A Method for Measuring Grounding Resistance of Grounding Grid
A technology of grounding resistance and grounding grid, which is applied in the direction of grounding resistance measurement, etc., can solve the problems of increasing the overall cost of the project, complex grounding grid environment, and many accidents, and achieve the effects of reducing project cost risk, low measurement cost, and wide application range
Inactive Publication Date: 2011-12-28
成都桑莱特科技股份有限公司
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[0002] The grounding resistance measurement method of the grounding grid of the power plant or substation in the prior art generally adopts the measurement after the installation and construction of the grounding grid is completed on site. This measurement method has no predictability for the grounding resistance value of the grounding grid There is also blindness in the improvement of the follow-up grounding grid. For example, the publication number of the invention patent application is CN101900764A, and the name of the invention is the method of measuring the grounding resistance of the grounding grid using the short-distance measurement method. It is stated in the background technology that most power departments use the grounding resistance measurement method And the length of the current electrode lead is required to be 4-5 times the length of the substation. For example, for the groun...
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[0019] The present invention will be further elaborated below in conjunction with the accompanying drawings.
[0020] A method for measuring the grounding resistance of the grounding grid provided by the present invention operates according to the following steps:
[0021] Step 1. Make the grounding grid scale model according to the proportion of the actual design grounding grid, wherein the simulation ratio needs to be selected and determined according to the actual situation and data of the site geological survey. The matching ratio adopted in this embodiment is 1:200, where The production method of the scale model is as follows: the single metal electrode of the grounding grid is connected by soldering to form a grounding grid system. The grounding grid system is reduced according to the simulated scale of the measured grounding grid. Reliability and high conductivity of electrode connection points;
[0022] Step 2. Prepare the model conductive medium according to the grou...
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The invention discloses a method for measuring the grounding resistance of a grounding grid, which belongs to a method for measuring the grounding resistance of a grounding grid in a power plant and a substation. Geological survey soil resistivity or water conductivity to prepare model conductive medium; according to the electric field geometric simulation theory of Laplace equation, the length of the grounding grid can be enlarged in equal proportions at the beginning of the design of the repower plant or distribution station project Or shrink, provide improvement measures for the design of the grounding grid, predict the grounding resistance after the grounding grid is installed, and optimize the design when the performance of the grounding resistance is met, further reduce the project cost risk, and the measurement cost is disclosed, which realizes The technology of measuring the grounding resistance of the grounding network is economical, and the invention can be directly applied to various electric places, and has a wide range of applications.
Description
technical field [0001] The invention relates to a method for measuring the grounding resistance of a grounding grid, in particular to a method for measuring the grounding resistance of a grounding grid. Background technique [0002] The grounding resistance measurement method of the grounding grid of the power plant or substation in the prior art generally adopts the measurement after the installation and construction of the grounding grid is completed on site. This measurement method has no predictability for the grounding resistance value of the grounding grid There is also blindness in the improvement of the follow-up grounding grid. For example, the publication number of the invention patent application is CN101900764A, and the name of the invention is the method of measuring the grounding resistance of the grounding grid using the short-distance measurement method. It is stated in the background technology that most power departments use the grounding resistance measurem...
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Inventor 陈范娇林晓光
Owner 成都桑莱特科技股份有限公司
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