基于测量波阻抗的同杆双回输电线路故障识别

叶睿恺,吴浩,董星星

Fault identification of double-circuit transmission lines on same tower based on measuring wave impedance

Rui-kai YE,Hao WU,Xing-xing DONG

表 3 同杆双回线路行波采样信息丢失保护算法性能测试结果

Tab.3 Performance test results of protection algorithm for double-circuit transmission line on same tower with losing traveling wave samples

故障情况 丢失数据 $k$ ${ { {K} }_{\rm{s} } }\left| { {Z_{\rm{sM} } } } \right|\,/\,({10^3}\;\Omega )$ $\left| {{{{Z}}_{{\rm{dM}}}}} \right|/\Omega $ ${ { {K} }_{\rm{s} } }\left| { { { {Z} }_{ {\rm{sN} } } } } \right|\,/\,({10^3}\;\Omega )$ $\left| {{{{Z}}_{{\rm{dN}}}}} \right|/\Omega $ 判断结果 故障一： ⅠBCⅡA l=100 km θ=90° RT=200 Ω 无 0 1.157 $1.089 \times 1{0^4}$ 1.222 $1.078 \times 1{0^4}$ 区内故障 电压 峰值 $1.100$ $1.034 \times 1{0^4}$ $1.222$ $1.078 \times 1{0^4}$ 电流 峰值 $1.208$ $1.071 \times 1{0^4}$ $1.222$ $1.078 \times 1{0^4}$ 电压&电流 峰值 $1.100$ $1.034 \times 1{0^4}$ $1.222$ $1.078 \times 1{0^4}$ 故障二： ⅠAG l=100 km θ=45° RT=100 Ω 无 0 $1.156$ $1.089 \times 1{0^4}$ $1.223$ $1.078 \times 1{0^4}$ 区内故障 电压 5 $0.925$ $8.710 \times 1{0^3}$ $1.223$ $1.078 \times 1{0^4}$ 区内故障 10 $0.635$ $5.993 \times 1{0^3}$ $1.223$ $1.078 \times 1{0^4}$ 15 $0.288$ $2.727 \times 1{0^3}$ $1.223$ $1.078 \times 1{0^4}$ 电流 5 $1.413$ $9.995 \times 1{0^3}$ $1.223$ $1.078 \times 1{0^4}$ 区内故障 10 $1.675$ $9.103 \times 1{0^3}$ $1.223$ $1.078 \times 1{0^4}$ 15 $1.937$ $8.219 \times 1{0^3}$ $1.223$ $1.078 \times 1{0^4}$ 电压&电流 5 $1.020$ $7.636 \times 1{0^3}$ $1.223$ $1.078 \times 1{0^4}$ 区内故障 10 $0.888$ $4.380 \times 1{0^3}$ $1.223$ $1.078 \times 1{0^4}$ 15 $0.444$ $2.191 \times 1{0^3}$ $1.223$ $1.078 \times 1{0^4}$ 故障三： ABG l=100 km θ=90° RT=300 Ω 无丢失 0 $8.407$ $4.879 \times 1{0^{ - 10}}$ $4.402$ $6.924 \times 1{0^{ - 12}}$ 区外故障 电压 5 $6.254$ $3.133 \times 1{0^{ - 10}}$ $4.402$ $6.924 \times 1{0^{ - 12}}$ 区外故障 10 $4.191$ $2.658 \times 1{0^{ - 10}}$ $4.402$ $6.924 \times 1{0^{ - 12}}$ 15 $2.053$ $7.013 \times 1{0^{ - 11}}$ $4.402$ $6.924 \times 1{0^{ - 12}}$ 电流 5 $6.306$ $3.755 \times 1{0^{ - 10}}$ $4.402$ $1.526 \times 1{0^{ - 11}}$ 区外故障 10 $4.220$ $2.519 \times 1{0^{ - 10}}$ $4.402$ $1.526 \times 1{0^{ - 11}}$ 15 $2.069$ $9.998 \times 1{0^{ - 11}}$ $4.402$ $1.526 \times 1{0^{ - 11}}$ 电压&电流 5 $6.302$ $3.724 \times 1{0^{ - 10}}$ $4.402$ $6.924 \times 1{0^{ - 12}}$ 区外故障 10 $4.205$ $2.296 \times 1{0^{ - 10}}$ $4.402$ $6.924 \times 1{0^{ - 12}}$ 15 $2.478$ $1.122 \times 1{0^{ - 10}}$ $4.402$ $6.924 \times 1{0^{ - 12}}$