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    • 6. 发明授权
    • Method and configuration for current measurement
    • 电流测量的方法和配置
    • US06346805B1
    • 2002-02-12
    • US09291665
    • 1999-04-14
    • Jochen ErmischUwe StephanFrank ThiemePeter Bauerschmidt
    • Jochen ErmischUwe StephanFrank ThiemePeter Bauerschmidt
    • G01R1900
    • G01R15/146
    • For precise measurement of currents with high dynamic range, especially in gas-insulated voltage switchgear, a first signal of a first low-power measurement transformer and a second signal of a second nonmagnetic measurement transformer, operating, for example, according to the principle of a Rogowski coil or according to the Faraday effect, are compared. Depending on the degree of accuracy, one of the two signals is then selected and further processed. A deviation of the two signals from each other, especially their gradient, is referred to as comparison criterion. In a corresponding configuration, the two measurement transformers of different type are connected to a common processing component for signal processing.
    • 对于具有高动态范围的电流的精确测量,特别是在气体绝缘电压开关设备中,第一低功率测量变压器的第一信号和第二非磁性测量变压器的第二信号,例如根据 罗格斯基线圈或根据法拉第效应进行比较。 根据准确度,然后选择两个信号之一并进一步处理。 两个信号彼此的偏差,特别是它们的梯度,被称为比较标准。 在相应的配置中,不同类型的两个测量变压器连接到用于信号处理的公共处理部件。