CN214543626U - Open sea island multipotency complementary direct current micro-grid simulation experiment platform - Google Patents
Open sea island multipotency complementary direct current micro-grid simulation experiment platform Download PDFInfo
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Abstract
The utility model provides an open sea island multipotency complementary direct current microgrid simulation experiment platform, including battery simulation module, a plurality of electricity generation simulation modules, power consumption module and energy management unit, battery simulation module, a plurality of electricity generation simulation modules and power consumption module difference signal connection to energy management unit, battery simulation module, a plurality of electricity generation simulation modules electric power connection respectively to the power consumption module, a plurality of electricity generation simulation modules are including the parallelly connected wind power generation simulation module of each other, photovoltaic power generation simulation module, trend can generate electricity simulation module, wave energy electricity generation simulation module and diesel oil power generation simulation module. Open complementary direct current little electric wire netting simulation experiment platform of island multipotency, applied the RCP quick control prototype and as energy management module, shortened control program development cycle, can avoid too much wasting of resources and time consumption, improve the adaptability of procedure to renewable energy consumption and energy comprehensive utilization demand.
Description
Technical Field
The utility model belongs to renewable energy microgrid application especially relates to an open island multipotency complementary direct current microgrid simulation experiment platform.
Background
The island power supply is an important field of renewable energy micro-grid application, a large amount of renewable energy sources such as wind energy, solar energy, tidal current energy, wave energy and the like are arranged around the island, and a multi-energy complementary micro-grid is established to become a reasonable and effective solution for the island power supply. In order to further and deeply promote the research and development application of the sea island microgrid technology in China, a physical microgrid experiment platform is built, the complementary characteristic and the source-load characteristic of the renewable energy microgrid are simulated, and the experiment verification of the energy management control strategy is carried out. The power generation system can not only increase the safety and stability of the power generation system and ensure the output economy of the power generation system, but also improve the electric energy quality by formulating a reasonable power supply management strategy, thereby enabling the power generation by utilizing renewable energy sources to become a stable and reliable energy conversion mode.
At present, China has made great technical progress in the aspects of micro-grid research and micro-grid experimental platform construction, wherein the experimental platform comprises a full-digital micro-grid simulation platform, a micro-grid semi-physical simulation platform and a full-physical micro-grid simulation platform. The complementary form of wind-light-diesel-storage is adopted in most developed microgrid experiment platforms, no ocean power generation device is involved, and in recent years, the ocean power generation technology makes a technical breakthrough and plays an important role in island microgrids. In addition, most of the power supply management of the existing microgrid is equipment-level optimization control, such as photovoltaic MPPT control and fan limit power control, which cannot meet the dynamic balance requirement of energy in the microgrid, and a hierarchy between equipment needs to be established to perform coordinated optimization control and management on each unit of the microgrid.
Disclosure of Invention
In view of this, the utility model aims at providing an open island multipotency complementary direct current microgrid simulation experiment platform to solve the basic bottleneck problem of island renewable energy industry development.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the utility model provides an open sea island multipotency complementary direct current microgrid simulation experiment platform, includes battery simulation module, a plurality of electricity generation simulation module, power consumption module and energy management unit, battery simulation module, a plurality of electricity generation simulation module and power consumption module signal connection respectively to energy management unit, battery simulation module, a plurality of electricity generation simulation module electric power connection respectively to power consumption module, a plurality of electricity generation simulation module include wind power generation simulation module, photovoltaic power generation simulation module, trend can generate electricity simulation module, wave energy electricity generation simulation module and diesel oil electricity generation simulation module that connect in parallel each other.
Furthermore, the energy management unit comprises an RCP rapid control prototype, a serial server and an upper computer, the RCP rapid control prototype is in signal connection with the serial server, the RCP rapid control prototype is electrically connected to an eighth alternating current contactor, the eighth alternating current contactor is electrically connected to an electrifying button of the RCP rapid control prototype, and the serial server is in signal connection with the upper computer.
