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The temperature drift of measurement accuracy is one of the primary causes in the practical process of optical voltage sensor. This paper presents a kind of self-healing optical voltage sensor technology to overcome above problem. The technology combines self-healing and optical voltage sensing techniques to implement the synchronous compensation of disturbing birefringence and the transistor half-wave...
The mathematical model of electronic capacitive voltage transformers (ECVT) in the power system is built by analyzing the sensing principles and applied environment of the ECVT, and point out that the existence of the distribution stray capacity is the key factor effecting to the transformer accuracy. From the viewpoint of the equivalent circuit, the interaction mechanism of the ECVT measuring error...
In order to further improve the sensor design of electronic capacitive voltage transformer (ECVT) based on capacitive voltage divider, after establishing the complete mathematical model of ECVT, the article presents the idea of using the complete mathematical model of ECVT capacitive voltage divider to analyze its error characteristics and optimize the design parameters based on the definition of...
In this paper, the difference between traditional electrical energy metering system and digital electrical energy metering system is presented, the thought and the design method of virtual instrument(VI) technology is introduced, a new development scheme of digital electric energy meter based on Lab VIEW DSP(Digital Signal Processor) module is presented. It takes a floating-point DSP as the core and...
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