CN113608522B - Micro-grid secondary control test platform based on rapid prototype controller - Google Patents
Micro-grid secondary control test platform based on rapid prototype controller Download PDFInfo
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- CN113608522B CN113608522B CN202111152360.XA CN202111152360A CN113608522B CN 113608522 B CN113608522 B CN 113608522B CN 202111152360 A CN202111152360 A CN 202111152360A CN 113608522 B CN113608522 B CN 113608522B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
Abstract
The invention discloses a micro-grid secondary control test platform based on a rapid prototype controller in the technical field of new energy, which comprises a first simulation source, a second simulation source, a third simulation source and a fourth simulation source, wherein one end of the first simulation source is connected with a switch K18, and one end of a switch K18 is connected with a 380V alternating-current power distribution cabinet; one end of the 380V alternating current power distribution cabinet is connected with a power grid simulator, and one end of the power grid simulator is connected with a switch K17. The invention reduces the use cost of the platform by adopting 4 groups of bidirectional AC/DC converters as the analog energy storage micro-network sub-sites and four groups of DC/AC converters as the distributed power drivers of the analog sub-sites, has symmetrical circuit structure, can not only carry out distributed real-time strategy control by a user, but also realize the power supply working situations of energy storage battery simulation, photovoltaic system simulation and wind power generation system simulation through the control program of the external AC/DC converters.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a micro-grid secondary control test platform based on a rapid prototype controller.
Background
In recent years, the grid-connected proportion of new energy (wind, light and storage) in China is greatly improved, the permeability of the new energy in partial areas is greatly improved, China further and definitely puts forward a double-carbon target in 2060 in 9 months in 2020, and by 2030, carbon peak reaching is realized, carbon neutralization is realized in 2060, the attention of China to the earth environment and common homes of human beings is fully reflected, the global climate is concerned in China, and the honest and hard emission reduction is realized. At present, two strategies are mainly adopted for coordination control of wind, light and storage in a micro-grid, one strategy is a centralized control strategy, which is the main successful experience under the traditional large-scale power grid, and by deploying a power dispatching system, information communication is carried out on each node, and then relevant dispatching is carried out, so that coordination control between the traditional generator set and a power plant is realized. In order to increase the inertia of a new energy power supply, the inertia is enhanced by matching energy storage in photovoltaic and wind power generation to enhance the regulation capability for 1 time, and the research of a virtual synchronization technology also becomes a hotspot in recent years.
However, in the current mainstream microgrid platform, because a centralized control strategy of a microgrid energy management system is adopted, a real-time algorithm layer of a distributed power supply is not opened, and only a communication protocol is opened, and a main power generation, namely a core control strategy taking an energy storage inverter as a center is adopted in a general system, the distributed real-time control strategy with more energy storage and less communication is difficult to verify.
Disclosure of Invention
The invention aims to provide a micro-grid secondary control test platform based on a rapid prototype controller, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a micro-grid secondary control test platform based on a rapid prototype controller comprises a first simulation source, a second simulation source, a third simulation source and a fourth simulation source, wherein one end of the first simulation source is connected with a switch K18, and one end of a switch K18 is connected with a 380V alternating-current power distribution cabinet; one end of the 380V alternating-current power distribution cabinet is connected with a power grid simulator, and one end of the power grid simulator is connected with a switch K17; one end of the first analog source is connected with a switch K7, one end of a switch K7 is connected with an analog line impedance AL2, a switch K2 and a switch K9, one end of the analog line impedance AL2 is connected with a switch K6, one end of a switch K6 is respectively connected with a switch K1 and a switch K5, one end of the switch K5 is connected with the second analog source, and one end of a switch K9 is connected with an analog line impedance AL 3; one end of the analog line impedance AL3 is connected with a switch K3, a switch K10, a switch K11 and a switch K12, one end of the switch K10 is connected with a third analog source, one end of the third analog source is connected with a switch K19, one end of the switch K19 is electrically connected with a 380V alternating current power distribution cabinet, and one end of the switch K12 is connected with an analog line impedance AL 4; analog line impedance AL 4's one end is connected with switch K4, switch K14 and switch K15, switch K15's one end is connected with analog line impedance AL1, the one end of second simulation source is connected with switch K21, the one end of fourth simulation source is connected with switch K20, switch K20 and switch K21's one end all are connected with 380V AC distribution cabinet.
