WO2020057423A1 - Electric drilling rig/workover rig microgrid system based on flywheel energy storage technology - Google Patents

Electric drilling rig/workover rig microgrid system based on flywheel energy storage technology Download PDF

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WO2020057423A1
WO2020057423A1 PCT/CN2019/105511 CN2019105511W WO2020057423A1 WO 2020057423 A1 WO2020057423 A1 WO 2020057423A1 CN 2019105511 W CN2019105511 W CN 2019105511W WO 2020057423 A1 WO2020057423 A1 WO 2020057423A1
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magnetic bearing
energy storage
flywheel energy
rig
microgrid
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PCT/CN2019/105511
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French (fr)
Chinese (zh)
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程波
段晓飞
马继光
冯旭骅
王普平
贺运航
陈湘陵
师远征
成小强
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西安宝美电气工业有限公司
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Publication of WO2020057423A1 publication Critical patent/WO2020057423A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/30—Arrangements for balancing of the load in a network by storage of energy using dynamo-electric machines coupled to flywheels
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/02—Additional mass for increasing inertia, e.g. flywheels
    • H02K7/025—Additional mass for increasing inertia, e.g. flywheels for power storage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids

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  • the invention belongs to the technical field of petroleum electric drilling rig power system, and particularly relates to an electric drilling rig / workover rig micro-grid system based on flywheel energy storage technology.
  • the purpose of the present invention is to provide an electric drilling rig / workover rig micro-grid system based on flywheel energy storage technology, which solves the problems of high investment in fixed assets and low fuel efficiency caused by the backwardness of traditional electric drilling rig technology.
  • the technical scheme adopted by the present invention is an electric drilling rig / workover rig micro-grid system based on flywheel energy storage technology, which includes a power system.
  • the power system is sequentially connected with a first converter and a load system, and the power system and the first converter
  • the generator is connected through an AC busbar, and a second converter and a flywheel energy storage device are connected to the AC busbar in turn.
  • the electric drill / workover rig microgrid system also includes a microgrid management system connected to the flywheel energy storage device.
  • the micro-grid management system includes an operation display terminal and a micro-grid PLC connected in sequence, and the micro-grid PLC is connected to the flywheel energy storage device.
  • the flywheel energy storage device includes a cabinet.
  • the bottom of the cabinet is provided with an isolation transformer, a vacuum pump, and a vacuum container.
  • the vacuum container is located between the isolation transformer and the vacuum pump.
  • An empty container is provided with a rotating shaft.
  • the rotating shaft is sleeved from top to bottom.
  • a magnetic bearing controller, a motor interface, and a magnetic bearing are also fixed on the inner wall of the cabinet.
  • Bearing DC power supply, magnetic bearing UPS power supply and auxiliary system control switch, the top surface of the cabinet is also provided with a fan, a first radial magnetic bearing, a first axial magnetic bearing, a second axial magnetic bearing and a second radial magnetic
  • the bearings are connected to the magnetic bearing DC power supply respectively.
  • the first radial magnetic bearing, the first axial magnetic bearing, the second axial magnetic bearing and the second radial magnetic bearing are also connected to the magnetic bearing UPS power supply respectively.
  • the first radial The magnetic bearing 21, the first axial magnetic bearing 23, the second axial magnetic bearing 25 and the second radial magnetic bearing 26 are also connected to the magnetic bearing controller 14, respectively.
  • the auxiliary system controls the switch and the isolation transformer, the vacuum
  • the pump, the magnetic bearing controller, the magnetic bearing DC power supply, and the magnetic bearing UPS power supply are all connected separately, and the motor interfaces are respectively connected with the motor and the microgrid PLC.
  • the second converter is a bi-directional converter.
  • the power system includes multiple diesel generator sets.
  • the load system is any one of an electric drill, a DC drill, or a workover rig.
  • the flywheel energy storage device is configured to store energy when the power supply unit of the power system is in a light load state, and release the stored energy to the AC busbar under predetermined conditions to supply power to the load system together with the power supply unit.
  • the microgrid management system is configured to determine whether the voltage of the AC busbar or the current flowing through the AC busbar has changed abruptly, and the voltage on the AC busbar (2) suddenly drops or the current flowing through the AC busbar (2) suddenly decreases
  • the flywheel energy storage device (5) is controlled to release the stored energy at any time.
  • the AC busbar (2) is a 600VAC busbar.
  • the electric rig / workover rig micro-grid system based on the flywheel energy storage technology of the invention completes the energy conversion between the 600VAC busbar and the flywheel energy storage device through a bidirectional converter to stabilize the power grid and reduce the impact on the diesel generator set.
  • This system has a simple structure and is easy to use. It does not need to make excessive changes to the original electrical control system.
  • the intelligent microgrid management system and the flywheel energy storage device for comprehensive energy management and intelligent regulation, the electric rig microgrid can be achieved. Optimal energy-saving control mode to improve fuel efficiency and reduce additional emissions.
  • FIG. 1 is a schematic diagram of a microgrid system of an electric drilling rig / workover rig based on the flywheel energy storage technology of the present invention
  • FIG. 2 is a schematic structural diagram of a flywheel energy storage device in an electric drilling rig / workover rig microgrid system based on the flywheel energy storage technology of the present invention
  • FIG. 3 is a schematic structural diagram of a flywheel battery in a flywheel energy storage device in an electric drilling rig / workover rig microgrid system based on the flywheel energy storage technology of the present invention.
