20150362536 | HIGH-VOLTAGE DIRECT CURRENT BROAD FREQUENCY-DOMAIN CORONA CURRENT MEASUREMENT SYSTEM - The present invention provides a kind of high voltage direct current broadband domain corona current measurement system, including the sampling resistance sensor, the UHV local end measurement unit, the optical fiber transmission unit, the safe location measurement unit and the upper monitor; The sampling resistance sensor samples the corona current signal of the HVDC line, and converts the corona current signal to the voltage signal, the UHV local end measurement unit collects the voltage signal, and obtains the optical signal by photoelectric conversion, the optical signal transforms to the safe location measurement unit by the optical fiber transmission unit, the safe location measurement unit converts the optical signal to the voltage signal, the host computer performs processing, storing and displaying with the voltage signal. The present invention has a wide range of measuring frequency, strong ability of anti-electromagnetic interference and other advantages, also can running in long-term stable status under the condition of the UHV DC and all kinds of bad natures, this provides effective technological means for further research on the character of the UHVDC corona. | 12-17-2015 |