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逆变器及其地线异常检测方法和系统
InventionUnknown
10Claims · 3 independent
§ Ⅰ
Dossier Overview
Inventor
贾艳明; 周福星; 郑晓波
Filing Date
Aug 24, 2026
Publication Date
Oct 27, 2026
IPC Classification
G01R 31/52 (2020.01)G01R 31/58 (2020.01)
本发明公开一种逆变器及其地线异常检测方法和系统,其中,逆变器地线异常检测方法包括调整逆变器中的三相电容的对称性,以使调整后的对称性失衡;检测中性线对地线的工频零地电压;根据工频零地电压,判断地线的接地情况;若地线存在接地异常情况,则发出告警信息。本发明技术方案解决了传统检测方案中N‑PE电压始终为零而导致无法判断PE接地状况的问题,有效减少触电风险,极大地提高了逆变器的安全性。
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