Furthermore, the energy consumption module comprises an energy consumption load, a DC/AC converter, a seventh direct current breaker, a seventh direct current contactor, an eighth alternating current contactor and a ninth alternating current contactor, wherein the eighth alternating current contactor and the ninth alternating current contactor are both electrically connected to a power supply, an energy consumption load signal is connected to the RCP quick control prototype, the energy consumption load is electrically connected to the DC/AC converter and the ninth alternating current contactor, the ninth alternating current contactor is electrically connected to an energy consumption load power-on button, the DC/AC converter is electrically connected to the seventh direct current contactor and the eighth alternating current contactor through the seventh direct current breaker respectively, and the eighth alternating current contactor is electrically connected to the DC/AC converter power-on button.
Further, the tenth dc contactor is electrically connected to a three-phase power source and a main electric switch.
Further, the battery simulation module comprises a battery simulator, a DC/DC bidirectional converter, a sixth direct current contactor, a sixth direct current breaker, a sixth alternating current contactor and a seventh alternating current contactor, wherein the battery simulator is connected to the serial server through a communication line, the battery simulator is electrically connected to the N pole, the PE pole, the seventh alternating current contactor and the DC/DC bidirectional converter respectively, the DC/DC bidirectional converter is electrically connected to the sixth alternating current contactor, and the sixth alternating current contactor is electrically connected to the tenth direct current contactor, the N pole, the PE pole and the DC/DC bidirectional converter power-on button respectively; the DC/DC bidirectional converter is also electrically connected to a sixth direct current breaker through a sixth direct current contactor; and the sixth direct current breaker is connected to a seventh direct current contactor, and the seventh alternating current contactor is respectively connected to the tenth direct current contactor and a power-on button of the battery simulator.
Furthermore, the power generation simulation module comprises a power generation simulator, an alternating current contactor, a DC/DC converter, a direct current contactor and a direct current breaker, wherein the power generation simulator is connected to the RCP rapid control prototype through signals, the alternating current contactor is connected to a power supply, the power generation simulator is electrically connected to the alternating current contactor and the DC/DC converter respectively, and the DC/DC converter is connected to the direct current breaker through the direct current contactor; the dc breaker is electrically connected to the seventh dc contactor.
Furthermore, the tidal current energy power generation simulation module comprises a tidal current energy power generation simulator, a third DC/DC converter, a third direct current contactor, a third direct current breaker and a third alternating current contactor, wherein the tidal current energy power generation simulator is connected to the energy management unit through signals, the third alternating current contactor is connected to a power supply and a power-on button of the tidal current energy power generation simulator, the tidal current energy power generation simulator is electrically connected to the third alternating current contactor and the third DC/DC converter respectively, and the third DC/DC converter is connected to the third direct current breaker through the third direct current contactor; the third dc breaker is electrically connected to the seventh dc contactor.
Furthermore, the wave energy power generation simulation module comprises a wave energy power generation simulator, a fourth DC/DC converter, a fourth direct current contactor, a fourth direct current breaker and a fourth alternating current contactor, the wave energy power generation simulator is connected to the energy management unit through signals, the fourth alternating current contactor is connected to a power supply and a power-on button of the wave energy power generation simulator, the wave energy power generation simulator is electrically connected to the fourth alternating current contactor and the fourth DC/DC converter respectively, and the fourth DC/DC converter is connected to the fourth direct current breaker through the fourth direct current contactor; the fourth dc breaker is electrically connected to the seventh dc contactor.
Further, the diesel power generation simulation module comprises a diesel power generation simulator, a fifth DC/DC converter, a fifth DC contactor, a fifth DC circuit breaker and a fifth AC contactor, wherein the diesel power generation simulator is connected to the energy management unit through signals, the fifth AC contactor is electrically connected to the power supply and a power-on button of the diesel power generation simulator, the photovoltaic power generation simulator is electrically connected to the fifth AC contactor and the fifth DC/DC converter respectively, and the fifth DC/DC converter is connected to the fifth DC circuit breaker through the fifth DC contactor; the fifth dc breaker is electrically connected to the seventh dc contactor.
Furthermore, the open sea island multi-energy complementary direct current microgrid simulation experiment platform further comprises a piano type control platform for integrating an upper computer and control buttons.
