HOT STICK POWER ANALYZER
First Claim
Patent Images
1. A power analyzer system comprising:
- a housing mounted on a pole and including a channel for a power line;
a ground line extending from the housing;
a power line conductive contact;
a voltage sensor including voltage sensing circuitry connected to the power line conductive contact and the ground line;
a high voltage capacitance between the ground line and the voltage sensing circuitry;
a current sensor including windings about and spaced from the power line; and
a processing subsystem responsive to the voltage sensing circuitry and the current sensor and configured to compute power analysis metrics.
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Abstract
A hot stick power analyzer includes a housing mounted on a pole and a channel for a power line. A ground line extends from the housing and there is a power line conductive contact. A voltage sensor includes voltage sensing circuitry connected to the power line conductive contact and the ground line. There is a high voltage capacitance between the ground line and the voltage sensing circuitry. A current sensor includes windings about and spaced from the power line. A processing subsystem is responsive to the voltage sensing circuitry and to the current sensor and is configured to compute power analysis metrics.
10 Citations
18 Claims
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1. A power analyzer system comprising:
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a housing mounted on a pole and including a channel for a power line; a ground line extending from the housing; a power line conductive contact; a voltage sensor including voltage sensing circuitry connected to the power line conductive contact and the ground line; a high voltage capacitance between the ground line and the voltage sensing circuitry; a current sensor including windings about and spaced from the power line; and a processing subsystem responsive to the voltage sensing circuitry and the current sensor and configured to compute power analysis metrics. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A hot stick power analyzer comprising:
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a pole; a housing mounted on the pole and including a ground line and a power line conductive contact; a voltage sensing circuit in the housing connected to the ground line and the conductive contact; a high voltage capacitor between the ground line and the voltage sensing circuit; and a current sensor including windings inside the housing spaced from the power line. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method of calibrating the output of a non-grounded power line mounted sensor, the method comprising:
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using a hot stick meter to connect the power line to a voltage sensing circuit grounded via a high voltage capacitance and to sense current in the power line using current sensor windings spaced from the power line; computing power analysis metrics from a voltage level sensed by the voltage sensing circuit and a current level sensed by the current sensor; and using said computed power analysis metrics to calibrate the output of the non-grounded power line mounted sensor. - View Dependent Claims (17, 18)
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Specification