CN115940303A - Energy optimization and allocation system of direct-current micro-grid - Google Patents
Energy optimization and allocation system of direct-current micro-grid Download PDFInfo
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Abstract
The invention discloses an energy optimization allocation system of a direct-current microgrid, which comprises a direct-current system and an alternating-current system, wherein the direct-current system and the alternating-current system are in bidirectional direct-current and alternating-current conversion connection through a bidirectional DC/AC converter, the direct-current system and the alternating-current system are both electrically connected with an electric quantity monitoring system, and the electric quantity monitoring system is used for monitoring the generated energy and the power consumption of each device in the direct-current system and the alternating-current system. The device can automatically record the generated energy and the power consumption of equipment in the direct current micro-grid and the alternating current micro-grid, automatically calculate the power generation characteristics and the power consumption characteristics of corresponding time periods, control the storage of the electric energy of the renewable energy sources and the generated energy of the non-renewable energy sources by combining the power generation characteristics and the power consumption characteristics, optimally allocate the power supply and the power consumption of the direct current micro-grid and the alternating current micro-grid, improve the power generation utilization rate of the renewable energy sources, reduce the power generation loss of the non-renewable energy sources, and reduce the emission of pollutant gas and the consumption of fossil fuel.
Description
Technical Field
The invention relates to the technical field of energy systems, in particular to an energy optimization and allocation system of a direct-current micro-grid.
Background
The direct-current micro-grid is a micro-grid formed by direct currents, is an important component of a future intelligent power distribution and utilization system, has important significance for promoting energy conservation and emission reduction and realizing sustainable development of energy sources, can efficiently and reliably receive distributed renewable energy power generation systems such as wind and light, energy storage units, electric vehicles and other direct-current power loads compared with the alternating-current micro-grid, and has promising development and application prospects in the aspects of alternating-current and direct-current hybrid micro-grid, alternating-current and direct-current hybrid power distribution network, energy internet and the like;
most of electric energy generated by photovoltaic, fan, fuel cell, battery energy storage unit and the like in the microgrid is direct current or non-power frequency alternating current, common electrical equipment such as personal computers, mobile phones, LED lighting, variable air conditioners, electric automobiles and the like are driven by direct current through corresponding adapters, if the power generation unit or the load is connected into the alternating current microgrid, a multistage energy conversion device formed by corresponding power electronic converters such as DC-DC, DC-AC and AC-DC is needed, and if the direct current microgrid with a proper voltage level is connected, part of alternating current and direct current conversion devices are omitted, so that the cost is reduced, and the loss is reduced. The direct current bus voltage is the only standard for measuring the active power balance in the system, the problems of stable frequency, reactive power and the like in a similar alternating current system do not exist in the system, the direct current micro-grid can be connected with the existing alternating current micro-grid or a power distribution network in parallel through a bidirectional DC-AC converter, the disturbance or fault of the alternating current side can be effectively isolated, and the high-reliability power supply of the load in the direct current system can be ensured.
The defects of the prior art are as follows:
after the direct-current microgrid is merged into the alternating-current microgrid, electric energy generated by the direct-current microgrid is used for direct-current load, battery energy storage and super capacitor energy storage, part of electric energy is merged into the alternating-current microgrid through a bidirectional DC-AC converter, in the direct-current microgrid, the power consumption and the power generation amount in different time periods are different, when the electric energy generated in the time periods is far greater than the power consumption of direct-current microgrid equipment, the electric energy can be stored through the battery energy storage and the super capacitor energy storage, the power transmission amount to the alternating-current microgrid can not be adjusted by combining the power consumption and the power generation amount of the alternating-current microgrid, the loss of the electric energy can be reduced in the output process of the redundant electric energy stored in the battery energy storage and the super capacitor, and the power generation amount of non-renewable energy in the alternating-current microgrid can not be adjusted adaptively.