Preferably, the first analog source, the second analog source, the third analog source and the fourth analog source each include a set of bidirectional AC/DC converters and a set of DC/AC converters, and each set of bidirectional AC/DC converters is electrically connected to one set of DC/AC converters.
Preferably, one end of the analog line impedance AL1 is connected to a switch K16, one end of the switch K16 is connected to a first load LD1, one end of the switch K9 is connected to a switch K8, one end of the switch K8 is connected to a second load LD2, one end of the switch K11 is connected to a third load LD3, one end of the analog line impedance AL4 is connected to a switch K13, and one end of the switch K13 is connected to a fourth load LD 4.
Preferably, the 380V alternating-current power distribution cabinet is used for accessing 380V three-phase four-wire alternating current power.
Preferably, the switch K1, the switch K2, the switch K3, the switch K4, the switch K5, the switch K6, the switch K7, the switch K8, the switch K9, the switch K10, the switch K11, the switch K12, the switch K13, the switch K14, the switch K15, the switch K16, the switch K17, the switch K18, the switch K19, the switch K20 and the switch K21 jointly form a thyristor switch group, and the thyristor switch group is used for achieving millisecond-level switching control and off-grid seamless switching.
Preferably, the power grid simulator is used for simulating working conditions in an infinite power grid system, wherein the working conditions comprise high harmonic waves and low voltage drops.
Preferably, one end of the power grid simulator is connected with a rapid prototype controller, the rapid prototype controller is locally controlled, and the model of the rapid prototype controller is YXSPACE 6000.
Preferably, one end of the power grid simulator is connected with an energy feedback pulse width modulation rectifier, one end of the power grid simulator is provided with a power grid input end through the energy feedback pulse width modulation rectifier, and the other end of the power grid simulator is provided with a simulation power grid output end.
Preferably, the bidirectional AC/DC converter and the DC/AC converter are used for simulating an energy storage grid or a micro-grid system containing the energy storage grid.
A second objective of the present invention is to provide a cabinet structure for providing an installation space for electrical components in the above-mentioned micro-grid secondary control test platform based on a fast prototype controller, the cabinet structure comprising:
a cabinet body;
the two ventilation components are respectively arranged on the upper side and the lower side of the cabinet body and form a communication structure with the cabinet body, the rotation directions of the lower ventilation component and the upper ventilation component are always opposite, and when the lower ventilation component draws air, the upper ventilation component exhausts air;
the cleaning mechanism is arranged below the ventilation component and used for cleaning the ventilation component;
when the ventilating component is used for ventilating, the cleaning mechanism does not act, and when the ventilating component is used for exhausting, the cleaning mechanism operates.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention focuses on the micro-grid research on the side of the power distribution network, simplifies the power transmission network frame of the traditional moving die platform, keeps the impedance of the analog line, reduces the system cost by reducing the system scale, adds diversified load types, is flexible to use, can be developed by adopting a rapid prototype controller, and can rapidly iterate the distributed real-time control strategy of a scientific research institution;
(2) the invention has the advantages that 4 groups of bidirectional AC/DC converters are used as the sub-sites of the analog energy storage microgrid, and four groups of DC/AC converters are used as the distributed power drivers of the sub-sites of the analog energy storage microgrid, so that the use cost of the platform is reduced, the circuit structure is symmetrical, a user can not only carry out distributed real-time strategy control, but also realize the power supply working situations of energy storage battery simulation, photovoltaic system simulation and wind power generation system simulation through the control program of the external AC/DC converters, and various routes of system topology are realized by adopting the silicon controlled switch group controlled by the rapid prototype controller and leading in the preset program of the external silicon controlled switch group, so that the simulation and research work of more working conditions is realized;
(3) the invention realizes the control of the bidirectional AC/DC converter, the DC/AC converter and the silicon controlled switch group by adopting a plurality of groups of rapid prototype controllers, can also complete the simulation of various scene models by rapidly and conveniently leading in an external example model, can rapidly generate the control algorithm of an actual platform by the algorithm of a user, and can carry out rapid iterative verification on the actual platform;
(4) the bidirectional AC/DC converter and the bidirectional DC/AC converter are connected in a combined mode to form an alternating current feedback load, parameter adjustment of the alternating current feedback load can be performed through a middle open source calculation model based on a rapid prototype controller, more adjustable novel load and power supply combinations are added to the system, the platform can simulate more working conditions, is flexible in combination and low in cost, and the research of a micro-grid secondary real-time control strategy can be realized according to topological structure combination in an island mode given by the current system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a structural diagram of a micro-grid secondary control test platform based on a rapid prototype controller according to the present invention;