  • the electric drilling rig / workover rig micro-grid system based on the flywheel energy storage technology of the present invention includes a power system 1, which is sequentially connected with a first converter 3 and a load system 7, and the power system 1 and The first converter 3 is connected through a 600VAC busbar 2.
  • the 600VAC busbar 2 is also connected with a second converter 4 and a flywheel energy storage device 5 in sequence, and further includes a microgrid management system 6 connected to the flywheel energy storage device 5.
  • the microgrid management system 6 may include an operation display terminal and a microgrid PLC connected in sequence, and the microgrid PLC is connected to the flywheel energy storage device 5.
  • the flywheel energy storage device 5 may include a cabinet 9.
  • the internal bottom surface of the cabinet 9 may be provided with an isolation transformer 10, a vacuum pump 12, and a vacuum container 19 respectively.
  • the vacuum container 19 may be located between the isolation transformer 10 and the vacuum pump 12.
  • a rotating shaft 20 is provided inside the empty container 19, and the rotating shaft 20 can be sleeved with a first radial magnetic bearing 21, a motor 22, a first axial magnetic bearing 23, a flywheel 24, and The second axial magnetic bearing 25 and the second radial magnetic bearing 26.
  • the inner wall of the cabinet 9 is also fixedly provided with a magnetic bearing controller 14, a motor interface 15, a magnetic bearing DC power supply 16, a magnetic bearing UPS power supply 13, and an auxiliary system.
  • Control switch 17, the top surface of cabinet 9 can also be provided with a fan 18, the first radial magnetic bearing 21, the first axial magnetic bearing 23, the second axial magnetic bearing 25 and the second radial magnetic bearing 26 can all be Connected to the magnetic bearing DC power supply 16 respectively, the first radial magnetic bearing 21, the first axial magnetic bearing 23, the second axial magnetic bearing 25 and the second radial magnetic bearing 26 can also be respectively connected to the magnetic bearing UPS power supply 13 , The first radial magnetic bearing 21, the first axial magnetic bearing 23, and the second shaft The magnetic bearing 25 and the second radial magnetic bearing 26 can also be connected to the magnetic bearing controller 14, respectively, the auxiliary system control switch 17 and the isolation transformer 10, the vacuum pump 12, the magnetic bearing controller 14, the magnetic bearing DC power supply 16, and the magnetic bearing UPS.
  • the power source 13 and the fan 18 are respectively connected, and the motor interface 15 is respectively connected to the motor 22 and the micro-grid PLC; and two ends of the rotating shaft 20 may be respectively provided with protective bearings 11.
  • the second converter 5 may be a bi-directional converter.
  • the power system 1 may include a plurality of power supply units such as a diesel generator set 8.
  • the load system 7 is any one of an electric drill or a DC drill equipment.
  • the invention relates to an electric drilling rig / workover rig micro-grid system based on flywheel energy storage technology, which is suitable for SCR600VAC busbar electric drilling rig and VFD variable frequency electric drilling rig.
  • the electric energy input or output of the flywheel energy storage device 5 is connected to the diesel generator set 8 and On the 600VAC busbar 2 between the first converter 3, after the electric power output by the diesel generator set 8 passes through the first converter 3, the 600VAC busbar motor (DW, RT, MP) of the drilling equipment or 1250kvA, After 600 / 400VAC change, it will be used for AC motor (MCC) operation.
  • MCC AC motor
  • the flywheel energy storage device control circuit in the microgrid management system 6 detects that the flywheel energy storage device 5 is normal and drilling conditions. In the chargeable state, the flywheel energy storage device 5 begins to store and charge (for example, the flywheel energy storage device 5 stores part of the energy provided by the diesel generator set 8); when the flywheel energy storage device control circuit detects that the energy storage is full, it maintains this state.
  • the electric rig / workover rig microgrid system based on the flywheel energy storage technology of the present invention wherein the microgrid management system 6 mainly has the following functions: (1) real-time display and monitoring of operating parameters (power, voltage, (Current, etc.); (2) Real-time display and monitoring of SCR600VAC busbar load (mud pump, winch, turntable) and MCC AC load operating parameters (power, voltage, current, etc.); (3) According to the total of diesel generator set 8 in the network Power, the state of the flywheel energy storage device 5 and the power required on the load side.
  • operating parameters power, voltage, (Current, etc.
  • SCR600VAC busbar load mud pump, winch, turntable
  • MCC AC load operating parameters power, voltage, current, etc.
  • the electric rig / workover rig micro-grid system based on the flywheel energy storage technology of the present invention completes the energy conversion between the 600VAC busbar 2 and the flywheel energy storage device 5 through a bidirectional converter, thereby achieving stable power grid and reducing Impact on the diesel generator set 8;
  • This system has a simple structure and is easy to use. There is no need to make excessive changes to the original electronic control system.
  • the energy stored in the flywheel energy storage device 5 is fed back to the grid, which can reduce the operation of the diesel generator set 8.
