ED8030 Type Zinc Oxide Surge Arrester Online Monitoring and Analysis System

System Overview:

High-voltage equipment in power systems often experiences surface oxidation and corrosion, loose fastening bolts, and aging at the contact and busbar connection points during long-term operation, leading to equipment overheating and even severe accidents. Inside the switchgear, there is exposed high voltage in a confined, small space, making it impossible to conduct manual inspections and temperature measurements. Traditional temperature measurement methods are ineffective in addressing this issue.

The ED8060 switchgear wireless temperature measurement system involves installing a temperature sensor on the live terminal contacts inside the switchgear. After measuring the temperature of the point online, the data is wirelessly uploaded, centrally displayed, and over-temperature alarms are triggered. It can also be connected to an electrical automation system, allowing users to remotely monitor the equipment's temperature operation status. The system automatically triggers a remote alarm if it detects an abnormal temperature, ensuring timely elimination of potential hazards.

The sensor of the ED8060 type switch cabinet wireless temperature measurement system employs the acousto-optic wave temperature measurement principle. Its advantage over grating temperature measurement and thermosensitive element measurement is that it requires no power supply, truly realizing passive and wireless technology. This avoids issues such as heating from CT induction current transformers, maintenance requirements for battery-powered systems, and the need for calibration in grating temperature measurement.

The ED8060 switch cabinet wireless temperature measurement system consists of a control host, monitoring software, reader, antenna, and sensor. The sensor is recommended to be mounted using screw kits and drilled onto the terminal or outlet bracket, or it can be wrapped with heat shrink tubing around the outlet bracket. The temperature information of the sensor is transmitted to the nearest reader via the antenna, and the reader then feeds back to the control host via a wired connection for display.

Application Scope

1. Power Cable

Monitor the temperature of cable joints, cable itself, and the temperature of equipment like junction boxes and switches inside the cable branches.

2. High-voltage switchgear

The system can monitor the temperature of devices inside the high-voltage switchgear, including switch contacts, busbar joints, and cable joints.

3. Transmission and distribution lines, transformers

Temperature of transmission and distribution lines, transformers and their connecting components

4. Online temperature monitoring and overheating alert for high-voltage busbar joints in substation

Product Features

Technical Features:

Utilizes advanced digital and wireless transmission technology, with unique insulating properties, easy to use, and cost-effective.

Standardized design for easy expansion and integration with other systems, cost-effective, and flexible installation.

Guaranteed operation within a specified distance, featuring ultra-low power consumption design, sensor battery life of 2-6 years, and replaceable batteries.

Robust design against electromagnetic interference, ensuring safe, reliable, and high accuracy operation.

Compared to other temperature measurement methods:

(1) General Temperature Measurement

Conventional temperature measurement methods such as thermocouples, resistance thermometers, and semiconductor temperature sensors require metal wires to transmit signals and cannot guarantee insulation. The AT-II wireless temperature measurement system boasts excellent insulation properties, enabling it to isolate high-voltage switchgear. Consequently, it can be directly installed on high-voltage contacts within the switchgear, accurately measuring the operating temperature of the high-voltage contacts.

(2) Infrared Temperature Measurement

Infrared imaging devices cannot pass through the cabinet door to measure internal equipment. The cabinet door must be closed during the operation of the switchgear, which prevents infrared measurement. The AT-II Wireless Temperature Measurement System's temperature sensor is directly mounted on the surface of the live object, allowing for direct measurement of equipment temperature within an enclosed cabinet, which is then transmitted wirelessly.

(3) Fiber Optic Temperature Measurement

Fiber-optic temperature measurement instruments transmit signals through fiber optics, with their temperature sensors installed on the surface of live objects. The thermometer is connected to the sensor via fiber optics. Fiber optics are prone to bending, breaking, and are not heat-resistant. Accumulated dust can reduce insulation and is difficult to wire within cabinets, leading to high costs. The AT-II wireless temperature measurement system has no complex wiring, is fully insulated, and is cost-effective.