FIG. 2 is a system structure diagram of a micro-grid secondary control test platform based on a rapid prototype controller according to the present invention;
FIG. 3 is a power grid simulator connection structure diagram of the micro-grid secondary control test platform based on the rapid prototype controller according to the present invention;
FIG. 4 is a front view of a cabinet body of a micro-grid secondary control test platform based on a rapid prototype controller according to the invention;
FIG. 5 is a sectional side view of a cabinet of the micro-grid secondary control test platform based on the rapid prototype controller according to the present invention;
FIG. 6 is an enlarged schematic view at A in FIG. 5;
FIG. 7 is a partial cross-sectional view of a ventilation component of a micro-grid secondary control test platform based on a rapid prototype controller according to the present invention
Fig. 8 is an enlarged schematic view at B in fig. 7.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a first analog source; 2. a second analog source; 3. a third analog source; 4. a fourth analog source; 5. a 380V alternating current power distribution cabinet; 6. a grid simulator; 10. a cabinet body; 20. a ventilation component; 201. an air duct; 202. filtering with a screen; 30. a cleaning mechanism; 301. a shaft lever; 302. a level adjustment component; 3021. plastic shells; 3022. rotating the disc; 3023. a connecting shaft; 3024. a drive disc; 3025. clamping the column; 303. and (4) scraping the ash.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a little electric wire netting secondary control test platform based on quick prototype controller includes: the device comprises a first analog source 1, a second analog source 2, a third analog source 3 and a fourth analog source 4, wherein the first analog source 1, the second analog source 2, the third analog source 3 and the fourth analog source 4 respectively comprise a group of bidirectional AC/DC converters and a group of DC/AC converters, each group of bidirectional AC/DC converters is electrically connected with one group of DC/AC converters, the bidirectional AC/DC converters and the DC/AC converters are used for simulating an energy storage power grid or a micro-grid system containing the energy storage power grid, one end of the first analog source 1 is connected with a switch K18, one end of the switch K18 is connected with a 380V alternating current power distribution cabinet 5, and the 380V alternating current power distribution cabinet 5 is used for accessing 380V three-phase four-wire alternating current; one end of a 380V alternating current power distribution cabinet 5 is connected with a power grid simulator 6, the power grid simulator 6 is used for simulating the working conditions in an infinite power grid system, the working conditions comprise high harmonic waves and low voltage drops, one end of the power grid simulator 6 is connected with a rapid prototype controller, the rapid prototype controller adopts local control, the model of the rapid prototype controller is YXSPACE6000, one end of the power grid simulator 6 is connected with an energy feedback pulse width modulation rectifier, one end of the power grid simulator 6 is provided with a power grid input end through the energy feedback pulse width modulation rectifier, the other end of the power grid simulator 6 is provided with a simulated power grid output end, and one end of the power grid simulator 6 is connected with a switch K17; one end of the first analog source 1 is connected with a switch K7, one end of a switch K7 is connected with an analog line impedance AL2, a switch K2 and a switch K9, one end of an analog line impedance AL2 is connected with a switch K6, one end of a switch K6 is connected with a switch K1 and a switch K5 respectively, one end of the switch K5 is connected with the second analog source 2, and one end of a switch K9 is connected with an analog line impedance AL 3; one end of the analog line impedance AL3 is connected with a switch K3, a switch K10, a switch K11 and a switch K12, one end of a switch K10 is connected with the third analog source 3, one end of the third analog source 3 is connected with a switch K19, one end of the switch K19 is electrically connected with the 380V alternating-current power distribution cabinet 5, and one end of the switch K12 is connected with an analog line impedance AL 4; one end of an analog line impedance AL4 is connected with a switch K4, a switch K14 and a switch K15, one end of a switch K15 is connected with an analog line impedance AL1, one end of an analog line impedance AL1 is connected with a switch K16, one end of a switch K16 is connected with a first load LD1, one end of a switch K9 is connected with a switch K8, one end of a switch K8 is connected with a second load LD2, one end of a switch K11 is connected with a third load LD3, one end of an analog line impedance AL4 is connected with a switch K13, one end of a switch K13 is connected with a fourth load LD4, one end of a second analog source 2 is connected with a switch K21, one end of a fourth analog source 4 is connected with a switch K20, one ends of the switches K20 and K21 are connected with a 380V AC switch K365, the switches K21 and the switches K21, The switch K15, the switch K16, the switch K17, the switch K18, the switch K19, the switch K20 and the switch K21 jointly form a silicon controlled switch group, and the silicon controlled switch group is used for achieving millisecond-level combination control and seamless switching of off-grid and on-grid.
