- 1 - 短路计算书 如下图,各级水电站的系统接线图: 1×16000KVAUⅠ-Ⅱ%=18UⅠ-Ⅲ%=10.5UⅡ-Ⅲ%=6.54000KVAUk2%=72×1600KW+1×1250KWLGJ-954.13kmx1=0.444?/kmLGJ-1206.2kmx2=0.4?/kmLGJ-1202.2kmx3=0.4?/km4000KVAUk1%=78000KVAUk3%=7.56300KVAUk4%=7.53×500KW3×1450KW2×500KW2×2150KW说明:(1)、忽略系统归算至35KV侧阻抗 (2)、忽略二级电站至一级电站线路阻抗 (3)、忽略夹水电站至三级电站的线路阻抗 (4)、忽略五级站至茅庵变的线路阻抗 (5)、将所有电源点看作是无穷大电源 (6)、所有发电机功率因素取0.8,次暂态电抗取0.25000KVAUk5%=72×1600KW 系统等值网络化简: XL10.134Xa0.688Xc-0.031Xb0.438XL20.181XL30.064XT11.750XT21.750XT30.938XG15.000XG25.819XG32.991XT41.190XG43.721d1d2d3d4d5d6XT51.400XG55.0001 2345110KV10KV - 2 - 等值电路各元件参数归算过程: 1 、发电机 58.0)6.12(1 0 02.011NBdGSSXX8 1 9.55.031 0 02.08.02 5.11 0 02.022NBdGSSXX9 9 1.28.05.021 0 02.08.04 5.131 0 02.033NBdGSSXX7 2 1.38.0)1 5.22(1 0 02.044NBdGSSXX 58.0)6.12(1 0 02.055NBdGSSXX 2 、变压器 7 5.141 0 01 0 071 0 0(%)111NBKTSSUX 7 5.141 0 01 0 071 0 0(%)222NBKTSSUX 9 3 8.081 0 01 0 05.71 0 0(%)333NBKTSSUX 1 9.13.61 0 01 0 05.71 0 0(%)444NBKTSSUX 4.151 0 01 0 071 0 0(%)515NBKTSSUX 6 8 8.01 61 0 0)0 6 5.01 0 5.01 8.0(21)(21---NBaSSXXXX低中低高中高- 3 - 438.016100)105.0065.018.0(21)(21---NBbSSXXXX低高低中中高031.0-16100)18.0065.0105.0(21)(21---NBcSSXXXX中高低中低高 3、线路: 134.03710013.4444.022111NBLUSlxX 181.0371002.64.022222NBLUSlxX 064.0371002.24.022333NBLUSlxX (一)、1d 处短路时【即一级电站 6.3K V 母线短路】 831.275.1134.0181.0438.0688.0112TLLbasfXXXXXX 511GfXX 319.975.175.1819.51222TTGfXXXX 813.575.1134.0938.0991.211333...