Do an thiet ke he thong dien gom 2 nha may dien va mot

Đồ án tốt ngiệp - Thiết kế mạng điện khu vực Phần 1: kế Hệ thống điện gồm nhà điện số phụ tải khu vực iiiiiiiii ThiÕt iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii máy iiiiiiiii iiiiiiiii Chơng Phân tích nguồn phụ tải 1- Sơ đồ địa lý: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii HT Cos = 0,8 N§:3 x 50 (MW) Cosφ=0,85 iiiiiiiii Nh÷ng sè liƯu vỊ ngn cung cÊp: a) HƯ thèng: Cã công suất vô lớn Điện áp Uđm = 110 kV iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Cosφ = 0,8 b)Nhµ máy NĐ: Công suất đặt: P = 3x50 MW Hệ sè c«ng suÊt: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Cos = 0,85 Điện áp định mức thứ cấp: Uđm = 10,5 kV Những số liệu phụ tải: Công suất tiêu thụ phụ tải khác nhau, phụ tải tiêu thụ cực tiểu 60 % phụ tải cực đại iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Ta cã b¶ng sè liƯu sau: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii S = P/ Cosφ ; iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Q= P.tgφ iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii = S.sinφ iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Đồ án tốt ngiệp - Thiết kế mạng điện khu vực Tæng 50 25 27 22 26 25 24 15 214 30 15 16,2 13,2 15,6 15 14,4 128,4 0,8 37,5 0,8 20,25 0,85 13,64 0,85 16,12 0,85 15,5 12,15 8,184 9,672 9,3 I III I I 0,85 14,8 8,92 I 0,85 9,3 I 0,8 18,7 11,2 I KT KT KT KT T T T T 10 10 10 10 10 10 10 10 iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Phơ t¶i Sè liƯu PMAX (MW) PMIN (MW) Cosφ QMAX (MVAr) QMIN (MVAr) Lo¹i phụ tải Yêu cầu ĐCĐA Điện áp thứ cấp iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii 22,5 iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii 5,58 III iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Ph©n tÝch nguồn phụ tải: Phân tích nguồn phụ tải nhằm mục đích xây dựng đợc phơng thức vận hành hệ thống Từ số liệu ta có nhËn xÐt nh sau: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii - Đối với nhà máy nhiệt điện chế độ vận kinh tế phát từ: (80-95)% Công suất đặt iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii hµnh iiiiiiiii iiiiiiiii iiiiiiiii - PhÝa hệ thống có công suất phát vô lớn, nên có nhiệm vụ phát công suấtt thiếu phía Nhà máy nhiệt điện không cung cấp đủ iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii - Đặc điểm hộ phụ tải: + Có hộ phụ tải loại I gồm hộ: 1, 2, 3, 5, 6, phụ tải quan trọng có yêu cầu cung cấp điện cao, phải có dự phòng chắn Mỗi phụ tải phải phải đợc cấp điện mạch, để đảm bảo cấp điện liên tục nh đảm bảo chất lợng điện chế độ vận hành + Có hộ phụ tải loại III gồm hộ 4, hộ phụ tải quan trọng để giảm chi phí đầu t ta cần cấp điện mạch đơn iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii §å án tốt ngiệp - Thiết kế mạng điện khu vực - Yêu cầu điều chỉnh điện áp: Trong mạng điện thiết kế hộ 1,2,3,4 có yêu cầu điều chỉnh điện áp khác thờng Độ lệch điện áp góp hạ áp trạm hạ áp cho phép chế độ nh sau: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ChÕ ®é iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii phụ tải cực đại: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii δU% = + iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii = iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii 5% iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii 0% ChÕ ®é iiiiiiiii iiiiiiiii iiiiiiiii phơ t¶i cùc tiĨu : iiiiiiiii iiiiiiiii iiiiiiiii sù cè : iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii δU% iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii δU% iiiiiiiii iiiiiiiii ChÕ ®é iiiiiiiii iiiiiiiii iiiiiiiii =  5% iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Các