Wherein, closing the switch K1, the switch K2, the switch K3 and the switch K4 can realize the access of 4 grid-connected points of 4 distributed power supplies, if any switch in the 4 switches is closed, only 1 grid-connected point is present, at the moment, a grid-connected mode of a micro-grid and an infinite grid is formed, the platform simplifies the power transmission grid frame of the traditional moving-die platform by emphasizing the research of the micro-grid at the side of the power distribution network, keeps the impedance of an analog circuit, reduces the system cost by reducing the system scale, and adds diversified load types, the use is flexible, the real-time control strategy of the driving system can be developed by adopting a rapid prototype controller, the distributed real-time control strategy of a scientific research institution can be rapidly iterated, the platform adopts a silicon controlled switch group controlled by adopting the rapid prototype controller, and by leading in a preset program for switching on and off the external silicon controlled switch group, thereby completing various routes of system topology, the simulation and research work of more working conditions is realized, the control of the bidirectional AC/DC converter, the DC/AC converter and the silicon controlled switch group is realized by adopting a plurality of groups of rapid prototype controllers, the simulation of various scene models can be completed by rapidly and conveniently leading in an external example model, meanwhile, the control algorithm of an actual platform can be rapidly generated by the algorithm of a user, and rapid iteration verification can be carried out on the real platform;
wherein, the switch K1, the switch K2, the switch K3 and the switch K4 are disconnected, the working state that the distributed power supplies lose the main power grid can be simulated, at the moment, four distributed power supplies form a ring network, four distributed power supplies can also simulate the disconnection state of an island ring network by disconnecting the interconnection line switches, the switch K6, the switch K9, the switch K12 and the switch K15 are used as interconnection line switches, when the interconnection line switches are all closed, the interconnection line switches are in a parallel connection mode of 4 distributed power supplies and islands under an island mode, at the moment, the control of 4 DC/AC exchanger parts can be controlled by a rapid prototype controller of a rapid prototype controller cabinet, a droop control strategy is selected in the control, but because the voltage and the frequency have difference values with a target value under the strategy, a secondary control research is carried out, and a micro-grid management system can be selected for centralized control during the secondary control research, in the distributed control, respective controllers are needed for control, but near line communication is needed, a multi-agent strategy control platform can be built through the line connection of communication parts of the fast prototype controllers, a distributed real-time control strategy mode in a distributed power supply island mode is formed at the moment, 4 groups of bidirectional AC/DC converters are adopted as an analog energy storage micro-network sub-site, and four groups of DC/AC converters are adopted as distributed power supply drivers of the analog sub-site, so that the use cost of the platform is reduced, the circuit structure is symmetrical, a user can not only carry out distributed real-time strategy control, but also can realize power supply working scenes of energy storage battery simulation, photovoltaic system simulation and wind power generation simulation through control programs of external AC/DC converters;
the whole working principle is that when the device is used, 4 grid-connected points of 4 distributed power supplies can be accessed by closing the switch K1, the switch K2, the switch K3 and the switch K4, and only 1 grid-connected point is provided if any one of the 4 switches is closed, so that a grid-connected mode of a microgrid and an infinite power grid is formed;
the switch K1, the switch K2, the switch K3 and the switch K4 are disconnected, the working state that the distributed power supplies lose a main power grid can be simulated, at the moment, four distributed power supplies form a ring network, four distributed power supplies can also simulate the disconnection state of an island ring network by disconnecting a tie line switch, the switch K6, the switch K9, the switch K12 and the switch K15 are used as tie line switches, when the tie line switches are closed, the 4 distributed power supplies in an island mode are in a parallel connection mode, at the moment, the control of 4 DC/AC exchanger parts can be controlled by a quick prototype controller of a quick prototype controller cabinet, a droop control strategy is selected in the control, but because the voltage and the frequency are different from a target value under the strategy, a secondary control research is carried out, and a micro-grid management system can be selected for centralized control during the secondary control research, in distributed control, respective controllers are needed for control, but communication of a near line is needed, a multi-agent strategy control platform can be built through line connection of communication parts of the rapid prototype controllers, and a distributed real-time control strategy mode in a distributed power supply island mode is formed at the moment.
