CN216959411U - Application experiment system of plug-and-play physical interface equipment - Google Patents
Application experiment system of plug-and-play physical interface equipment Download PDFInfo
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- CN216959411U CN216959411U CN202122895752.7U CN202122895752U CN216959411U CN 216959411 U CN216959411 U CN 216959411U CN 202122895752 U CN202122895752 U CN 202122895752U CN 216959411 U CN216959411 U CN 216959411U
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Abstract
The utility model relates to an application experiment system of plug-and-play physical interface equipment, which is used for testing the plug-and-play physical interface equipment and comprises a power grid, a switch cabinet, a power grid simulator, the plug-and-play interface cabinet, a mobile energy storage box, various types of loads and an energy storage system, wherein one side of the power grid simulator is connected with the power grid through the switch cabinet, the other side of the power grid simulator is connected with the various types of loads, and meanwhile, the power grid simulator is also connected with the alternating current side of the plug-and-play physical interface equipment through the plug-and-play interface cabinet, the direct current side of the plug-and-play physical interface equipment is connected with the energy storage system, the mobile energy storage box is connected with the power grid simulator, the energy storage system comprises a lead-acid battery pack, a lithium iron battery pack and a super capacitor pack, the number of the plug-and-play physical interface equipment is multiple, and the lead-acid battery pack, the lithium iron battery pack and the super capacitor pack are respectively connected with the plug-and-play physical interface equipment in a one-to-one correspondence manner. Compared with the prior art, the plug-and-play physical interface device can integrally meet the experimental requirements of plug-and-play physical interface devices on various working conditions and environments.
Description
Technical Field
The utility model relates to the technical field of power grids, in particular to an application experiment system of plug-and-play physical interface equipment.
Background
Energy storage is an inevitable choice for the development of the future power industry, and is an indispensable role in the future power system due to the requirements in the aspects of large-scale consumption of renewable energy, power peak regulation and frequency modulation, friendly access of distributed energy, user-side demand response, friendly interaction of electric vehicles and power grids and the like. Under the background of large-scale application of energy storage, the grid connection of an energy storage system brings great challenges to the primary grid structure, automation control and management level of a power distribution network. The method comprises the steps of switching of energy storage system off-grid, isolated island operation, grid connection and grid connection operation states, reconfiguration of a distribution network frame during grid connection operation, switching of different consumption modes, primary network structure change during off-grid isolated island operation and the like, which cause polymorphism of power distribution network operation, how to realize flexible and effective control of a battery energy storage system or other controllable resources, and realize smooth switching and stable operation of different operation states of a power distribution network, and is one of the difficulties of energy storage system grid connection coordination control technology.
The plug-and-play energy storage power station is an intelligent energy storage system which realizes high modularization and standardization of BMS, PCS, battery systems and EMS on the aspect of information flow and energy flow and is suitable for controllable, observable, interactive and multi-working-condition autonomous conversion under complex working conditions of a power grid. Plug and play highlights the immediate availability of the battery energy storage system, and supporting this availability is modular, standardized design and manufacture of the energy storage. The modularized and standardized design of the battery energy storage system is beneficial to simplifying the design of the battery energy storage system, facilitating the debugging and maintenance of the battery energy storage system, facilitating the quick construction and quick switching operation of the system, greatly improving the flexibility of the battery energy storage system, and enabling the plug and play of the battery energy storage system to be truly possible.
The power interface equipment required by the connection of various types of energy storage devices and the power grid can be finally classified into two types: the direct current side and alternating current side physical interface technologies are mainly realized through DC/DC and DC/AC power electronic interface technologies, and in order to meet the performance of plug and play, plug and play physical interface equipment of the battery energy storage power station is generated, but the plug and play physical interface equipment of the battery energy storage power station is still in the perfection stage at present, so that an experimental platform for realizing experiments on the plug and play physical interface equipment is urgently needed to be provided.
SUMMERY OF THE UTILITY MODEL
The present invention provides an application experiment system for a plug-and-play physical interface device, which is used for implementing an experiment on the plug-and-play physical interface device, in order to overcome the defects of the prior art.
