Cable type selection method and system for low-voltage large-current direct-current load power supply
A cable selection, DC cable technology, applied in data processing applications, electrical digital data processing, special data processing applications, etc., can solve the problems of single boundary conditions, low reliability, and lack of cost calculation methods for superconducting DC cables.
Pending Publication Date: 2021-11-26
GUANGDONG POWER GRID CO LTD +1
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[0003] However, most of these research works did not consider the power supply scheme of superconducting DC cables, and the analysis of the cost composition of superconducting DC cables in the research work that considered the grid-connected scheme of superconducting DC cables was often relatively simple. The cost calculation method for the application of DC cables to low-voltage and high-current DC loads is still relatively lacking, and the final boundary conditions are often relatively simple and have low reliability
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[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0055] It should be understood that the step numbers used herein are only for convenience of description, and are not intended to limit the execution order of the steps.
[0056] It should be understood that the terminology used in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an"...
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The invention provides a cable type selection method and system for low-voltage large-current direct-current load power supply, and the method comprises the steps: obtaining the unit price of a superconducting direct-current cable and the load rate of a rolling mill, building a critical capacity model according to the unit price of the superconducting direct-current cable and the load rate of the rolling mill, and obtaining the critical capacity; obtaining the total power supply capacity of the rolling mill, establishing a first cable type selection model according to the total power supply capacity of the rolling mill and the critical capacity, and obtaining a first cable type selection result. According to the calculation method for applying the superconducting direct-current cable to the low-voltage large-current direct-current load, the boundary condition and the corresponding critical capacity of the superconducting direct-current cable applied to power supply of the low-voltage large-current direct-current load are obtained through comparison with a conventional power transmission mode, and a selection method is provided for applying the superconducting direct-current cable to direct-current large user power supply.
Description
technical field [0001] The invention relates to the technical field of cable type selection, in particular to a cable type selection method and system for low-voltage high-current DC load power supply. Background technique [0002] At present, the selection method of the low-voltage and high-current DC load power supply scheme has a certain research foundation, and the concept of life cycle cost is mostly used to analyze the investment and operation and maintenance costs of conventional DC transmission methods, and convert them into life cycle costs for comparison, and finally get The critical conditions (such as critical length, critical capacity, etc.) applicable to each scheme are given. [0003] However, most of these research works did not consider the power supply scheme of superconducting DC cables, and the analysis of the cost composition of superconducting DC cables in the research work that considered the grid-connected scheme of superconducting DC cables was often...
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IPC IPC(8): G06F30/20G06Q50/06G06F113/16
CPCG06F30/20G06Q50/06G06F2113/16
Inventor 汪政吴吉范亚洲黄振何衍和邰彬顾洁金之俭何昌皓秦睿
Owner GUANGDONG POWER GRID CO LTD