Recently, our company successfully completed induced withstand voltage and Partial Discharge (PD) testing on a main transformer at a 110kV substation in Wuhan. For this project, we utilized our proprietary, self-developed integrated system for induced withstand voltage testing with ultra-low partial discharge levels (450kW class). By tailoring our approach to the complex on-site operating conditions, we successfully achieved our testing objectives: high efficiency, exceptional stability, and minimal interference.
The project site was situated within an active, operational substation—a setting that imposed rigorous demands on the equipment's anti-interference capabilities, system stability, and safety protocols. Our technical team met these challenges by scientifically configuring the test circuitry, optimizing the grounding system, and integrating high-precision measurement units. Through these measures, we successfully suppressed background noise to an extremely low level, thereby ensuring the accuracy and reliability of the partial discharge detection data
Throughout the testing process, the system demonstrated stable output voltage, excellent waveform quality, and flexible frequency modulation—fully meeting the induced withstand voltage testing requirements for 110kV-class transformers. Furthermore, the system features an "Autotune" function, which effectively enhanced the voltage boosting efficiency and significantly reduced the overall testing duration. During the partial discharge measurement phase, the equipment successfully captured even the faintest discharge signals, providing critical data for assessing the transformer's insulation integrity.
The successful execution of this project serves as a powerful validation of our company's integrated capabilities in the field of high-voltage testing—encompassing a comprehensive package of "Equipment + Solutions + Services." Compared to traditional testing methodologies, our solution offers distinct advantages, including ultra-low partial discharge background noise, superior stability, intelligent operation, and exceptional adaptability to diverse field conditions. It is particularly well-suited for the commissioning and preventive maintenance testing of high-voltage equipment in urban substations and environments characterized by complex electromagnetic interference.
Moving forward, our company remains committed to deepening our expertise in high-voltage testing technologies, striving to provide the power industry with even safer, more efficient, and highly reliable inspection and testing solutions.
Wuhan Guodian Zhongxing is a leading manufacturer specializing in electrical testing equipment and high-voltage test systems. Proudly "Made in China," our products benefit customers worldwide. Should you have any inquiries or requirements, please do not hesitate to contact us at: sales@gdzxdl.com
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