CN111193283A - Automatically regulated switch based on intelligent operation control of little electric wire netting - Google Patents
Automatically regulated switch based on intelligent operation control of little electric wire netting Download PDFInfo
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- 238000004146 energy storage Methods 0.000 claims description 17
- 238000010248 power generation Methods 0.000 claims description 12
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
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- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
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Abstract
An automatic regulating exchanger based on micro-grid intelligent operation control is composed of four units of an intelligent selection power supply access exchange unit, an automatic regulating exchange unit, an electric energy transmission control unit and an Internet of things sensing information exchange report unit, belongs to a double-bus micro-grid four-layer control and management device, and is also a micro-grid closed loop level optimization operation control device, the capacity of intelligent selection power supply access and automatic exchange optimization operation control is added in a double-bus alternating current and direct current hybrid micro-grid, the amplitude of double buses is kept stable, the optimal time of the micro-grid parallel operation and isolated grid operation is predicted in real time, black start is executed in a coordinated and rapid mode through an automatic regulating control device, a relay bus protector, an automatic exchange start and stop output controller, the black start is executed in a coordinated mode from the aspects of safety and economic operation of a power grid and the micro-grid, and the double-bus micro-grid exchange power is scheduled, and meanwhile, the regulation control command of a superior power distribution network is received, the optimal economic operation time of grid-connected operation and isolated network operation of the double-bus hybrid micro-grid is realized, and the utilization efficiency of the distributed clean energy is greatly improved.
Description
Technical Field
The invention relates to the field of 'automatic adjustment switch based on micro-grid intelligent operation control', in particular to an adjustment control mode of changing voltage, current, power, frequency, compensation, energy storage, grid connection, power supply, temperature monitoring and heat dissipation treatment in micro-grid operation, and a digital technology is adopted to simplify a plurality of switching elements in micro-grid operation. The power supply guarantee capability of the micro-grid system and the efficiency of grid-connected power generation with an external grid are improved, and the utilization rate and the operation safety guarantee of the multi-point distributed power supply are greatly improved.
Background
At present, when a known microgrid operates in an isolated grid, a static switch is arranged between the microgrid and a large power grid, the static switch controllably receives or transmits electric energy, is an electronic component with an alternating current switch function, and is suitable for operation control of the alternating current microgrid. And in the aspect of interconnection communication, a power router is generally adopted to monitor the operation state of the micro-grid and report conventional power operation data. The disadvantages are that: the passive data acquisition generally uses an alternating-current micro-grid, the micro-grid optimized operation control and the amplitude and the exchange power of double buses cannot be intelligently analyzed and automatically adjusted, the optimal prediction time of the micro-grid-connected operation and the isolated grid operation is not complete, the use efficiency of clean energy is low, the electric energy conversion links are more, the electric energy loss in the micro-grid is large, the operation control is complex, and the electric operation faults in various aspects are easily generated.
Disclosure of Invention
In order to overcome the defects, the invention provides an automatic adjusting switch based on the intelligent operation control of a microgrid (also called an intelligent automatic adjusting switch) as an important component for implementing a microgrid structure, which can not only intelligently exchange and receive, intelligently adjust the amplitude of electric energy and optimize operation control in an alternating current and direct current mixed microgrid, but also can transmit various internet of things sensing information in the microgrid, and can stably realize an electric energy transmission mode of automatic selectivity, execution rapidity, adjustment sensitivity and operation reliability of various clean energy sources of the double-bus microgrid.
The utility model provides an automatically regulated switch based on intelligent operation control of little electric wire netting which characterized in that: the capacity of intelligently selecting power access and automatically exchanging and optimizing operation control is added in a double-bus alternating current and direct current hybrid micro-grid, the amplitude of double buses is kept stable, the optimal time of grid-connected operation and isolated network operation of the micro-grid is customized in real time, the electric energy transmission scheduling strategy is accurately executed, the alternating current and direct current coordinated operation control speed is higher, the line cost and the distributed energy loss are reduced, the utilization efficiency of distributed clean energy is improved, sensitive automatic adjustment and exchange operation is realized, reliable electric energy transmission operation control is realized, rapid thing networking sensing and information transmission are realized, and the operation data of the micro-grid is accurately received, sent and reported.
