An independent power supply device based on pipeline transmission fluid medium pressure driver

Abstract

The invention discloses an independent power supply device based on a pipe-transported flow medium pressure driver, which uses the flow pressure energy of the high-pressure pipe-transported flow medium to drive a generator to work at a constant output power, and the rear stage is connected to a rectification module and an inverter module. An energy storage module and an energy balance resistor group module. After the power supply device is started, the energy storage module can be used to ensure the power balance of the system when the energy of the energy storage module is insufficient; when the energy of the energy storage module is full, the power supply device needs to use the switching of the energy balance resistor group to maintain the input and output power of the system matching to ensure the stable operation of the off-grid system.

Description

technical field [0001] The invention belongs to the technical field of converters, and more specifically relates to an independent power supply device based on a pressure driver of a pipeline transporting fluid medium. Background technique [0002] At present, the transportation of pipeline natural gas in my country mainly adopts high-pressure pipeline transportation. In the process of transportation, it is necessary to apply high pressure to natural gas, which contains huge pressure energy, and this part of energy is lost after being regulated by the pressure regulating station. Invention patent application number: 201210459706.5 and utility model patent application number 201220602987.0. The pressure driver uses the flow pressure energy of the controlled medium (natural gas, compressed gas, water or other non-corrosive fluids) in the pressure pipeline as power to drive the generator to rotate to generate alternating current. At this time, the alternating current output b...

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Problems solved by technology

The energy management control strategy proposed in the paper (Liao Zhiling, Ruan Xinbo. Independent photovoltaic power generation system energy management control strategy [J]. Chinese Journal of Electrical Engineering. 2009(21): 46-51.) maintains the stability of the DC bus voltage, through The supplement and absorption of the energy storage unit of the battery can make up the difference between the output power of the solar photovoltaic cell and the power consumed by the actual load, but the number of charge and discharge cycles of the battery increases, which reduces the service life of the battery

Since the output power of solar photovoltaic cells is unstable with changes in light, while the output power of pressure-driven power generation is constant, this energy management control strategy cannot be applied to this power supply device

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