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 1 同杆双回线路内部故障时算法性能测试结果

Tab.1 Algorithm performance test results for internal fault of double-circuit transmission line on same tower

序号 故障类型 l / km $\theta \,/\,(^ \circ )$ ${R_{\rm{T}}}$ / Ω ${K_{\rm{s} } }\left| { {Z_{\rm{sM} } } } \right|\,/\,({10^3}\;\Omega )$ $\left| { { { {Z} }_{ {\rm{dM} } } } } \right|\,/\,(1{0^4}\;\Omega )$ ${ { {K} }_{\rm{s} } }\left| { { { {Z} }_{ {\rm{sN} } } } } \right|\,/\,({10^3}\;\Omega )$ $\left| { { { {Z} }_{ {\rm{dN} } } } } \right|\,/\,(1{0^4}\;\Omega )$ 判断结果 1 ⅡBGG 100 90 200 1.156 1.089 1.223 1.078 区内故障 ⅠBCG 100 90 200 1.157 1.089 1.223 1.078 ⅠBCⅡAG 100 90 200 1.157 1.089 1.223 1.078 2 ⅡBGG 200 8 500 1.115 1.103 1.098 1.105 区内故障 ⅠBCG 200 8 500 1.115 1.103 1.097 1.105 ⅠBCⅡAG 200 8 500 1.115 1.103 1.097 1.105 3 ⅠAⅡBG 150 8 50 1.087 1.110 1.087 1.110 区内故障 ⅠAⅡBG 150 15 50 1.114 1.105 1.114 1.105 ⅠAⅡBG 150 45 50 1.087 1.110 1.087 1.110 ⅠAⅡBG 150 90 50 1.087 1.110 1.087 1.110 ⅠAⅡBG 150 120 50 1.159 1.088 1.159 1.088 4 ⅠABCⅡA 200 8 − 1.087 1.110 1.087 1.110 区内故障 ⅠABCⅡA 200 15 − 1.114 1.105 1.114 1.105 ⅠABCⅡA 200 45 − 1.087 1.110 1.087 1.110 ⅠABCⅡA 200 90 − 1.098 1.105 1.098 1.105 ⅠABCⅡA 200 120 − 1.098 1.105 1.098 1.105 5 ⅡACG 250 45 0 1.087 1.112 1.106 1.101 区内故障 ⅡACG 250 45 100 1.103 1.108 1.087 1.107 ⅡACG 250 45 300 1.105 1.107 1.085 1.108 ⅡACG 250 45 600 1.105 1.107 1.084 1.108