Referring to fig. 4 to 8, a cabinet structure for providing an installation space for electrical components in the above-mentioned micro-grid secondary control testing platform based on a fast prototype controller includes:
a cabinet body 10;
the two ventilation components 20 are respectively arranged on the upper side and the lower side of the cabinet body 10 and form a communication structure with the cabinet body 10, the rotation directions of the lower ventilation component 20 and the upper ventilation component 20 are always opposite, and when the lower ventilation component 20 draws air, the upper ventilation component 20 discharges air;
a cleaning mechanism 30 disposed below the ventilation member 20 and configured to clean the ventilation member 20;
wherein, when the ventilating member 20 is induced with wind, the cleaning mechanism 30 is not operated, and when the ventilating member 20 is exhausted with wind, the cleaning mechanism 30 is operated.
Specifically, ventilation unit 20 includes dryer 201 and installs the inside fan at dryer 201, and the both sides of dryer 201 all are equipped with filter screen 202, and the fan direction of rotation on two ventilation unit 20 is opposite, and this design aim at no matter adopts last air inlet mode or lower air inlet mode, all possesses the effect that pulls the wind flow between the two.
Specifically, clearance mechanism 30 includes axostylus axostyle 301 and level adjusting part 302, and axostylus axostyle 301 passes through the bearing and sets up in the center department of filter screen 202, and the driven end of level adjusting part 302 is connected with axostylus axostyle 301, and the driving end of level adjusting part 302 is connected in the flabellum center department of fan, and one side of axostylus axostyle 301 is provided with scrapes grey piece 303, it sets up in the bottom of filter screen 202 below to scrape grey piece 303, and can move along filter screen 202 surface.
Wherein, the step-adjusting component 302 comprises a connecting shaft 3023 and a plastic shell 3021 fixed on the lower filter screen 202, a rotatable rotating disk 3022 is arranged inside the plastic housing 3021, a plurality of inclined slots are arranged on the inner edge of the rotating disk 3022, the inclined slots jointly form an annular slot body similar to a ratchet wheel, one side of the rotating disk 3022 is fixedly connected with the shaft lever 301, and the shaft lever 301 can rotatably pass through the plastic case 3021, one end of the connecting shaft 3023 is fixed at the center of the fan blade of the fan, and the other end of the connecting shaft 3023 is fixedly connected with a driving disk 3024 positioned inside the rotating disk 3022, the side edge of the driving disk 3024 is hinged with at least two clamping posts 3025, and the clamp post 3025 is normally retracted into the drive disc 3024 by the force of the torsion spring, when the fan is exhausted, the clamping column 3025 is thrown out of the driving disk 3024 by centrifugal force and clamped inside a certain inclined groove to drive the rotating disk 3022 to rotate.
In addition, the driving disc 3024 is provided with a limiting post for limiting the clamping post 3025, so that the clamping post 3025 can be blocked by the limiting post after being thrown out, and the purpose of driving the rotating disc 3022 to rotate by matching with the inclined slot can be achieved.