The purpose of the utility model can be realized by the following technical scheme:
the utility model provides an application experiment system of plug-and-play physical interface equipment for test plug-and-play physical interface equipment, includes electric wire netting, cubical switchboard, electric wire netting simulator, plug-and-play interface cabinet, removes energy storage box, polymorphic type load and energy storage system, one side of electric wire netting simulator is connected through the cubical switchboard electric wire netting, opposite side are connected polymorphic type load, still connect the interchange side of plug-and-play physical interface equipment through plug-and-play interface cabinet simultaneously, the direct current side of plug-and-play physical interface equipment is connected energy storage system, it connects to remove the energy storage box the electric wire netting simulator.
Further, the energy storage system comprises a lead-acid battery pack, a lithium iron battery pack and a super capacitor pack, the number of the plug-and-play physical interface devices is multiple, and the lead-acid battery pack, the lithium iron battery pack and the super capacitor pack are all connected with the plug-and-play physical interface devices in a one-to-one correspondence manner.
Furthermore, the application experiment system also comprises a monitoring signal cabinet and a controller, wherein the monitoring signal cabinet is respectively in communication connection with the plug-and-play physical interface equipment, the lead-acid battery pack, the lithium iron battery pack and the super capacitor pack.
Further, the rated active power of the plug and play physical interface device is 50kw or 100 kw.
Furthermore, one side of the plug and play interface cabinet is provided with a power grid interface, the other side of the plug and play interface cabinet is provided with three alternating current ports, and the plug and play interface cabinet is respectively connected with three plug and play physical interface devices through the three alternating current ports.
Further, the nominal capacity of the lead-acid battery pack is 114.8kWh, the nominal voltage is 574V, and the charge-discharge multiplying power is 0.5C;
the nominal capacity of the lithium iron battery pack is 69.12kWh, the nominal voltage is 691.2V, and the highest charge-discharge multiplying power is 1C;
the nominal energy of the super capacitor bank is 50 kW.40 s, the nominal capacity is 25.7F, and the working voltage range is 282V-480V.
Further, remove the energy storage case and include the box and set up lithium iron phosphate group, automatic fire extinguishing fire control cabinet, 100kWPCS, monitoring cabinet, DCDC direct current cabinet, load cabinet, hydraulic pressure operation cabinet, lighting apparatus and the air conditioner in the box, lithium iron phosphate group, automatic fire extinguishing fire control cabinet, 100kWPCS, monitoring cabinet, DCDC direct current cabinet, load cabinet, hydraulic pressure operation cabinet, lighting apparatus and air conditioner all insert same power supply line.
Further, the top and the left and right sides of box all are equipped with the photovoltaic board, the photovoltaic board inserts the power supply line.
Furthermore, the side of box is equipped with commercial power, firewood and sends out, load, exchanges debugging quick interface and direct current rifle that charges, commercial power, firewood send out, load, exchange debugging quick interface and direct current rifle that charges all insert the power supply line.
Further, the rated power of the power grid simulator is 100kVA, and the model is ACS-100 KT.
Compared with the prior art, the utility model has the following advantages:
in the scheme, for realizing the experiment of the plug-and-play physical interface equipment, a plug-and-play interface cabinet is arranged on the alternating current side of the plug-and-play physical interface equipment, so that switching and charging and discharging control under different operation modes are realized; a plurality of energy storage systems are arranged on the direct current side of the battery pack, and the energy storage systems comprise lead-acid batteries, lithium iron batteries and super capacitors, so that comprehensive experiments of the plurality of energy storage systems are realized; set up electric wire netting simulator one side and link to each other with the electric wire netting, the opposite side links to each other with 50kVA polymorphic type loads, links to each other with plug-and-play physics interface device AC side through plug-and-play interface cabinet simultaneously, can simulate the fluctuation of grid voltage, frequency to verify under the different operational environment plug-and-play physics interface device to the supporting role of electric wire netting, can satisfy the experimental demand to the multiple operating mode of plug-and-play physics interface device and environment on the whole.
