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With the increasing attention paid to reactive power problem, more and more enterprises use power capacitors for reactive power compensation. However, in the compensation process of power capacitor, there will be oil leakage, bulging, abnormal temperature rise, and even fire and explosion accidents. So what are the factors related to the failure of the power capacitor in operation?

1, capacitor qualityThe quality of capacitor is the main reason for the failure of power capacitor in operation. Under normal circumstances, good quality power capacitors can be used for a long time; Capacitors with poor quality will fail frequently after running for a period of time. Therefore, choosing a high-quality power capacitor can effectively reduce the failure rate.

2. Voltage and currentOperating voltage and operating current also have a great influence on power capacitors. Long-term overvoltage and overcurrent operation will accelerate the electrical and thermal aging of the capacitor insulating medium, resulting in failure during operation. Therefore, when the power capacitor is running, it is very necessary to control the operating voltage, operating current and other parameters.

3. Ambient temperature and capacitor internal temperatureIn general, power capacitors need to operate within a specified temperature range. If the ambient temperature is too high, it will accelerate the thermal aging of the capacitor insulating medium, reduce its insulation performance, and lead to its failure. In addition, power capacitors generate heat during operation, and if the internal temperature of the capacitor is too high, it will also lead to capacitor failure.

4. Power grid harmonicsWith the application of power electronic devices, harmonic problems in enterprise power grid are becoming more and more serious. When the power capacitor is running, the network harmonics will react with the capacitor, and harmonic amplification and resonance will occur, resulting in capacitor failure during operation.

5. Improper operationIn the process of transportation, installation and use of power capacitors, improper operation of electrical personnel can also lead to capacitor failure. For example, a power capacitor with charge closing will cause a capacitor explosion.Capacitor quality, operating voltage, operating current, ambient temperature, network harmonics and the operation of electrical personnel may lead to the failure of power capacitor operation. Therefore, enterprises should pay attention to these problems when compensating for reactive power.Zhejiang Yishuo Electric Co., Ltd. is a high-tech company specializing in research and development, design, production, sales and service of low-voltage power capacitors, intelligent capacitors, reactors, reactive power compensation controllers and reactive power compensation devices.The company adheres to the purpose of "science and technology as the driving force, quality and development", and is committed to building a leading brand of smart grid professional services.The company has a high-level R & D management team, integrating R & D, production, sales and service, focusing on intelligent reactive power compensation, harmonic control, energy saving and power quality management and other power automation high-tech industries. The main products are low voltage intelligent capacitors, harmonic suppression intelligent capacitors, power capacitors, electricity information collection terminal, multi-function intelligent distribution box and intelligent distribution network series.Over the years, we have adhered to the mission of "making products intelligent and services intimate". In line with the high sense of responsibility to the society and users, Yishuo Electric adheres to the road of specialization, continues to innovate beyond, and strives to make greater contributions to China's smart grid power automation.