一种用于配电电缆局放带电定位的电磁脉冲注入装置
By using an electromagnetic pulse injection device, non-invasive dual-end synchronous detection of partial discharge in power distribution cables can be achieved without opening the switch cabinet or ring main unit. This solves the problem of large errors in existing technologies and improves detection accuracy and operation and maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XI AN JIAOTONG UNIV
- Filing Date
- 2023-03-02
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for detecting partial discharge in power distribution cables cannot achieve simultaneous detection at both ends without opening the cabinet doors when the terminal shielding grounding wires at both ends of the cable are installed in switch cabinets or ring main units. This results in large errors, frequent misjudgments, and difficulty in effectively guiding operation and maintenance work.
An electromagnetic pulse injection device is used to generate a high-intensity electromagnetic pulse signal through a lithium battery unit, an energy storage capacitor unit, a voltage converter unit, a high-speed power switch unit, and an electromagnetic pulse transmitter unit. The signal is transmitted to the inside of the cabinet through the gap on the door of the switch cabinet or ring network cabinet and coupled to the cable line, thus achieving non-invasive dual-end synchronous detection.
It enables precise location of partial discharge in cables without opening the switch cabinet or ring main unit, reduces synchronization error to the nanosecond level, improves detection accuracy and maintenance guidance, and reduces manpower and material consumption.
Smart Images
Figure CN116359665B_ABST