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Wind power generating and network electricity complementary power supply for pumping unit

A technology of complementary grid power and power supply, applied in the field of power supply, can solve problems such as affecting oilfield production, increasing power consumption costs, high oil production costs, etc., to solve power failures and direct start difficulties, and prevent theft of electric energy.

Inactive Publication Date: 2007-05-23
青岛创统科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the power supply is supplied by mains electricity, the consumption of electricity is large, and the cost of oil extraction is bound to be high; moreover, once the power grid is cut off, the production of the oil field is bound to be affected; in addition, with the rise of coal prices, the cost of electricity consumption will further increase

Method used

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  • Wind power generating and network electricity complementary power supply for pumping unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1. A complementary power supply for wind power and grid power for pumping units, as shown in Figure 1. It is connected to wind turbine 1 and AC grid 2 in parallel. There are 6 three-phase switches 3 connected to the grid 2 in parallel. The output of each three-phase switch 3 is connected to a three-phase rectifier 4, and the DC output end of each three-phase rectifier 4 is connected to an inverter 5. The three-phase AC output terminal of each inverter 5 is connected to a load 7 via a three-phase switch 6. The DC output end of each three-phase rectifier 4 mentioned above is connected to the positive end of the DC output bus. The other two three-phase switches 8 are connected to the output end of the wind generator 1, and the output of the three-phase switch 8 is connected to a three-phase rectifier 9 respectively. The DC output end of each three-phase rectifier 9 is connected in series with a diode 10 and then connected to the positive end of the DC output bus. The m...

Embodiment 2

[0021] Example 2. A complementary power supply for wind power and grid power for pumping units. In this embodiment, only one three-phase switch 3 is connected to the power grid 2 in parallel. The output of the three-phase switch 3 is connected to a three-phase rectifier 4, and the DC output end of the three-phase rectifier 4 is connected to an inverter 5. The three-phase AC output end of the inverter 5 is connected to a pumping unit 7 via a three-phase switch 6. The DC output end of the above-mentioned three-phase rectifier 4 is connected to the positive end of the DC output bus. Only one three-phase switch 8 is connected to the output end of the wind generator 1, and the output of the three-phase switch 8 is connected to a three-phase rectifier 9. The DC output terminal of the three-phase rectifier 9 is connected in series with a diode 10 and then connected to the positive terminal of the DC output bus. The rest is the same as in Example 1.

[0022] Embodiment 1 and Embodiment 2 ...

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Abstract

Wind electric power generation in use for oil pumping unit through threephase switch in one route or multiple routes is connected to electric network in parallel. Output of each three-phase switch is connected to AC / DC inverter. DC output of each inverter is connected to a DC / AC inverter, which through three-phase switch is connected to load. Three-phase switch in another route or multiple routes is connected to output of wind electric power generator. Output of the switch is connected to three-phase rectifier. DC output of the rectifier through diode is connected to output end of each route of AC / DC inverter. A charger is connected to electric network; the charger through DC switch is connected to accumulator storage battery. The electric power through RS485 interface is possible to connect to remote monitor. Wind power and network power can be complemented. Advantages are energy saving, uninterrupted providing power.

Description

Technical field [0001] The invention belongs to the field of power supply technology, and more specifically relates to the design of wind power generation and grid complementary power supply for pumping units. Background technique [0002] The pumping units in the oil fields are currently powered by the electrical energy of the AC grid. Due to the characteristics of the oil field, hundreds or more pumping units are widely distributed in the vast fields, with long transmission lines, extremely scattered distribution of electrical equipment, and huge power consumption. Due to the long transmission lines and scattered power equipment, the electricity supply costs, management fees and environmental protection costs are high; and it is very easy to be misappropriated by criminals. Because the electricity is supplied by the city, the consumption of electricity is high, and the cost of oil extraction is bound to be high; moreover, once the power grid is cut off, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
CPCY02E10/763Y02E10/76
Inventor 隋学礼刘同利
Owner 青岛创统科技发展有限公司