  • the electric power rig / workover rig microgrid management system 6 is used to comprehensively manage and intelligently control the energy of the diesel generator set power system 1, the flywheel energy storage device 5, and the electric rig load system 7 to achieve the electric rig microgrid Optimal energy-saving control mode to improve fuel efficiency and reduce additional emissions.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

An electric drilling rig/workover rig microgrid system based on flywheel energy storage technology, comprising a power system (1), wherein the power system (1) is sequentially connected to a first converter (3) and a load system (7); the power system (1) and the first converter (3) are connected by means of an AC bus bar (2); the AC bus bar (2) is sequentially connected to a second converter (4) and a flywheel energy storage device (5). Also comprised is a micro-grid management system (6) connected to the flywheel energy storage device (5). By means of the present electric drilling rig/workover rig microgrid system based on flywheel energy storage technology, an electric drilling rig is subject to intelligent management, which allows the improvement of energy use efficiency and the smart grid system to become the development direction for power systems of electric drilling rigs, and solves the problems of high investment in fixed assets and low utilization of fuel oil caused by the technology for power grid management means of traditional electric drilling rigs falling behind.

Description

基于飞轮储能技术的电动钻机/修井机微电网系统Microgrid system of electric drilling rig / workover rig based on flywheel energy storage technology 技术领域Technical field
本发明属于石油电动钻机动力系统技术领域，具体涉及一种基于飞轮储能技术的电动钻机/修井机微电网系统。The invention belongs to the technical field of petroleum electric drilling rig power system, and particularly relates to an electric drilling rig / workover rig micro-grid system based on flywheel energy storage technology.
背景技术Background technique
在日常钻井工作中，由于钻井工况功率变化很大，为了满足脉冲式的功率需要(如:起钻工况)，不得不增加一台发电机组在网运行，以满足钻井工况的需求，在钻机运行的大部分时间内，为钻井设备提供动力的柴油发电机组经常处于“大马拉小车”的运行情况，通常只有10–30％的额定功率却产生高指数的燃料消耗、额外排放，造成低效和高成本，这种情况伴随整个钻井周期，增加的机组不仅增加购置成本，并且在空载或轻载时，造成大量燃油浪费；钻机在作业过程中经常出现负载功率突加、突减现象，对动力系统具有较大的冲击性，功率突变引发柴油发电机组燃油燃烧不充分，导致所谓“柴油机冒黑烟”现象，不仅大量浪费燃油，而且造成环境污染，同时导致发电机母线电压和机组频率发生较大波动，对电气设备造成危害；钻井作业过程中存在大量势能，目前没有进行回收利用，而是通过能耗制动变成热量释放，造成能量浪费。In the daily drilling work, due to the large variation of drilling power, in order to meet the pulsed power requirements (such as drilling conditions), an additional generator set must be run on the network to meet the requirements of drilling conditions. During most of the time of the rig operation, the diesel generator set that powers the drilling equipment is often in the "big horse drawn trolley" operating condition, usually with only 10-30% of the rated power but generating high index fuel consumption and additional emissions, Causes inefficiency and high costs. This situation accompanies the entire drilling cycle. The increased units not only increase the purchase cost, but also cause a lot of fuel waste when no-load or light-load. The rig often has sudden increase in load power during operation. The reduction phenomenon has a greater impact on the power system. The sudden change in power causes insufficient fuel combustion of the diesel generator set, which leads to the so-called "diesel smoke" phenomenon, which not only wastes a lot of fuel, but also causes environmental pollution and leads to the generator bus voltage. And unit frequency fluctuate greatly, causing harm to electrical equipment; there are a large number of Potential energy is currently not being recycled, but is turned into heat release through energy braking, causing energy waste.
为了解决传统电动钻机由于电网管理技术手段落后而造成的固定资产投入高、燃油利用率低、大气污染严重等问题成为用户迫切的需求；电动钻机实现智能管理，提高能源使用效率的智能微电网系统已经成为电动钻机动力系统的发展方向；目前存在的技术方案是将储能装置通过增加一台调峰电机实现与机械钻机的结合，达到节能效果，其无法与600VAC母排或交流电动钻机结合使用。In order to solve the problems of high electric power investment, low fuel efficiency, and severe air pollution caused by traditional electric drilling rigs due to outdated grid management techniques, it has become an urgent need for users; electric micro rigs implement intelligent management and improve energy efficiency. It has become the development direction of the power system of electric drilling rigs; the current technical solution is to combine the energy storage device with a mechanical rig by adding a peaking motor to achieve energy saving effects, which cannot be combined with 600VAC busbars or AC electric rigs .
发明内容Summary of the Invention
本发明的目的是提供一种基于飞轮储能技术的电动钻机/修井机微电网系统，解决了传统电动钻机由于电网管理手段技术落后而造成的固定资产投 入高、燃油利用率低的问题。The purpose of the present invention is to provide an electric drilling rig / workover rig micro-grid system based on flywheel energy storage technology, which solves the problems of high investment in fixed assets and low fuel efficiency caused by the backwardness of traditional electric drilling rig technology.
本发明所采用的技术方案是，基于飞轮储能技术的电动钻机/修井机微电网系统，包括动力系统，动力系统依次连接有第一变流器和负载系统，动力系统和第一变流器通过AC母排连接，AC母排上还依次连接有第二变流器和飞轮储能装置，电动钻机/修井机微电网系统还包括与飞轮储能装置连接的微电网管理系统。The technical scheme adopted by the present invention is an electric drilling rig / workover rig micro-grid system based on flywheel energy storage technology, which includes a power system. The power system is sequentially connected with a first converter and a load system, and the power system and the first converter The generator is connected through an AC busbar, and a second converter and a flywheel energy storage device are connected to the AC busbar in turn. The electric drill / workover rig microgrid system also includes a microgrid management system connected to the flywheel energy storage device.
