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CURRENT MEASUREMENT SYSTEM, OPTICAL CURRENT TRANSFORMER AND FIXING DEVICE, AND OPTICAL SIGNAL SAMPLER AND METHOD THEREFOR
CURRENT MEASUREMENT SYSTEM, OPTICAL CURRENT TRANSFORMER AND FIXING DEVICE, AND OPTICAL SIGNAL SAMPLER AND METHOD THEREFOR
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机译:电流测量系统,光学电流互感器和固定装置以及光学信号采样器和方法
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摘要
A current measurement system for measuring the current in a wire, an optical current transformer and a fixing device for the optical current transformer, an optical signal sampler and a corresponding method. The measurement system (10) comprises an optical current transformer (11), an optical signal sampler (12) and a controller (13). The optical current transformer utilizes a magnetic field generated by the current to generate an optical signal corresponding to the current. The optical signal sampler comprises: a photoelectric conversion interface unit (121), for converting the optical signal into an electric signal, the electric signal including a direct current component signal and an alternating current component signal; a direct current component processing unit (122), for extracting the direct current component signal from the electric signal; an alternating current component processing unit (123), for extracting the alternating current component signal from the electric signal by extracting the direct current component signal from the electric signal; and an analogue-to-digital conversion unit (124), converting the alternating current component signal into a digital alternating current component signal. The controller multiplies the digital alternating current component signal by a correction coefficient, so as to acquire the measured value of the current.
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