Drawings
Fig. 1 is a schematic structural diagram of an application experiment system of a plug-and-play physical interface device provided in an embodiment of the present invention;
in the figure, 1, a power grid, 2, a switch cabinet, 3, a power grid simulator, 4, a plug-and-play interface cabinet, 5, a plug-and-play physical interface device, 6, a mobile energy storage box, 7, various loads, 8, a lead-acid battery pack, 9, a lithium iron battery pack, 10, a super capacitor pack, 11, a monitoring signal cabinet, 12 and a controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Example 1
As shown in fig. 1, this embodiment provides an application experiment system of a plug-and-play physical interface device, which is used for testing a plug-and-play physical interface device 5, and includes a power grid 1, a switch cabinet 2, a power grid simulator 3, a plug-and-play interface cabinet 4, a mobile energy storage box 6, a multi-type load 7 and an energy storage system, one side of the power grid simulator 3 is connected to the power grid 1 through the switch cabinet 2, the other side is connected to the multi-type load 7, and is also connected to an ac side of the plug-and-play physical interface device 5 through the plug-and-play interface cabinet 4, a dc side of the plug-and-play physical interface device 5 is connected to the energy storage system, and the mobile energy storage box 6 is connected to the power grid simulator 3;
the energy storage system comprises a lead-acid battery pack 8, a lithium iron battery pack 9 and a super capacitor pack 10, the number of the plug-and-play physical interface devices 5 is multiple, and the plug-and-play physical interface devices 5 are connected to the lead-acid battery pack 8, the lithium iron battery pack 9 and the super capacitor pack 10 in a one-to-one correspondence mode.
As a preferred embodiment, the application experiment system further includes a monitoring signal cabinet 11 and a controller 12, wherein the monitoring signal cabinet 11 is respectively connected to the plug-and-play physical interface device 5, the lead-acid battery pack 8, the lithium iron battery pack 9 and the supercapacitor pack 10 in a communication manner.
In the scheme, in order to realize the experiment of the plug-and-play physical interface equipment 5, a plug-and-play interface cabinet 4 is arranged on the alternating current side of the plug-and-play physical interface equipment, so that the switching and charging and discharging control under different operation modes are realized; arranging various energy storage systems including a lead-acid battery, a lithium iron battery and a super capacitor on the direct current side of the system, and realizing comprehensive experiments of the various energy storage systems; set up 3 one sides of electric wire netting simulator and link to each other with electric wire netting 1, the opposite side links to each other with 50kVA multi-type load 7, link to each other with plug-and-play physics interface device 5 AC side through plug-and-play interface cabinet 4 simultaneously, can simulate electric wire netting 1 voltage, the fluctuation of frequency to verify under the different operational environment plug-and-play physics interface device 5 to the supporting role of electric wire netting 1, can satisfy the experimental demand to 5 kinds of operating modes of plug-and-play physics interface device and environment on the whole.
The intelligent power grid simulator specifically comprises two sets of 50kW and one set of 100kW plug-and-play physical interface equipment 5, a 100kWh lead-acid battery pack 8, a 50kW multiplied by 40s super capacitor bank 10, a 69kWh lithium iron battery pack 9, a 100kW/200kWh mobile energy storage system, a 50kW multi-type load 7, a 100kW power grid simulator 3, a switch cabinet 2 and related monitoring and protecting equipment.
The components are described in detail below.
1. Plug-and-play interface cabinet 4
One side of the plug-and-play interface cabinet 4 is connected with the power grid 1, the other side is provided with three alternating current ports which are respectively connected with three plug-and-play physical interface devices 5, and the interface form of the plug-and-play interface cabinet refers to an alternating current charging pile and comprises an electric and communication loop for realizing the plug-and-play of the plug-and-play physical interface devices 5 in physical connection.
2. Energy storage system
2.1 lead-acid Battery pack 8
The lead-acid battery has the nominal capacity of 114.8kWh, the nominal voltage of 574V and the charge-discharge multiplying power of 0.5C.
2.2 lithium iron battery pack 9
The nominal capacity of the lithium iron battery is 69.12kWh, the nominal voltage is 691.2V, and the highest charge-discharge multiplying power is 1C.
2.3 supercapacitor group 10
The nominal energy of the super capacitor is 50 kW.40 s, the nominal capacity is 25.7F, and the working voltage range is 282V-480V.