Compared with the prior art, open island multipotency complementary direct current little electric wire netting simulation experiment platform have following advantage:
(1) open complementary direct current little electric wire netting simulation experiment platform of island multipotency, applied the RCP quick control prototype and as energy management module, the RCP quick control prototype directly links to each other with the electricity generation simulator, is equipped with the communication, can realize algorithm and achievement and verify fast, can find the problem that exists among the control algorithm, shortened development cycle, can avoid too much wasting of resources and time consumption, improve the adaptability of procedure to renewable energy consumption and energy comprehensive utilization demand.
(2) Open sea island multipotency complementary direct current microgrid simulation experiment platform, to the uncertainty of each power generation unit's power characteristic, load and microgrid's complexity, the various operational mode of comprehensive consideration microgrid and equipment running condition, level from the equipment room is to power generation facility, energy memory, diesel oil stand-by power supply, load carry out coordinated optimization control and management.
(3) Open complementary direct current little electric wire netting simulation experiment platform of island multipotency, not only include physical hardware system, still possess operation control and energy management function, be a practical basic research platform, combine renewable energy variety's variety, system dynamic's complexity and the uncertainty in the operation, the analytical simulation multiscale, the multipotency complementary little electric wire netting operational characteristic of multiplex condition, research and verification little electric wire netting operating stability, security and management control technique, to the analysis of new generation island comprehensive energy system, operation management and planning design provide technical reference, effectively solve the basic bottleneck problem of island renewable energy industry development of island.
(4) Open complementary direct current microgrid simulation experiment platform of island multipotency, adopt many direct current power supply able to programme to replace wind-force, photovoltaic, trend ability, wave energy and diesel oil electricity generation simulator, form the complementary electricity generation form of multipotency source, through battery simulator buffering and storage, through the power supply of the switching-over load that becomes, the stand-by power supply when diesel oil electricity generation simulator is not enough as the energy.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a control schematic diagram of an open sea island multipotency complementary dc microgrid simulation experiment platform according to an embodiment of the present invention.
Description of reference numerals:
1-a wind power generation simulator; 101-a first DC/DC converter; 102-a first dc contactor; 103-a first dc breaker; 104-a first ac contactor; 2-a photovoltaic power generation simulator; 201-a second DC/DC converter; 202-a second dc contactor; 203-a second dc breaker; 204-a second ac contactor; 3-tidal current energy power generation simulator; 301-a third DC/DC converter; 302-a third dc contactor; 303-third dc breaker; 304-a third ac contactor; 4-wave energy power generation simulator; 401-a fourth DC/DC converter; 402-a fourth dc contactor; 403-fourth dc breaker; 404-a fourth ac contactor; 5-diesel power generation simulator; 501-a fifth DC/DC converter; 502-a fifth dc contactor; 503-a fifth dc breaker; 504-a fifth ac contactor; 6-a battery simulator; 601-DC/DC bidirectional converter; 602-a sixth dc contactor; 603-a sixth dc breaker; 604-a sixth ac contactor; 605-a seventh ac contactor; 7-energy consumption load; 701-DC/AC converter; 702-a seventh dc breaker; 703-a seventh dc contactor; 704-an eighth ac contactor; 705-a ninth ac contactor; 8-RCP rapid control prototype; 801-serial server; 802-eighth ac contactor; 9-a piano type console; 901-battery simulator power-on button; 902-DC/DC bidirectional converter power-on button; 903 — total electrical switch; 904-power-on button of wind power generation simulator; 905-a power-on button of the photovoltaic power generation simulator; 906-power-on button of tidal current energy power generation simulator; 907-a power-on button of the wave energy power generation simulator; 908-diesel power generation simulator power-on button; 909-DC/AC converter power-on button; 910-power-on button for energy consuming load; 911-an upper computer; 912-RCP rapid control prototype power-on button; 10-tenth dc contactor.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model provides an open sea island multipotency complementary direct current microgrid simulation experiment platform, as shown in figure 1, including battery simulation module, a plurality of electricity generation simulation modules, power consumption module and energy management unit, battery simulation module, a plurality of electricity generation simulation module and power consumption module signal connection respectively to the energy management unit, battery simulation module, a plurality of electricity generation simulation module are electric power connection respectively to the power consumption module, battery simulation module and a plurality of electricity generation simulation module are parallelly connected the setting of each other, a plurality of electricity generation simulation modules include wind power generation simulation module, photovoltaic power generation simulation module, trend energy power generation simulation module, wave energy power generation simulation module and the diesel oil electricity generation simulation module that connects in parallel each other.