Disclosure of Invention
The invention aims to provide an energy optimization and allocation system of a direct-current microgrid, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the energy optimization and allocation system of the direct-current micro-grid comprises a direct-current system and an alternating-current system, wherein the direct-current system and the alternating-current system are in bidirectional conversion connection between direct current and alternating current through a bidirectional DC/AC converter;
the direct current system and the alternating current system are both electrically connected with an electric quantity monitoring system, and the electric quantity monitoring system is used for monitoring the generated energy and the electricity consumption of each device in the direct current system and the alternating current system;
the monitoring systems of the direct current system and the alternating current system are respectively and electrically connected with a direct current monitoring system and an alternating current monitoring system, the direct current monitoring system and the alternating current monitoring system are respectively used for analyzing and calculating the generated energy, the power consumption and the power consumption characteristics of the direct current system and the alternating current system, and the direct current monitoring system and the alternating current monitoring system are both connected with a central controller;
the direct current monitoring system and the alternating current monitoring system both comprise:
the data processing module is used for receiving the generated energy, the power consumption and the power consumption characteristics fed back by the direct current system and the alternating current system;
the processor is in data transmission connection with the data processing module and is used for sending an operation instruction and transmitting data;
the data analysis and comparison module is used for analyzing the generated energy, the power consumption and the power consumption characteristics received by the data processing module and feeding back the characteristics to the processor;
and the data storage module is connected with the data analysis and comparison module and is used for storing historical generated energy, power consumption and power consumption characteristic data.
As a further improvement of the present invention, the dc system includes:
the direct current line is connected with the electric quantity monitoring system and used for direct current circuit transmission of the direct current system;
the photovoltaic power generation is connected with the direct current circuit through a DC/DC converter;
the energy storage system is connected with the direct current line through a DC/DC converter;
the photovoltaic power generation system comprises a direct current load, the direct current load is connected with a direct current line, and the photovoltaic power generation provides electric energy for the energy storage system and the direct current load through the direct current line.
As a further improvement of the present invention, the communication system includes:
the alternating current circuit is connected with the electric quantity monitoring system, the alternating current circuit is used for alternating current circuit transmission of the alternating current system, and the direct current circuit and the alternating current circuit are connected through a bidirectional DC/AC converter for bidirectional conversion of direct current and alternating current;
the wind power generation is connected with the alternating current circuit through a bidirectional DC/AC converter;
tidal power generation, wherein the tidal power generation is connected with an alternating current line through a bidirectional DC/AC converter, the wind power generation and the tidal power generation both provide alternating current power to the alternating current line through the bidirectional DC/AC converter, and the wind power generation and the tidal power generation both provide direct current power through a transformer and are connected with the direct current line;
the alternating current circuit is connected with an alternating current load and a direct current load, and the alternating current circuit is connected with the direct current load through an adapter.
As a further improvement of the present invention, the power monitoring system includes:
the current detection module is connected to a main line of the direct current line and a main line of the alternating current line and is used for monitoring the electricity utilization conditions in the direct current system and the alternating current system;
the current and voltage monitoring device comprises a current and voltage monitoring instrument, wherein the quantity of the current and voltage monitoring instrument is the same as that of an energy storage system, a direct current load and an alternating current load, and the current and voltage monitoring instrument is used for recording the electricity consumption and electricity utilization characteristics of the energy storage system, the direct current load and the alternating current load.
As a further improvement of the invention, the current detection module receives the power consumption and the power generation monitored by each current-voltage monitor in a period of time and is respectively marked as W 1、 W 2 、W 3 、W 4 、W 5 、W 6 、W 7 .., wn, and transmitting the calculated power consumption and the calculated power generation amount to the data processing module, wherein the data processing module calculates the average power consumption and the power generation amount in the corresponding zone time, and the calculation formula is as follows:
wherein Wn is the power consumption in the T time period, and T is the time required by Wn consumption and power generation.
As a further improvement of the invention, the data analysis comparison module accepts the data in each time period
Calculating a recurrence formula through iterative clustering:
wherein n is o 、n p 、n q 、n r Respectively, the average values in adjacent time periods in Wn, using Euclidean distance as error, and usingThe sum of squares of the errors E as an objective function to measure cluster quality:
wherein, gi (1, 2, …, K) is one of K-means clustering, P is sampling point power consumption or power generation amount in Gi, ki is mean value of Gi, and power consumption or power generation amount Ai of different power consumption points or power generation points in the time period is obtained, and the formula is as follows:
as a further improvement of the invention, the central controller is connected with the direct current monitoring system and the alternating current monitoring system through wireless data transmission modules, and the central controller is connected with an energy management system.
As a further improvement of the invention, the energy storage system comprises a battery energy storage and a super capacitor.
As a further improvement of the invention, the direct current load comprises a computer, a mobile phone, LED lighting, a variable air conditioner and electric vehicles which are changed into direct current driven power consumption equipment through corresponding adapters.
