期刊
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
卷 63, 期 2, 页码 614-621出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TEMC.2020.3015248
关键词
Pulse generation; Transient analysis; Testing; Surges; Impedance; Arresters; Metal oxide surge arrester (MOA); pulsed current injection (PCI); transient electromagnetic disturbance (TED)
资金
- Key Research and Development Program of Shaanxi [2019ZDLGY18-02]
The study investigated the performance of three types of 10 kV MOAs under TED with different rise times, demonstrating that the rise time of TED has a significant impact on the peak voltage and impedance converting behaviors of MOAs. The findings suggest that a circuit model of 10 kV MOAs under nanosecond-level TED can be applied in insulation coordination and design of protective devices against TED.
Nanosecond-level transient electromagnetic disturbance (TED), including very fast transient overvoltage caused by operation of disconnectors, high-altitude electromagnetic pulse, and many other fast transients may interfere or even damage the electrical equipment. As one of the main overvoltage protective equipment, the protective performance of metal-oxide surge arresters (MOAs) under nanosecond-level TED should be investigated and then compared with that under microsecond-level TED, especially the lightning impulse. Based on a testing platform containing a 400-kV pulse generator with adjustable rise time from 5 to 100 ns, the behaviors of nonlinearity, fast impulse response, and converting impedances of three types of 10-kV MOAs under TED with different rise time were explored experimentally in this article. The peak residual voltages of 10-kV MOAs under TED with the rise time of 5 ns at 5 kA are 50.2-60.7% higher than those under the lightning impulse. The rise time of TED has significant influence on the peak voltage and impedance converting behaviors of MOAs. A circuit model of 10-kV MOAs under nanosecond-level TED is built and validated by experimental results, which can be applied in insulation coordination and design of protective devices against TED.
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