HB-BG600 Capacitive Equipment Online Monitoring

Features or Overview

1) Flexible configuration: The system structure does not need to be changed when adding or reducing monitoring devices and monitoring items. Different types and quantities of local measurement units can be connected to the field bus provided by the IED according to needs, enabling monitoring and diagnosis of electrical equipment such as transformers, instrument transformers, coupling capacitors, surge arresters, and bushings.

2) Accurate measurement: High-precision and high-stability through-core zero-flux current sensors are used in conjunction with advanced detection technologies and digital communication technologies, completely solving the accuracy and stability issues of capacitance-type equipment dielectric loss measurement and surge arrester resistance current measurement. This ensures simultaneous monitoring of different electrical equipment, making the monitoring data highly comparable and effectively eliminating the influence of external environmental factors, thereby improving the reliability of diagnostic results.

3) Reliable data: The local measurement units have a relatively complete self-diagnosis function, which can promptly reflect the operating status of the measurement unit itself. All measurement signals are transmitted using digital communication methods, completely eliminating signal distortion caused by power frequency electromagnetic interference during analog signal transmission, thus improving the accuracy and credibility of dielectric loss monitoring data.

4) Safe and reliable: The end-screen current signals of all capacitive equipment are sampled using through-core current sensors, without altering the original electrical connections of the equipment, ensuring the safety of sampling. All modules of the entire monitoring system are produced according to industrial standards, have undergone high-temperature aging and electromagnetic compatibility testing, and use German-imported cabinets with good sealing and corrosion resistance properties, meeting the requirements for long-term operation.

The HB-BG600 Capacitive Equipment Online Monitoring System includes voltage monitoring units and current monitoring units. The system adopts the design concept of fieldbus and uses a hierarchical distributed fieldbus structure, enabling online monitoring and diagnosis of insulation conditions for high-voltage electrical equipment such as CTs, CVTs, coupling capacitors, bushings, and surge arresters. Operation personnel can determine the health status of the equipment based on real-time status information, including parameters such as leakage current, equivalent capacitance, dielectric loss, and resistive current, to support condition-based maintenance.