Specifically, the arrangement of the step-adjusting component 302 is such that during the operation of the cabinet, when the internal electrical components are operated for a long time, the lower fan rotates to draw the external air into the cabinet 10, in the process, since the rotation direction of the driving disk 3024 rotates along the retraction direction of the clamping post 3025, the clamping post 3025 is not thrown out, and therefore the operation of the fan is less affected, and since the rotating disk 3022 is not driven, the dust scraping component 303 does not rotate, i.e. the filter screen 202 is not scraped, so that during the air induction process, the dust is not squeezed into the cabinet 10 by the dust scraping component 303, the possibility of dust entering is reduced, and at the same time, the upper fan rotates and exhausts the air out of the cabinet 10, thereby forming a channel for air flowing, achieving the heat dissipation effect, and at the same time, the upper fan blades, when exhausting air, the clamping post 3025 is thrown out under the action of centrifugal force, so that the clamping post 3025 is clamped inside the chute, therefore, it scrapes ash 303 and rotates to drive, make the top fan when the exhaust air, can cooperate and scrape ash 303 and blow off the dust on top filter screen 202 surface, reduce the possibility that the dust got into, in addition, the setting of whole cabinet body 10, the rotation direction of two upper and lower fans of usable program periodic control, make the inside below air inlet that can form of cabinet body 10, the top is aired exhaust or the top air inlet, two states are aired exhaust in the below, and switch over to the below and air exhaust, when the top was aired, the motion state of two upper and lower accent level parts 302 is opposite, and then can make the filter screen 202 of below obtain the clearance.
Specifically, the dust scraping member 303 is made of rubber, and a plurality of flexible columnar bodies can be arranged on the surface of the dust scraping member for ejecting dust.
Further, can set up two sets of ash pieces 303 of scraping on every ventilation part 20 at least, every group scrapes ash piece 303 and all includes two, scrape ash piece 303 with two of a set of and be located every filter screen 202 upper and lower both sides respectively, concrete setting mode all can do the suitability adjustment according to this scheme, wherein the fixed problem of relevant accent level part 302, can adopt other platelike or rod-like structure with it fix inside dryer 201 can, do not do specific repeated description here again, in the ventilation part 20 of top, it sets up flexible column body on scraping ash piece 303 to be located the filter screen 202 below, in the ventilation part 20 of below, it sets up flexible column body on scraping ash piece 303 to be located the filter screen 202 top, be arranged in when airing exhaust, ejecting from the mesh hole better with the dust.
In the embodiment of the invention, a scheme of removing dust from the filter screen by using a conventional scraper is utilized, the cabinet structure of the scheme is designed according to actual use scenes, and special effects of fan air induction and air exhaust are utilized, so that the possibility of dust entering the cabinet body 10 is reduced while the integral cleanliness of the filter screen 202 is ensured, particularly, the heat dissipation effect of each electrical element is ensured in the process of a secondary control test of a micro-grid, the influence of the dust on the electrical element is reduced, and the influence of the electrical element on test data is further reduced.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The utility model provides a little electric wire netting secondary control test platform based on quick prototype controller which characterized in that includes: the device comprises a first analog source (1), a second analog source (2), a third analog source (3), a fourth analog source (4), a 380V alternating-current power distribution cabinet (5) and a power grid simulator (6), wherein one end of the first analog source (1) is connected to one end of a switch K18, and the other end of the switch K18 is connected to one end of the 380V alternating-current power distribution cabinet (5);
the other end of the 380V alternating-current power distribution cabinet (5) is connected to one end of a power grid simulator (6), and the other end of the power grid simulator (6) is connected with a switch K17; the other end of the first analog source (1) is connected to one end of a switch K7, the other end of the switch K7 is connected with an analog line impedance AL2, a switch K2 and a switch K9, one end, far away from the switch K7, of the analog line impedance AL2 is connected to one end of a switch K6, the other end of the switch K6 is connected with a switch K1 and a switch K5 respectively, one end, far away from the switch K6, of the switch K5 is connected with one end of the second analog source (2), and one end, far away from the switch K7, of the switch K9 is connected to one end of the analog line impedance AL 3;
the other end of the analog line impedance AL3 is connected with a switch K3, a switch K10, a switch K11 and a switch K12, one end of the switch K10, which is far away from the analog line impedance AL3, is connected with one end of a third analog source (3), the other end of the third analog source (3) is connected with a switch K19, one end of the switch K19, which is far away from the third analog source (3), is electrically connected with one end of a 380V alternating-current power distribution cabinet (5), and one end of the switch K12, which is far away from the analog line impedance AL3, is connected with an analog line impedance AL 4;
the one end that switch K12 was kept away from to analog line impedance AL4 is connected with switch K4, switch K14 and switch K15, the one end that switch K15 kept away from analog line impedance AL4 is connected with analog line impedance AL1, the other end of second analog source (2) is connected to the one end of switch K21, the one end of fourth analog source (4) is connected to the one end of switch K20, the other end of switch K20 and switch K21 all is connected with the one end of 380V AC distribution cabinet (5).
