Series resonance test device: technical principles, applications, and future development

Recently, our company's technical team conducted in-depth learning and research on the series resonance test device, aiming to further improve equipment performance and optimize the detection process of power equipment. Through this learning experience, we have gained a deeper understanding of the technical principles, application scenarios, and future development directions of the series resonance test device.

1、 Technical principle of series resonance test device

The series resonance test device is based on the resonance characteristics of the RLC series circuit. By adjusting the circuit parameters or power frequency, the capacitance and inductance in the circuit are made equal, thereby achieving voltage and current in phase, and the circuit exhibits pure resistance. In the resonant state, the total impedance of the circuit is minimized, the current reaches its maximum value, and the voltage on the reactive element is highest. This characteristic is called "voltage resonance". The core components of the device include variable frequency power supply, excitation transformer, reactor, and capacitive voltage divider. Through frequency modulation power output, the device can generate a test voltage that is Q times higher, suitable for withstand voltage testing of high-capacity and high-voltage capacitive specimens.

 

（1）Excellent experimental waveform: The series resonant circuit has a suppression effect on high-order harmonics, and the output waveform is close to a pure sine wave with low distortion rate, suitable for high-precision testing.

（2）High safety: When the test sample experiences breakdown or flashover, the circuit immediately loses resonance, the high voltage quickly disappears, and the accident is avoided from expanding.

（3）Lightweight and flexible equipment: Compared with traditional power frequency test transformers, the series resonant device has a small volume and light weight, making it easy to transport and combine on-site.

（4）Energy saving and efficient: The power required for the experiment is only 1/Q of the test capacity, significantly reducing energy consumption.

（1）High voltage cable AC withstand voltage test: suitable for the handover and preventive testing of 6kV-500kV high-voltage cross-linked cables.

（2）Power frequency withstand voltage test of transformers: used to test the insulation performance of transformers and ensure their safe operation.

（3）GIS and SF6 switch test: Conduct voltage withstand test on gas insulated switchgear to verify its insulation strength.

（4） Generator Test: Used for AC withstand voltage testing of generators to ensure the safety and reliability of power generation equipment.

（1）Intelligent upgrade: Combining IoT technology to achieve remote monitoring and data analysis of devices, improving operation and maintenance efficiency.

（2）Multi functional integration: Develop integrated equipment that combines voltage withstand testing, partial discharge detection, and other functions to meet diverse testing needs.

（3）Green energy conservation: Further optimize circuit design, reduce energy consumption, and promote the development of green power detection technology.

5、 Conclusion

The series resonance test device, as an important tool for detecting power equipment, has been widely recognized for its technical advantages and application value. In the future, our company will continue to deepen technological innovation, promote further improvement of equipment performance, and contribute to the safe and efficient operation of the power industry.

The above press release combines the technical principles, application scenarios, and future development directions in search results, aiming to provide users with comprehensive and professional content. If further adjustments are needed, please let us know at any time!