Installation conditions, environmental conditions, power quality, and operating processes cause negative impacts on electrical equipment such as overheating, partial discharge, mechanical damage, insulation damage, gas leakage, incorrect metering devices, and mistaken protection devices. Overheating and partial discharge shorten the operating life of equipment and can lead to serious fire and explosion incidents that affect the reliability and safety of the electrical system. Currently, ONLINE maintenance, diagnosis, and monitoring are becoming a development trend. Advanced technologies and solutions have been helping to detect early hazards that can lead to damage to electrical system equipment.
The solution monitors temperature, partial discharge, ambient temperature and humidity to enhance monitoring of electrical cabinets, helping to proactively detect and prevent early problems for electrical equipment. Advantages of the solution:
♦ Wireless technology
♦ No battery required
♦ No maintenance required
♦ Real-time alerts
♦ Device conditions monitoring
♦ Cloud storage
1. Monitoring equipment layout
Devices including temperature sensors, UHF antennas, humidity sensors will be arranged inside the compartments of circuit breaker cabinets or other electrical equipment. Temperature sensors will be installed at key connection locations such as busbars, cable connections and circuit breaker terminals.
2. Device characteristics
♦ Reader
The data reader is dedicated to switchgear monitoring to read and process signals from wireless SAW temperature sensors, environmental sensors and partial discharge detection using UHF technology and is designed to comply with IEC 62271.
– Optimized algorithm integration for data processing and conversion.
– Continuously collect data in real time.
– Data is sent to HMI, SCADA, DCS, PLC systems….
– Equipped with RS485, Ethernet-LAN communication ports with Modbus RTU/TCP IP protocol.
– Store data on MicroSD memory card and issue warnings when there is an abnormality.
– Easy installation.
– Certified by IEC 62271.
♦ UHF antenna
The UHF antenna is dedicated to switchgear monitoring to collect signals from wireless temperature sensors and detect partial discharge by UHF method and is designed according to IEC 62271 standard.
– Partial discharge detection by UHF method (frequency range from 300MHz to 3GHz).
– High sensitivity
– Real-time partial discharge detection.
– Self-calibration.
– Integrated advanced noise reduction technology.
– Easy installation, no maintenance required.
– Certified by IEC 62271
♦ Temperature sensor
The temperature sensor is dedicated to monitoring switching equipment to measure the temperature of busbar connection points, cable ends… with SAW surface sensing technology and is designed to comply with IEC 62271 standard.
– Wireless temperature sensor, no battery required.
– Real-time temperature measurement.
– High durability, impact resistance, good insulation and non-conductive.
– Works well in high voltage, high electromagnetic field and harsh environments.
– Easy to install, no maintenance required.
– Certified by IEC 62271.
♦ Humidity sensor
The sensor is dedicated to switchgear monitoring to measure the ambient temperature and humidity inside electrical equipment or cabinets and is designed in compliance with IEC 62271.
– High sensitivity.
– Measure ambient temperature, humidity and dew point in real time.
– Easy to install
♦ Principle of operation
The operating principle of the monitoring system is carried out from sensors that will measure temperature, discharge, humidity values and send the values to the data reader. The data reader will process the data, store and send it to display devices and software.
– The sensor device includes temperature, humidity and partial discharge sensors for measurement.
– The data reader will simultaneously collect temperature, humidity and partial discharge data from the sensors. The data is packaged, processed to send to registers and stored in a memory card.
– The data reader communicates and sends data to the IOT Gateway or SCADA/DCS system via RS-485 and Ethernet communication methods with Modbus RTU/TCP IP protocol.
– Information about temperature, humidity and partial discharge will be displayed on the HMI screen, computer or web browser, allowing for warnings, sending SMS messages and emails when there is an abnormality.
♦ Attached documents
– Reader: SD00385EN-AF_Datasheet_AMS01
– UHF antenna: SD00126EN-AG_Datasheet_AN-F1
– SAW temperature sensors: SD00163EN-AE_Datasheet_TSAEV11XX
– Humidity sensors: SD00430EN-AA_Datasheet_EXT-ENV-SENS