Direct-current high-voltage power supply for electrical prospecting and direct-current high-voltage acquisition method

Abstract

The invention discloses a direct-current high-voltage power supply for electrical prospecting and a direct-current high-voltage acquisition method. The direct-current high-voltage power supply comprises an alternating-current generator and M switch power supplies, wherein the M is greater than or equal to 2, the L ends of the M switch power supplies are connected with the L end of the alternating-current generator, the N ends of the M switch power supplies are connected with the N end of the alternating-current generator, the M switch power supplies are sequentially arrayed, and the positive end of each switch power supply is led out as a positive-end tap of direct-current high-voltage output. For each switch power supply in the M-1 switch power supplies, the negative end of the previous switch power supply is connected with the positive end of the next adjacent switch power supply, and the negative end of the last switch power supply is used as a public ground end of the direct-current high-voltage output. The direct-current high-voltage power supply has the advantages of light weight, high conversion efficiency of electric energy, stable power supply current, low cost, strong applicability, environmental protection, and the like.

Description

technical field [0001] The invention belongs to the field of power electronics technology and electrical prospecting power supply equipment, and relates to a DC high voltage power supply for electrical prospecting and a DC high voltage acquisition method. Background technique [0002] As a traditional and effective geophysical prospecting method, electrical prospecting is widely used in mineral resource exploration and geological disaster assessment and forecasting. The common feature of electrical prospecting methods based on artificial fields (as opposed to natural fields: such as electric potential method) is to establish artificial electric fields by supplying electricity to the ground to study the electrical characteristics of geological bodies. In order to enable electrical prospecting instruments to observe stable and reliable signals that can reflect geological information, a DC power supply with sufficient voltage and power is required to supply power underground th...

AI Technical Summary

Problems solved by technology

In the case of high current power supply of the first type of power supply, the battery energy consumption is very fast, resulting in a rapid and unstable current drop in the later stage of power supply, and if high current power supply is required, battery boxes need to be connected in parallel, resulting in an increase in the number of battery boxes required, resulting in bulky equipment ; A large amount of waste dry batteries will be produced, if not handled properly, it will cause serious environmental pollution; a large number of dry batteries will increase the cost of exploration

The second type of power supply is generally cumbersome and needs to be charged for a long time (usually more than 5 hours) before use, especially in areas without electricity.

The main disadvantage of the third type of power supply is that the equipment is bulky and is only suitable for use in areas with convenient transportation; another disadvantage is that the conversion efficiency of the stabilized power supply is low

The fourth type of power supply equipment is complex and bulky, and is rarely used in actual exploration work

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