The invention relates to a device for controlling the closed-loop optimized operation of a micro-grid, which consists of four units, namely an intelligent selection power access switching unit, an automatic adjustment switching unit, a power transmission control unit and an Internet of things sensing information switching report unit, belongs to a four-layer control and management device of a double-bus micro-grid, and is also a device for controlling the closed-loop optimized operation of the micro-grid.
The utility model provides an automatically regulated switch based on intelligent operation control of little electric wire netting which characterized in that: the input end of the power supply system is connected with a photovoltaic power supply, a wind power supply, a fuel cell power supply, a mobile power supply and a power grid power supply which are connected with the input port of the power supply system, wherein an off-grid uninterrupted three-phase alternating current reference power supply and a direct current reference power supply are arranged, the power grid power supply access end is a group of bidirectional variable flow control devices, an electric energy scheduling strategy is executed in real time, an internet of things sensor and a sensing transmitter are arranged in each unit, information accessed by the selected power supply is predicted and sent by a load end, double-bus amplitude information and an internet of things information end, black start is executed in a coordinated and rapid mode through an automatic adjusting control device, a bus relay protector, an automatic switching start and stop output controller, the switching power of the double-bus micro-grid is coordinated and scheduled from the aspects of safe and economic operation of the power grid and the micro-grid, and the optimal economic operation time of, the utilization efficiency of the distributed clean energy is greatly improved.
The invention is characterized in that the distributed power supply selected intelligently is switched and transmitted to an automatic adjustment switching unit, comparing with amplitude, frequency and phase parameters of DC reference power supply and AC reference power supply, and sensing information of Internet of things, exchanging data, automatically adjusting amplitude, frequency and phase of DC power supply and AC power supply, in the automatic exchange power supply compensation control module, an instruction for compensating the DC amplitude and the AC amplitude is accurately sent out, the compensation amplitude is automatically adjusted and the power supply quality is monitored, in the double-bus relay protector, an automatic exchange bus transmits electric energy to an intermediate relay protector and an energy storage charging controller, the operation control mode of exchanging a direct current bus and an alternating current bus is automatically adjusted according to the electric power of various loads of a micro-grid, and after various preset electric parameters are synchronous with the electric parameters adjusted on line, the electric energy is transmitted to an energy storage charging device and an electric energy transmission control exchange unit according to prediction.
The optimized starting power supply is switched into a power transmission control unit, a direct current amplitude and an alternating current amplitude are stabilized through a super capacitor assembly, a reactor is selected in a switching mode, the quality and the protection mode of the power supply are further optimized, preset safe operation control parameters are confirmed in a double-bus relay protection sensor, an Internet of things sensor and a transmitter, power supply to various power loads is executed, the unit collects information such as current, voltage and power according to Internet of things sensing information and load feedback, real-time adjustment and real-time switching are carried out on the amplitude and frequency operation on double buses of a micro-grid, the utilization rate of a distributed power supply for real-time grid-connected power generation and uninterrupted power supply to various loads is guaranteed to be maximized, and the reliable and optimal economic operation time of the double buses of the micro-grid is.
The invention discloses an internet-of-things sensing information exchange unit which is divided into six interconnection devices, namely an information exchange device of a power load converter, an electric parameter information receiving and sending control device, a power quality information analysis device, a field video information demodulator, a temperature monitoring information and heat dissipation processing device and an internet-of-things information transmitting and collecting exchange device.
