DISTRIBUTION NETWORK METERING AND PROTECTING INTEGRATION DEVICE SUSPENDING ON HIGH-VOLTAGE SIDE

摘要

A distribution network metering and protecting integration device suspending on a high-voltage side comprises a current transformer (5) for metering, a current transformer (12) for protecting and a voltage sensor (4). The voltage signal sampled by the voltage sensor (4) is respectively transmitted to an electric energy metering module (7), a first electric quantity sampling module (8), and a second electric quantity sampling module (9). The current signal sampled by the current transformer (5) for metering is transmitted to the electric energy metering module (7). The current signal sampled by the current transformer (12) for protecting is respectively transmitted to the first and second electric quantity sampling modules (8, 9). The voltage and current signals received by the electric energy metering module (7) are processed, calculated, communicated and calibrated, and then transmitted to an integrated control module (11) through an optical fiber (14). At the same time, the first and second electric quantity sampling modules (8, 9) transmit the voltage and current signals to the integrated control module (11) through the optical fiber (14), and the voltage and current signals are synthetically calculated by the integrated control module (11) and then transmitted to a terminal (13) on a low-voltage side in a fixing format. Direct current voltages are respectively provided for the electric energy metering module (7), the first and second electric quantity sampling modules (8, 9) and the integrated control module (11) by power sources (6) suspending between arbitrary two phases on the high-voltage side.