phụ tải lại có yêu cầu điều chỉnh điện áp thờng, nên độ lệch điện áp góp hạ áp trạm hạ áp cho phép chế độ nh sau: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ChÕ ®é iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ChÕ ®é iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii phụ tải cực đại: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii δU%  + 2,5% iiiiiiiii phơ t¶i cùc tiĨu : iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii δU% iiiiiiiii  + 7,5% iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii δU%  iiiiiiiii ChÕ ®é iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii - 2,5% iiiiiiiii sù cè iiiiiiiii iiiiiiiii iiiiiiiii : iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii - Thời gian sử dụng công suất cực đại tất phụ tải nhau: Tmax = 4700 (giờ) Tất phụ tải có điện ¸p thø cÊp nh = 10 KV HÖ sè công suất: Đối với hộ: 1, 2, iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii cosφ iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii = iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii 0,8 iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Đối với hộ: 4, 5, 6, 7, 8, iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii cosφ iiiiiiiii iiiiiiiii iiiiiiiii = 0,85 iiiiiiiii Đồ án tốt ngiệp - Thiết kế mạng điện khu vực Chơng Cân công suất sơ xác định chế độ làm việc nhà máy nhiệt điện iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Việc cân công suất hệ thống điện trớc hết xem khả cung cấp tiêu thụ điện hệ thống có cân hay không Sau sơ định phơng thức vận hành cho nhà máy điện hệ thống trạng thái vận hành cực đại, cực tiểu cố iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Trong ®ã: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii +∑ Pt® + ∑ P iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii = m ∑PPT + iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii đt iiiiiiiii PFNĐ : Tổng công suất phát tổ máy nhà máy nhiệt điện iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Pmđ iiiiiiiii iiiiiiiii I Cân công suất tác dụng Phơng trình cân bằng: PHT +PFNĐ iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ∑ P FND=3⋅50=150( MW ) iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii m: HƯ sè ®ång thêi, tÝnh to¸n ta lÊy m iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii = iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ∑PPT: iiiiiiiii Tổng công suất tác dụng cực đại iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii phơ t¶i iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ∑ P PT =P1+P2 +P 3+P4 +P5 +P 6+P7 +P8 iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii = 50 + iiiiiiiii iiiiiiiii 25 + 27 + 22 + 26 + 25 + 24 + 15 = 214 (MW) ∑Pm® : Tổng tổn thất công suất tác dụng đờng dây máy biến áp, khoảng (8 14)%PPT Ta lÊy Pmd = 12% PPT iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Đồ án tốt ngiệp - Thiết kế mạng điện khu vực iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ∑Pm® iiiiiiiii =12%.214 = 25,68 iiiiiiiii iiiiiiiii iiiiiiiii (MW) Ptđ : Tổng công suất tự dùng nhà máy nhiệt điện, đợc xác điịnh khoảng (8 14)%PPT Ta lấy: Ptđ = 12%.PFNĐ = 12%.150 = 18 (MW) ∑ Pdt : C«ng suÊt dự trữ mạng điện Trong trờng hợp này, nhà máy nhiệt điện hoà lới hệ thống, ta dùng lợng dự trữ phía hệ thống Tức lợng dự trữ phía hệ thống phát Phơng trình cân công suất tác dụng là: PHT + ∑PFN§ = m ∑PPT + iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ∑Pm® iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii +∑ Pt® iiiiiiiii iiiiiiiii ⇒ PHT + 150 = 214 + 25,68 +18 = 257,68 (MW) VËy m¹ng điện cần lợng công suất tác dụng hệ thống cấp đến