Drawings
The invention is further described in the following with reference to the accompanying drawings and examples
FIG. 1 is a composition interconnection diagram of an automatically adjusting switch based on intelligent operation control of a microgrid
FIG. 2 is a connection diagram of the intelligent selection power access switching unit (6) in FIG. 1
FIG. 3 is a schematic diagram of the connection of the autoregulating switching unit of FIG. 1 (8)
FIG. 4 is a connection diagram of the transporting power exchanging unit (12) in FIG. 1
FIG. 5 is a connection diagram of the exchange report unit and the sensing information transmission of the Internet of things sensing information in FIG. 1 (22)
Figure 1. photovoltaic power supply. 2. A wind power supply. 3. A fuel cell power source. 4. And (5) moving the power supply. 5. A grid power supply. 6. And intelligently selecting a power access switching unit. 7. Dc and ac bus terminals. 8. The switching unit is automatically adjusted. 9. And an energy storage information exchange feedback end. 10. An energy storage charging output terminal. 11. Dc and ac bus terminals. 12. And a power transmission and exchange unit. 13. The ac load controls the access terminal. 14. And a grid-connected power generation control access terminal. 15. The direct current load controls the access terminal. 16. The direct current frequency converter controls the access end. 17. And the unit predicts the information access end of the variable flow controller. 18. And an optical fiber access port of the Internet of things. 19. And (4) connecting the Internet of things information with a port. 20. And (4) connecting the Internet of things information with a port. 21. And the storage battery energy storage information is connected with the port. 22. And the Internet of things sensing information exchange unit. 23. Display, dialogue connection port.
Fig. 24. sensor and protection module. 25. And a current transformation and sensor protection module. 26. And a current transformation and sensor protection module. 27. A sensor and a protection module. 28. Bidirectional current transformation and sensor protection module. 29. Automatic adjustment control device. 30. An internet of things sensing transmitter. 31. Double bus relay protection device. 32. And the Internet of things sensing information exchange module. 33. And an alternating current transmission intermediate controller. 34. An AC output control device. 35. And a direct current transmission intermediate controller. 36. A DC output control device. 37. Three-phase ac and dc reference power supplies.
Fig. 38 shows a dc and ac amplitude regulator. 39. Automatic switching power supply compensation control device. 40. An internet of things sensing transmitter. 41. Bus relay protection device. 42. And a power quality intermediate controller. 43. Power output relay protection device. 44. Energy storage intermediate control ware that charges. 45. A charge controller. 46. And the Internet of things sensing information exchange module. 47. Three-phase ac and dc reference power supplies.
Figure 48 shows an arrangement of supercapacitor pack assemblies. 49. Reactor subassembly and automatic exchange controlling means. 50. An internet of things sensing transmitter. 51. Double-bus exchange and relay protection device. 52. And an AC load intermediate controller. 53. Alternating current power output control device. 54. And a grid-connected power generation intermediate controller. 55. And the grid-connected inverter is connected to the control device. 56. A DC load intermediate controller. 57. And a direct current electric energy output control device. 58. Direct current frequency conversion load intermediate controller. 59. The direct current frequency converter is connected to the control device. 60. And the Internet of things sensing information exchange module. 61. And the unit predicts a variable flow controller module. 62. Three-phase ac and dc reference power supplies.
In the attached figure 63, the information exchange device of the electric load current transformation equipment. 64. And the electrical parameter information receiving and sending control device. 65. Power quality information analysis device. 66. A sensor information modulator. 67. An internet of things collection information exchange device. 68. And a field video information demodulator. 69. Temperature monitoring information and heat dissipation processing apparatus. 70. And the Internet of things information is transmitted to the convergence exchange device. 71. Thing networking operation platform device. 72. Three-phase ac and dc reference power supplies.
