变电所各种降阻措施及接地电阻计算方法

320012.0ln3LSSLa⎟⎟⎠⎞⎜⎜⎝⎛−=()RSBLShdBe=++−⎛⎝⎜⎞⎠⎟02131295.lnρρπBhS=+1146.ρ·rSRρρ28.05.0=≈200733·333)1()1(1tsRRR+=Sγ)1(K−SγSS)1ln(]2/)1[(20KKKAH−−=πβ00/]09.5/ln(27.6[LSSL−=βbatRRKR111)1(84.01.0++=1)1()11ln(2222010011+−−+=qFnKHFgnLRaπρπρHhLL++2100222FgnLRbπρ=hLLhLLdLLg27.227.2)(31.0)(4ln21210210++++−+=06.0210])9.01([2.1)1(1gKSLLnnF−+−+=34LbLbLRπρρ2)/ln()/2ln(121+=1ρ2ρb1b··211010)(ρρ−=rrrrep110011121])()()[1(rlrrlrrrlrrez−+++=ρρπ/1bdr=1ρ·2ρ·200735nccnnccnwRRRRRRR2−+−⋅=20)1()1(2ln2−++=nnRdllnRbcπρ)1(213.01BSRb+=ρα)(lnhdlLRRnncπρ−=)18(ln20−=dllRzπρ)2ln(22AhrLLRp+=πρη1pzpzRnRRnRR+=36%20)18(ln20×−=dllRπρ1115.0SSSR×=ρ2225.0SSSR×=ρk2121×+=RRRRR1ρ2ρ200737CR/ερ=ερ·