CN114156862A - Optical storage direct current micro-grid technology of oil pumping unit - Google Patents

Optical storage direct current micro-grid technology of oil pumping unit Download PDF

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Publication number
CN114156862A
CN114156862A CN202111475406.1A CN202111475406A CN114156862A CN 114156862 A CN114156862 A CN 114156862A CN 202111475406 A CN202111475406 A CN 202111475406A CN 114156862 A CN114156862 A CN 114156862A
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CN
China
Prior art keywords
pumping unit
super capacitor
energy
voltage
controller
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Pending
Application number
CN202111475406.1A
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Chinese (zh)
Inventor
李端斌
马西庚
张永平
王永超
张冲
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Shandong Aite Mechanical & Electrical Technology Co ltd
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Shandong Aite Mechanical & Electrical Technology Co ltd
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Priority to CN202111475406.1A priority Critical patent/CN114156862A/en
Publication of CN114156862A publication Critical patent/CN114156862A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10Parallel operation of dc sources
    • H02J1/102Parallel operation of dc sources being switching converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10Parallel operation of dc sources
    • H02J1/109Scheduling or re-scheduling the operation of the DC sources in a particular order, e.g. connecting or disconnecting the sources in sequential, alternating or in subsets, to meet a given demand
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention relates to the field of energy conservation and consumption reduction of a pumping unit, and provides a light storage direct current micro-grid technology of the pumping unit, wherein an alternating current grid is connected with a direct current bus, and the direct current bus is connected with the pumping unit; the super capacitor is connected with the direct-current bus, the energy redundancy automatic identification system collects the voltage and the current of the direct-current bus, the energy redundancy automatic identification system calculates the energy provided for the super capacitor, the DC/DC controller A controls the Boost circuit A, and the DC/DC controller A carries out rapid charging and discharging on the super capacitor; the battery panel is connected with the direct current bus, and the DC/DC controller B acquires the voltage and the current of the battery panel; the invention realizes green and efficient utilization of the redundant energy of the oil pumping unit, improves the working efficiency of the oil pumping unit and reduces the production cost; the frequency of balancing the oil pumping unit is reduced, and the labor intensity is reduced; energy conservation and emission reduction.