Detailed Description
In the attached drawing, an automatic adjusting switch based on micro-grid intelligent operation control is composed of four units (6), (8), (12) and (22), (1) a photovoltaic power supply, (2) a wind power supply, (3) a fuel cell power supply, (4) a mobile power supply and (5) a power grid power supply are all connected to a connector of an intelligent selection power supply connection switching unit (6), the photovoltaic power supply and the wind power supply are transmitted to the automatic adjusting switching unit (8) through a direct current bus end and an alternating current bus end (7), information of adjustment and switching is converted into a power supply through an energy storage information exchange feedback end (9) and is transmitted to an energy storage charging output end (10) to charge a storage battery, the other side of the automatic adjusting switch is communicated with the alternating current bus end (12) through a direct current bus end (11) and an alternating current bus end (12) to transmit instructions to respectively start, close an alternating current load control access end, (14) a grid-connected power generation control, (16) The direct current frequency converter controls the normal operation control of the access end and conveys electric energy according to prediction, wherein (17) a unit predicts that an information access port of a converter controller is a control signal for starting and closing the converter when various loads in the unit supply power, a port (12) for conveying the electric energy exchange unit is provided with (18) an Internet of things optical fiber access port and (19) an Internet of things information connection port, a port (8) for automatically adjusting the exchange unit is provided with (20) an Internet of things information connection port and (21) a storage battery energy storage information connection port, the port (6) and an intelligent selection power access exchange unit are interconnected to form an interconnection network, sensor information in each unit of the automatically adjusting exchanger based on micro-grid intelligent operation control is transmitted to (22) the Internet of things sensing information exchange unit, intelligent four-layer operation control management is realized, and the intelligent four-layer operation control management is realized through (, And the conversation connection port is connected with a large screen to display, optimize, run, control and exchange data and interact conversation.
In (6) an intelligent selection power access switching unit, (24) a sensor and protection module are connected with (1) a photovoltaic power supply, (25) a current transformation and sensor protection module is connected with (2) a wind power supply, (26) a current transformation and sensor protection module is connected with (3) a fuel cell power supply, (27) a sensor and protection module is connected with (4) a mobile power supply, (28) a bidirectional current transformation and sensor protection module is connected with (5) a power grid power supply, and is connected with (29) an automatic regulation control device through an intelligent selection power access (29) and communicated with (31) a double-bus relay protection device, and commands (33) an alternating current transmission intermediate controller, (35) a direct current transmission intermediate controller to rapidly start and close (34) an alternating current output control device, and (36) a direct current output control device to transmit electric energy to a load, wherein sensor signals are all transmitted to (30) an object-linked sensing transmitter, and transmitting (32) the data to (22) the data exchange unit for modulation output by the sensing information exchange module of the Internet of things, wherein (37) a three-phase alternating current and direct current reference power supply provides an operating power supply for (6) the intelligent selection power supply access exchange unit.
In (8) the automatic regulating exchange unit, (38) when the DC and AC amplitude regulator finds that the amplitudes have difference in operation, instructing (39) an automatic switching power supply compensation control device, and (41) a bus relay protection device to perform amplitude compensation, monitoring the power supply quality by a power supply quality intermediate controller (42), automatically connecting (43) a power supply output relay protection device after the power supply quality intermediate controller meets the standard, and transmitting electric energy according to prediction, simultaneously, the energy storage charging intermediate controller is started (44) and connected (45) with the charging controller to charge the storage battery, wherein, the sensor signals are all sent into (40) the sensor transmitter of the Internet of things, are transmitted into (22) the information exchange unit of the Internet of things by the information exchange module of the Internet of things sensor (46) to be modulated and output, wherein (47) the three-phase ac and dc reference supplies provide operating power to (8) the autoregulating switching unit.
In the (12) transmitted power exchange unit, (48) a super capacitor assembly device cooperates with (49) a reactor assembly and an automatic exchange control device to ensure the power supply to be stable, the super capacitor assembly device is connected with (51) a double-bus exchange and relay protection device, a single-bus operation or double-bus operation mode is exchanged according to an internet of things information instruction, an alternating current load intermediate controller is instructed (52) to connect (53) an alternating current power output control device to transmit power to a load, a grid-connected power generation intermediate controller and a grid-connected inverter are instructed (55) to connect to a control device for grid-connected power generation in real time, in the (51) double-bus exchange and relay protection device, a direct current load intermediate controller is instructed (56) to connect (57) a direct current power output control device to transmit power to the direct current load, a direct current frequency conversion load intermediate controller is connected (58) at the same time, a direct current frequency converter access control device is started (59, the system comprises a sensor module, a unit prediction conversion controller information access port, a distributed power supply, an Internet of things optical fiber access port and a power transmission power exchange unit (12), wherein sensor signals of all points are transmitted to (50) an Internet of things sensing transmitter and (60) an Internet of things sensing information exchange module to be modulated and output, the unit prediction conversion controller module (61) is connected with the unit prediction conversion controller information access port (17), the control signals are control signals for starting, metering and closing the converter when various loads in the unit supply power, the highest utilization rate of the distributed power supply is guaranteed, the Internet of things optical fiber access port (18) is interconnected with the power transmission power exchange unit (12), and a three-phase alternating current and direct current reference power.