本发明的特点还在于：The invention is also characterized by:
微电网管理系统包括依次连接的操作显示终端、微电网PLC，微电网PLC与所述飞轮储能装置连接。The micro-grid management system includes an operation display terminal and a micro-grid PLC connected in sequence, and the micro-grid PLC is connected to the flywheel energy storage device.
飞轮储能装置包括柜体，柜体内部底面分别设置有隔离变压器、真空泵和真空容器，真空容器位于隔离变压器和真空泵的中间，空容器内部设置有转轴，转轴从上至下依次套接设置有第一径向磁轴承、电机、第一轴向磁轴承、飞轮、第二轴向磁轴承和第二径向磁轴承，柜体内侧壁还分别固定设置有磁轴承控制器、电机接口、磁轴承直流电源、磁轴承UPS电源和辅助系统控制开关，柜体内部顶面还设置有风扇，第一径向磁轴承、第一轴向磁轴承、第二轴向磁轴承和第二径向磁轴承均分别与磁轴承直流电源连接，第一径向磁轴承、第一轴向磁轴承、第二轴向磁轴承和第二径向磁轴承还分别与磁轴承UPS电源连接，第一径向磁轴承21、第一轴向磁轴承23、第二轴向磁轴承25和第二径向磁轴承26还分别与磁轴承控制器14连接，辅助系统控制开关与隔离变压器、真空泵、磁轴承控制器、磁轴承直流电源、磁轴承UPS电源均分别连接，电机接口分别与电机和微电网PLC连接。The flywheel energy storage device includes a cabinet. The bottom of the cabinet is provided with an isolation transformer, a vacuum pump, and a vacuum container. The vacuum container is located between the isolation transformer and the vacuum pump. An empty container is provided with a rotating shaft. The rotating shaft is sleeved from top to bottom. The first radial magnetic bearing, the motor, the first axial magnetic bearing, the flywheel, the second axial magnetic bearing, and the second radial magnetic bearing. A magnetic bearing controller, a motor interface, and a magnetic bearing are also fixed on the inner wall of the cabinet. Bearing DC power supply, magnetic bearing UPS power supply and auxiliary system control switch, the top surface of the cabinet is also provided with a fan, a first radial magnetic bearing, a first axial magnetic bearing, a second axial magnetic bearing and a second radial magnetic The bearings are connected to the magnetic bearing DC power supply respectively. The first radial magnetic bearing, the first axial magnetic bearing, the second axial magnetic bearing and the second radial magnetic bearing are also connected to the magnetic bearing UPS power supply respectively. The first radial The magnetic bearing 21, the first axial magnetic bearing 23, the second axial magnetic bearing 25 and the second radial magnetic bearing 26 are also connected to the magnetic bearing controller 14, respectively. The auxiliary system controls the switch and the isolation transformer, the vacuum The pump, the magnetic bearing controller, the magnetic bearing DC power supply, and the magnetic bearing UPS power supply are all connected separately, and the motor interfaces are respectively connected with the motor and the microgrid PLC.
转轴的两端还分别设置有保护轴承。Protective bearings are also provided at both ends of the rotating shaft.
第二变流器为双向变流器。The second converter is a bi-directional converter.
动力系统包括多个柴油发电机组。The power system includes multiple diesel generator sets.
负载系统为电动钻机、直流钻机或修井机中的任意一种。The load system is any one of an electric drill, a DC drill, or a workover rig.
飞轮储能装置被配置为在动力系统的供电单元处于轻载状态时储能，并且在预定条件下向AC母排释放储存的能量，以与供电单元一起向负载系统供电。The flywheel energy storage device is configured to store energy when the power supply unit of the power system is in a light load state, and release the stored energy to the AC busbar under predetermined conditions to supply power to the load system together with the power supply unit.
微电网管理系统被配置为确定交流母排的电压或流过交流母排的电流是否发生突变，并且在交流母排(2)的电压突然降低或者流过交流母排(2)的电流突然降低时控制飞轮储能装置(5)释放储存的能量。The microgrid management system is configured to determine whether the voltage of the AC busbar or the current flowing through the AC busbar has changed abruptly, and the voltage on the AC busbar (2) suddenly drops or the current flowing through the AC busbar (2) suddenly decreases The flywheel energy storage device (5) is controlled to release the stored energy at any time.
AC母排(2)为600VAC母排。The AC busbar (2) is a 600VAC busbar.
本发明的有益效果是：The beneficial effects of the present invention are:
本发明基于飞轮储能技术的电动钻机/修井机微电网系统，通过双向变流器完成600VAC母排和飞轮储能装置之间的能量转换，达到稳定电网，减少对柴油发电机组冲击的作用；本系统结构简单，使用方便，不需要对原有电控系统作过多改动，将智能微电网管理系统和飞轮储能装置结合进行能源综合管理和智能调控，便可达到了电动钻机微电网节能最优控制模式，从而提高燃油利用率，减少了额外排放。The electric rig / workover rig micro-grid system based on the flywheel energy storage technology of the invention completes the energy conversion between the 600VAC busbar and the flywheel energy storage device through a bidirectional converter to stabilize the power grid and reduce the impact on the diesel generator set. This system has a simple structure and is easy to use. It does not need to make excessive changes to the original electrical control system. By combining the intelligent microgrid management system and the flywheel energy storage device for comprehensive energy management and intelligent regulation, the electric rig microgrid can be achieved. Optimal energy-saving control mode to improve fuel efficiency and reduce additional emissions.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1是本发明基于飞轮储能技术的电动钻机/修井机微电网系统原理图；1 is a schematic diagram of a microgrid system of an electric drilling rig / workover rig based on the flywheel energy storage technology of the present invention;
图2是本发明基于飞轮储能技术的电动钻机/修井机微电网系统中飞轮储能装置的结构示意图；2 is a schematic structural diagram of a flywheel energy storage device in an electric drilling rig / workover rig microgrid system based on the flywheel energy storage technology of the present invention;
图3是本发明基于飞轮储能技术的电动钻机/修井机微电网系统中飞轮储能装置中飞轮电池的结构示意图。3 is a schematic structural diagram of a flywheel battery in a flywheel energy storage device in an electric drilling rig / workover rig microgrid system based on the flywheel energy storage technology of the present invention.