Description

Optical storage direct current micro-grid technology of oil pumping unit
Technical Field
The invention relates to the field of energy conservation and consumption reduction of pumping units, in particular to a light storage direct current micro-grid technology of a pumping unit.
Background
The redundant energy recycling during the operation of the oil pumping unit is beneficial to energy conservation and emission reduction. The existing oil pumping unit energy redundancy utilization technology is mainly divided into direct feedback power grid; consumption of a brake resistor of the frequency converter is utilized; the time-sharing control technology is adopted, and other variable frequency terminals of the direct current bus are used for consuming redundant energy; and the redundant energy is converted by the inverter and then returned to the power grid. However, the above solutions have low power factor, respectively; the working efficiency is low; the application range is narrow; the defects of injecting higher harmonic waves into the power grid and increasing line loss are overcome. The photovoltaic system of the existing oil pumping unit is in alternating current grid connection, effective combination with a direct current system of the oil pumping unit is not realized, photovoltaic power generation energy needs to pass through an alternating current-direct current-alternating current link, control is complex, energy efficiency is low, and meanwhile when the oil pumping unit is in an energy feedback state, the photovoltaic power generation energy needs to be fed back to a power grid, so that the photovoltaic power generation energy cannot be utilized by the oil pumping unit in real time, and meanwhile, the problem of injecting higher harmonics into the power grid also exists.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a light storage direct current micro-grid technology of an oil pumping unit.
The new technical scheme of the invention is as follows: a beam-pumping unit light stores up the direct current microgrid technology, including super capacitor, Boost circuit A, redundant can automatic identification system, DC/DC controller A, panel, Boost circuit B and DC/DC controller B, the alternating current electric wire netting is connected with direct current bus through the three-phase rectifier unit, the said direct current bus is connected with beam-pumping unit through the inverter; the super capacitor is connected with the direct-current bus through a Boost circuit A, the energy redundancy automatic identification system collects the voltage and the current of the direct-current bus and calculates the energy provided for the super capacitor, the DC/DC controller A controls the Boost circuit A through the energy redundancy automatic identification system and the voltage at the two ends of the super capacitor, and the DC/DC controller A carries out rapid charging and discharging on the super capacitor; the battery panel is connected with the direct current bus through a Boost circuit B, the DC/DC controller B collects the voltage and the current of the battery panel, and the DC/DC controller B controls the Boost circuit B by adopting a disturbance observation method.
When the pumping unit does work, the energy is provided for the pumping unit by the alternating current power grid, the super capacitor and the battery plate.
The energy supply time sequence when the oil pumping unit does work is as follows: firstly, the maximum power output of the cell panel is realized, and secondly, the output power of the super capacitor is adjusted by combining the voltage at two ends of the capacitor; the remaining power is provided by the ac grid.
The control process of the output power of the battery panel comprises the following steps: the DC/DC controller B acquires the voltage and the current of the battery panel, and controls the Boost circuit B by adopting a disturbance observation method to realize the maximum power output of the battery panel.
The control process of the output power of the super capacitor comprises the following steps: the DC/DC controller A collects the voltage at the two ends of the super capacitor, controls the discharge power of the super capacitor according to the difference value of the voltage at the two ends of the super capacitor and the voltage of the rated capacitor, and the discharge power is positively correlated with the voltage deviation.
When the pumping unit generates power reversely, redundant energy provided by the pumping unit and energy of the battery plate are concentrated to charge the super capacitor; the control process of the absorption power of the super capacitor comprises the following steps: the energy redundancy automatic identification system is used for acquiring the voltage and the current of the direct-current bus, the energy provided for the super capacitor is calculated by the energy redundancy automatic identification system, and the DC/DC controller A is used for controlling the Boost circuit A through the energy redundancy automatic identification system so as to realize the quick charging of the super capacitor.
The solar panel is a solar panel.
The invention has the following beneficial effects: the invention realizes green and efficient utilization of the redundant energy of the oil pumping unit, improves the working efficiency of the oil pumping unit and reduces the production cost; the frequency of balancing the oil pumping unit is reduced, and the labor intensity is reduced; energy conservation and emission reduction.
Drawings
FIG. 1 is a connection block diagram of the present invention.