In the (22) things-linkage sensing information exchange unit, (63) electricity load current transformation equipment information exchange device unit, (64) electricity parameter information receiving and sending control device, (65) power quality information analysis device, (66) sensing information modulator, (67) things-linkage collection information exchange device, (68) field video information demodulator, (69) temperature monitoring information and heat dissipation processing device, which are sequentially transmitted to (70) things-linkage information transmission collection exchange device, by the interconnection of data exchange and (71) an internet of things operating platform device, the safe operation outside and inside the network of the distributed power supply, regulation and exchange, energy storage and charging, compensation optimization, load output control and grid-connected power generation can be ensured by realizing the operation and scheduling strategy of the double-bus micro-grid, wherein (72) the three-phase AC and DC reference power supply is an uninterrupted reference power supply for ensuring (22) the Internet of things sensing information exchange unit to operate uninterruptedly.
Claims (5)
1. The utility model provides an automatically regulated switch based on intelligent operation control of little electric wire netting which characterized in that: the system consists of four units (6), (8), (12) and (22), (1) a photovoltaic power supply, (2) a wind power supply, (3) a fuel cell power supply, (4) a mobile power supply and (5) a power grid power supply are all connected to a connector of an intelligent selection power supply access switching unit (6), and are transmitted to an automatic adjustment switching unit (8) through a direct current bus end and an alternating current bus end (7), the adjustment switching information is converted into the power supply through an energy storage information exchange feedback end (9) and is transmitted to an energy storage charging output end (10) to charge a storage battery, the direct current bus end and the alternating current bus end (11) are communicated with the power transmission switching unit (12) on the other side, and an instruction is sent to respectively start and close an alternating current load control access end (13), a grid-connected power generation control access end (14), a direct current load control access end (15) and a direct current frequency converter control access end (16) to, the electric energy is transmitted according to the prediction, wherein (17) the unit predicts the control signal for starting and closing the converter when the information access port of the converter controller is powered by various loads in the unit, the port of the power transmission exchange unit (12) is provided with an Internet of things optical fiber access port (18) and an Internet of things information connection port (19), the automatic adjusting exchange unit (8) is provided with an Internet of things information connection port (20), a storage battery energy storage information connection port (21) and an intelligent selection power supply access exchange unit (6) which are interconnected to form an interconnection network, sensor information in each unit of the automatic adjusting exchange based on micro-grid intelligent operation control is transmitted to the Internet of things sensing information exchange unit (22), and intelligent four-layer operation control management is realized, wherein, the large screen display is connected with the display and dialogue connecting port (23) to optimally run, control and exchange data and interwork dialogue.
2. The automatic regulating switch based on the intelligent operation control of the microgrid according to claim 1, characterized in that: in (6) an intelligent selection power access switching unit, (24) a sensor and protection module are connected with (1) a photovoltaic power supply, (25) a current transformation and sensor protection module is connected with (2) a wind power supply, (26) a current transformation and sensor protection module is connected with (3) a fuel cell power supply, (27) a sensor and protection module is connected with (4) a mobile power supply, (28) a bidirectional current transformation and sensor protection module is connected with (5) a power grid power supply, and is connected with (29) an automatic regulation control device through an intelligent selection power access (29) and communicated with (31) a double-bus relay protection device, and commands (33) an alternating current transmission intermediate controller, (35) a direct current transmission intermediate controller to rapidly start and close (34) an alternating current output control device, and (36) a direct current output control device to transmit electric energy to a load, wherein sensor signals are all transmitted to (30) an object-linked sensing transmitter, and transmitting (32) the data to (22) the data exchange unit for modulation output by the sensing information exchange module of the Internet of things, wherein (37) a three-phase alternating current and direct current reference power supply provides an operating power supply for (6) the intelligent selection power supply access exchange unit.