2. The micro-grid secondary control test platform based on the rapid prototype controller according to claim 1, wherein: the first analog source (1), the second analog source (2), the third analog source (3) and the fourth analog source (4) comprise a group of bidirectional AC/DC converters and a group of DC/AC converters, and each group of bidirectional AC/DC converters is electrically connected with one group of DC/AC converters.
3. The micro-grid secondary control test platform based on the rapid prototype controller according to claim 1, wherein: the one end that switch K15 was kept away from to analog line impedance AL1 is connected with switch K16, the one end that analog line impedance AL1 was kept away from to switch K16 is connected with first load LD1, the one end that analog line impedance AL3 was kept away from to switch K9 is connected with switch K8, switch K8's the one end of keeping away from switch K9 is connected with second load LD2, the one end that analog line impedance AL3 was kept away from to switch K11 is connected with third load LD3, the one end that switch K12 was kept away from to analog line impedance AL4 is connected with switch K13, the one end that analog line impedance AL4 was kept away from to switch K13 is connected with fourth load LD 4.
4. The micro-grid secondary control test platform based on the rapid prototype controller according to claim 1, wherein: the 380V alternating-current power distribution cabinet (5) is used for accessing 380V three-phase four-wire alternating current.
5. The micro-grid secondary control test platform based on the rapid prototype controller according to claim 3, wherein: the switch K1, the switch K2, the switch K3, the switch K4, the switch K5, the switch K6, the switch K7, the switch K8, the switch K9, the switch K10, the switch K11, the switch K12, the switch K13, the switch K14, the switch K15, the switch K16, the switch K17, the switch K18, the switch K19, the switch K20 and the switch K21 jointly form a silicon controlled switch group, and the silicon controlled switch group is used for achieving millisecond-level switching control and off-grid seamless conversion.
6. The micro-grid secondary control test platform based on the rapid prototype controller according to claim 1, wherein: the power grid simulator (6) is used for simulating working conditions in an infinite power grid system, wherein the working conditions comprise high harmonic waves and low voltage drops.
7. The micro-grid secondary control test platform based on the rapid prototype controller according to claim 6, wherein: one end of the power grid simulator (6) is connected with a rapid prototype controller, the rapid prototype controller is locally controlled, and the model of the rapid prototype controller is YXSPACE 6000.
8. The micro-grid secondary control test platform based on the rapid prototype controller according to claim 7, wherein: one end of the power grid simulator (6) is connected with an energy feedback pulse width modulation rectifier, one end of the power grid simulator (6) is provided with a power grid input end through the energy feedback pulse width modulation rectifier, and the other end of the power grid simulator (6) is provided with a simulation power grid output end.
9. The micro-grid secondary control test platform based on the rapid prototype controller according to claim 2, wherein: the bidirectional AC/DC converter and the DC/AC converter are used for simulating an energy storage power grid or a micro-grid system containing the energy storage power grid.
10. A cabinet for a micro-grid secondary control test platform based on a fast prototype controller according to any of claims 1 to 9, the cabinet comprising:
a cabinet body (10);
the ventilating components (20) are arranged in two, the two ventilating components (20) are respectively arranged on the upper side and the lower side of the cabinet body (10) and form a communicating structure with the cabinet body (10), the rotating directions of the ventilating component (20) below and the ventilating component (20) above are always opposite, and when the ventilating component (20) below draws air, the ventilating component (20) above exhausts air;
a cleaning mechanism (30) which is arranged below the ventilation component (20) and is used for cleaning the ventilation component (20);
wherein when the ventilation component (20) is induced, the cleaning mechanism (30) does not act, and when the ventilation component (20) exhausts, the cleaning mechanism (30) operates.
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