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发明授权
CN103809010B 用于确定中压网络的每相的电压和功率的装置及方法 有权

用于确定中压网络的每相的电压和功率的装置及方法
摘要：
本发明提供了用于确定中压网络的每相电压和功率的装置及方法。基于通过通常在变压器（8）的等级处安装在电网（5，7）上的传感器（12，14，16）所获得的测量值，确定中压电网的电流参数，即，电流和电压相矢量以及功率。尤其是通过由在第一电网（7）上的测量值而推导的幅值和在中压电网（5）上所测量的相位角来确定中压电网（5）的每个导体的电压的相矢量。通过与电网的功率因数进行比较来进行中压电流相矢量、被测量的中压的角度、以及低压的被推导幅值之间的配对。
摘要（英）：

The method involves calculating three pairs of derived amplitude/angle of voltage for phase conductors of a medium voltage network by modifying pairs of amplitude/angle determined on a low voltage network (7) according to characteristic parameters of a transformer (8). Paired amplitude/angle of the voltage is reconstructed by substituting paired derived angles with voltage angles of respective average voltages. The reconstructed amplitude/angle of the voltage is paired with derived amplitude/angle of intensity for the conductors of the medium voltage network by selecting a specific pair. An independent claim is also included for a device for determining voltage and power of a phase of a medium voltage network.

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