For example, by comparing code churn from phasetophase, they might spot an underlying problem if the pace picks up in one phase.
例如，通过比较各个阶段间的编码生产，他们可以在某一阶段内发现潜在的问题。
2
Because the voltage measuring error increases when phasetophase 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
This paper presents that the protection for the phasetophase fault should be composed of high frequency teleprotection channel and overreached distance relay.