A new reactance relay based on the current of both sides is proposed， which is more accurate than traditional reactance relay based on the current of one side. The current on fault point is obtained with currents of both line ends in new reactance relay. Further， the current on fault point is used to construct an ideal zero phase sequence reactor， which is used to determine the fault coming from power cable or pole line. It is more exact than traditional fault locating with single end current or reactor. It has self-adaptive compensation to avoid over-reaching and under-reaching due to current infeed from remote end and is immune to various system operation modes. In addition， combining with the recognition criterion of a transient fault for a line with shunt reactor， the auto-recloser can reliably be blocked whenever a permanent fault occurs on hybrid line with shunt reactor. Thus， the damage caused by permanent fault reclosing to cables and impact to power systems is avoided. The combining criterion based on both above criterions can implement requirements of reclosure block in case of cable and permanent faults. Finally， EMTDC and RTDS simulation tests are established and implemented. The test results show that this method can effectively distinguish the fault location， and auto-reclosure can work properly as desired.