The preventive measures for the capacity attenuation of power capacitors are crucial in the application of power capacitor banks. Here are some of the main preventive measures:
Control operating conditions:
Temperature control: Ensure that the capacitor operates within the temperature range recommended by the manufacturer. Excessive temperature will accelerate the aging of the internal materials of the capacitor, resulting in capacity attenuation. Appropriate heat dissipation measures need to be taken, such as increasing ventilation, using heat sinks, etc.
Voltage and current control:
Avoid capacitors from operating under overvoltage or overcurrent conditions. Overvoltage or overcurrent can cause electrical breakdown or overheating of the internal components of the capacitor, thereby accelerating capacity attenuation. Ensure that the operating voltage and current of the capacitor do not exceed their rated values.
Select high-quality capacitors:
Choose capacitors with excellent manufacturing processes, high-quality materials and good packaging technology.ZDDQ capacitors generally have higher stability and longer service life, and can resist the influence of environmental changes and fluctuations in operating conditions.
Regular inspection and maintenance:
Perform regular inspections on capacitors, including capacity inspections, insulation resistance inspections and withstand voltage inspections. These inspections can help to promptly detect problems with capacitors, such as capacity attenuation, insulation performance degradation, etc., so as to take corresponding maintenance measures.
Promptly repair or replace problems found during the inspection. Avoid using capacitors that have aged or been damaged to prevent them from further affecting the stability and reliability of the power system.
Reasonable installation and layout:
When installing capacitors, it is necessary to follow the manufacturer's installation guidelines and the requirements of the power system. Ensure that the spacing, ventilation and heat dissipation conditions between capacitors meet the regulations to prevent capacity attenuation caused by improper installation. Reasonable layout can reduce the mutual influence and interference between capacitors and improve the operating efficiency and stability of capacitors.
Improvement of protection measures:
Equip capacitors with appropriate protection devices, such as fuses, circuit breakers, etc. These protection devices can cut off the power supply in time when the capacitor fails, prevent the fault from expanding and protect the safety of other equipment. Regularly check the operating status of the protection equipment to ensure its normal operation.
Training and education:
Train and educate the operation and maintenance personnel of the power system to improve their professional knowledge and skill level. Enable them to operate and maintain capacitors correctly and find and solve problems in time.
Data recording and analysis:
Establish a recording and analysis system for capacitor operation data. By regularly recording the operating data of the capacitor, such as temperature, voltage, current, etc., the operating status and capacity attenuation trend of the capacitor can be analyzed. This helps to detect problems in time and take appropriate preventive measures.
By controlling operating conditions, selecting high-quality capacitors, regular inspection and maintenance, reasonable installation and layout, perfect protection measures, training and education, and data recording and analysis, the problem of power capacitor bank capacity attenuation can be effectively prevented and the stability and reliability of the power system can be improved.
