Box-type substation with AC/DC power distribution function

Abstract

The invention relates to a box-type substation with an AC / DC power distribution function, which is characterized by comprising a high-voltage side part, a transformer part and a low-voltage side part, the transformer part comprises an AC / DC / AC type power electronic transformer; the high-voltage side of the power electronic transformer is directly connected with the high-voltage alternating-current bus through a line and is connected with the high-voltage direct-current bus through a line and the solid-state switch unit; the low-voltage side of the power electronic transformer is directly connected with the low-voltage alternating-current bus through a circuit and is connected with the low-voltage direct-current bus through a circuit and the solid-state switch unit; the voltage class of the high-voltage direct-current bus and the high-voltage alternating-current bus is 10 kV or 35 kV; the voltage class of the low-voltage DC bus and the low-voltage AC bus is 0.4 kV. The box-type transformer substation has the advantages of a traditional box-type transformer substation and meanwhile can meet the alternating current and direct current power transformation requirements.

Description

technical field [0001] The invention relates to the technical field of substations, in particular to a box-type substation with AC and DC power distribution functions. Background technique [0002] With the continuous deepening of urban and rural construction and distribution network transformation in our country, 35kV and below level substations are gradually developing towards miniaturization, land saving, energy saving and unattended. With its small footprint, compact structure, full insulation, full sealing, easy installation and many other advantages, box-type substations have gradually been generally recognized by power supply departments and users in urban and rural power supply and distribution projects. A new complete set of power transformation and distribution equipment that emerged after civil substations; box-type substations usually use conventional AC voltage transformers. With the rapid development of renewable energy power generation, micro-grids, electric v...

AI Technical Summary

Problems solved by technology

With its small footprint, compact structure, full insulation, full sealing, easy installation and many other advantages, box-type substations have gradually been generally recognized by power supply departments and users as power grid terminal equipment in urban and rural power supply and distribution projects. A new complete set of power transformation and distribution equipment that emerged after civil substations; box-type substations usually use conventional AC voltage transformers. With the rapid development of renewable energy power generation, micro-grids, electric vehicles, and energy storage technologies, the power and The load presents a trend of diversification, and it is difficult for a simple AC box-type substation to adapt to new development needs

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