研究目的
To design and implement a surge protective device (SPD) type-2 for protecting solar panels from indirect lightning strikes by managing over-voltage surges.
研究成果
The designed SPD type-2 device effectively reduces voltage surges from 750 V to 160 V using components like GDT, MOV, TVS, and Zener diodes, demonstrating its validity for protecting solar panels against indirect lightning strikes. Future work could involve testing under varied conditions and scaling for broader applications.
研究不足
The study focuses on indirect lightning strikes and low-voltage side protection; it may not address direct strikes or higher voltage scenarios. The impulse generator is limited to 750 V, which might not cover all possible surge conditions. Optimization for different environmental factors or larger systems is not discussed.
1：Experimental Design and Method Selection:
The study involved designing an impulse generator to produce high-voltage surges for testing a type-2 SPD. The SPD was designed using components like gas-discharge tubes, transient voltage suppressors, metal oxide varistors, and Zener diodes to clamp voltage surges.
2：Sample Selection and Data Sources:
The SPD was tested with voltage pulses generated by the custom impulse generator.
3：List of Experimental Equipment and Materials:
Components included varistor (20D431k), common mode choke (p1560nl), Zener diode (z2b150), transient voltage suppressor (5ke250ca), gas-discharge tube (GDT 450 V), and an impulse generator producing up to 750 V pulses.
4：Experimental Procedures and Operational Workflow:
Voltage pulses from the impulse generator were applied to the SPD. The output voltage was measured after each protective component (e.g., after GDT, then after MOV, TVS, and Zener diode) using an oscilloscope to observe voltage reduction.
5：Data Analysis Methods:
Voltage measurements were taken and compared to assess the effectiveness of the SPD in reducing surge voltages.
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