Abstract: With the development of the power industry, the requirements for the safety and reliability of equipment are becoming increasingly stringent. Under these conditions, wireless temperature monitoring systems for high-voltage equipment have emerged. This technology involves installing temperature sensors with built-in batteries or current sensing and wireless transmission modules at various temperature measurement points. Due to their small size and the absence of any wiring, their electrical safety is guaranteed. The sensors periodically transmit temperature data wirelessly to a receiving unit, which can then network to send the data to a master station, thereby achieving electrical temperature monitoring of a regional system.
This article introduces the application of wireless temperature sensors in a power distribution room in the Netherlands.
Abstract: With the development power industry, the requirements for the safety and reliability of equipment are getting higher and higher. In this situation, ACREL wireless temperature monitoring system is designed for high voltage device. This technology is to install the temperature sensor with built-in battery or temperature sensor by current sensing and wireless transmitter module at each temperature measurement point. The sensor periodically sends the temperature measurement data wireless to the receiving unit, and the receiving unit can be connected to the network to send the data to the master station, thereby realizing electrical temperature monitoring of a regional system.
This article introduces wireless monitoring system used in substations in Netherlands.
1. Current Situation Current Status
For many years, due to technological limitations, although attempts have been made to solve the above problems using infrared thermometers, infrared imagers, temperature-sensing cables, and traditional point-type temperature measurement systems, none of these methods could achieve temperature measurement of switchgear components such as circuit breakers, disconnector connection points, and contacts. Currently, domestic power temperature measurement mainly uses infrared point thermometers and fiber optic thermometers. However, online methods cannot solve the high-voltage insulation problem, so electrical equipment with limited space, such as the contacts of high-voltage switches, are basically operating in a completely unmonitored state, posing significant safety hazards.
For many years, due to the limitations of the technical level, although infrared thermometer, infrared imager, temperature sensing cable, traditional point-type temperature measurement system have been used to solve the above problems, but can not achieve the switch cabinet such as circuit breaker, the connection point and contact temperature measurement. At present, domestic electric temperature measurement mainly uses infrared point measuring instrument and optical fiber temperature measuring instrument. However, the on-line method cannot solve the problem of high-voltage insulation, so the electrical equipment with limited space, such as the contact of high-voltage switch, basically operates in a completely unmonitored state, with major safety hazards.
2. Project Overview Project Overview
DigIoT, a Dutch company specializing in the Internet of Things (IoT) for power systems, provides IoT services to local substations. A client inquired about Acrel's wireless temperature monitoring products, hoping to use Acrel's ATE wireless temperature sensors and ATC receivers to detect the temperature of cables inside switchgear. The data would be transmitted to a backend system via RS485 communication for real-time monitoring, aiming to prevent overheating and malfunctions within the switchgear that could disrupt normal equipment operation and pose safety hazards.
DigIoT is an electric IoT company, providing electrical IoT services for local substations. Customer consults Acrel wireless temperature measurement products, attending through Acrel ATE wireless temperature sensor and ATC receiver, the cable in the switchgear temperature detection, And through RS485 communication data transmission to the back platform for real-time monitoring, can effectively prevent overheating failure, affect the normal operation of equipment, avoid safety risks.
3. Introduction to Wireless Temperature Measurement Products
Wireless temperature monitoring device Introduction
Acrel online temperature measurement devices are suitable for temperature detection of high and low voltage switch cable joints, circuit breaker contacts, high voltage cable joints, low voltage high current and other equipment. They prevent excessive contact resistance and overheating caused by oxidation, loosening and other factors during operation, which could become a safety hazard. They provide timely, continuous and accurate feedback on the operating status of equipment and ensure equipment safety.
Acrel on-line temperature measurement device is suitable for the temperature detection of high and low voltage switches, circuit breaker contacts, high voltage cable middle heads, low voltage and high current equipment, to prevent contact caused by oxidation, loosening and other factors during operation Excessive contact resistance and heat generation become a safety hazard, timely, continuous and accurate reflection of equipment operating status, and equipment safety.
3.1 Wireless temperature measurement scheme
1. Temperature measuring instrument
1) Temperature sensor
a. Battery-powered wireless temperature sensor
A sensor installed on a heat-generating part to collect temperature data and transmit it wirelessly.
There are currently four types of wireless temperature sensors:
sensor installed in a heating area that collects temperature and transmits it wirelessly.
There are currently four type wireless temperature sensors:
b. CT induction radio wireless temperature sensor
A sensor installed at high current points such as circuit breaker contacts, busbars, and cable joints to collect temperature data and transmit it wirelessly.
There are currently two types of wireless temperature sensors:
sensor installed at a high current such as a circuit breaker contact, a bus bar, a cable lap contact, to collect temperature and transmit it wirelessly.
There are currently two wireless temperature sensors:
2) Receiving/Displaying Unit
a. Receiving unit
b. Display Unit
3.2 Structural Diagram
3.3 Product Solution Combination Diagram Typical Solution
4. Typical Application