As a further improvement of the invention, the ac line is connected to the grid via an isolation transformer.
Compared with the prior art, the invention has the beneficial effects that:
1. the direct current monitoring system and the alternating current monitoring system are arranged, the direct current monitoring system and the alternating current monitoring system respectively comprise a data processing module, a processor, a data analysis and comparison module and a data storage module, and the power generation situation of the power consumption situation in corresponding time can be received through the action of the direct current monitoring system and the alternating current monitoring system, so that the power generation characteristic and the power consumption characteristic of the corresponding time period can be automatically calculated;
2. according to the invention, through arranging the electric quantity monitoring system which comprises the current detection module and the current voltage monitor, the electric quantity monitoring system can effectively monitor the electric consumption or the electric energy generation of corresponding equipment in the direct current system and the alternating current system in corresponding time periods through the action of the electric quantity monitoring system, and the data of the electric consumption and the electric energy generation are counted and uploaded;
3. according to the invention, the direct current monitoring system and the alternating current monitoring system are both connected with the central controller, the central controller analyzes the characteristics of generated energy, power consumption and power generation and consumption in corresponding time periods according to the direct current monitoring system and the alternating current monitoring system, optimizes and allocates power supply and power consumption of the direct current micro-grid and the alternating current micro-grid, improves the power generation utilization rate of renewable energy, reduces the power generation loss of non-renewable energy, and reduces the emission of pollution gas and the consumption of fossil fuel.
Drawings
Fig. 1 is an overall schematic block diagram of an energy optimization and allocation system of a direct-current microgrid of the present invention;
fig. 2 is a schematic block diagram of a direct current monitoring system of the energy optimization and allocation system of the direct current microgrid;
fig. 3 is a schematic block diagram of an electric quantity monitoring system of the energy optimization and allocation system of the direct current microgrid;
fig. 4 is a power generation and consumption bar chart of the existing direct current and alternating current microgrid and the direct current and alternating current microgrid of the invention.
In the figure: 1. a direct current system; 101. a direct current line; 102. photovoltaic power generation; 103. an energy storage system; 104. a direct current load; 2. an alternating current system; 21. an AC line; 22. wind power generation; 23. tidal power generation; 24. an alternating current load; 3. an electric quantity monitoring system; 31. a current detection module; 32. a current voltage monitor; 4. a direct current monitoring system; 41. a data processing module; 42. a processor; 43. a data analysis comparison module; 44. a data storage module; 5. an alternating current monitoring system; 6. a central controller; 7. an energy management system; 8. and (4) a power grid.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "fixed," "mounted," "connected," or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. It is to be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed or operated in a particular orientation, and is not to be construed as limiting the invention.
As a further development of the invention, the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or as implying a number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Referring to fig. 1-3, the present invention provides a technical solution: the energy optimization allocation system of the direct current micro-grid comprises a direct current system 1 and an alternating current system 2, wherein the direct current system 1 and the alternating current system 2 are in direct current and alternating current bidirectional conversion connection through a bidirectional DC/AC converter, the direct current system 1 and the alternating current system 2 are both electrically connected with an electric quantity monitoring system 3, the electric quantity monitoring system 3 is used for monitoring the generated energy and the electricity consumption of each device in the direct current system 1 and the alternating current system 2, the monitoring systems of the direct current system 1 and the alternating current system 2 are respectively and electrically connected with a direct current monitoring system 4 and an alternating current monitoring system 5, the direct current monitoring system 4 and the alternating current monitoring system 5 are respectively used for analyzing and calculating the generated energy, the electricity consumption and the electricity consumption characteristics of the direct current system 1 and the alternating current system 2, the direct current monitoring system 4 and the alternating current monitoring system 5 are both connected with a central controller 6, the electric quantity monitoring system 3 monitors the generated energy and the electricity consumption in the time period of the direct current system 1 and the alternating current system 2 during use, the generated energy and the generated energy of the direct current system 1 and the alternating current system 2 are respectively uploaded to the direct current monitoring system 4 and the alternating current monitoring system 5, the generated energy and the electricity consumption characteristics are analyzed by the direct current monitoring system 4 and the alternating current monitoring system 5, the electricity consumption monitoring system 5, the generated energy consumption and the generated energy consumption characteristics are uploaded to a specific power generation time period, and the generated energy consumption characteristics are controlled by the central controller 6, and the central controller, and the generated energy generation are controlled according to the generated energy storage period, and the generated energy consumption characteristics are controlled according to the specific time period, and the generated energy consumption characteristics are controlled by the central controller 6;
