Apparatus and Method for Three-Pole Type Measuring Specific Soil Resistance Measurement for Distribution Grounding
AssigneeKorea Electric Power Corporation
InventorSoo Chun Hwang
Life of this patent
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Abstract
Disclosed herein is an apparatus and method for measuring a specific soil resistance for distribution grounding by a three-electrode method. The apparatus uses three electrodes to measure a specific soil resistance as well as an earth resistance based on a three-electrode method in specific soil resistance measurement that is the most basic but likely to be overlooked in a practical distribution work.
Claims5
An apparatus for measuring a specific soil resistance for distribution through three electrodes, comprising:
- a power supply;
- a screw-type grounded electrode configured to receive power from the power supply and used in estimating the specific soil resistance by a three-electrode method;
- an earth resistance tester configured to measure an earth resistance of the screw-type grounded electrode;
- an A/D converter configured to convert an analog signal of an earth resistance measured by the earth resistance tester into a digital signal;
- a three-electrode method estimator configured to estimate the specific soil resistance using the three-electrode method based on the earth resistance converted by the A/D converter;
- and
- a display configured to display the specific soil resistance estimated by the three-electrode method estimator.
A method of measuring a specific soil resistance for distribution through three electrodes, the method comprising:
- measuring an earth resistance value through a screw-type grounded electrode based on a three-electrode method;
- converting a signal of the measured analog earth resistance value into a signal of a digital earth resistance value;
- and
- estimating the specific soil resistance by the three-electrode method based on the converted signal of the digital earth resistance value.
Dependencies are inferred from the claim text.