In industrial production and energy dispatch, power equipment acts as the “heart.” Once a fault occurs, at best it causes production stoppages, and at worst it triggers fires or explosions. The culprit behind most power accidents is often hidden in an invisible, intangible phenomenon—partial discharge (PD). PD is an early sign of insulation aging in medium- and high-voltage equipment. It does not immediately trip the breaker, but silently accelerates insulation deterioration. It is hidden, progressive, and destructive, directly threatening the safe operation of core equipment such as switchgear.

Currently, PD monitoring for switchgear and similar equipment still relies mainly on manual inspections and periodic preventive tests, supplemented by single ultrasonic or transient earth voltage detection. Real-time monitoring methods are scarce, making hazards difficult to detect. Once a breakdown occurs, enterprises face production shutdowns, emergency repairs, huge losses, and even safety accidents. To solve this problem, we have launched the “Electric Guardian · GaN Partial Discharge Early Warning System,” leveraging the unique properties of the third-generation semiconductor material—gallium nitride (GaN). This allows us to “see” invisible partial discharge, turning power hazards from “unknown” to “predictable,” and shifting from “passive repair” to “active early warning.”

1. Empowered by GaN, Accurately Capturing PD Signals

Traditional PD detection often relies on electromagnetic or current signals, which are susceptible to on-site noise and electromagnetic interference, resulting in high false-positive and false-negative rates. The “Electric Guardian · GaN Partial Discharge Early Warning System” uses a GaN optical sensor that captures multi-dimensional characteristic signals generated by PD, including ultraviolet light, ultrasound, and ozone, enabling extremely early identification of hazards. The system employs purely optical detection, completely eliminating electromagnetic and noise interference, ensuring stable and reliable signals. With a sensitivity as high as 0.18 A/W, it can issue warnings as soon as PD begins. Meanwhile, it integrates multi-dimensional sensing with AI models, achieving false-negative and false-positive rates both below 0.1%, providing highly accurate identification. In terms of installation and operation, the product uses non-contact monitoring, never connecting to high voltage, completely eliminating the risk of electric shock to personnel. It supports 24/7 all-weather online operation without the need for manual attendance.

2. From “Repair” to “Early Warning”: Reducing Losses and Enhancing Efficiency

 The value of the “Electric Guardian · GaN Partial Discharge Early Warning System” lies not only in its technical specifications but also in tangible business returns. By warning of PD hazards weeks in advance, enterprises can schedule planned maintenance calmly, avoiding sudden insulation breakdowns that lead to power outages and production halts, thus significantly reducing production losses. Moreover, reducing unexpected faults extends equipment life, significantly cuts repair and replacement costs, and prevents operational and maintenance expenses from skyrocketing. More importantly, it curbs fire and explosion risks at the source, safeguarding employee lives and corporate property. For continuous-production industries such as petrochemicals, power grids, and new energy, the product effectively improves power supply reliability, truly achieving uninterrupted production, controllable safety, and minimized losses.

3. Wide Applicability, Validated by Leading Customers Across Industries

The “Electric Guardian · GaN Partial Discharge Early Warning System” has been widely applied in industries with extremely high power safety requirements, including petrochemicals, industrial parks, energy and mining, power grids, steel smelting, and new energy. Typical installation scenarios include high-voltage switchgear cable exit rooms, high-voltage ring main units, motor terminal boxes and end windings, box-type substation high-voltage compartments, new energy storage cabinets, cable wells, and cable trenches. The product has been validated through practical applications by leading customers in multiple industries, including China Southern Power Grid, China Tobacco, Sinopec, China Coal Group, Baowu Steel Group, Chinalco, China Energy Investment Group, Yanchang Petroleum, Sichuan Coal Group, and Dongfang Electric. These customers have tested the product’s stability and practicality in harsh industrial environments, proving that it can truly achieve “one installation, 24/7 power safety protection.”

Power safety cannot wait until a fault occurs to be repaired. Bangandi’s “Electric Guardian · GaN Partial Discharge Early Warning System” uses advanced optical sensing and AI technology to extend the early warning window for power hazards from “hours” to “weeks,” truly stopping power faults before they happen. If you want your enterprise’s power distribution system to shift from “passive response” to “active defense,” please contact us (400-8989-611) for more product details and deployment solutions.