điện trung áp tỉnh Thái Nguyên" tìm hiểu thông tin về dữ liệu tổn thất điện năng và chất lượng điện năng hiện nay trong lưới điện tỉnh Thái Nguyên cũng như ảnh hưởng của chúng đến sự phát triển kinh tế trên địa bàn tỉnh Thái Nguyên. Mời các bạn cùng tham khảo nội dung chi tiết.

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Nội dung Text: Luận văn Thạc sĩ Kỹ thuật điện: Nghiên cứu các phương pháp tính toán tổn thất điện năng, đánh giá chất lượng điện năng tỉnh Thái Nguyên, đề xuất các phương án cải tạo và nâng cấp lưới điện trung áp tỉnh Thái Nguyên

  --------------------------------------  CÁC TÍNH TOÁN NH THÁI NGUYÊN,    ÁP  Chuyên ngành:      2014
     
 CX Chính Xác     EVN Thái Nguyên)   KN  LF  LsF      MBA  TBA  TTCS   

 PHN M U ....................................................................................................6   GII THIU V L N TNH THÁI NGUYÊN, THC TRNG S D ........................9 1.1. Gii thiu v n tnh Thái Nguyên. .......................................................9 1.1.1  : ........................................................................................ 9 1.1.2  ........................................................................................... 10 1.2.  11          N TH           ............................... 14  n. ................................ 2.2 Mt s   2 . ................................................ 16  ..........   ............... 26  ..................................... 27  ... 29  .... 32 2.4. Nhn xét v cn th .........            ................................................................................................  III:           .....................................................40   ...........................................................................................40 -  ....................................................... 42  ................................................................ 47   ................................................................ 49 -TG Phú Bình ..................... 50  PH NGUYÊN. ............................................................................63     E6.6: ..................... 68 1
 E6.6: ................. 69   .......................................... 76 -E6.7: ............................ 77 -E6.7.............................................. 79  XUT CÁC BIN PHÁP CI TO VÀ NÂNG CP ........82 5.1. Các nguyên nhân gây tn th  .................................................................................. 82  ............................................................................ 83            Nguyên: .................................................................................................................84  ................................................................. 84   : .................................................................. 87  :.................................................................. 90 n pháp lâu dài gim tn thn phân ph  ........................................................................................................94  ....................................................................... 94 ..................................................................... 95    . ......................................................... 95 5.4. Nhn xét ......................................................................................................... 97 KT LUN ..........................................................................................................99    TG Phú Bình  TG Phú Bình TG Phú Bình - TG Phú Bình - TG Phú Bình 2
-TG Phú Bình 971-TG Phú Bình   TG Phú Bình -  TG Phú Bình - -E6.6 -E6.6  471-E6.6  471-E6.6 471-E6.6  -E6.6 373-E6.7  373-E6.7      3
    -E6.6 -E6.7  -  4
     Hình 2.1:  Hình: 2.2: S Hình 2.3: i phân phi 10 kV Hình 2.4:  Hình 2.5:  Hình 2.6: 2tb. Hình 3.1: - Hình 3.2: -TG Phú Bình Hình 3.3: 971-TG Phú Bình    S - E6.6  E6.7 5
           Nguyên.    N Mu ca lung, phm vi nghiên cu             6
quy  Thái Nguyên   Thái Nguyên.  x   .  t                           :  ca                            7
                         GUYÊN :    :    :  I NGUYÊN  CHUNG 8
   1.1.  1.1.1: 1.1.1.1                    kWh. 1.1.1.2                           - (2x250 MVA) & 110/35/22 kV -         m 220 kV Sóc                      - Hà                   6  - -400 & AC-85, dài 39,25 km - -400, dài 28,46 km    - Tuyên Quang, AC-1     - -185, dài 82,2 km - -185.     Quang s  9
1.1.2.   35, 22, 10, 6 kV. 1.1.2.1   -174 E1.19 -400 dài 39,258 km  6.2  175 E1.19 -400  43,179 km   DCL 172-7 E6.3 - 24,7 km                                                               Yên (Sau TG Vòng Bi). 1.1.2.2  -  : 220/110/22 T3,T4 110/35/6 kV. 10
-      :             S   110/35/22 kV. - T :), S= 2x25 MVA, U= 110/22 kV. -                     S      = 2x63 MVA U= 110/35/22 kV  S = 10,5 MVA U = 35/6 kV. -    : S = 70 MVA U = 110/35/6 kV  S= 50 MVA, MBA T2 S = 20 MVA. -  S U = 110/35/22 kV. - 6.7) : S = 110/35/22 kV. -  :  S= 110/35/6 kV. -     :               S = 110/35/6 kV. -     :               S = 110/35/22 kV. -     (E6.11) :      kV      S = 110/6 kV -    :  S    U = 110/35/10 kV. 1.2.           NGUYÊN -                    -                       ,           11
Pmax  -  -       2013            háng khác.                   -         vào -max/P min  12
   24  13
    2.1.                             T T T T S2 Pt2 Qt2 P t dt A   3R I R t2 U 2 dt t  dt R 2 dt (2.1) 0 0 0 Ut 0 t        max         .                     14
1 A Nhận A1Giao ... Lưới điện ... (ΔA) m A Nhận AnGiao Hình 2.1   S       trong   m n A(i)nhan A A N AG  i 1 A(k)giao  k 1 (2.2)  -  ; - A N         - AG    Nguyên   tính 2.2  = AN - AG = 1700,3.106  1599,95.106 = 100,35.106 (kWh) 15
   thông        2.2  2.2.1 2.  tính : t   i 2 dt .10 3 (kWh) (2-3) 0 t Do khi tính toán 2 i dt.  0 2.3 dng kê tính toán.  (2.3) n  dòng Itbbp và òng ta có th  h  ng. (2.3) thành  I2tbbp .t.10-3 (kWh) (2-4) 2 *  tbbp 2tbbp, ta 1 Ap2 + Aq2 = ( 3U tb .itb .t ) 2  i tb2 = ( Ap2 + A q2) 3.t .U tb2 2 1 tb = 3.t .U tb A 2p A2q (2-5) Ap , Aq - N  16