CN112838619B - Energy storage converter parallel operation system and method based on high-speed serial optical fiber - Google Patents
Energy storage converter parallel operation system and method based on high-speed serial optical fiber Download PDFInfo
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- CN112838619B CN112838619B CN202011622429.6A CN202011622429A CN112838619B CN 112838619 B CN112838619 B CN 112838619B CN 202011622429 A CN202011622429 A CN 202011622429A CN 112838619 B CN112838619 B CN 112838619B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
- H02J13/00017—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus using optical fiber
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model provides an energy storage converter parallel operation system and method based on high-speed serial optical fiber, which at least comprises a communication optical fiber, a battery module and at least two PCS devices with independent control modules; each PCS device is connected with the same bus, the optical fiber communication modules of each PCS device are sequentially connected in series through communication optical fibers to form a ring network, any PCS device on the ring network is set into a host through parameters, the rest PCS devices are slave devices, and each PCS device is supplied with power through an independent battery module; all PCS (personal communications System) equipment disclosed by the invention have the same structure, equipment communication modules are connected in series through serial optical fibers to form a ring network, any PCS equipment can be set as a host in a parameter setting mode, other PCS equipment is set as a slave, an additional independent controller is not needed, and the whole system has a simple structure and is convenient to connect; meanwhile, due to the fact that a serial communication mode is used, the number of optical fiber seats and the number of optical fibers used are reduced, and cost is reduced.
Description
Technical Field
The disclosure relates to the technical field of power electronics, in particular to a parallel operation system and method of an energy storage converter based on a high-speed serial optical fiber.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the development of power electronic technology, the energy storage converters are applied more and more, the larger the energy storage capacity required on site is, the more the energy storage converters are required, and how to realize the parallel operation of a plurality of energy storage converters is a problem to be solved by all energy storage converter manufacturers.
The inventor finds that, a researcher provides a master-slave control system and a master-slave control method for parallel operation of the PCS, the system uses an independent power distribution unit to distribute power, calculates the instruction current of each energy storage PCS by obtaining information such as a scheduling power instruction, battery pack voltage, SOC and the like, and then sends the instruction current to each energy storage PCS, and because the independent power distribution unit is used, parallel transmission is adopted when the independent power distribution unit is communicated with the energy storage PCS units, and the cost of optical fiber interfaces and optical fiber materials is increased by using optical fiber communication.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides an energy storage converter parallel operation system and method based on high-speed serial optical fibers, all PCS (Power System) equipment have the same structure, equipment communication modules are connected in series through the serial optical fibers to form a ring network, any PCS equipment can be set as a host in a parameter setting mode, other PCS equipment is set as a slave, an additional independent controller is not needed, and the whole system is simple in structure and convenient to connect; meanwhile, due to the fact that a serial communication mode is used, the number of optical fiber seats and the number of optical fibers used are reduced, and cost is reduced.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
the first aspect of the disclosure provides an energy storage converter parallel operation system based on a high-speed serial optical fiber.
An energy storage converter parallel operation system based on high-speed serial optical fibers at least comprises communication optical fibers, a battery module and at least two PCS (personal communications systems) devices with independent control modules;
each PCS device is connected with the same bus, the optical fiber communication modules of the PCS devices are sequentially connected in series through communication optical fibers to form a ring network, any PCS device on the ring network is set into a host through parameters, the rest PCS devices are slave devices, and each PCS device is supplied with power through an independent battery module.
As some possible implementations, the optical fiber communication module includes an optical fiber transmitting interface and an optical fiber receiving interface, and the optical fiber transmitting interface of each PCS device is connected to the optical fiber receiving interface of another PCS device through a communication optical fiber.
As some possible implementations, the battery module communicates with the control module of the PCS device through the CAN communication module of the PCS device, and is configured to transmit the operation state data of the battery to the control module of the PCS device.
As some possible implementation manners, the PCS device further includes a protection module, the single PCS device is automatically stopped after protection, if the PCS slave device fails, the whole system normally operates, and if the PCS master device fails, the remaining PCS slave devices are set as the PCS master device, and then the whole system normally operates.
As some possible implementation manners, the PCS device further includes a power grid voltage signal detection module, and the PCS device detects a power grid phase through the power grid voltage signal detection module to implement grid-connected operation.
As possible realization modes, the system also comprises a current transformer, wherein the current transformer is placed on the power grid side, and signals on the secondary side of the current transformer are sequentially connected in series to each PCS device for reactive power compensation and power factor control.
The second aspect of the disclosure provides an energy storage converter parallel operation method based on a high-speed serial optical fiber.
An energy storage converter parallel operation method based on high-speed serial optical fibers utilizes a parallel operation system of the first aspect of the disclosure, and comprises the following steps:
setting one PCS device as a host, setting the rest PCS devices as slave machines, and after the host issues a starting-up instruction, if no PCS device reaches rated output, performing power coefficient distribution according to the SOC state of the PCS device;
the PCS master machine calculates command current according to the collected power grid voltage and current signals, generates command current and transmits the command current, start-stop and reset commands to the PCS slave machine through communication optical fibers;
the host and the slave generate currents according to the instruction currents and respective power coefficients, and meanwhile, each PCS device transmits rated power information of the device to other devices periodically through communication optical fibers;
and adjusting the power distribution coefficient in real time according to the running state of the PCS equipment.
