Errors of RSSI measurement and network location can be got by measuring the distance between beacon nodes, thus the positioning accuracy of entire network can be improved by error compensation.
Because the voltage measuringerror increases when phase to phase short circuit occurs, distance relay protection will act improperly.
但是短线路在两相短路时，由于测量电压的误差会放大，可能引起距离保护的超越。
3
The results show that bright images used in gray scope can assure the measuringerror scope within 5% of spray cone angle and the measuringerror scope within 1% of penetration distance.