Comprehensive online monitoring device of metering cabinet for wide-range high-voltage cable network

• Main Authors: LIU BIN, ZHU SHUNFENG, FENG RONGPING, YE FEI, MAO RUOHAN
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2024
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

According to the comprehensive on-line monitoring device for the metering cabinet for the wide-range high-voltage cable network, an effective difference value is compared with an operation limit value through on-line monitoring of stable operation of a mutual inductor, and the mutual inductor is in stable operation when the effective difference value is smaller than the operation limit value; according to mutual inductor error on-line monitoring, the mutual inductor error is normal if the ratio error and the angular difference are smaller than limiting values; on-line monitoring of the secondary load of the mutual inductor refers to the value range of the load of the mutual inductor, and the load is normal if the range is not exceeded; when the difference value is smaller than the limit value, the electric energy meter is stable in normal operation and on-line monitoring; the direct current component on-line monitoring comprises the following steps: sampling the voltage of a secondary voltage input port of a