Ground inherent resistance measuring device using three electrodes for power distribution and method thereof
A technology of inherent resistance and measuring device, applied in the direction of grounding resistance measurement, etc., can solve the problems of inconvenient wiring and small scale
Inactive Publication Date: 2010-06-23
KOREA ELECTRIC POWER CORP
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Problems solved by technology
[0017] However, in terms of application, the 4-electrode method of the prior art has more than 4 electrodes, so it is inconvenient when wiring, and it is necessary to perform repeated measurements many times, which is suitable for a wide range of regions. On the contrary, power distribution engineering Compared with power transmission and transformation equipment, the unit equipment for grounding design and engineering is small in scale and scattered in various places. It is necessary to measure the inherent resistance of the unit site where the grounding rod is buried, and it is easy to carry and measure.
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[0034] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
[0035] Figure 7 It is a block diagram showing the configuration of a ground resistivity measurement device for power distribution using three electrodes according to an embodiment of the present invention, Figure 8 yes means Figure 7 A diagram of a spiral ground electrode.
[0036] As shown in the figure, it is characterized in that it includes: a power supply part (10), which is used to supply power; a spiral ground electrode (20), which receives the power supplied from the power supply part (10), and is configured as a spiral, And be used in the estimation of the inherent resistance of the earth based on the 3-electrode method; The ground resistance value measuring part (30) measures the ground resistance value of the spiral ground electrode (20); A / D (Analogto Digital, analog / digital) conversion The part (40) converts the analog ground resistance value ...
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The present invention provides a ground inherent resistance measuring device using three electrodes for power distribution and a method thereof. The ground inherent resistance measuring device using three electrodes for power distribution comprises a power source supplying part for supplying a power source, a spiral earth electrode for receiving the power source supplied from the power source supplying part to form a spiral type and be used in the presumption of a ground inherent resistance based on three-electrode method, an earth resistance value measuring part for measuring the earth resistance value of the spiral earth electrode; an A / D converting part for converting the simulative earth resistance value measured by the earth resistance value measuring part into a digital signal; a three- electrode presuming part for presuming the ground inherent resistance based on three-electrode method according to the earth resistance value converted by the A / D converting part, and a display part for displaying the ground inherent resistance presumed by the three- electrode presuming part.
Description
technical field [0001] The present invention relates to the measurement of the inherent resistance of the earth, in particular to the measurement of the inherent resistance of the earth, which is the most basic but most easily overlooked in the construction of power distribution projects. Only using the 3-electrode method can not only measure the grounding resistance, but also the inherent resistance of the earth. Earth intrinsic resistance measuring device and method for power distribution using 3 electrodes of resistance. Background technique [0002] Generally, in the engineering design and construction of power transmission and transformation systems such as substation grounding and iron tower grounding, there is Wenner's 4-electrode method (proposed in 1915) as a method for solving the inherent resistance of the earth. [0003] However, since there are more than 4 electrodes (there are also 5), it is inconvenient to install the measuring device, and it is necessary to r...
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Inventor 黄修天
Owner KOREA ELECTRIC POWER CORP