图中，1.动力系统，2. 600VAC母排，3.第一变流器，4.第二变流器，5.飞轮储能装置，6.微电网管理系统，7.负载系统，8.柴油发电机组，9.柜体，10.隔离变压器，11.保护轴承，12.真空泵，13.磁轴承UPS电源，14.磁轴承控制器，15.电机接口，16.磁轴承直流电源，17.辅助系统控制开关，18.风扇，19.真空容器，20.转轴，21.第一径向磁轴承，22.电机，23.第一轴向磁轴承，24.飞轮，25.第二轴向磁轴承，26.第二径向磁轴承。In the figure, 1. Power system, 2. 600VAC busbar, 3. First converter, 4. Second converter, 5. Flywheel energy storage device, 6. Microgrid management system, 7. Load system, 8 .Diesel generator set, 9. Cabinet, 10. Isolating transformer, 11. Protective bearing, 12. Vacuum pump, 13. Magnetic bearing UPS power supply, 14. Magnetic bearing controller, 15. Motor interface, 16. Magnetic bearing DC power supply, 17. Auxiliary system control switch, 18. Fan, 19. Vacuum container, 20. Rotary shaft, 21. First radial magnetic bearing, 22. Motor, 23. First axial magnetic bearing, 24. Flywheel, 25. Second Axial magnetic bearing, 26. Second radial magnetic bearing.
具体实施方式detailed description
下面结合附图和具体实施方式对本发明进行详细说明。The present invention is described in detail below with reference to the drawings and specific embodiments.
本发明基于飞轮储能技术的电动钻机/修井机微电网系统，如图1所示，包括动力系统1，动力系统1依次连接有第一变流器3和负载系统7，动力系统1和第一变流器3通过600VAC母排2连接，600VAC母排2上还依次连接有第二变流器4和飞轮储能装置5，还包括与飞轮储能装置5连接的微电网管理系统6；微电网管理系统6可包括依次连接的操作显示终端、微电网PLC，微电网PLC与所述飞轮储能装置5连接。如图2所示，飞轮储能装置5可包括柜体9，柜体9内部底面可以分别设置有隔离变压器10、真空泵12 和真空容器19，真空容器19可以位于隔离变压器10和真空泵12的中间，如图3所示，空容器19内部设置有转轴20，转轴20可以从上至下依次套接设置有第一径向磁轴承21、电机22、第一轴向磁轴承23、飞轮24、第二轴向磁轴承25和第二径向磁轴承26，柜体9内侧壁还分别固定设置有磁轴承控制器14、电机接口15、磁轴承直流电源16、磁轴承UPS电源13和辅助系统控制开关17，柜体9内部顶面还可设置有风扇18，第一径向磁轴承21、第一轴向磁轴承23、第二轴向磁轴承25和第二径向磁轴承26均可分别与磁轴承直流电源16连接，第一径向磁轴承21、第一轴向磁轴承23、第二轴向磁轴承25和第二径向磁轴承26还可分别与磁轴承UPS电源13连接，第一径向磁轴承21、第一轴向磁轴承23、第二轴向磁轴承25和第二径向磁轴承26还可分别与磁轴承控制器14连接，辅助系统控制开关17与隔离变压器10、真空泵12、磁轴承控制器14、磁轴承直流电源16、磁轴承UPS电源13、风扇18均分别连接，电机接口15分别与电机22和微电网PLC连接；转轴20的两端还可分别设置有保护轴承11。The electric drilling rig / workover rig micro-grid system based on the flywheel energy storage technology of the present invention, as shown in FIG. 1, includes a power system 1, which is sequentially connected with a first converter 3 and a load system 7, and the power system 1 and The first converter 3 is connected through a 600VAC busbar 2. The 600VAC busbar 2 is also connected with a second converter 4 and a flywheel energy storage device 5 in sequence, and further includes a microgrid management system 6 connected to the flywheel energy storage device 5. The microgrid management system 6 may include an operation display terminal and a microgrid PLC connected in sequence, and the microgrid PLC is connected to the flywheel energy storage device 5. As shown in FIG. 2, the flywheel energy storage device 5 may include a cabinet 9. The internal bottom surface of the cabinet 9 may be provided with an isolation transformer 10, a vacuum pump 12, and a vacuum container 19 respectively. The vacuum container 19 may be located between the isolation transformer 10 and the vacuum pump 12. As shown in FIG. 3, a rotating shaft 20 is provided inside the empty container 19, and the rotating shaft 20 can be sleeved with a first radial magnetic bearing 21, a motor 22, a first axial magnetic bearing 23, a flywheel 24, and The second axial magnetic bearing 25 and the second radial magnetic bearing 26. The inner wall of the cabinet 9 is also fixedly provided with a magnetic bearing controller 14, a motor interface 15, a magnetic bearing DC power supply 16, a magnetic bearing UPS power supply 13, and an auxiliary system. Control switch 17, the top surface of cabinet 9 can also be provided with a fan 18, the first radial magnetic bearing 21, the first axial magnetic bearing 23, the second axial magnetic bearing 25 and the second radial magnetic bearing 26 can all be Connected to the magnetic bearing DC power supply 16 respectively, the first radial magnetic bearing 21, the first axial magnetic bearing 23, the second axial magnetic bearing 25 and the second radial magnetic bearing 26 can also be respectively connected to the magnetic bearing UPS power supply 13 , The first radial magnetic bearing 21, the first axial magnetic bearing 23, and the second shaft The magnetic bearing 25 and the second radial magnetic bearing 26 can also be connected to the magnetic bearing controller 14, respectively, the auxiliary system control switch 17 and the isolation transformer 10, the vacuum pump 12, the magnetic bearing controller 14, the magnetic bearing DC power supply 16, and the magnetic bearing UPS. The power source 13 and the fan 18 are respectively connected, and the motor interface 15 is respectively connected to the motor 22 and the micro-grid PLC; and two ends of the rotating shaft 20 may be respectively provided with protective bearings 11.
