Abstract
High-voltage transmission lines are responsible for transmission of electric power. Their sag and electric current are important parameters for transmission-line monitoring. In this paper, a simple and promising method based on magnetoresistive sensors is proposed for transmission-line monitoring. This is a noncontact method and its installation is simple without the need for power cut. The method involves measuring emanated magnetic field from a line conductor at the ground level and, then, calculating the source position and current inversely. A proof-of-concept laboratory setup was constructed and a series of experiments were carried out for demonstration. This method can handle complicated transmission-line configuration by integrating the stochastic optimization approach into the inverse electromagnetic calculation. It was tested with the computational simulation of a 500 kV transmission-line configuration. The result shows the feasibility of using this transmission-line monitoring method in reality.
| Original language | English (US) |
|---|---|
| Article number | 6027821 |
| Pages (from-to) | 2608-2611 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 47 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 2011 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
Keywords
- Galloping
- magnetoresistive (MR) sensors
- overhead transmission lines
- sagging
- smart grid