Method and Apparatus for Monitoring Power Transmission in an Electric Power Transmission Network
An apparatus and method for measurement of power in an electric power transmission line and disturbances in a power grid is disclosed. The apparatus comprises a magnetic field sensor with at least two sensing coils for measuring the magnetic field at the electric power transmission line and transmitting magnetic field data to a processor. The magnetic field sensor is arranged proximate to but at a distance from the electric power transmission line.
1 . An apparatus for measuring a magnetic field about an electric power transmission line located along a transmission line axis comprising:
at least two first sensing coils spaced at a first distance from each other and disposed about a first axis spaced apart from the transmission line axis.
2 . An apparatus for measuring a magnetic field about an electric power transmission line according to claim 1 , further comprising:
a processor selectably connectable to one or more of the at least two first sensing coils for producing a signal representative of the strength of the magnetic field.
3 . An apparatus for measuring a magnetic field about an electric power transmission line according to claim 1 , further comprising:
at least two second sensing coils arranged at an angle to the at least two first sensing coils.
4 . An apparatus for measuring a magnetic field about an electric power transmission line according to claim 2 , further comprising:
at least two second sensing coils arranged at an angle to the at least two first sensing coils.
5 . An apparatus for measuring a magnetic field about an electric power transmission line according to claim 1 , further comprising a position and time measuring unit.
6 . An apparatus for measuring a magnetic field about an electric power transmission line according to claim 2 , further comprising a position and time measuring unit.
7 . An apparatus for measuring a magnetic field about an electric power transmission line according to claim 3 , further comprising a position and time measuring unit.
8 . An apparatus for measuring a magnetic field about an electric power transmission line according to claim 1 , further comprising a data transmission module.
9 . An apparatus for measuring a magnetic field about an electric power transmission line according to claim 2 , further comprising a data transmission module.
10 . An apparatus for measuring a magnetic field about an electric power transmission line according to claim 5 , further comprising a data transmission module.
11 . An apparatus for measuring a magnetic field about an electric power transmission line according to claim 1 , further comprising a solar power unit.
12 . An apparatus for measuring a magnetic field about an electric power transmission line according to claim 2 , further comprising a solar power unit.
13 . An apparatus for measuring a magnetic field about an electric power transmission line according to claim 5 , further comprising a solar power unit.
14 . An apparatus for measuring a magnetic field about an electric power transmission line according to claim 8 , further comprising a solar power unit.
15 . An apparatus for measuring a magnetic field about an electric power transmission line according to claim 1 , further comprising a waterproof container enclosing the at least two first sensing coils.
16 . A method for the measurement of a magnetic field about an electric power transmission line comprising:
measuring a current induced in a first sensing coil;
measuring a current induced in a second sensing coil;
measuring a current induced in both the first sensing coil and the second sensing coil; and
calculating a value representative of a strength of the magnetic field.
17 . A method for the measurement of a magnetic field about an electric power transmission line according to claim 16 , further comprising
measuring a position of the first sensing coil and the second sensing coil.
18 . A method for the measurement of a magnetic field about an electric power transmission line according to claim 16 , further comprising
transmitting the values of the magnetic field at periodic intervals to a processor.
19 . A method for the measurement of a magnetic field about an electric power transmission line according to claim 16 , further comprising
transmitting the values of the magnetic field at periodic intervals to a processor.
20 . A method for the measurement of transmitted power in an electric line comprising:
measuring a current induced in a first sensing coil;
measuring a current induced in a second sensing coil;
measuring a current induced in both the first sensing coil and the second sensing coil;
calculating a value of the magnetic field;
calculating the transmitted power using the value of the magnetic field and a nominal voltage.