Power equipment, especially the big ones in high-voltage substations, like us humans, also need regular “health checks”. Among them, partial discharge is a very hidden yet highly destructive “health problem”. And partial discharge monitoring devices are indispensable “health inspectors” in our power system, they can timely detect these small “lesions” and safeguard the safe operation of electricity.
What is partial discharge?
Simply put, partial discharge refers to a discontinuous discharge phenomenon that occurs in a certain part of an insulating medium, usually in the gaps inside, on the surface, or near high-voltage electrodes of the insulating material. Although the energy of each discharge is small, over time, it will gradually erode the insulation material, ultimately leading to equipment insulation breakdown and causing serious power accidents. Imagine a small crack that, after years of exposure to wind, sun, and rain, could ultimately lead to the collapse of the entire house.
What are the ‘hidden forces’ behind the release of the bureau?
The occurrence of partial discharge is not accidental, and various factors may contribute to it
Aging or defects of insulation materials: As the service life increases, the performance of insulation materials will decrease, and cracks or bubbles are prone to occur.
Equipment manufacturing process: Impurities, air gaps, metal burrs, etc. left behind during the production process may become a “breeding ground” for partial discharge.
Environmental factors: harsh environments such as high temperature, humidity, and pollution can accelerate the degradation of insulation materials.
Operating conditions: Abnormal conditions such as voltage fluctuations and overload operation can also increase the risk of partial discharge.
What ‘tools’ can help us uncover the’ culprit ‘?
When it comes to partial discharge detection, professional monitoring equipment is indispensable. At present, there are various partial discharge testing methods and instruments on the market, which are like experienced “doctors” who diagnose equipment problems through different “stethoscopes” and “X-ray machines”:
High frequency pulse discharge detector: captures the electrical pulse signal generated by partial discharge, and determines the discharge intensity by analyzing the amplitude, frequency, and other information of the pulse.
Ultrasonic partial discharge device: Partial discharge generates ultrasonic waves, which can be “heard” to locate the discharge point.
Optical partial discharge detector: Some partial discharges generate ultraviolet radiation, and the presence of discharge can be determined by detecting these ultraviolet rays.
In practical applications, the partial discharge monitoring system provided by HV Hipot Electric Co., Ltd. integrates various advanced detection technologies and can provide comprehensive and accurate monitoring data.
Partial discharge monitoring is closely related to power safety
Partial discharge monitoring is a key link in ensuring the safe operation of power equipment. Through online monitoring of high-voltage equipment, we can:
Early warning: Before partial discharge causes serious damage to insulation, issue a warning signal to avoid sudden accidents.
Accurate diagnosis: Combining multiple detection data to accurately locate the discharge location and cause, providing a basis for maintenance.
Optimize maintenance: Based on monitoring results, develop targeted maintenance plans to extend equipment lifespan and reduce operation and maintenance costs.
HV Hipot Electric Co., Ltd. has rich experience in the field of power equipment diagnosis, and its partial discharge detection technology enjoys a high reputation in the industry.
How can we do better?
To maximize the effectiveness of the partial discharge monitoring device, we need to:
Scientific deployment: Reasonably select monitoring points to ensure effective coverage of key equipment and weak links.
Data analysis: Establish a comprehensive platform for partial discharge data analysis, utilizing big data and artificial intelligence technology to improve the accuracy and efficiency of diagnosis.
Regular calibration: Ensure the accuracy and reliability of partial discharge instruments, and perform regular calibration and maintenance.
Personnel training: Cultivate professional technical personnel who can proficiently operate equipment and accurately interpret data.
Through these efforts, we can better utilize partial discharge monitoring technology to provide solid guarantees for the safe and stable operation of the power system.