一种基于直流叠加原理的绝缘监测用解耦柜及其方法
By decoupling the high-voltage choke coil and capacitor, and combining the control of the thyristor and contactor, AC/DC decoupling of the neutral point of the power system is achieved, solving the coupling problem caused by DC superposition, and ensuring accurate monitoring of insulation resistance and system stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHUHAI WANLIDA ELECTRICAL AUTOMATION
- Filing Date
- 2023-12-28
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, when DC voltage is superimposed on a power system, it couples with the AC power system, causing the neutral point to be connected to ground, making it impossible to effectively monitor the system's insulation resistance.
High-voltage choke coils and high-voltage capacitors are used to achieve AC/DC decoupling between neutral points in the power system. Decoupling control is achieved through the conduction of bidirectional thyristors and contactors. Combined with the insulation monitoring device JRJC, the insulation status of the power system is monitored.
This solution addresses the DC overload problem caused by AC/DC coupling, enables accurate monitoring of the insulation resistance of the power system, improves system safety and stability, and reduces the impact of faults.
Smart Images
Figure CN117791320B_ABST