the direct current monitoring system 4 and the alternating current monitoring system 5 both comprise a data processing module 41, a processor 42, a data analysis comparison module 43 and a data storage module 44, the direct current monitoring system 4 and the alternating current monitoring system 5 are respectively connected with the data processing module 41, the data processing module 41 is used for receiving the generated energy, the power consumption and the power consumption characteristics fed back by the direct current system 1 and the alternating current system 2, the processor 42 is connected with the data processing module 41 in a data transmission mode, the processor 42 is used for sending operation instructions and transmission data, the data processing module 41 and the processor 42 are respectively electrically connected with the data analysis comparison module 43, the data analysis comparison module 43 is used for analyzing the generated energy, the power consumption and the power consumption characteristics received by the data processing module 41 and feeding back to the processor 42, the data storage module 44 is connected with the data analysis comparison module 43, the data storage module 44 is used for storing history, the power consumption and the power consumption characteristic data, the power consumption data monitored by the data processing module 41 are received by the data processing module 3, the average power consumption and the power generation data in the time corresponding to the section are calculated and transmitted to the data analysis comparison module 43, the power generation control module 42 is used for optimizing and the power generation control of the power generation system by the central processing module 6 and the central control system 6.
In some embodiments of the present invention, the DC system 1 includes a DC line 101, a photovoltaic generator 102, an energy storage system 103, and a DC load 104, the DC line 101 is connected to the electric quantity monitoring system 3, the DC line 101 is used for DC circuit transmission of the DC system 1, the photovoltaic generator 102 is connected to the DC line 101 through a DC/DC converter, the energy storage system 103 is connected to the DC line 101 through a DC/DC converter, the DC load 104 is connected to the DC line 101, and the photovoltaic generator 102 provides electric energy to the energy storage system 103 and the DC load 104 through the DC line 101.
In some embodiments of the present invention, the AC system 2 includes an AC line 21, a wind power generator 22, a tidal power generator 23, and an AC load 24, the AC line 21 is connected to the power monitoring system 3, the AC line 21 is used for AC circuit transmission of the AC system 2, the DC line 101 and the AC line 21 are connected through a bidirectional DC/AC converter for bidirectional DC and AC conversion, the wind power generator 22 is connected to the AC line 21 through the bidirectional DC/AC converter, the tidal power generator 23 is connected to the AC line 21 through the bidirectional DC/AC converter, the wind power generator 22 and the tidal power generator 23 both provide AC power to the AC line 21 through the bidirectional DC/AC converter, the wind power generator 22 and the tidal power generator 23 are both connected to the DC line 101 through a transformer for providing DC power, the AC line 21 is connected to the AC load 24 and the DC load 104, and the AC line 21 is connected to the DC load 104 through an adapter.
In some embodiments of the present invention, the power monitoring system 3 includes a current detection module 31 and a current and voltage monitor 32, the current detection module 31 is connected to the main lines of the dc line 101 and the ac line 21 for monitoring power consumption conditions in the dc system 1 and the ac system 2, and the number of the current and voltage monitors 32 is the same as the number of the energy storage system 103, the number of the dc loads 104 and the number of the ac loads 24, and is used for recording power consumption and power consumption characteristics of the energy storage system 103, the dc loads 104 and the ac loads 24.
In some embodiments of the present invention, the current detection module 31 receives the power consumption and the power generation for a period of time monitored by each current-voltage monitor 32 and is labeled as W 1、 W 2 、W 3 、W 4 、W 5 、W 6 、W 7 .., wn, and transmits it to the data processing module 41, where the data processing module 41 calculates the average power consumption and power generation amount corresponding to the time of the section, and the calculation formula is:
wherein Wn is the power consumption in the T time period, and T is the time required by Wn consumption and power generation. In some embodiments of the present invention, the data analysis and comparison module 43 accepts data over each time period
Calculating a recurrence formula through iterative clustering:
wherein n is o 、n p 、n q 、n r Respectively, averaging values in adjacent time periods in Wn, using euclidean distance as an error, and using the sum of squares E of the errors as an objective function for measuring cluster quality:
wherein Gi1, gi 2, … and Gi are one of K-means clusters, P is the power consumption or power generation amount of a sampling point in Gi, ki is the mean value of Gi, the power consumption or power generation amount Ai of different power consumption points or power generation points in the time period is obtained, and the formula is as follows:
in some embodiments of the present invention, the central controller 6 is connected to the dc monitoring system 4 and the ac monitoring system 5 through a wireless data transmission module, and the central controller 6 is connected to the energy management system 7.