第二变流器5可以为双向变流器。The second converter 5 may be a bi-directional converter.
动力系统1可以包括多个柴油发电机组8等供电单元。The power system 1 may include a plurality of power supply units such as a diesel generator set 8.
负载系统7为电动钻机或直流钻机设备中的任意一种。The load system 7 is any one of an electric drill or a DC drill equipment.
本发明一种基于飞轮储能技术的电动钻机/修井机微电网系统，适用于SCR600VAC母排电动钻机和VFD变频电动钻机，飞轮储能装置5的电能输入或输出连接在柴油发电机组8与第一变流器3之间的600VAC母排2上，柴油发电机组8输出的电能经过第一变流器3后，驱动钻井设备的600VAC母排电机(DW、RT、MP)或经1250kvA、600/400VAC变化后供交流电机(MCC)运行；当柴油发电机组8处于轻载状态下，微电网管理系统6中的飞轮储能装置控制电路检测出飞轮储能装置5正常、钻井工况时处于可充电状态，飞轮储能装置5开始储存充电(例如，飞轮储能装置5储存柴油发电机组8提供的部分能量。)；当飞轮储能装置控制电路检测到能量储满时，保持此状态不变；当负载系统7的功率需求突然增大时，飞轮储能装置5控制电路检测出飞轮储能装置5正常并且钻井工况处于起钻工况(例如，满足600VAC母排2电压突然降低、电流突然增大等条件)时，飞轮储能装置控制电路向飞轮储能装置5发出放电指令，飞轮储能装置5开始释能，将储存能量输出到600VAC母排2上，与柴油发电机组8共同供电，以应对负载系统7功率的 变化。The invention relates to an electric drilling rig / workover rig micro-grid system based on flywheel energy storage technology, which is suitable for SCR600VAC busbar electric drilling rig and VFD variable frequency electric drilling rig. The electric energy input or output of the flywheel energy storage device 5 is connected to the diesel generator set 8 and On the 600VAC busbar 2 between the first converter 3, after the electric power output by the diesel generator set 8 passes through the first converter 3, the 600VAC busbar motor (DW, RT, MP) of the drilling equipment or 1250kvA, After 600 / 400VAC change, it will be used for AC motor (MCC) operation. When the diesel generator set 8 is under light load, the flywheel energy storage device control circuit in the microgrid management system 6 detects that the flywheel energy storage device 5 is normal and drilling conditions. In the chargeable state, the flywheel energy storage device 5 begins to store and charge (for example, the flywheel energy storage device 5 stores part of the energy provided by the diesel generator set 8); when the flywheel energy storage device control circuit detects that the energy storage is full, it maintains this state. Unchanged; when the power demand of the load system 7 suddenly increases, the control circuit of the flywheel energy storage device 5 detects that the flywheel energy storage device 5 is normal and the drilling condition is in the drilling condition (for example, to meet the 600VAC power requirement) When the voltage of row 2 suddenly decreases, the current suddenly increases, etc.), the control circuit of the flywheel energy storage device issues a discharge instruction to the flywheel energy storage device 5, the flywheel energy storage device 5 starts to release energy, and outputs the stored energy to the 600VAC busbar 2. , Together with the diesel generator set 8 to cope with the power change of the load system 7.
本发明基于飞轮储能技术的电动钻机/修井机微电网系统，其中微电网管理系统6主要具有以下功能：(1)实时显示、监控在网柴油发电机组8的运行参数(功率、电压、电流等)；(2)实时显示、监控SCR600VAC母排负载(泥浆泵、绞车、转盘)及MCC交流负载运行参数(功率、电压、电流等)；(3)根据在网柴油发电机组8的总功率，飞轮储能装置5的状态及负载侧要求功率，对飞轮储能装置5的充放电进行动态平衡调节，减少SCR600VAC母排电动钻机和VFD变频电动钻机脉冲负载对电网的冲击，提高柴油发电机组8的燃油效率；(4)对SCR600VAC母排电动钻机和VFD变频电动钻机能量系统进行统计、记录、分析等智能化管理。The electric rig / workover rig microgrid system based on the flywheel energy storage technology of the present invention, wherein the microgrid management system 6 mainly has the following functions: (1) real-time display and monitoring of operating parameters (power, voltage, (Current, etc.); (2) Real-time display and monitoring of SCR600VAC busbar load (mud pump, winch, turntable) and MCC AC load operating parameters (power, voltage, current, etc.); (3) According to the total of diesel generator set 8 in the network Power, the state of the flywheel energy storage device 5 and the power required on the load side. Dynamically adjust the charge and discharge of the flywheel energy storage device 5 to reduce the impact of the SCR600VAC busbar electric rig and VFD variable frequency electric rig pulse load on the power grid and improve diesel power generation. Fuel efficiency of unit 8; (4) Intelligent management of statistics, recording, and analysis on the energy systems of SCR600VAC bus electric rigs and VFD variable frequency electric rigs.
