系統(tǒng)如題53圖所示,系統(tǒng)中各元件在統(tǒng)一基準(zhǔn)功率下的標(biāo)幺值電抗為G1:=0.1,G2:,T1:Y0/△-11,,中性點(diǎn)接地電抗;T2:Y0/Y0/△,x1=0.1,x2=0,x3=0.2,,T3:Y/△-11,,L1:,,,電動(dòng)機(jī)M:。當(dāng)圖示f點(diǎn)發(fā)生A相接地短路時(shí),其零序網(wǎng)等值電抗為()。
A.1.506
B.0.147
C.0.196
D.0.969