With the expansion of power grid and the increase of the transmission voltage grade, the status of relay protection in power system is becoming more and more important.
电网规模的扩大、输电电压等级的提高，使得继电保护在电力系统中的地位变得更加重要。
Calculating different voltage grade networks of magnetic coupling, is used to convert into a voltage grade or standard system of unit.
对于经过多重变压器耦合的电力系统复杂网络，惯常采用归算到同一电压级或标么值下去进行计算的方法。
Along with the continuous development of power system network and the continuous enhancement of voltage grade, the request is enhanced correspondingly to the fault phase selector.
随着电力系统网络规模的不断扩大和电压等级的不断提高，对故障选相装置的要求也不断提高。
In the application of above 24V fort current voltage grade control circuit, Voltage Alternating and resonant wave interference of input model for Programmable Logic Controllers must be resolved.
可编程控制器在高于24V的直流电压等级控制回路中应用时需解决输入模块的电压变换和谐波干扰等问题。
The invention is mainly used for high and mid-voltage-grade power grids and loads.
本发明主要用于中高电压等级的电网和负荷。
The invention is mainly used for high and mid-voltage-grade power grids and loads.
本发明主要用于中高电压等级的电网和负荷。
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