Based on the current-rising-rate protection and current increment protection, the principle of DDL protection as well as its action equation is presented.
以电流上升率保护和电流增量保护为基础，提出了一种新型的DDL保护方法及整定原则，并推导出了完整的动作方程。
When grounding fault happens at the time when current is zero, the transient value is too small, in order to prevent it, the paper brings forward the current increment method to select faulty line.
为防止在电流过零点附近发生的接地故障时的暂态量太小，论文提出利用电流增量进行故障选线。
The script associated with the probe is to increment the count variable, then to emit a message that defines the number of times the call has been made and the PID for the current invocation.
与探针相关联的脚本将递增count变量，然后发出一条消息，该消息定义调用的次数和当前调用的PID。
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