Test platform and test method for extra-high-voltage direct-current deep well grounding electrode

Abstract

The invention discloses a test platform and a test method for an extra-high-voltage direct-current deep well grounding electrode. The test platform comprises an equal-ratio scaling deep well groundingsystem, an isolated direct-current power supply, a measurement control system, a current test wire, a voltage test wire and a remote temporary grounding electrode, wherein one end of the isolated direct-current power supply is connected with the equal-ratio scaling deep well grounding system, and the other end is connected with a remote temporary grounding electrode through a current test wire and a voltage test wire to simulate the operation condition of single-pole grounding of an extra-high voltage direct-current transmission line. The measurement control system is used for monitoring operating parameters in the equal-ratio scaling deep well grounding system, wherein the operating parameters comprise current and temperature. According to the invention, a loop is formed between the equal-ratio scaling deep well grounding system and the remote temporary grounding electrode through the ground so as to simulate the operation condition of single-pole grounding of the extra-high voltagedirect current transmission line, and experimental research can be actually carried out on the grounding of the extra-high voltage direct current deep well grounding electrode.

Description

technical field [0001] The invention relates to the technical field of UHV grounding, in particular to a test platform and a test method for UHV DC deep well grounding electrodes. Background technique [0002] China's energy and load centers are characterized by unbalanced distribution between the east and the west. About 90% of China's hydropower developable installed capacity is concentrated in the southwest, central south and northwest regions, 80% of coal resources are concentrated in the northwest and north China, and high-quality wind, solar and other new energy power generation is also mainly concentrated in northwest China. At the same time, China's power load centers are mainly located in Beijing, Tianjin, and the eastern and southern coastal developed areas. Therefore, power transmission from west to east is the main strategic policy of China's energy layout. UHV DC transmission has unique advantages in long-distance, large-capacity power transmission and grid int...

AI Technical Summary

Problems solved by technology

However, there is currently no effective test method for deep well grounding electrodes, and the research on deep well grounding electrodes is mainly based on theoretical simulation. Therefore, it is urgent

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