Ferromagnetic frequency tripling transformer and frequency division power transmission system

Abstract

The invention discloses a ferromagnetic type frequency tripling transformer and a frequency division power transmission system, and aims to convert electric power of 1 / 3 power frequency into electric power of a power frequency. The ferromagnetic type frequency tripling transformer is composed of three single-phase transformers; each single-phase transformer comprises an iron core structure, a primary winding and a secondary winding, the primary winding adopts star-shaped or triangular wiring, and the secondary winding adopts open triangular wiring, so that the single-phase output frequency tripling transformer is formed. According to the ferromagnetic frequency tripling transformer and the frequency division power transmission system of the invention, electric power of a certain frequency can be converted into triple-frequency electric power, and the triple-frequency electric power can be output, frequency-division power transmission is completed; and the transformer can also be used as a power supply for medium-frequency induction heating.

Description

technical field [0001] The invention belongs to the field of electrotechnical technology, and relates to a power equipment and power system power generation, power transmission and power supply system, in particular to a ferromagnetic triple frequency transformer and a frequency division power transmission system. Background technique [0002] At present, the most widely used method for power generation, transmission, and power supply in power systems is AC transmission and distribution technology. The transmission frequency is mostly 50Hz or 60Hz. The main factor limiting its transmission capacity is the reactance X of the transmission system. The limit power of its transmission system can be approximately expressed by the following formula: [0003] [0004] In the formula, U represents the rated voltage of the transmission system. In order to increase the transmission capacity, the method of increasing the voltage U has always been adopted, and it has reached 1000kV a...

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Problems solved by technology

[0009] With the vigorous development of large-scale wind power and photovoltaic power generation, the distribution characteristics of power sources and loads in geographical space determine that a large amount of new land-based energy cannot be consumed locally, so it faces the practical problem of long-distance and efficient delivery; while coastal large-scale offshore When wind power, especially large-capacity offshore wind power in deep and deep seas is sent out softly and directly, the initial investment and operation and maintenance costs of offshore converter stations remain high, which seriously affects the economy of the sending method. An efficient and economical deep sea wind power transmission is urgently needed Way

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