Oil field oil pumping unit distributed grid connected type wind power generation complementary power supply system

Abstract

The invention provides an oil field oil pumping unit distributed grid connected type wind power generation complementary power supply system so as to reduce the power supply volume of the power grid and reduce the transmission loss of the power grid. The system comprises a wind power generating set (1), a conversion device (2), an electric energy metering device (3), a step-up transformer (4), a wind power generation control and protection system (5), a step-down transformer (6) and an oil pumping unit (7), and realizes synchronous power supply from the power grid and wind power to the load of the oil pumping unit. If the wind power is sufficient, the wind power not only can meet the load need, but also can feed electric energy back to the power grid; and in the case of lack of wind power, the power grid supplements the deficient electric energy so as to maximize utilization of wind energy and ensure that the oil pumping unit is always in a stable working state. In addition, the electric energy metering device (3) is arranged on the wind power generation side, and is used for performing accumulated metering on the wind power generation capacity so as to evaluate the energy saving effect of the wind power generation system. The entire system mainly utilizes wind energy, is convenient to use, and has a good energy saving effect.

Description

technical field [0001] The invention relates to a distributed grid-connected wind power generation and power grid complementary power supply system for pumping units in an oil field, in particular to a wind power generation device combined with the power grid to provide power for the pumping units, thereby reducing the power supply of the power grid and reducing the power transmission of the power grid. Loss of green environmental protection and energy saving system. It belongs to the field of new energy power generation and industrial energy saving. technical background [0002] In the power consumption of oilfield production and operation, the power consumption of pumping unit motors accounts for a large proportion. Over the years, oilfield enterprises, manufacturers and technicians in related fields have done a lot of work. How to reduce the power consumption per unit of oil production has become an important issue for many years. Research hotspots, and proposed many eff...

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Problems solved by technology

At present, wind power technology has been applied experimentally in oil fields, but due to the different methods used, there are many problems such as the need for battery buffering, difficulty in matching with the pulsating load of pumping units, and the use of multiple inverters resulting in high cost and poor reliability.

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