là: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ⇒ iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii PHT = 257,68 - 150 = 107,68 iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii (MW) II C©n b»ng công suất phản kháng Cân công suất phản kháng đợc biểu diễn phơng trình sau: QHT + QFNĐ + ∑Qb = m ∑QPT + iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ∑QB + ∑QL Trong ®ã: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii - ∑QC + ∑Qt® +Qđt iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii QFNĐ : Tổng tổ máy nhà máy điện iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii công suất phản kháng phát iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ∑QFN§ iiiiiiiii = ∑PFN§ iiiiiiiii iiiiiiiii tgφ iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii =150 √ −1=150 ,619=92 ,85 , 852 (MVar) m.QPT : phụ tải phản kháng cực đại mạng có xét đến hệ số đồng thời (m = 1) iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Đồ án tốt ngiệp - Thiết kế mạng ®iÖn khu vùc QPT iiiiiiiii iiiiiiiii = PPT tgPT iiiiiiiii iiiiiiiii iiiiiiiii = 0,75.(50 + 25 + 27) + 0,619.(22 + 26 + 25 + 24 + 15) =135,828 iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii (MVAr) ∑QB: Tæng tæn thÊt MBA lới Với QB lÊy: QB = (  Ta lÊy lµ 8%, Spt tổng công kiến hệ thống điện iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii QB = iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii công suất phản kháng cấp biến áp trị số 12 )% Spt suất phơ t¶i biĨu iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii P + P + P3 P + P + P + P + P + 0,8 , 85 ( 8% iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii = 8% iiiiiiiii ( ) 50+25+27 22+26+25+24+15 + 0,8 , 85 ) iiiiiiiii = iiiiiiiii 19,16 (MVAr) QL, QC : Tổng công suất phản kháng đoạn đờng dây mạng điện Với tính toán s¬ bé, ta cã thĨ coi r»ng QL - QC = Qtd : Tỉng c«ng st tù dïng cđa nhà máy điện hệ thống Qtd = Ptd tg Qtd = 18 0,619 = 11,142 iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii (MVAr) QHT: Tổng công suất phản kh¸ng ph¸t tõ phÝa hƯ thèng: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii 0,75 iiiiiiiii iiiiiiiii QHT= PHT.tgφ iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii = 107,68 iiiiiiiii iiiiiiiii = 80,76 (MVAr) Qb: Tỉng c«ng suất phản kháng thiết bị bù phát Thay số liệu ta tính công suất bù phản kháng yêu cầu cho mạng điện là: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ) - ∑QHT iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ∑Qt® iiiiiiiii - ∑QFN§ iiiiiiiii ∑Qb iiiiiiiii = ( m ∑QPT + iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ∑QB iiiiiiiii iiiiiiiii + iiiiiiiii Đồ án tốt ngiệp - Thiết kế mạng điện khu vùc = (135,828 + 19,16 iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii + 11,142) – 80,76 - 92,85 iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii = - 7,689 iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii (MVAr) ∑Qb < VËy ta kết luận mạng điện bù công suất phản kh¸ng iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii III Sơ chế độ làm việc nhà máy nhiệt điện Việc định phơng thức vận hành cho nhà máy ảnh hởng lớn đến hiệu kinh tế toàn lới điện Vì ta phải sơ định phơng thức vận hành nhà máy điện chế độ phụ tải cực đại, cực tiểu cố Mạng thiết kế gồm nhà máy nhiệt điện hoà vào lới hệ thống có công suất vô lớn Nh nhà máy nhiệt điện vận hành kinh tế khoảng (85 95)% công suất định mức Chế độ cực đại Trong chế độ nhà máy phát với 85% công suất định mức chế độ ta có tổng công suất yêu cầu là: Pyc = PPT + Ptd + Pmđ = 257,68 (MW) Công suất phát nhà máy là: PF = 85%.150 = 127,5 (MW) Nh phần công suất hệ thống cung cấp là: PHT = 257,68 – 127,5 = 130,18 (MW) iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ChÕ ®é chế độ đại Do định mức chế ®é iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii cùc tiÓu này, phụ tải cực tiểu 60% phụ tải cực ta cho nhà máy phát với 60% công suất iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii ta có tổng công suất yêu cầu là: Pyc = PPT + Ptd + Pmđ = 172,08 (MW) iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Đồ án tốt ngiệp - Thiết kế mạng điện khu vực Công suất phát nhà PF = (MW) Nh phần công suất PHT = (MW) iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii máy là: 60%.150 = 90 iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii hƯ thèng cung cÊp lµ: 172,08 – 90 = 82,08 iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Chơng 3: phơng án nối dây mạng điện lựa chọn phơng án hợp lý iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Những yêu iiiiiiiii iiiiiiiii cầu Cung Đảm Các iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii đối cấp điện bảo chất sơ đồ kết iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii với mạng điện: an toàn, liên tục lợng điện dây có tính linh hoạt cao iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii §å án tốt ngiệp - Thiết kế mạng điện khu vực Lựa chọn dây dẫn: -Dây đồng: Có điện trở nhỏ, dẫn điện tốt, độ bền học khả chịu nhiệt tốt dây nhôm nhng giá thành cao không sử dụng - Dây nhôm: Có điện trở suất lớn dây đồng, trọng lợng nhỏ dây đồng nhng độ bền học khả chịu nhiệt, chịu lực hơn, nên dùng đợc khoảng cách ngắn -Dây nhôm lõi thép: Dây nhôm lõi thép loại dây đợc sử dụng rộng rÃi cho tất đờng dây không đảm bảo đợc độ bền học chi phí nhỏ Chọn tiết diện dây dẫn: Tiết diện dây dẫn đợc chọn theo mật độ kinh tế dòng điện: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii F≥F kt= I max J kt iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Víi Tmax = 4700 (h), tra bảng ta đợc: Jkt = (A/mm2) Dòng điện lớn nhánh đợc tính nh sau: iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii I max = iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii 103 S max n √ U dm iiiiiiiii iiiiiiiii ( A) Trong ®ã: iiiiiiiii - Smax : (MVA) iiiiiiiii iiiiiiiii iiiiiiiii công iiiiiiiii suất iiiiiiiii lớn iiiiiiiii iiiiiiiii truyền iiiiiiiii iiiiiiiii đờng iiiiiiiii dây iiiiiiiii iiiiiiiii - n : số lộ ®êng d©y iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii - U®m : điện áp định mức đờng dây iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii (kV) Tính toán kiểm tra so sánh phơng ¸n: - KiĨm tra ph¸t nãng d©y dÉn - KiĨm tra tổn thất điện áp - Kiểm tra tổn thất vầng quang 5.Bố trí dây dẫn: - Đối với đờng dây mạch đơn ta bố trí dây dẫn theo hình tam giác vuông : iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Đồ án tốt ngiệp - Thiết kế mạng điện khu vực D = 4m, ( Dtb = iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii m) iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii - iiiiiiiii Đối iiiiiiiii với iiiiiiiii đờng iiiiiiiii dây iiiiiiiii mặt phẳng nằm ngang ( cặp iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii kÐp Π iiiiiiiii iiiiiiiii ta iiiiiiiii bố iiiiiiiii trí iiiiiiiii dây iiiiiiiii nh hình vẽ): iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii dÉn iiiiiiiii theo iiiiiiiii Dtb = 4m iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii Các phơng án: Trên sở đề đà cho theo toạ độ dự kiến nhóm phơng án nối dây mạng điện nh sau: Nhóm Phơng án 1: Trục nối hệ thống nhà máy nhiệt điện theo: HT-6-1-NĐ, phụ tải lấy theo trục Nhóm gồm phơng án: a) Phơng án 1-1: 22+J iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii iiiiiiiii 13,6 24+Jiiiiiiiii 15,49 70,7 iiiiiiiii HT Cos = 0,8 Km N§