LHRX1908 Substation Integrated Online Monitoring System/Capacitive Equipment Online Monitoring System

1. Product Overview

The LHRX1908 substation comprehensive online monitoring system adopts a layered distributed fieldbus structure, consisting of a monitoring system installed in the substation and a data management system installed at the user end. It can implement online monitoring and diagnosis of the insulation condition of high-voltage electrical equipment such as CT, CVT, coupling capacitors, bushings, lightning arresters, etc. Users can collect monitoring data from several substation monitoring systems to the data management and diagnostic center through the local area network.
Our company provides a comprehensive online monitoring system solution, which is widely applicable to substations and power plants with voltage levels of 110kV and above. It integrates various equipment status parameters such as rated electricity, non electricity, stability, and transient in the power station. Each monitoring subsystem is based on a unified network structure and backend management system.

2. Functional features

1. Flexible configuration: Adopting a distributed design structure, the configuration of monitoring equipment and monitoring projects does not require changes to the system structure. Different types and quantities of local monitoring units can be hung on the fieldbus provided by the central monitoring unit as needed to achieve monitoring of transformers, transformers, coupling capacitors, lightning arresters, bushings, etc GIS、 Monitoring and diagnosis of electrical equipment such as circuit breakers.
2. Easy installation: Simply install a local monitoring unit under the tested electrical equipment, and hang the tested signal communication cable to the fieldbus provided by the central monitor.
3. High precision and high stability: High precision and high stability zero flux transformers are used to ensure the accuracy and stability of dielectric loss measurement for capacitive equipment and resistive current measurement for lightning arrester equipment.
4. Analysis and processing capabilities: The data management system adopts a large database with strong analysis and diagnostic functions. It can analyze electrical equipment with abnormal insulation parameters based on monitoring data, issue alarms, and automatically generate relevant monitoring information and reports including insulation parameter change trend charts.
5. Simple maintenance: The local measurement unit adopts a modular structure design, which has good universality and interchangeability. It can be repaired or replaced, including sensors, without affecting the operation of the equipment. The system is easy to expand and has strong compatibility.
6. All status monitoring information of high-voltage equipment is stored at the local end, and each station independently stores the monitoring information. The two-level online monitoring system can operate independently.
7. Provide a comprehensive online monitoring system solution, widely applicable to substations and power plants with voltage levels of 110kV and above, covering almost all high-voltage equipment, integrating various equipment status parameters such as electrical quantities, non electrical quantities, steady-state, transient, etc. within the power station. Each monitoring subsystem is based on a unified network structure and backend management system.

3. Technical indicators

The LHRX1908 monitoring system consists of a backend management and diagnostic system (server), a central monitor (host) within the station, and several on-site monitoring units (intelligent sensors) with different functions. Different functions and quantities of on-site monitoring units can be selected according to monitoring needs to flexibly form a dedicated monitoring system for a certain electrical equipment.

4. System composition
The LHRX1908 electrical equipment status monitoring and fault diagnosis system consists of two parts: a monitoring device installed in the substation and a data management system installed at the user end. Through the local area network, users can collect monitoring data from several substation monitoring systems to the data management and diagnostic center for comprehensive management