3. Mobile energy storage box 6
The box type mobile energy storage is provided with 1 set of standard 20-foot containers, 220kWh lithium iron phosphate battery pack 9, an automatic fire extinguishing fire-fighting cabinet, 100kWPCS, a monitoring cabinet, a DCDC direct current cabinet, a load cabinet, a hydraulic operation cabinet, lighting, an air conditioner and other equipment are arranged in the box, 12 photovoltaic panels are arranged on the top, the left side and the right side of the box, and a commercial power, a diesel generator, a load, an alternating current debugging quick interface and a 30kW direct current charging gun are arranged on the right side of the box.
4. Monitoring signal cabinet 11
The intelligent power distribution terminal can be installed near the controlled primary equipment, various functions such as protection, information acquisition, fault detection and remote control command execution are realized on the spot, and advanced functions such as embedded web, remote maintenance and information debugging based on WIFI are supported.
The basic structure of the monitoring signal cabinet 11 may include a first processing unit and a second processing unit, the first processing unit includes an ARM processor and a DSP digital signal processor that are connected to each other, the second processor includes an FPGA chip, the ARM processor is respectively and communicatively connected to an ethernet interface and a serial interface, the FPGA chip is respectively connected to an ADC module, a general IO extension module and an output array module, and the FPGA chip is further connected to the DSP digital signal processor.
The ARM processor is responsible for management and Ethernet and serial port data communication, and the DSP digital signal processor is responsible for data sampling processing, namely, the single ARM processor is responsible for total starting, and only the action of a total starting element can open the positive power supply of the outlet relay, so that the damage of any device can not cause protection misoperation; the FPGA chip is responsible for ADC sampling, general IO expansion and data output;
meanwhile, the general IO expansion module and the serial interface can be connected with IO signals, so that key IO signals such as trip outlets and the like can be directly driven by IO, and non-key IO signals can be realized by serial communication; the redundant high-speed serial data transmission ensures the real-time property and the reliability of data, and can be well compatible with the multi-channel analog quantity synchronous sampling and the unification of a digital sampling interface.
5. Power grid simulator 3
One side of a 100kVA power grid simulator 3 is connected with a power grid 1, the other side of the 100kVA power grid simulator is connected with a 50kVA multi-type load 7, and meanwhile, the 100kVA power grid simulator is connected with the alternating current side of a plug-and-play physical interface device 5 through a plug-and-play interface cabinet 4, so that the fluctuation of the voltage and the frequency of the power grid 1 can be simulated, and the supporting effect of the plug-and-play physical interface device 5 on the power grid 1 under different operating environments is verified.
6. Plug and play physical interface device 5
The direct current side of the plug-and-play physical interface equipment 5 with 50kW and 100kW is connected with a battery, and the alternating current side is connected with the plug-and-play interface cabinet, so that the plug-and-play physical interface equipment is mainly used for realizing charge and discharge control in different operation modes, realizing switching and smooth connection/disconnection of energy storage in different operation modes, and realizing self-adaptive identification with BMS communication.
Plug and play physical interface equipment 5's basic structure includes direct current side unit and interchange side unit, direct current side unit passes through the IGBT module and connects interchange side unit, direct current side unit is including all connecting the direct current side power on the direct current side generating line, the direct current fuse, direct current EMI wave filter, direct current contactor and direct current bus-bar electric capacity, interchange side unit is including all connecting the interchange lightning protection ware on interchange side generating line, alternating current contactor, interchange EMI wave filter, interchange circuit breaker and LC filter reactor, interchange circuit breaker still is connected with interface module.
The alternating current lightning protection device and the LC filter reactor are connected with an alternating current side bus through an alternating current fuse. An alternating current breaker is further arranged in a connecting line of the alternating current breaker and the interface assembly.
The direct current side power supply, the direct current fuse, the direct current EMI filter and the direct current contactor are connected in sequence, and the alternating current lightning protector, the alternating current contactor, the alternating current EMI filter, the alternating current circuit breaker and the LC filter reactor are connected in sequence.
The plug-and-play physical interface device 5 further comprises a main control board, and the main control board is respectively connected with the direct current EMI filter, the direct current contactor, the alternating current contactor and the alternating current EMI filter.