As some possible implementations, the power coefficient allocation includes:
wherein, K i Distribution coefficient, SOC, for device i i Is the SOC value, P, of device i i Is the power rating of the device i and,
the sum of the product of each device SOC and the rated power.
As a further limitation, when a plant is in a shutdown or fault state, its corresponding P i Is 0.
By way of further limitation, if the allocated devices reach rated power, the power coefficient allocation comprises:
wherein, P i Is the power rating of the device i,
is the sum of the power ratings of all PCS devices.
Compared with the prior art, the beneficial effect of this disclosure is:
1. according to the system and the method, all PCS (personal communications System) equipment have the same structure, the equipment communication modules are connected in series through serial optical fibers to form a ring network, any PCS equipment can be set as a host machine in a parameter setting mode, other PCS equipment is set as a slave machine, an additional independent controller is not needed, and the whole system is simple in structure and convenient to connect.
2. The system and the method have simple structure, and simultaneously reduce the use of the optical fiber seat and the optical fiber and reduce the cost due to the serial communication mode.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to be construed as limiting the disclosure.
Fig. 1 is a schematic structural diagram of an energy storage converter parallel operation system of a high-speed serial optical fiber according to embodiment 1 of the present disclosure.
Fig. 2 is a schematic diagram illustrating connection of internal modules of a PCS device according to embodiment 1 of the present disclosure.
Detailed Description
The present disclosure is further described with reference to the following drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.
Example 1:
as shown in fig. 1, an embodiment 1 of the present disclosure provides a PCS parallel operation system of a high-speed serial optical fiber, including:
the system comprises a load, a bus, a current transformer, a PCS (personal communications system) host, a PCS slave 1, a PCS slave 2, a PCS slave 3, a communication optical fiber and a battery module;
the PCS master machine is the same as the PCS slave machine 1, the PCS slave machine 2 and the PCS slave machine 3 in compensation capacity, and the initial SOC information is 60%,50%,40% and 30% respectively.
The load, the PCS master machine, the PCS slave machine 1, the PCS slave machine 2 and the PCS slave machine 3 are connected to the same bus through cables, and secondary signals of the network side current sensor are sequentially connected with PCS equipment in series;
the optical fiber transmitting interface of the PCS master communication module is connected with the optical fiber receiving interface of the PCS slave 1 through communication optical fibers, the optical fiber transmitting interface of the PCS slave 1 is connected with the optical fiber receiving interface of the PCS slave 2, the optical fiber transmitting interface of the PCS slave 2 is connected with the optical fiber receiving interface of the PCS slave 3, the optical fiber transmitting interface of the PCS slave 3 is connected with the optical fiber receiving interface of the PCS master, and therefore a ring network is formed.
It can be understood that in some other embodiments, the number of the PCS slaves may also be other numbers, as long as the ring network is formed according to the method described in this embodiment, and a person skilled in the art may select and design the PCS slaves according to a specific working condition, which is not described herein again.
The battery module of each device is connected with the direct current side of the PCS device, and each battery module is connected with the PCS control module through CAN communication and is mainly used for transmitting information of the SOC, the SOH, the temperature and the like of the battery.
As shown in fig. 2, the PCS device has an internal structure, and mainly includes a main control module (i.e., a control module), an optical fiber communication module, a voltage acquisition module, a current acquisition module, a protection module, and a CAN communication module.
The master control module mainly processes signals, the slave machine mainly controls output current according to command current transmitted by the host machine, and the host machine controls the output current and also needs to calculate the command current;
the voltage acquisition module is mainly used for acquiring voltage signals of grid-connected points and is used for synchronization of PCS equipment in grid connection;
the current acquisition module is mainly used for acquiring the output current of the PCS equipment and controlling the PCS to output the current;
the optical fiber communication module is mainly used for transmitting harmonic instruction current signals, and the master and slave machines are used for controlling output current according to the signals; the protection module is mainly used for protecting the PCS equipment and automatically stopping after detecting the protection;
the CAN communication module is mainly used for acquiring information such as SOC and SOH of the battery.
Example 2:
the embodiment 2 of the present disclosure provides a PCS parallel operation method of a high-speed serial optical fiber, and the parallel operation system according to the embodiment 1 includes the following steps:
step 1: the PCS master machine is set to be in a master machine mode, the PCS slave machine 1, the PCS slave machine 2 and the PCS slave machine 3 are set to be in a slave machine mode, and when all equipment is normally started and does not reach the rated power, the power distribution coefficient of each equipment is 33%, 28%, 22% and 17%;
when all the equipment is normally started and one of the equipment reaches rated power, the power distribution coefficient of each equipment is 25%, 25% and 25%;
when the PCS slave machine 2 is shut down due to faults, other equipment is started to operate normally, and no equipment reaches the rated power, the power distribution coefficient of each equipment is 46%, 0%, 31% and 23%;
when one of the devices reaches the rated power, the power distribution coefficient of each device is 33%, 0%, 33% and 33%.
