As a core piece of equipment in new energy power generation systems, the stable operation of converter-boost transformer units directly affects the power plant's power generation efficiency and grid connection quality. This equipment integrates inverter and boost functions, featuring a compact structure and synergistic functionality. However, due to the large number of power electronic components and transformer parts it contains, it is quite sensitive to environmental changes and long-term operating loads. Therefore, establishing a scientific and standardized daily maintenance mechanism is crucial for extending equipment lifespan and reducing failure rates.
The primary task of daily maintenance is to keep the equipment's exterior and cooling system clean and unobstructed. Converter-boost units are typically installed outdoors or semi-outdoors, where dust, mud, bird droppings, and plant debris easily accumulate on the surface. If the radiator grille or air duct is obstructed, heat will accumulate, affecting the normal operating temperature of the inverter module and transformer, and may even trigger overheat protection. It is recommended to regularly inspect the casing and cooling devices, using a dry, soft cloth or low-pressure compressed air to remove dirt, and to operate only after the equipment is powered off and safety is ensured. For liquid-cooled models, it is also necessary to check the coolant level and pipeline sealing to prevent leaks or air intake that could cause poor circulation.
Secondly, monitoring of electrical connections and insulation is crucial. During long-term operation, thermal expansion and contraction, mechanical vibration, or environmental factors can cause terminals to loosen, oxidize, or corrode, increasing contact resistance and potentially leading to localized overheating or voltage drops. During inspections, focus on checking the main circuit and control circuit wiring for tightness, discoloration, burning, or unusual odors. If any abnormalities are found, immediately disconnect the power and have a professional inspect and repair it. Outdoor installations, including seals, cable inlets, and protective covers, also require regular inspection to ensure their moisture and dust resistance meet standards, especially during rainy seasons or in high-humidity environments.
Real-time monitoring of equipment operating parameters is a vital part of daily maintenance. The integrated monitoring system can continuously collect data such as voltage, current, power, temperature, and operating status, and also has alarm push functions. Operators should check the platform interface daily or on a shift basis, paying attention to any abnormal fluctuations or frequent alarms, such as excessively high inverter unit temperature, sudden drops in output power, or abnormal transformer oil temperature. They should quickly analyze the causes based on the environmental and operating conditions, and conduct on-site verification if necessary.
In addition, regular inspections of the mechanical structure and protective facilities should be conducted. This includes checking the stability of the support brackets, the integrity of the anti-corrosion coating on the enclosure, and the reliability of the lightning protection grounding connection to cope with extreme weather conditions such as strong winds, heavy rain, hail, and lightning. For equipment that is exposed to high salt spray, high humidity, or high dust concentration environments for extended periods, a comprehensive maintenance should be considered before or after seasonal changes or extreme weather events, including rust prevention treatment and sealing reinforcement.
All maintenance operations must strictly adhere to electrical safety regulations, implementing work approval and power-off testing procedures. Opening covers while the power is on or unauthorized disassembly is strictly prohibited. It is recommended to establish an inspection and maintenance log, recording the time, content, and results in detail to provide a basis for subsequent trend analysis and preventative maintenance.
Through systematic daily maintenance, including appearance cleaning, connection inspection, parameter monitoring, and structural protection, the stable operation of the converter-boost unit in complex environments can be effectively ensured, thereby improving the overall reliability and economy of new energy power plants.