Fig. 2 is a schematic diagram of system energy supply when the pumping unit does work.
Fig. 3 is a schematic diagram of system energy supply when the pumping unit generates power reversely.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
A beam-pumping unit light stores up the direct current microgrid technology, including super capacitor, Boost circuit A, redundant can automatic identification system, DC/DC controller A, panel, Boost circuit B and DC/DC controller B, the alternating current electric wire netting is connected with direct current bus through the three-phase rectifier unit, the said direct current bus is connected with beam-pumping unit through the inverter; the super capacitor is connected with the direct-current bus through a Boost circuit A, the energy redundancy automatic identification system collects the voltage and the current of the direct-current bus and calculates the energy provided for the super capacitor, the DC/DC controller A controls the Boost circuit A through the energy redundancy automatic identification system and the voltage at the two ends of the super capacitor, and the DC/DC controller A carries out rapid charging and discharging on the super capacitor; the battery panel is connected with the direct current bus through a Boost circuit B, the DC/DC controller B collects the voltage and the current of the battery panel, and the DC/DC controller B controls the Boost circuit B by adopting a disturbance observation method.
When the pumping unit does work, the energy is provided for the pumping unit by the alternating current power grid, the super capacitor and the battery plate.
The energy supply time sequence when the oil pumping unit does work is as follows: firstly, the maximum power output of the cell panel is realized, and secondly, the output power of the super capacitor is adjusted by combining the voltage at two ends of the capacitor; the remaining power is provided by the ac grid.
The control process of the output power of the battery panel comprises the following steps: the DC/DC controller B acquires the voltage and the current of the battery panel, and controls the Boost circuit B by adopting a disturbance observation method to realize the maximum power output of the battery panel.
The control process of the output power of the super capacitor comprises the following steps: the DC/DC controller A collects the voltage at the two ends of the super capacitor, controls the discharge power of the super capacitor according to the difference value of the voltage at the two ends of the super capacitor and the voltage of the rated capacitor, and the discharge power is positively correlated with the voltage deviation.
When the pumping unit generates power reversely, redundant energy provided by the pumping unit and energy of the battery plate are concentrated to charge the super capacitor; the control process of the absorption power of the super capacitor comprises the following steps: the energy redundancy automatic identification system is used for acquiring the voltage and the current of the direct-current bus, the energy provided for the super capacitor is calculated by the energy redundancy automatic identification system, and the DC/DC controller A is used for controlling the Boost circuit A through the energy redundancy automatic identification system so as to realize the quick charging of the super capacitor.
The solar panel is a solar panel.
When the pumping unit works, the alternating current power grid (energy 1), the super capacitor (energy 2) and the solar cell panel (energy 3) provide total required energy for the pumping unit; when the pumping unit does work, the energy providing time sequence is that firstly the solar cell panel realizes maximum power output, and secondly the super capacitor is combined with the voltage at two ends of the capacitor to realize the adjustment of the self output energy; the rest power is provided by an alternating current power grid; the control process of the output power of the solar cell panel comprises the following steps: the DC/DC controller B is used for controlling the Boost circuit B by adopting a disturbance observation method by collecting the voltage and the current of the photovoltaic cell panel so as to realize the maximum power output of the solar cell panel; the control process of the output power of the super capacitor comprises the following steps: the DC/DC controller A collects voltages at two ends of the super capacitor bank, controls the discharge power of the super capacitor bank according to the difference value of the voltages at the two ends compared with the rated capacitor voltage, and the discharge power is in positive correlation with the voltage deviation.
When the oil pumping unit generates power reversely, redundant energy (energy 1) provided by the oil pumping unit and energy (energy 2) of the solar cell panel are concentrated to charge the super capacitor (total energy); the control process of the output power of the solar cell panel comprises the following steps: the DC/DC controller B is used for controlling the Boost circuit B by adopting a disturbance observation method by collecting the voltage and the current of the photovoltaic cell panel so as to realize the maximum power output of the solar cell panel; the control process of the absorption power of the super capacitor bank comprises the following steps: the automatic energy redundancy system calculates the energy provided for the super capacitor by collecting the voltage and the current of the direct current bus, and the DC/DC controller A controls the Boost circuit A through energy redundancy to realize the quick charging of the super capacitor.