The island multipotency complementary direct current microgrid simulation experiment platform not only comprises a physical hardware system, but also has the functions of operation control and energy management, and is a practical basic research platform. The method is characterized in that the method combines the diversity of renewable energy types, the complexity of system dynamics and uncertainty in operation, analyzes and simulates the operation characteristics of a multi-time scale and multi-working condition multi-energy complementary micro-grid, researches and verifies the operation stability, safety and management control technology of the micro-grid, provides technical reference for analysis, operation management and planning design of a new generation of island comprehensive energy system, and effectively solves the basic bottleneck problem of island renewable energy industry development.
The energy management unit comprises an RCP rapid control prototype 8 and a serial server 801, the RCP rapid control prototype 8 is in signal connection with the serial server 801, the RCP rapid control prototype 8 is electrically connected to an eighth alternating current contactor 802, the eighth alternating current contactor 802 is electrically connected to an RCP rapid control prototype power-on button 912, and the serial server 801 is in signal connection with an upper computer 911.
The RCP rapid control prototype 8 is applied to a microgrid simulation platform, the physical simulation platform is combined with a digital control system, and a Matlab/Simlink library file is converted into source codes based on the prototype, compiled and downloaded to a hardware development platform, so that the control system is rapidly realized. Through data acquisition and state monitoring of an upper computer, the control effect of the control scheme on the actual object can be checked, and the control parameters can be optimized on line.
The energy consumption module comprises an energy consumption load 7, a DC/AC converter 701, a seventh direct current breaker 702, a seventh direct current contactor 703, an eighth alternating current contactor 704 and a ninth alternating current contactor 705, wherein the eighth alternating current contactor 704 and the ninth alternating current contactor 705 are both electrically connected to a power supply (comprising three power supplies, an N pole and a PE pole which are connected through a tenth direct current contactor 10, and a power supply is used for replacing the specific power supply connection mode in the following); the energy consumption load 7 is connected to the serial server 801 through signals, the energy consumption load 7 is electrically connected to the DC/AC converter 701 and the ninth alternating current contactor 705, the ninth alternating current contactor 705 is electrically connected to the energy consumption load power-on button 910, the DC/AC converter 701 is electrically connected to the seventh direct current contactor 703 and the eighth alternating current contactor 704 through the seventh direct current breaker 702, and the eighth alternating current contactor 704 is electrically connected to the DC/AC converter power-on button 909.
The tenth dc contactor 10 is electrically connected to the three-phase power source and the main electric switch 903.
The battery simulation module comprises a battery simulator 6, a DC/DC bidirectional converter 601, a sixth DC contactor 602, a sixth DC breaker 603, a sixth AC contactor 604 and a seventh AC contactor 605, wherein the battery simulator 6 is connected to the serial server 801 through a communication line, the battery simulator 6 is electrically connected to an N pole, a PE pole, the seventh AC contactor 605 and the DC/DC bidirectional converter 601 respectively, the DC/DC bidirectional converter 601 is electrically connected to the sixth AC contactor 604, and the sixth AC contactor 604 is electrically connected to a tenth DC contactor 10, an N pole, a PE pole and a DC/DC bidirectional converter power-on button 902 respectively; the DC/DC bidirectional converter 601 is also electrically connected to a sixth direct current breaker 603 through a sixth direct current contactor 602; the sixth dc breaker 603 is connected to a seventh dc contactor 703, and the seventh ac contactor 605 is connected to a three-phase power source through a tenth dc contactor 10 at one end and to a battery simulator power-on button 901 at the other end.
The power generation simulation module comprises a power generation simulator, an alternating current contactor, a DC/DC converter, a direct current contactor and a direct current breaker, wherein the power generation simulator is connected to the RCP rapid control prototype 8 through signals, the alternating current contactor is connected to a power supply, the power generation simulator is electrically connected to the alternating current contactor and the DC/DC converter respectively, and the DC/DC converter is connected to the direct current breaker through the direct current contactor; the dc breaker is electrically connected to the seventh dc contactor 703.
