Photoelectric complementary system of oilfield pumping unit

Abstract

The invention discloses a photoelectric complementary system of an oilfield pumping unit. The system comprises a photovoltaic power generation device, a photoelectric complementary control device, a power grid power supply, a motor device and a pumping unit. According to the photoelectric complementary system of the oilfield pumping unit provided by the invention, the power supply generated by the photovoltaic power generation device is sufficiently utilized; furthermore, the power supply is reasonably distributed; the rotation speed of a motor is accurate and convenient to adjust; the energy-saving effect is realized while the reliable operation of the pumping unit is ensured; and thus, the photoelectric complementary system has good practical application value.

Description

technical field [0001] The invention relates to the field of energy technology, in particular to a photoelectric complementary system for an oil field pumping unit. Background technique [0002] The primary energy reserves in nature are limited, and the energy crisis is imminent. At the same time, the mining, transportation and use of fossil energy will cause serious pollution to the air and the living environment of human beings. At the same time, the temperature on the earth's surface will increase year by year. If it is not controlled, the greenhouse effect will melt the icebergs in the South and North poles. This could raise sea levels by several meters, putting a quarter of human living space at risk. [0003] Based on the above environmental problems, solar energy, as a new type of green renewable energy, has the largest utilization compared with other new energy sources, and is the most ideal renewable energy source. The main features are: huge reserves, no need for...

AI Technical Summary

Problems solved by technology

[0005] The prior art has proposed the technology of jointly supplying power to the pumping unit through photovoltaic power generation and the power grid, but the following problems exist in the prior art: (1) there is no more consideration of the need to obtain electrical energy from the photovoltaic power generation device as much as possible, That is, it does not consider utilizing energy-saving and environment-friendly solar power sources as much as possible; (2) the motor speed regulation of the pumping unit is not convenient and accurate enough, and the starting current is large, and the speed range of the motor of the pumping unit is too narrow, and it is slower than the actual operation process of the pumping unit. The power required to match is much larger, so that the average load rate of the motor is reduced, and the power factor is only 0.2-0.4, or even lower, resulting in a large amount of loss; (3) The motor cannot be adjusted accordingly according to the power generation of the photovoltaic power generation device speed of

[0006] In short, the existing system that uses photovoltaic power generation and power grids to supply power to pumping units is not accurate enough in power distribution, and does not make full use of solar power.

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