通过上述方式，本发明基于飞轮储能技术的电动钻机/修井机微电网系统，通过双向变流器完成600VAC母排2和飞轮储能装置5之间的能量转换，达到稳定电网，减少了对柴油发电机组8冲击的作用；本系统结构简单，使用方便，不需要对原有电控系统作过多改动，飞轮储能装置5储存的电能回馈到电网，可以减少柴油发电机组8的运行台数；从而实现了用电动钻机/修井机微电网管理系统6将柴油发电机组动力系统1、飞轮储能装置5以及电动钻机负载系统7进行能源综合管理和智能调控，达到了电动钻机微电网节能最优控制模式，从而提高燃油利用率，减少了额外排放。In the above manner, the electric rig / workover rig micro-grid system based on the flywheel energy storage technology of the present invention completes the energy conversion between the 600VAC busbar 2 and the flywheel energy storage device 5 through a bidirectional converter, thereby achieving stable power grid and reducing Impact on the diesel generator set 8; This system has a simple structure and is easy to use. There is no need to make excessive changes to the original electronic control system. The energy stored in the flywheel energy storage device 5 is fed back to the grid, which can reduce the operation of the diesel generator set 8. The number of units; thus, the electric power rig / workover rig microgrid management system 6 is used to comprehensively manage and intelligently control the energy of the diesel generator set power system 1, the flywheel energy storage device 5, and the electric rig load system 7 to achieve the electric rig microgrid Optimal energy-saving control mode to improve fuel efficiency and reduce additional emissions.

Claims (10)

  1. 基于飞轮储能技术的电动钻机/修井机微电网系统，其特征在于，包括动力系统(1)，所述动力系统(1)依次连接有第一变流器(3)和负载系统(7)，所述动力系统(1)和所述第一变流器(3)通过AC母排(2)连接，所述AC母排(2)上还依次连接有第二变流器(4)和飞轮储能装置(5)，所述电动钻机/修井机微电网系统还包括与所述飞轮储能装置(5)连接的微电网管理系统(6)。An electric drilling rig / workover rig micro-grid system based on flywheel energy storage technology is characterized in that it includes a power system (1), which is in turn connected with a first converter (3) and a load system (7) ), The power system (1) and the first converter (3) are connected through an AC busbar (2), and the AC busbar (2) is also connected with a second converter (4) in this order. And flywheel energy storage device (5), the electric drilling rig / workover rig microgrid system further includes a microgrid management system (6) connected to the flywheel energy storage device (5).
  2. 根据权利要求1所述的基于飞轮储能技术的电动钻机/修井机微电网系统，其特征在于，所述微电网管理系统(6)包括依次连接的操作显示终端、微电网PLC，所述微电网PLC与所述飞轮储能装置(5)连接。The microgrid system of an electric drilling rig / workover rig based on flywheel energy storage technology according to claim 1, wherein the microgrid management system (6) comprises an operation display terminal, a microgrid PLC connected in sequence, and The micro-grid PLC is connected to the flywheel energy storage device (5).