Specifically, the wind power generation simulation module comprises a wind power generation simulator 1, a first DC/DC converter 101, a first DC contactor 102, a first DC breaker 103 and a first AC contactor 104, wherein the wind power generation simulator 1 is in signal connection with a serial server 801, the first AC contactor 104 is connected to a power supply and a power-on button 904 of the wind power generation simulator, the wind power generation simulator 1 is electrically connected to the first AC contactor 104 and the first DC/DC converter 101 respectively, and the first DC/DC converter 101 is connected to the first DC breaker 103 through the first DC contactor 102; the first dc breaker 103 is electrically connected to the seventh dc contactor 703.
The photovoltaic power generation simulation module comprises a photovoltaic power generation simulator 2, a second DC/DC converter 201, a second direct current contactor 202, a second direct current breaker 203 and a second alternating current contactor 204, wherein the photovoltaic power generation simulator 2 is connected to a serial server 801 in a signal mode, the second alternating current contactor 204 is connected to a power supply and a photovoltaic power generation simulator power-on button 905, the photovoltaic power generation simulator 2 is electrically connected to the second alternating current contactor 204 and the second DC/DC converter 201 respectively, and the second DC/DC converter 201 is connected to the second direct current breaker 203 through the second direct current contactor 202; the second dc breaker 203 is electrically connected to the seventh dc contactor 703.
The tidal current energy power generation simulation module comprises a tidal current energy power generation simulator 3, a third DC/DC converter 301, a third direct current contactor 302, a third direct current breaker 303 and a third alternating current contactor 304, the tidal current energy power generation simulator 3 is in signal connection with a serial server 801, the third alternating current contactor 304 is connected to a power supply and power-on button 906 of the tidal current energy power generation simulator, the tidal current energy power generation simulator 3 is electrically connected to the third alternating current contactor 304 and the third DC/DC converter 301 respectively, and the third DC/DC converter 301 is connected to the third direct current breaker 303 through the third direct current contactor 302; the third dc breaker 303 is electrically connected to the seventh dc contactor 703.
The wave energy power generation simulation module comprises a wave energy power generation simulator 4, a fourth DC/DC converter 401, a fourth direct current contactor 402, a fourth direct current breaker 403 and a fourth alternating current contactor 404, the wave energy power generation simulator 4 is in signal connection with a serial server 801, the fourth alternating current contactor 404 is connected to a power supply and a power-on button 907 of the wave energy power generation simulator, the wave energy power generation simulator 4 is electrically connected to the fourth alternating current contactor 404 and the fourth DC/DC converter 401 respectively, and the fourth DC/DC converter 401 is connected to the fourth direct current breaker 403 through the fourth direct current contactor 402; the fourth dc breaker 403 is electrically connected to the seventh dc contactor 703.
The diesel power generation simulation module comprises a diesel power generation simulator 5, a fifth DC/DC converter 501, a fifth direct current contactor 502, a fifth direct current breaker 503 and a fifth alternating current contactor 504, wherein the diesel power generation simulator 5 is in signal connection with a serial server 801, the fifth alternating current contactor 504 is electrically connected to a power supply and diesel power generation simulator power-on button 908, the photovoltaic power generation simulator 2 is electrically connected to the fifth alternating current contactor 504 and the fifth DC/DC converter 501 respectively, and the fifth DC/DC converter 501 is connected to the fifth direct current breaker 503 through the fifth direct current contactor 502; the fifth dc breaker 503 is electrically connected to the seventh dc contactor 703.
Preferably, a battery simulator power-on button 901, a DC/DC bidirectional converter power-on button 902, a total electric switch 903, a wind power generation simulator power-on button 904, a photovoltaic power generation simulator power-on button 905, a tidal current energy power generation simulator power-on button 906, a wave energy power generation simulator power-on button 907, a diesel power generation simulator power-on button 908, a DC/AC converter power-on button 909, an energy consumption load power-on button 910, an upper computer 911, and an RCP rapid control prototype power-on button 912 are integrated on the piano type console 9, so that centralized operation is facilitated.
The piano-type console 9 can provide working power supply for each module in the experiment platform by controlling the alternating current contactor. Each power generation simulator is converged on a direct current bus through direct current power output, and each branch is provided with a direct current contactor and a direct current breaker for controlling the power on-off and power isolation of the circuit. The power generation simulators and the power converter are communicated with the piano type console 9, the power characteristics of the power generation simulators can be edited through the upper computer, and real-time electrical parameters of the power generation simulators are also collected.
