Research on Power Supply Reliability of Power Equipment Status Monitoring Device Under Low Temperature Conditions

Heilongjiang, Mongolia, and other regions are located in high latitude areas, with low winter temperatures and long duration. The state monitoring device is an important device to ensure the stable operation of power equipment, and low temperature seriously threatens its reliability. Among the many reasons that lead to the failure of monitoring devices at low temperatures, the decrease in power supply reliability is the most serious one. This article provides an in-depth analysis of the types and low-temperature performance of monitoring device power supplies, explores the impact of low-temperature on power supply reliability, and develops reliable heating methods for monitoring device battery design. The results indicate that low temperature leads to a significant decrease in battery discharge capacity and voltage, which makes it difficult to maintain power supply reliability. The main reason for this problem is that the electrolyte viscosity of the battery increases, leading to an increase in polarization during discharge. The developed battery heating structure can ensure stable power supply of the battery at −40 °C without affecting equipment operation. The research in this article provides technical support for improving the overall low-temperature performance of the status monitoring device power supply and equipment.