3. An automatic regulating switch based on intelligent operation control of a microgrid according to claims 1 and 2, characterized in that: in (8) the automatic regulating exchange unit, (38) when the DC and AC amplitude regulator finds that the amplitudes have difference in operation, instructing (39) an automatic switching power supply compensation control device, and (41) a bus relay protection device to perform amplitude compensation, monitoring the power supply quality by a power supply quality intermediate controller (42), automatically connecting (43) a power supply output relay protection device after the power supply quality intermediate controller meets the standard, and transmitting electric energy according to prediction, simultaneously, the energy storage charging intermediate controller is started (44) and connected (45) with the charging controller to charge the storage battery, wherein, the sensor signals are all sent into (40) the sensor transmitter of the Internet of things, are transmitted into (22) the information exchange unit of the Internet of things by the information exchange module of the Internet of things sensor (46) to be modulated and output, wherein (47) the three-phase ac and dc reference supplies provide operating power to (8) the autoregulating switching unit.
4. An automatic regulating switch based on intelligent operation control of a microgrid according to claims 1, 2 and 3, characterized in that: in the (12) transmitted power exchange unit, (48) a super capacitor assembly device cooperates with (49) a reactor assembly and an automatic exchange control device to ensure the power supply to be stable, the super capacitor assembly device is connected with (51) a double-bus exchange and relay protection device, a single-bus operation or double-bus operation mode is exchanged according to an internet of things information instruction, an alternating current load intermediate controller is instructed (52) to connect (53) an alternating current power output control device to transmit power to a load, a grid-connected power generation intermediate controller and a grid-connected inverter are instructed (55) to connect to a control device for grid-connected power generation in real time, in the (51) double-bus exchange and relay protection device, a direct current load intermediate controller is instructed (56) to connect (57) a direct current power output control device to transmit power to the direct current load, a direct current frequency conversion load intermediate controller is connected (58) at the same time, a direct current frequency converter access control device is started (59, the system comprises a sensor module, a unit prediction conversion controller information access port, a distributed power supply, an Internet of things optical fiber access port and a power transmission power exchange unit (12), wherein sensor signals of all points are transmitted to (50) an Internet of things sensing transmitter and (60) an Internet of things sensing information exchange module to be modulated and output, the unit prediction conversion controller module (61) is connected with the unit prediction conversion controller information access port (17), the control signals are control signals for starting, metering and closing the converter when various loads in the unit supply power, the highest utilization rate of the distributed power supply is guaranteed, the Internet of things optical fiber access port (18) is interconnected with the power transmission power exchange unit (12), and a three-phase alternating current and direct current reference power.
5. An automatic regulating switch based on micro-grid intelligent operation control according to claims 1, 2, 3 and 4, characterized in that: in the (22) things-linkage sensing information exchange unit, (63) electricity load current transformation equipment information exchange device unit, (64) electricity parameter information receiving and sending control device, (65) power quality information analysis device, (66) sensing information modulator, (67) things-linkage collection information exchange device, (68) field video information demodulator, (69) temperature monitoring information and heat dissipation processing device, which are sequentially transmitted to (70) things-linkage information transmission collection exchange device, by the interconnection of data exchange and (71) an internet of things operating platform device, the safe operation outside and inside the network of the distributed power supply, regulation and exchange, energy storage and charging, compensation optimization, load output control and grid-connected power generation can be ensured by realizing the operation and scheduling strategy of the double-bus micro-grid, wherein (72) the three-phase AC and DC reference power supply is an uninterrupted reference power supply for ensuring (22) the Internet of things sensing information exchange unit to operate uninterruptedly.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013040837A1 (en) * | 2011-09-25 | 2013-03-28 | 国网电力科学研究院 | Computer monitoring method for microgrid system |
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| CN106887840A (en) * | 2017-03-23 | 2017-06-23 | 西安电子科技大学 | A kind of microgrid control system |
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