  3. 根据权利要求1所述的基于飞轮储能技术的电动钻机/修井机微电网系统，其特征在于，所述飞轮储能装置(5)包括柜体(9)，所述柜体(9)内部底面分别设置有隔离变压器(10)、真空泵(12)和真空容器(19)，所述真空容器(19)位于所述隔离变压器(10)和真空泵(12)的中间，所述空容器(19)内部设置有转轴(20)，所述转轴(20)从上至下依次套接设置有第一径向磁轴承(21)、电机(22)、第一轴向磁轴承(23)、飞轮(24)、第二轴向磁轴承(25)和第二径向磁轴承(26)，所述柜体(9)内侧壁还分别固定设置有磁轴承控制器(14)、电机接口(15)、磁轴承直流电源(16)、磁轴承UPS电源(13)和辅助系统控制开关(17)，所述柜体(9)内部顶面还设置有风扇(18)，所述第一径向磁轴承(21)、第一轴向磁轴承(23)、第二轴向磁轴承(25)和第二径向磁轴承(26)均分别与所述磁轴承直流电源(16)连接，所述第一径向磁轴承(21)、第一轴向磁轴承(23)、第二轴向磁轴承(25)和第二径向磁轴承(26)还分别与所述磁轴承UPS电源(13)连接，所述第一径向磁轴承(21)、第一轴向磁轴承(23)、第二轴向磁轴承(25)和第二径向磁轴承(26)还分别与所述磁轴承控制器(14)连接，所述辅助系统控制开关(17)与所述隔离变压器(10)、真空泵(12)、磁轴承控制器(14)、磁轴承直流电源(16)、磁轴承UPS电源(13)、风扇(18)均分别连接，所述电机接口(15)分别与所述电机(22)和微电网PLC连接。The microgrid system of an electric drilling rig / workover rig based on flywheel energy storage technology according to claim 1, wherein the flywheel energy storage device (5) comprises a cabinet (9), and the cabinet (9) The inner bottom surface is respectively provided with an isolation transformer (10), a vacuum pump (12) and a vacuum container (19). The vacuum container (19) is located between the isolation transformer (10) and the vacuum pump (12), and the empty container ( 19) A rotating shaft (20) is provided inside, and the rotating shaft (20) is sleeved with a first radial magnetic bearing (21), a motor (22), a first axial magnetic bearing (23), and The flywheel (24), the second axial magnetic bearing (25) and the second radial magnetic bearing (26), and the inner wall of the cabinet (9) is also fixedly provided with a magnetic bearing controller (14) and a motor interface ( 15), magnetic bearing DC power supply (16), magnetic bearing UPS power supply (13), and auxiliary system control switch (17), a fan (18) is also provided on the top surface of the cabinet (9), and the first diameter The magnetic bearing (21), the first axial magnetic bearing (23), the second axial magnetic bearing (25) and the second radial magnetic bearing (26) are respectively connected to the magnetic bearing DC power supply (16), The first radial magnetic bearing (21) The first axial magnetic bearing (23), the second axial magnetic bearing (25), and the second radial magnetic bearing (26) are respectively connected to the magnetic bearing UPS power supply (13), and the first radial magnetic bearing (13) The bearing (21), the first axial magnetic bearing (23), the second axial magnetic bearing (25), and the second radial magnetic bearing (26) are also connected to the magnetic bearing controller (14), respectively. The auxiliary system control switch (17) and the isolation transformer (10), vacuum pump (12), magnetic bearing controller (14), magnetic bearing DC power supply (16), magnetic bearing UPS power supply (13), fan (18) are all Connected separately, and the motor interface (15) is connected to the motor (22) and the micro-grid PLC, respectively.
  4. 根据权利要求3所述的基于飞轮储能技术的电动钻机/修井机微电网系统，其特征在于，所述转轴(20)的两端还分别设置有保护轴承(11)。The microgrid system of an electric drilling rig / workover rig based on flywheel energy storage technology according to claim 3, characterized in that protective bearings (11) are respectively provided at both ends of the rotating shaft (20).
  5. 根据权利要求1所述的基于飞轮储能技术的电动钻机/修井机微电网系统，其特征在于，所述第二变流器(5)为双向变流器。The microgrid system for an electric drilling rig / workover rig based on the flywheel energy storage technology according to claim 1, wherein the second converter (5) is a bidirectional converter.
  6. 根据权利要求1所述的基于飞轮储能技术的电动钻机/修井机微电网系统，其特征在于，所述动力系统(1)包括多个柴油发电机组(8)。The microgrid system for an electric drilling rig / workover rig based on flywheel energy storage technology according to claim 1, wherein the power system (1) comprises a plurality of diesel generator sets (8).
  7. 根据权利要求1所述的基于飞轮储能技术的电动钻机/修井机微电网系统，其特征在于，所述负载系统(7)为电动钻机、直流钻机或修井机中的任意一种。The microgrid system for an electric drill / workover rig based on flywheel energy storage technology according to claim 1, wherein the load system (7) is any one of an electric drill, a DC drill or a workover rig.
  8. 根据权利要求1所述的基于飞轮储能技术的电动钻机/修井机微电网系统，其特征在于，所述飞轮储能装置(5)被配置为在动力系统(1)的供电单元处于轻载状态时储能，并且在预定条件下向AC母排(2)释放储存的能量，以与所述供电单元一起向所述负载系统(7)供电。The microgrid system for an electric drilling rig / workover rig based on flywheel energy storage technology according to claim 1, wherein the flywheel energy storage device (5) is configured when the power supply unit of the power system (1) is in a light state. Energy is stored in a loaded state, and the stored energy is released to the AC busbar (2) under predetermined conditions to supply power to the load system (7) together with the power supply unit.
  9. 根据权利要求8所述的基于飞轮储能技术的电动钻机/修井机微电网系统，其特征在于，所述微电网管理系统(6)被配置为确定所述交流母排(2)的电压或流过交流母排(2)的电流是否发生突变，并且在所述交流母排(2)的电压突然降低或者流过交流母排(2)的电流突然降低时控制所述飞轮储能装置(5)释放储存的能量。The electric power rig / workover rig microgrid system based on flywheel energy storage technology according to claim 8, characterized in that the microgrid management system (6) is configured to determine the voltage of the AC busbar (2) Or whether the current flowing through the AC busbar (2) changes abruptly, and controls the flywheel energy storage device when the voltage of the AC busbar (2) suddenly decreases or the current flowing through the AC busbar (2) suddenly decreases (5) Release stored energy.
  10. 根据权利要求1所述的基于飞轮储能技术的电动钻机/修井机微电网系统，其特征在于，所述AC母排(2)为600VAC母排。The microgrid system for an electric drilling rig / workover rig based on flywheel energy storage technology according to claim 1, wherein the AC busbar (2) is a 600VAC busbar.
PCT/CN2019/105511 2018-09-18 2019-09-12 Electric drilling rig/workover rig microgrid system based on flywheel energy storage technology WO2020057423A1 (en)

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