Specifically, the power coefficient distribution formula is as follows:
wherein, K i Distribution coefficient, SOC, for device i i Is the SOC value, P, of the device i i Is the power rating of the device i and,
for each device SOC and rated power product, its corresponding P when the device is in a shutdown or fault state i Is 0;
if some devices reach rated power after being distributed, the coefficient distribution formula is as follows:
wherein, P i Is the power rating of the device i and,
is the sum of the power ratings of all PCS devices.
Step 2: the PCS master machine calculates command current according to the collected power grid voltage and current signals and generates command current, and transmits the commands of the command current, the start-up and shut-down, the reset and the like to other slave machines through communication optical fibers;
and 3, step 3: the host and the slave generate currents according to the command currents and respective coefficients, and meanwhile, each device transmits rated power information of the device to other devices periodically through communication optical fibers;
and 4, step 4: and (3) adjusting the power distribution coefficient in real time according to the running state of the equipment and the calculation formula in the step 1.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (7)
1. The utility model provides an energy storage converter parallel operation system based on high-speed serial optic fibre which characterized in that:
at least comprises the following steps: the device comprises a communication optical fiber, a battery module and at least two PCS (personal communications systems) devices with independent control modules;
each PCS device is connected with the same bus, the optical fiber communication modules of each PCS device are sequentially connected in series through communication optical fibers to form a ring network, any PCS device on the ring network is set into a host through parameters, the rest PCS devices are slave devices, and each PCS device is supplied with power through an independent battery module;
setting one PCS device as a host, setting the rest PCS devices as slave machines, and after the host issues a starting-up instruction, if no PCS device reaches rated output, performing power coefficient distribution according to the SOC state of the PCS device;
the PCS master machine calculates command current according to the collected power grid voltage and current signals, generates command current and transmits the command current, start-stop and reset commands to the PCS slave machine through communication optical fibers;
the host and the slave generate currents according to the instruction currents and respective power coefficients, and meanwhile, each PCS device transmits rated power information of the device to other devices periodically through communication optical fibers;
adjusting the power distribution coefficient in real time according to the running state of the PCS equipment;
power coefficient allocation, comprising:
where Ki is the distribution coefficient of device i,
is the SOC value of the device i, pi is the rated power of the device i,
the sum of the product of each equipment SOC and rated power;
and if the allocated equipment reaches the rated power, allocating the power coefficient, including:
wherein Pi is the rated power of the device i,
is the sum of the power ratings of all PCS devices.
2. The high speed serial fiber based energy storage converter parallel operating system of claim 1, wherein:
the optical fiber communication module comprises an optical fiber transmitting interface and an optical fiber receiving interface, and the optical fiber transmitting interface of each PCS equipment is connected with the optical fiber receiving interface of another PCS equipment through communication optical fibers.
3. The high speed serial fiber based energy storage converter parallel operation system of claim 1, wherein:
the battery module is communicated with the control module of the PCS equipment through the CAN communication module of the PCS equipment and used for transmitting the running state data of the battery to the control module of the PCS equipment.
4. The high speed serial fiber based energy storage converter parallel operating system of claim 1, wherein:
the PCS equipment also comprises a protection module, the single PCS equipment is automatically stopped after being protected, if the PCS slave equipment fails, the whole system normally operates, and if the PCS master equipment fails, the rest PCS slave equipment is set as the PCS master equipment and then the whole system normally operates.
5. The high speed serial fiber based energy storage converter parallel operating system of claim 1, wherein:
the PCS device also comprises a power grid voltage signal detection module, and the PCS device detects the phase of a power grid through the power grid voltage signal detection module to realize grid-connected operation.
6. The high speed serial fiber based energy storage converter parallel operating system of claim 1, wherein:
the power grid voltage regulator further comprises a current transformer, wherein the current transformer is placed on the power grid side, and signals on the secondary side of the current transformer are sequentially connected in series to each PCS device for reactive compensation and power factor control.
7. The high speed serial fiber based energy storage converter parallel operating system of claim 1, wherein:
when the equipment is in a shutdown or fault state
Is 0./>
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| CN106229996B (en) * | 2016-08-16 | 2019-01-22 | 株洲变流技术国家工程研究中心有限公司 | A kind of system and its control method for realizing the operation of SVG device multi-machine parallel connection |
| CN109462236B (en) * | 2019-01-11 | 2022-10-04 | 新风光电子科技股份有限公司 | APF parallel operation system and method based on high-speed serial optical fiber |
| CN110601238A (en) * | 2019-08-09 | 2019-12-20 | 南京因泰莱电器股份有限公司 | Intelligent micro-grid peak regulation controller of energy storage system |
| CN111342487A (en) * | 2020-02-28 | 2020-06-26 | 国充充电科技江苏股份有限公司 | Parallel control method and system of energy storage converter and electronic equipment |
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| CN102280891A (en) * | 2011-07-28 | 2011-12-14 | 思源清能电气电子有限公司 | Static var generator (SVG) device parallel running control system and method based on optical fiber high speed communication |
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