通过一起保护动作的分析，对于允许式光纤保护的联动条件、允许信号的产生过程进行了细致的分析。

With the investigation and analysis of a fault, this paper explains the operation of optical fiber permissive relaying protection and the course of sending permissive signal.

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提出只有将高频通道、超范围距离元件配合构成允许式纵联距离保护，才能保护同杆双回线跨线不接地故障。

This paper presents that the protection for the phase to phase fault should be composed of high frequency teleprotection channel and overreached distance relay.

youdao

提出只有将高频通道、超范围距离元件配合构成允许式纵联距离保护，才能保护同杆双回线跨线不接地故障。

This paper presents that the protection for the phase to phase fault should be composed of high frequency teleprotection channel and overreached distance relay.

youdao