The utility model provides an open sea island multipotency complementary direct current microgrid simulation experiment platform adopts many programmable DC power supply to replace wind-force, photovoltaic, trend can, wave energy and diesel oil electricity generation simulator, forms multipotency source complementary power generation form, through battery simulator buffering and storage, through the power change switching-over load power supply, the diesel oil electricity generation simulator is as the stand-by power supply when the energy is not enough. The RCP rapid control prototype is used as an energy management system, is an open programmable controller, can make different system operation control strategies, and verifies the reasonability and reliability of the control strategies through experiments.
The open sea island multi-energy complementary direct current micro-grid simulation experiment platform consists of a plurality of direct current micro-grids;
1. power generation simulator
The power generation units are simulated and replaced by programmable direct current power supplies, the output characteristics of the renewable energy sources are simulated according to the scales of time, day and month, 100 power points can be set, and an output power curve is simulated. The installed capacity of each power generation unit can be set according to the scale.
2. Battery simulator
The method can simulate the charge and discharge characteristics of various batteries, and can select and simulate the types, the serial section number, the parallel section number and the SOC indexes of different batteries, thereby comprehensively simulating the output characteristics of the batteries, including the process of battery internal resistance characteristic change in the battery discharge process.
3. Power converter
The DC/DC converter can adjust the output voltage of each power generation simulator and output the output voltage according to a set value; the DC/DC bidirectional converter can realize bidirectional flow of direct-current electric energy; the DC/AC converter can convert the direct current electric energy in the direct current bus into alternating current electric energy with stable output voltage and frequency.
4. Energy consumption load
An adjustable resistive load is selected, and the peak-valley characteristic of the load is simulated according to a set program. The load is divided into an important load and a secondary load, and the load is switched in and out according to the power generation condition. Air cooling heat dissipation needs to be equipped.
5. Standby power supply
The high-frequency switch type direct-current power supply adopting the PWM technology has constant-voltage, constant-current and constant-power mode output, and can realize power compensation.
6. Data acquisition unit
And designing a data acquisition unit (upper computer) to uniformly acquire, check and analyze the equipment operation data and provide comprehensive and comprehensive operation state monitoring. The functions of state monitoring, data acquisition and historical database query of the power supply system are realized.
7. Energy management unit
Based on a Rapid Control model (RCP), including various I/O, software and hardware interruption and other real-time characteristics in an actual system, a perfect and open energy scheduling system can be provided, different optimization targets can be set according to different working conditions, and different operation strategies can be formulated. The control algorithm compiled by Matlab/Simlink is compiled and then downloaded to real-time hardware, and data are transmitted through a hardware I/O and a communication port to quickly realize power electronic control. The man-machine interaction interface runs on a common PC, and mainly realizes the rapid configuration of the system, the issuing of control commands and the state monitoring. The real-time part runs on a real-time controller, and the multi-core real-time CPU runs two cycles: a low priority communication loop and a high priority control algorithm loop. The procedures and algorithms are prior art and are not described herein.
According to the matching relation of the 'source-load' operation characteristics, the characteristics of the island multi-energy complementary micro-grid are combined, the modes are divided according to different time scales, the operation modes under normal working conditions and extreme working conditions are distinguished, an active control technology suitable for renewable energy consumption and energy comprehensive utilization is researched, power generation scheduling, load calling and energy storage control are guided, and long-term and short-term power supply management control strategies are respectively formulated. The devices can be used as schedulable resources to participate in power supply and demand balance control, active power control of a power generation unit, charge and discharge control of a storage battery, load following control of a diesel generator and hierarchical control of power loads become important means of power supply management.
The open sea island multipotency complementary direct current micro-grid simulation experiment platform has the specific functions that:
1. the system can be compatible with a plurality of programmable direct current power supplies, battery simulators and energy consumption loads, and command scheduling can be realized through an operation interface.
2. The installed capacity, the power curve, the energy storage capacity and the depth of discharge of the simulation power generation simulator can be set through the scaling ratio.
