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Partial Discharge Detection: An Effective Solution Using Acoustic Technology


Partial Discharge (Partial Discharge) is a common but easily overlooked problem in electrical equipment. Partial discharge can cause damage to electrical equipment, leading to equipment failure and downtime, which can have a serious impact on productivity and safety. Therefore, early detection and prevention of partial discharge becomes one of the important steps to protect equipment. Acoustic technology is widely used in partial discharge detection, and its high sensitivity and non-invasive features make it a very effective solution.


The background and significance of Partial Discharge:

Partial discharge refers to the partial electrical discharge phenomenon that occurs in electrical equipment. It may be caused by defects in equipment insulation, material aging, excessive voltage or poor environmental conditions. While partial discharge may be a minor discharge event, over time it can damage insulation, increase the risk of equipment failure, and negatively impact equipment reliability and operational safety.


Requirements for partial discharge detection:

To ensure the operational reliability and safety of electrical equipment, it is essential to regularly detect partial discharges. By early detection and monitoring of partial discharge phenomena, we can take appropriate measures in time to repair defects and prevent equipment failures from occurring. This helps increase equipment longevity and reliability while reducing maintenance costs and downtime.


Advantages of sonic detection technology:

Sonic wave detection technology is a commonly used non-destructive detection method in partial discharge detection. It is based on acoustic signals generated by partial discharges, which are captured and analyzed by sensors to detect and evaluate the presence and severity of partial discharges. Acoustic detection technology has the following advantages:

  • High Sensitivity: Acoustic detection can detect weak partial discharge signals, and can be accurately identified even in environments with high background noise.

  • Non-intrusive: Sonic detection does not require disconnection of the device or destructive testing and therefore does not interfere with or risk the operation of the device.

  • Real-time monitoring: Acoustic detection technology can monitor partial discharge in real time and provide critical equipment status information for timely action.


Application fields of partial discharge detection:

Partial discharge detection is used in a wide variety of applications including power plants, substations, manufacturing, and more. In power plants, partial discharge detection can be used to monitor generator insulation systems to ensure their reliability and safety. In substations, partial discharge detection can help monitor the health of high voltage switchgear. In manufacturing, partial discharge testing can be used to check the quality and consistency of insulating materials and ensure product quality. Partial discharge detection is one of the important measures to protect electrical equipment.

Partial discharge detection using acoustic wave detection technology has the advantages of high sensitivity, non-invasiveness and real-time monitoring. Through regular testing and monitoring, we can detect partial discharge problems early and take corresponding remedial measures, thereby improving equipment reliability and operational safety.


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