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Energy storage management method and system for oil pumping machine, and electronic equipment

A management method and technology for a management system, which are applied in the fields of systems and electronic equipment, and energy storage management methods for oil pumping units, can solve problems such as grid pollution, low power factor, and impact on electrical equipment, and achieve improved equipment power factor. Low power loss and improved safety performance

Active Publication Date: 2020-08-28
青岛能蜂电气有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For example, the harmonics of the input current of the uncontrolled rectifier have caused serious pollution to the power grid, especially when a large number of frequency converters are connected to the power grid, it will have a serious impact on the electrical equipment in the power system
Specifically include the following problems: 1) The power factor is low; 2) The braking energy of the motor cannot be fed back to the grid, and can only be consumed through the braking resistor; 3) The DC voltage is uncontrollable
In theory, the four-quadrant inverter can overcome the above shortcomings through a fully-controlled PWM rectifier, but there are also problems with energy measurement

Method used

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  • Energy storage management method and system for oil pumping machine, and electronic equipment
  • Energy storage management method and system for oil pumping machine, and electronic equipment
  • Energy storage management method and system for oil pumping machine, and electronic equipment

Examples

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Embodiment 1

[0029] The following will refer to Figure 1 to Figure 5 An embodiment of a method of energy storage management for a pumping unit is described.

[0030] figure 1 It is a schematic flowchart of an example of the energy storage management method for pumping units of the present invention.

[0031] Such as figure 1 Shown, a kind of energy storage management method for pumping unit, described method comprises:

[0032] Step S101, acquiring battery status information of an energy storage device.

[0033] Step S102 , charging or discharging the energy storage device according to the determined battery state information.

[0034] In step S103, real-time monitoring is performed on the motor used for the pumping unit, and information related to motor operation and demand information is returned to the main controller.

[0035] Step S104, based on the returned motor operation information and demand information, the main controller controls the operation of the motor, and obtains t...

Embodiment 2

[0071] refer to Figure 6 , the energy storage management system for pumping units of the present invention will be described, and the energy storage management system performs energy storage management through the energy storage management method described in Embodiment 1.

[0072] Such as Figure 6 As shown, an energy storage management system 600 based on a pumping unit, the energy storage management system 600 includes: an energy storage device 601, including a nickel-metal hydride battery pack and / or a lithium-ion battery pack, and each battery pack is equipped with a battery An energy management device, the battery energy management device is used to collect battery status information; a power motor 602, which is used for a pumping unit; a motor controller 603, which is electrically connected to the power motor 602; a controllable ACDC module 604, which It is electrically connected with the energy storage device 601 and the motor controller 603 , and is used for inputti...

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Abstract

The invention provides an energy storage management method and system for an oil pumping machine, and electronic equipment. The method comprises the steps: acquiring battery state information of an energy storage device; charging or discharging the energy storage device according to the determined battery state information; monitoring a motor for an oil pumping machine in real time, and returningthe motor operation related information and demand information to a main controller; based on the returned motor operation information and demand information, controlling the operation of the motor bythe main controller, and acquiring energy fed back by the motor during braking; and determining the supply power of a controllable ACDC module according to the power information of the motor controller so as to control the electric quantity balance of the energy storage device. According to the energy storage management method, energy fed back when the motor is braked can be reused, so that a good energy-saving effect is achieved, and the power factor of equipment is also improved.

Description

technical field [0001] The invention relates to the field of electrochemical energy storage, in particular to an energy storage management method, system and electronic equipment for pumping units. Background technique [0002] In recent years, permanent magnet synchronous motors have been widely used in pumping units. Analysis and research have proved that permanent magnet synchronous motors have the advantages of large starting torque, high efficiency and high power factor when used in pumping units. However, due to the special working conditions of the pumping unit, most of the permanent magnet synchronous motors currently used in the pumping unit are asynchronous start permanent magnet synchronous motors. This type of motor has many advantages such as easy starting and simple control, but there are also special working conditions Disadvantages of energy waste. [0003] The pumping unit is the key equipment for oil exploitation. The pumping unit driven by the asynchronou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32
CPCH02J3/32
Inventor 陈三成
Owner 青岛能蜂电气有限公司
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