Portable self powered line mounted high speed camera system for overhead electric power lines
A device for attaching to an electric power line conductor includes an electrically conductive housing having an opening for accepting the power line conductor and configured to be grounded to the electric power line conductor. At least one magnetic core is configured to surround the power line conductor and power a power supply electronics module. At least one camera assembly is connected to the housing and configured to capture fault and lightning stroke images along the electric power line conductor.
1. A device for attaching to an electric power line conductor comprising:
an electrically conductive housing including an opening for accepting the power line conductor and configured to be grounded to the electric power line conductor;
at least one magnetic core configured to surround the power line conductor and power a power supply electronics module; and
at least one camera assembly connected to the housing configured to capture fault and lightning stroke images from the electric power line conductor, wherein the at least one camera assembly is electrostatically shielded by a transparent material including an electrically conductive substrate mounted within an electrically conducting corona free bezel which is mounted to the housing for preventing corona discharges when the housing is mounted on the electric power line conductor.
2. The device of claim 1 including an energy storage device configured to power the at least one camera.
3. The device of claim 1 wherein the at least one camera assembly includes a first camera assembly and a second camera assembly.
4. The device of claim 3 wherein the first camera assembly and the second camera assembly are mounted on opposite sides of the housing.
5. The device of claim 4 wherein the first camera assembly and the second camera assembly point in opposite directions.
6. The device of claim 1 wherein the transparent material is located over an outside of a lens of the at least one camera.
7. The device of claim 1 , wherein the at least one camera is electromagnetically shielded for preventing interference from the load current and fault current flowing in the electric power line conductor.
8. The device of claim 7 wherein the at least one camera is electromagnetically shielded by surrounding the at least one camera with a ferrous material.
9. The device of claim 1 wherein the at least one camera includes a telephoto lens.
10. The device of claim 1 including a global positioning sensor and clock for time stamping the fault and lightning stroke images.
11. The device of claim 1 wherein the at least one camera includes an automatic exposure control with low lux sensitivity and very high speed frame rates.