The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a plug-and-play physics interface device's application experiment system for test plug-and-play physics interface device (5), a serial communication port, including electric wire netting (1), cubical switchboard (2), electric wire netting simulator (3), plug-and-play interface cabinet (4), remove energy storage box (6), polymorphic type load (7) and energy storage system, one side of electric wire netting simulator (3) is passed through cubical switchboard (2) and is connected electric wire netting (1), the opposite side is connected polymorphic type load (7), still connects the interchange side of plug-and-play physics interface device (5) through plug-and-play interface cabinet (4) simultaneously, the direct current side of plug-and-play physics interface device (5) is connected energy storage system, remove energy storage box (6) and connect electric wire netting simulator (3).
2. The application experiment system of plug-and-play physical interface equipment according to claim 1, wherein the energy storage system comprises a lead-acid battery pack (8), a lithium iron battery pack (9) and a super capacitor bank (10), the number of the plug-and-play physical interface equipment (5) is multiple, and the plug-and-play physical interface equipment (5) is connected to the lead-acid battery pack (8), the lithium iron battery pack (9) and the super capacitor bank (10) in a one-to-one correspondence manner.
3. The application experiment system of plug-and-play physical interface equipment according to claim 2, further comprising a monitoring signal cabinet (11) and a controller (12), wherein the monitoring signal cabinet (11) is respectively in communication connection with the plug-and-play physical interface equipment (5), the lead-acid battery pack (8), the lithium iron battery pack (9) and the super capacitor pack (10).
4. The application experiment system of plug-and-play physical interface device according to claim 2, characterized in that the plug-and-play physical interface device (5) has a nominal active power of 50kw or 100 kw.
5. The application experiment system of the plug-and-play physical interface device according to claim 2, wherein one side of the plug-and-play interface cabinet (4) is provided with a power grid interface, and the other side thereof is provided with three AC ports, and three plug-and-play physical interface devices (5) are respectively connected through the three AC ports.
6. The application experiment system of the plug-and-play physical interface device according to claim 2, wherein the lead-acid battery pack has a nominal capacity of 114.8kWh, a nominal voltage of 574V, and a charge-discharge rate of 0.5C;
the nominal capacity of the lithium iron battery pack is 69.12kWh, the nominal voltage is 691.2V, and the highest charge-discharge multiplying power is 1C;
the nominal energy of the super capacitor bank is 50 kW.40 s, the nominal capacity is 25.7F, and the working voltage range is 282V-480V.
7. The application experiment system of the plug-and-play physical interface device according to claim 2, wherein the mobile energy storage box (6) comprises a box body and a lithium iron phosphate battery pack, an automatic fire extinguishing fire-fighting cabinet, a 100kWPCS, a monitoring cabinet, a DCDC direct current cabinet, a load cabinet, a hydraulic operation cabinet, a lighting device and an air conditioner which are arranged in the box body, and the lithium iron phosphate battery pack, the automatic fire extinguishing fire-fighting cabinet, the 100kWPCS, the monitoring cabinet, the DCDC direct current cabinet, the load cabinet, the hydraulic operation cabinet, the lighting device and the air conditioner are all connected to the same power supply line.
8. The plug-and-play physical interface device application experiment system of claim 7, wherein photovoltaic panels are arranged on the top and left and right sides of the box body, and the photovoltaic panels are connected to the power supply line.
9. The application experiment system of the plug-and-play physical interface device as claimed in claim 7, wherein the side of the box body is provided with a commercial power, a diesel generator, a load, an ac debugging quick interface and a dc charging gun, and the commercial power, the diesel generator, the load, the ac debugging quick interface and the dc charging gun are all connected to the power supply line.
10. The plug-and-play physical interface device application experiment system of claim 2, wherein the power grid simulator (3) has a rated power of 100kVA and a model of ACS-100 KT.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122895752.7U CN216959411U (en) | 2021-11-24 | 2021-11-24 | Application experiment system of plug-and-play physical interface equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122895752.7U CN216959411U (en) | 2021-11-24 | 2021-11-24 | Application experiment system of plug-and-play physical interface equipment |
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| CN216959411U true CN216959411U (en) | 2022-07-12 |
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| CN202122895752.7U Active CN216959411U (en) | 2021-11-24 | 2021-11-24 | Application experiment system of plug-and-play physical interface equipment |
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