一种水力发电机组多分支绕组接地故障快速定位的方法
By disconnecting the faulty phase of the hydroelectric generator set, installing fiber optic current transformers to measure the current and calculate the voltage, the grounding fault of multiple branch windings can be quickly and accurately located, solving the problem of difficult grounding fault location in hydroelectric generator sets and improving maintenance efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA THREE GORGES PROJECTS DEV CO LTD
- Filing Date
- 2024-04-28
- Publication Date
- 2026-07-17
AI Technical Summary
Grounding faults in multiple branch windings of hydroelectric generator sets are difficult to locate quickly, resulting in long downtime, high costs, and low efficiency for maintenance, which affects energy supply and grid security.
By disconnecting the soft connection of the faulty phase, installing a fiber optic current transformer to measure the current value, setting the voltage at both ends of the branch using a variable frequency AC power supply, and calculating the location of the faulty conductor, rapid and accurate positioning can be achieved.
It eliminates the need to remove external insulation, significantly reducing the workload of unit dismantling, quickly locating grounding fault points, improving maintenance efficiency, reducing economic losses, and enhancing energy supply and power system security.
Smart Images
Figure CN118425767B_ABST