In some embodiments of the invention, the energy storage system 103 includes a battery energy storage and a super capacitor.
In some embodiments of the present invention, the dc loads 104 include computers, mobile phones, LED lighting, variable air conditioners, and electric vehicles that are powered by dc through their respective adapters.
In some embodiments of the invention, the ac line 21 is connected to the grid 8 via an isolation transformer.
The working principle is as follows: the current detection module 31 is connected to the main lines of the direct current line 101 and the alternating current line 21 and used for monitoring power consumption conditions in the direct current system 1 and the alternating current system 2, the current and voltage monitor 32 records power consumption and power generation amount of the energy storage system 103, the direct current load 104 and the alternating current load 24, the data processing module 41 receives power consumption data and power generation data monitored by the power monitoring system 3, average power consumption and power generation amount corresponding to the time of the section are calculated and participate in fig. 4, the data are transmitted to the data analysis and comparison module 43, power consumption and power generation characteristics are calculated and analyzed through the data analysis and comparison module 43 and stored through the data storage module 44, the data are uploaded to the central controller 6 through the processor 42, power supply and power consumption of the direct current system 1 and the alternating current system 2 are controlled through the central controller 6 to be optimized and allocated, the power generation characteristics and power consumption amount of devices in the direct current microgrid can be automatically recorded, power generation characteristics and power generation characteristics corresponding to the time period are automatically calculated, storage and non-renewable energy consumption of renewable energy is controlled by combining the power generation characteristics and the renewable energy consumption is optimized, and the renewable gas pollution is reduced, and the renewable pollution of the renewable fossil fuel is reduced.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Energy optimization allotment system of direct current microgrid, including direct current system (1) and interchange system (2), its characterized in that: the direct current system (1) and the alternating current system (2) are in bidirectional conversion connection of direct current and alternating current through a bidirectional DC/AC converter;
the direct current system (1) and the alternating current system (2) are both electrically connected with an electric quantity monitoring system (3), and the electric quantity monitoring system (3) is used for monitoring the generated energy and the electricity consumption of each device in the direct current system (1) and the alternating current system (2);
the monitoring system of direct current system (1) and alternating current system (2) is electric connection respectively has direct current monitored control system (4) and alternating current monitored control system (5), direct current monitored control system (4) and alternating current monitored control system (5) are used for the generated energy of analysis calculation direct current system (1) and alternating current system (2), power consumption and power consumption characteristic respectively, direct current monitored control system (4) and alternating current monitored control system (5) all are connected with central controller (6).
2. The energy optimization and deployment system of the dc microgrid of claim 1, wherein: the direct current monitoring system (4) and the alternating current monitoring system (5) both comprise:
the direct current monitoring system (4) and the alternating current monitoring system (5) are respectively connected with the data processing module (41), and the data processing module (41) is used for receiving the generated energy, the power consumption and the power consumption characteristics fed back by the direct current system (1) and the alternating current system (2);
the processor (42), the processor (42) is connected with the data processing module (41) in a data transmission way, and the processor (42) is used for sending the operation instruction and transmitting data;
the data analysis and comparison module (43), the data processing module (41) and the processor (42) are respectively electrically connected with the data analysis and comparison module (43), and the data analysis and comparison module (43) is used for analyzing the power generation amount, the power consumption amount and the power consumption characteristics received by the data processing module (41) and feeding back the power generation amount, the power consumption amount and the power consumption characteristics to the processor (42);
the data storage module (44) is connected with the data analysis and comparison module (43), and the data storage module (44) is used for storing historical generated energy, power consumption and power consumption characteristic data.
3. The energy optimization and deployment system of the dc microgrid of claim 2, wherein: the direct current system (1) comprises:
the direct current line (101), the direct current line (101) is connected with the electric quantity monitoring system (3), and the direct current line (101) is used for direct current circuit transmission of the direct current system (1);
a photovoltaic power generation (102), the photovoltaic power generation (102) being connected to the direct current line (101) by a DC/DC converter;
an energy storage system (103), wherein the energy storage system (103) is connected with the direct current line (101) through a DC/DC converter;
a DC load (104), wherein the DC load (104) is connected with a DC line (101), and the photovoltaic power generation (102) provides electric energy for the energy storage system (103) and the DC load (104) through the DC line (101).
