Large scale wireless busbar contact temperature online monitoring system

Large scale wireless busbar contact temperature online monitoring systemWorking principle

Each sensor temperature measurement circuit contains a CPU that starts the A/D converter at regular intervals. The A/D converter converts the temperature signal detected by the temperature sensing chip into a digital quantity, and the CPU performs digital filtering, scaling conversion, and other calculations to send the measurement data to the wireless transceiver module in the sensor. The wireless transceiver module converts the electrical signal into a wireless signal and transmits it out. On the host side, there is also a wireless transceiver module to receive all the wireless signals sent by the temperature measurement circuit and convert them into electrical signals. The CPU inside the host can read the electrical signal to know the contact temperature detected by the sensor.

The wireless temperature sensor consists of a temperature sensor, a single-chip microprocessor system, a wireless transceiver module, and a power supply.

Large scale wireless busbar contact temperature online monitoring systemCompared with other temperature measurement methods

(1) Ordinary temperature measurement

Conventional temperature measurement methods such as thermocouples, thermistors, and semiconductor temperature sensors require metal wires to transmit signals, and insulation performance cannot be guaranteed. The JC-CWS/1 wireless temperature measurement system has excellent insulation performance, which isolates the high voltage of the switchgear and can be directly installed on the high voltage contacts inside the switchgear to accurately measure the operating temperature of the high voltage contacts.

(2) Infrared temperature measurement

Infrared temperature measurement cannot measure internal equipment through the cabinet door. When the switchgear is in operation, the cabinet door must be closed, and the sensor must be installed on the inner wall of the switchgear, which requires high installation accuracy. The measurement is inaccurate due to dust in the busbar. The temperature sensor of JC-CWS/1 wireless temperature measurement system is directly installed on the surface of charged objects, and can measure the temperature of the equipment directly in a closed cabinet and transmit it wirelessly.

Large scale wireless busbar contact temperature online monitoring systembrief introduction

Temperature has always been a very important parameter, and in many places such as electricity, coal, healthcare, military, and daily life, temperature measuring devices are needed to detect temperature. Real time monitoring of temperature has become one of the important measures taken by various industries to ensure safety production and reduce losses. In specific situations, due to the scattered and remote monitoring points, traditional temperature measurement methods have long cycles and high costs, and surveyors must go to the site for measurement, resulting in very low work efficiency. High voltage equipment in the power system often experiences surface oxidation and corrosion, loose fastening bolts, aging of contacts and busbar connections during long-term operation, which often leads to equipment overheating and even explosions. However, there is exposed high voltage inside the switchgear, and the space is enclosed and narrow, making it impossible to conduct manual inspection and temperature measurement. Traditional temperature measurement methods cannot effectively solve this problem. The JC-CWS/1 wireless temperature measurement system installs a temperature sensor on the live contact inside the switchgear, measures the temperature at that point online, uploads the data wirelessly, displays it centrally, and implements an over temperature alarm. It can also be connected to the power automation system, allowing users to remotely monitor the temperature operation status of equipment. If the system detects abnormal equipment temperature, it will automatically trigger remote alarms to promptly identify potential safety hazards.

Large scale wireless busbar contact temperature online monitoring system