Claims (7)

1. The utility model provides a beam-pumping unit light stores up direct current microgrid technique, includes super capacitor, Boost circuit A, redundant ability automatic identification system, DC/DC controller A, panel, Boost circuit B and DC/DC controller B, its characterized in that: the alternating current power grid is connected with a direct current bus through a three-phase rectifying device, and the direct current bus is connected with the oil pumping unit through an inverter; the super capacitor is connected with the direct-current bus through a Boost circuit A, the energy redundancy automatic identification system collects the voltage and the current of the direct-current bus and calculates the energy provided for the super capacitor, the DC/DC controller A controls the Boost circuit A through the energy redundancy automatic identification system and the voltage at the two ends of the super capacitor, and the DC/DC controller A carries out rapid charging and discharging on the super capacitor; the battery panel is connected with the direct current bus through a Boost circuit B, the DC/DC controller B collects the voltage and the current of the battery panel, and the DC/DC controller B controls the Boost circuit B by adopting a disturbance observation method.
2. The oil pumping unit light storage direct current micro-grid technology of claim 1, characterized in that: when the pumping unit does work, the energy is provided for the pumping unit by the alternating current power grid, the super capacitor and the battery plate.
3. The oil pumping unit optical storage direct current micro-grid technology of claim 2, characterized in that: the energy supply time sequence when the oil pumping unit does work is as follows: firstly, the maximum power output of the cell panel is realized, and secondly, the output power of the super capacitor is adjusted by combining the voltage at two ends of the capacitor; the remaining power is provided by the ac grid.
4. The oil pumping unit optical storage direct current micro-grid technology of claim 3, wherein: the control process of the output power of the battery panel comprises the following steps: the DC/DC controller B acquires the voltage and the current of the battery panel, and controls the Boost circuit B by adopting a disturbance observation method to realize the maximum power output of the battery panel.
5. The oil pumping unit optical storage direct current micro-grid technology of claim 3, wherein: the control process of the output power of the super capacitor comprises the following steps: the DC/DC controller A collects the voltage at the two ends of the super capacitor, controls the discharge power of the super capacitor according to the difference value of the voltage at the two ends of the super capacitor and the voltage of the rated capacitor, and the discharge power is positively correlated with the voltage deviation.
6. The oil pumping unit light storage direct current micro-grid technology of claim 1, characterized in that: when the pumping unit generates power reversely, redundant energy provided by the pumping unit and energy of the battery plate are concentrated to charge the super capacitor; the control process of the absorption power of the super capacitor comprises the following steps: the energy redundancy automatic identification system is used for acquiring the voltage and the current of the direct-current bus, the energy provided for the super capacitor is calculated by the energy redundancy automatic identification system, and the DC/DC controller A is used for controlling the Boost circuit A through the energy redundancy automatic identification system so as to realize the quick charging of the super capacitor.
7. The oil pumping unit light storage direct current micro-grid technology of claim 1, characterized in that: the solar panel is a solar panel.
CN202111475406.1A 2021-12-06 2021-12-06 Optical storage direct current micro-grid technology of oil pumping unit Pending CN114156862A (en)

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CN202111475406.1A CN114156862A (en) 2021-12-06 2021-12-06 Optical storage direct current micro-grid technology of oil pumping unit

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Application Number Priority Date Filing Date Title
CN202111475406.1A CN114156862A (en) 2021-12-06 2021-12-06 Optical storage direct current micro-grid technology of oil pumping unit

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114665510A (en) * 2022-05-27 2022-06-24 西安海联石化科技有限公司 Photoelectric energy source direct current power supply pumping unit well group energy-saving control system
CN114665511A (en) * 2022-05-27 2022-06-24 西安海联石化科技有限公司 Electric quantity energy-saving control method for photoelectric comprehensive energy direct-current power supply system of pumping unit well group

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201298820Y (en) * 2008-08-04 2009-08-26 上海电驱动有限公司 Motor control system for pumping unit in oil field
CN201504219U (en) * 2009-09-16 2010-06-09 刘培 Energy-storage pumping unit power saving device with super capacitor
US20140077600A1 (en) * 2012-09-14 2014-03-20 Robert Douglas Cryer System and method for controlling energy storage and distribution
CN209016721U (en) * 2018-12-05 2019-06-21 陕西安控科技有限公司 A kind of Ultracapacitor Energy Storage based on conventional pumping unit
CN212137375U (en) * 2020-05-19 2020-12-11 森诺科技有限公司 Multi-energy complementary power generation device for oil well production

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201298820Y (en) * 2008-08-04 2009-08-26 上海电驱动有限公司 Motor control system for pumping unit in oil field
CN201504219U (en) * 2009-09-16 2010-06-09 刘培 Energy-storage pumping unit power saving device with super capacitor
US20140077600A1 (en) * 2012-09-14 2014-03-20 Robert Douglas Cryer System and method for controlling energy storage and distribution
CN209016721U (en) * 2018-12-05 2019-06-21 陕西安控科技有限公司 A kind of Ultracapacitor Energy Storage based on conventional pumping unit
CN212137375U (en) * 2020-05-19 2020-12-11 森诺科技有限公司 Multi-energy complementary power generation device for oil well production

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114665510A (en) * 2022-05-27 2022-06-24 西安海联石化科技有限公司 Photoelectric energy source direct current power supply pumping unit well group energy-saving control system
CN114665511A (en) * 2022-05-27 2022-06-24 西安海联石化科技有限公司 Electric quantity energy-saving control method for photoelectric comprehensive energy direct-current power supply system of pumping unit well group

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