4. The energy optimization and deployment system of the DC microgrid of claim 3, wherein: the communication system (2) comprises:
the alternating current circuit (21), the alternating current circuit (21) is connected with the electric quantity monitoring system (3), the alternating current circuit (21) is used for alternating current circuit transmission of the alternating current system (2), and the direct current circuit (101) and the alternating current circuit (21) are connected in a bidirectional direct current and alternating current conversion mode through a bidirectional DC/AC converter;
a wind power generator (22), wherein the wind power generator (22) is connected to an alternating current line (21) through a bidirectional DC/AC converter;
-tidal power generation (23), the tidal power generation (23) being connected to an AC line (21) via a bidirectional DC/AC converter, the wind power generation (22) and the tidal power generation (23) each providing AC power to the AC line (21) via a bidirectional DC/AC converter, the wind power generation (22) and the tidal power generation (23) each providing DC power via a transformer connected to the DC line (101);
the alternating current line (21) is connected with an alternating current load (24) and a direct current load (104), and the alternating current line (21) is connected with the direct current load (104) through an adapter.
5. The energy optimization and deployment system of the DC microgrid of claim 4, wherein: the electric quantity monitoring system (3) comprises:
the current detection module (31) is connected to the main lines of the direct current line (101) and the alternating current line (21) and used for monitoring the electricity utilization conditions in the direct current system (1) and the alternating current system (2); the alternating current circuit (21) is connected with a power grid (8) through an isolation transformer;
the device comprises a current and voltage monitor (32), wherein the quantity of an energy storage system (103), a direct current load (104) and an alternating current load (24) of the current and voltage monitor (32) is the same, and the current and voltage monitor is used for recording the electricity consumption and electricity utilization characteristics of the energy storage system (103), the direct current load (104) and the alternating current load (24).
6. The energy optimization and deployment system of the DC microgrid of claim 5, wherein: the current detection module (31) receives the power consumption and the power generation amount of each current and voltage monitor (32) within a period of time and marks the power consumption and the power generation amount as W 1、 W 2 、W 3 、W 4 、W 5 、W 6 、W 7... Wn and transmitted to the data processing module (41), wherein the data processing module (41) calculates the average power consumption and the power generation amount corresponding to the section time, and the calculation formula is as follows:
wherein Wn is the power consumption in the T time period, and T is the time required by Wn consumption and power generation.
7. The energy optimization and deployment system of the DC microgrid of claim 6, wherein: the data analysis and comparison module (43) accepts the data in each time period
Calculating a recurrence formula through iterative clustering:
wherein n is o 、n p 、n q 、n r Respectively, averaging over adjacent time periods in Wn, using euclidean distance as the error, and using the sum of squares E of the errors as the objective function to measure cluster quality:
wherein, gi (1, 2, …, K) is one of K-means clustering, P is sampling point power consumption or power generation amount in Gi, ki is mean value of Gi, and power consumption or power generation amount Ai of different power consumption points or power generation points in the time period is obtained, and the formula is as follows:
8. the energy optimization and deployment system of the dc microgrid of claim 7, wherein: the central controller (6) is connected with the direct current monitoring system (4) and the alternating current monitoring system (5) through wireless data transmission modules, and the central controller (6) is connected with an energy management system (7).
9. The energy optimization and deployment system of the dc microgrid of claim 8, wherein: the energy storage system (103) comprises a battery energy storage and a super capacitor.
10. The energy optimization deployment system of the dc microgrid of claim 9, wherein: the direct current load (104) comprises a computer, a mobile phone, an LED lighting device, an air conditioner and a power consumption device which is driven by the electric automobile through a corresponding adapter to become direct current.
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| CN116780534A (en) * | 2023-08-16 | 2023-09-19 | 深圳江行联加智能科技有限公司 | Virtual power plant load management method, device, equipment and storage medium |
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| CN116780534A (en) * | 2023-08-16 | 2023-09-19 | 深圳江行联加智能科技有限公司 | Virtual power plant load management method, device, equipment and storage medium |
| CN116780534B (en) * | 2023-08-16 | 2024-01-02 | 深圳江行联加智能科技有限公司 | Virtual power plant load management method, device, equipment and storage medium |
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