3. The device can collect alternating voltage, alternating current, direct voltage and direct current; the acquisition position can be configured by self; the signal loop is isolated from the power loop.
4. The upper computer can obtain main operation parameters of the platform during operation, actual data and scaling data can be switched, the actual data and the scaling data comprise voltage, current, power, generated energy and the like of each module, real-time curve display is achieved, data are stored locally, and historical data can be exported.
5. The automatic protection device can automatically protect under the conditions of faults (overvoltage, overcurrent, short circuit and overtemperature), and fault signals can be latched by hardware and fed back to an operation interface, so that the latching of the hardware can be cleared by software.
6. The control system comprises a sample program of a load tracking mode, the control program is designed in an open mode and can be developed for the second time, and the control logic is adjustable.
The working principle of the open sea island multipotency complementary direct current micro-grid simulation experiment platform is as follows:
when the power is normally supplied: when the upper computer judges that the system power generation power is greater than the load power, the storage battery is charged preferentially, and when the storage battery is full, the upper computer stops the power generation simulator according to the priority; when the upper computer judges that the power generation power is smaller than the load power, the storage battery and the power generation unit jointly supply power to the load, and if the power requirement of the load is not met, the diesel power generation simulator is started to jointly supply power to the load;
when the normal power supply can not meet the requirement of the energy consumption load: the method is characterized in that the minimum times of diesel oil power generation is taken as a control target, the generated power and the load power are compared, when the upper computer judges that if the electric power is smaller than the load power, the storage battery is started to discharge, if the power requirement is not met, the secondary load is cut off, the important load works preferentially, if the power utilization power is still not met, the diesel oil power generation simulator is started finally, and the important load works.
The micro-grid simulation platform applies an RCP rapid control prototype as an energy management module, and programs are flexibly compiled and are optimized conveniently. The RCP rapid control prototype is directly connected with the power generation simulator and is provided with communication, algorithm and result rapid verification can be achieved, and problems in the control algorithm can be found. Before the optimal control program is formed, the development period is shortened, excessive resource waste and time consumption can be avoided, and the adaptability of the program to the requirements of renewable energy consumption and energy comprehensive utilization is improved.
According to the method, various operation modes and equipment operation conditions of the microgrid are comprehensively considered aiming at the power characteristics, load uncertainty and microgrid complexity of each power generation unit, and the power generation device, the energy storage device, the diesel standby power supply and the load are subjected to coordinated optimization control and management from the level among the equipment.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An open sea island multipotency complementary direct current micro-grid simulation experiment platform is characterized in that: the power generation simulation system comprises a battery simulation module, a plurality of power generation simulation modules, an energy consumption module and an energy management unit, wherein the battery simulation module, the plurality of power generation simulation modules and the energy consumption module are respectively connected to the energy management unit through signals, the battery simulation module and the plurality of power generation simulation modules are respectively connected to the energy consumption module through electric power, and the plurality of power generation simulation modules comprise a wind power generation simulation module, a photovoltaic power generation simulation module, a tidal current energy power generation simulation module, a wave energy power generation simulation module and a diesel power generation simulation module which are mutually connected in parallel.
2. The open sea island multipotential complementary DC microgrid simulation experiment platform of claim 1, characterized in that: the energy management unit comprises an RCP rapid control prototype, a serial server and an upper computer, the RCP rapid control prototype is in signal connection with the serial server, the RCP rapid control prototype is electrically connected to an eighth alternating current contactor, the eighth alternating current contactor is electrically connected to an electrifying button of the RCP rapid control prototype, and the serial server is in signal connection with the upper computer.
3. The open sea-island multipotential complementary DC microgrid simulation experiment platform of claim 1 or 2, characterized in that: the energy consumption module comprises an energy consumption load, a DC/AC converter, a seventh direct current breaker, a seventh direct current contactor, an eighth alternating current contactor and a ninth alternating current contactor, the eighth alternating current contactor and the ninth alternating current contactor are both electrically connected to a power supply, energy consumption load signals are connected to the RCP rapid control prototype, the energy consumption load is electrically connected to the DC/AC converter and the ninth alternating current contactor, the ninth alternating current contactor is electrically connected to an energy consumption load power-on button, the DC/AC converter is electrically connected to the seventh direct current contactor and the eighth alternating current contactor through the seventh direct current breaker respectively, and the eighth alternating current contactor is electrically connected to the DC/AC converter power-on button.
