Voltage transformer economic capacity selection method based on comprehensive consideration for economic operation and investment recovery

Abstract

The invention discloses a voltage transformer economic capacity selection method based on economic operation and investment recovery. The method mainly comprises the following steps: 1, in a step of economic capacity method-based selection, optimal load rates [beta]opt and economic capacity Se based on consideration for voltage transformer economic operation and investment recovery are calculated;2, in a step of voltage transformer economic operation interval testing, an economic operation interval of a voltage transformer is analyzed, and an economic operation interval test is conducted on the initially selected voltage transformer under an actual operating load; 3 in a step of voltage transformer economic evaluation, a TOC total owning cost method is adopted to obtain all total owning cost values, economic evaluation of the voltage transformer is performed, and whether an economic evaluation result is good is tested. Via the method disclosed in the invention, actual parameters of the voltage transformer are accurately used to ensure the true validity of subsequent calculation and determination; based on the economic evaluation of the TOC total owning cost during a whole life cycle of the voltage transformer, a problem that difference in conclusions is caused due to neglect of part of the cost or short periods in the economic evaluation can be prevented.

Description

technical field [0001] The invention relates to the field of type selection and design of distribution transformers, in particular to a type selection method for economical capacity of transformers which comprehensively considers economic operation and investment recovery. Background technique [0002] In power plants, the selection of high-voltage power plant transformers is related to the reliability of power plant operation and is an important part of the entire power plant design. The capacity of the transformer used in the plant should meet the capacity requirements of operation, maintenance and special operation modes, and on the basis of meeting the development plan of the whole plant, consider that the capacity of the transformer can be more suitable for the actual operating conditions, reduce operating losses, and reduce one-time Investment expenditure, and make the transformer meet its economic operation status. [0003] After four revisions of technical standards...

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Problems solved by technology

[0005] The present invention aims to provide a transformer economic capacity selection method that comprehensively considers economic operation and investment recovery, and solves the problems of transformer operation loss analysis, economic operation state judgment and transformer investment recovery that are ignored in existing traditional methods

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