一种用于变换系统的绝缘状态检测方法及装置
By constructing a detection loop in the conversion system, using the bus capacitor or AC source as the excitation source, controlling the main power switch to remain inactive, detecting the pulse current signal on the connecting components and combining it with leakage current detection, the reliability and cost issues of insulation condition detection in medium- and high-voltage high-frequency isolation converters are solved, achieving efficient and low-cost insulation condition monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DELTA ELECTRONICS (SHANGHAI) CO LTD
- Filing Date
- 2021-08-03
- Publication Date
- 2026-07-17
AI Technical Summary
How to reliably, efficiently, and cost-effectively detect insulation status in medium- and high-voltage high-frequency isolation converters and overcome electromagnetic interference under high-frequency steep waves in the pulse current method.
By constructing a detection loop in the conversion system, using existing bus capacitors or AC sources as excitation sources, controlling the main power switch to remain inactive, detecting pulse current signals on the connecting components, and combining leakage current detection, high-frequency steep-wave electromagnetic interference is avoided, and a partial discharge signal processing unit is used to output insulation status information.
This method enables reliable, efficient, and low-cost detection of the insulation status of isolation transformers in a conversion system, avoiding electromagnetic interference from high-frequency steep waves and improving the reliability and accuracy of the system.
Smart Images
Figure CN115704846B_ABST