4. The open sea island multipotential complementary DC microgrid simulation experiment platform of claim 3, characterized in that: the tenth dc contactor is electrically connected to the three-phase power supply and the main electric switch.
5. The open sea island multipotential complementary DC microgrid simulation experiment platform of claim 3, characterized in that: the battery simulation module comprises a battery simulator, a DC/DC bidirectional converter, a sixth direct current contactor, a sixth direct current breaker, a sixth alternating current contactor and a seventh alternating current contactor, the battery simulator is connected to the serial server through a communication line, the battery simulator is electrically connected to the N pole, the PE pole, the seventh alternating current contactor and the DC/DC bidirectional converter respectively, the DC/DC bidirectional converter is electrically connected to the sixth alternating current contactor, and the sixth alternating current contactor is electrically connected to the tenth direct current contactor, the N pole, the PE pole and a power-on button of the DC/DC bidirectional converter respectively; the DC/DC bidirectional converter is also electrically connected to a sixth direct current breaker through a sixth direct current contactor; and the sixth direct current breaker is connected to a seventh direct current contactor, and the seventh alternating current contactor is respectively connected to the tenth direct current contactor and a power-on button of the battery simulator.
6. The open sea island multipotential complementary DC microgrid simulation experiment platform of claim 3, characterized in that: the power generation simulation module comprises a power generation simulator, an alternating current contactor, a DC/DC converter, a direct current contactor and a direct current breaker, wherein a signal of the power generation simulator is connected to the RCP rapid control prototype, the alternating current contactor is connected to a power supply, the power generation simulator is electrically connected to the alternating current contactor and the DC/DC converter respectively, and the DC/DC converter is connected to the direct current breaker through the direct current contactor; the dc breaker is electrically connected to the seventh dc contactor.
7. The open sea island multipotential complementary DC microgrid simulation experiment platform of claim 3, characterized in that: the tidal current energy power generation simulation module comprises a tidal current energy power generation simulator, a third DC/DC converter, a third direct current contactor, a third direct current breaker and a third alternating current contactor, wherein the tidal current energy power generation simulator is connected to the energy management unit through signals, the third alternating current contactor is connected to a power supply and a power-on button of the tidal current energy power generation simulator, the tidal current energy power generation simulator is electrically connected to the third alternating current contactor and the third DC/DC converter respectively, and the third DC/DC converter is connected to the third direct current breaker through the third direct current contactor; the third dc breaker is electrically connected to the seventh dc contactor.
8. The open sea island multipotential complementary DC microgrid simulation experiment platform of claim 3, characterized in that: the wave energy power generation simulation module comprises a wave energy power generation simulator, a fourth DC/DC converter, a fourth direct current contactor, a fourth direct current breaker and a fourth alternating current contactor, the wave energy power generation simulator is connected to the energy management unit through signals, the fourth alternating current contactor is connected to a power supply and a power-on button of the wave energy power generation simulator, the wave energy power generation simulator is electrically connected to the fourth alternating current contactor and the fourth DC/DC converter respectively, and the fourth DC/DC converter is connected to the fourth direct current breaker through the fourth direct current contactor; the fourth dc breaker is electrically connected to the seventh dc contactor.
9. The open sea island multipotential complementary DC microgrid simulation experiment platform of claim 3, characterized in that: the diesel power generation simulation module comprises a diesel power generation simulator, a fifth DC/DC converter, a fifth direct current contactor, a fifth direct current breaker and a fifth alternating current contactor, the diesel power generation simulator is connected to the energy management unit through signals, the fifth alternating current contactor is electrically connected to a power supply and a power-on button of the diesel power generation simulator, the photovoltaic power generation simulator is electrically connected to the fifth alternating current contactor and the fifth DC/DC converter respectively, and the fifth DC/DC converter is connected to the fifth direct current breaker through the fifth direct current contactor; the fifth dc breaker is electrically connected to the seventh dc contactor.
10. The open sea island multipotential complementary DC microgrid simulation experiment platform of claim 1, characterized in that: the piano type console is used for integrating the upper computer and the control buttons.
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