Low voltage six division environment-protection photovoltaic power generation prefabricated substation

Abstract

The invention provides a low voltage six division environment-protection photovoltaic power generation prefabricated substation, and belongs to the technical field of electrical and electric equipment. The substation comprises a six division transformer, a low voltage chamber I, a collecting pipe, a heat dissipation device, a low voltage chamber II and a voltage chamber. A division relationship in the axial direction and width direction exists between the lower voltage winding I, low voltage winding II, low voltage winding III, high voltage winding I, high voltage winding II, high voltage winding III, low voltage winding IV, low voltage winding V and low voltage winding VI of the six division transformer. The quantity of the low voltage windings is increased to six divisions from the traditional structure of double divisions to increase the capacity of the transformer. The quantity of photovoltaic power plant prefabricated substations can be effectively reduced by two thirds. The infrastructure cost and the later period maintenance cost can be saved by two thirds. High burning point vegetable oil is selected to be the transformer insulation oil. The low voltage six division environment-protection photovoltaic power generation prefabricated substation can effectively solve the environmental protection risks of mineral transformer oil. The protection device for the high voltage chamber is a vacuum circuit breaker. The operation cost, maintenance cost and electricity loss of the photovoltaic power plant are reduced.

Description

technical field [0001] The invention belongs to the technical field of electrical and electrical equipment, and in particular relates to a low-voltage six-split environment-friendly photovoltaic power generation prefabricated substation. Background technique [0002] Photovoltaic power generation is a power generation method with few restrictions on the use of areas and relatively simple and easy equipment. It has developed rapidly in my country in recent years. In photovoltaic power generation systems, in order to save capital investment, prefabricated substations are usually used. The transformers used in substations are mainly low-voltage double-split transformers. Low-voltage double-split transformers usually consist of a parallel high-voltage winding and two axial or amplitude composed of split low-voltage windings, [0003] Today’s domestic photovoltaic farms usually use two sets of 500kWp inverters and a 1100kVA transformer for use. The secondary side voltage of the ...

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a low-voltage six-split environmentally friendly photovoltaic power generation prefabricated substation, which is used to solve the problem of small transformer capacity, high infrastructure and later maintenance costs, insufficient overload capacity and problems of traditional low-voltage split oil-immersed transformers. Disadvantages of mineral transformer oil, such as environmental risks

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