| 摘要 |
An optical voltage sensor for measuring voltage on an underground power line or for use in other scenarios in which access to a conductor (114) is available through a blind hole. The optical voltage sensor includes a light modulating member (206), such as a Pockel's crystal. A reflective, conductive member (204) is positioned at one end of the light modulating member (206) and another conductive member (208) is positioned at an opposed end. A voltage capacitively coupled to the reflective conductive member (204) induces a voltage across the light modulating member (206), thereby impacting the amount of modulation. A beam of light (224) is directed through the crystal (206) and reflected back out of the crystal (206), where the amount of modulating can be measured. The amount of modulation indicates a measured voltage, and can be transmitted to a monitoring station where processing can determine the status of the power grid or generate other results based on the measured voltage. |
