CN218124720U - Network architecture for quickly controlling energy storage power and energy storage communication system - Google Patents
Network architecture for quickly controlling energy storage power and energy storage communication system Download PDFInfo
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Abstract
The utility model discloses a network architecture and energy storage communication system of energy storage power quick control, first slave station controller through the bridge internal arrangement, second slave station controller and third slave station controller respectively with the master station controller, reserve master station controller and standard unit controller establish the communication connection, thereby form the network architecture of multicycle net, thereby realize assembling same etherCAT system with a plurality of master station controllers in the energy storage communication system, guarantee the security and the reliability of the energy storage communication system based on etherCAT system establishment, network architecture through multicycle net, realize the synchronous quick control of power of a plurality of power converters, the security and the reliability of system have further been improved.
Description
Technical Field
The utility model relates to an electrochemistry energy storage field, in particular to network architecture of energy storage power quick control and energy storage communication system based on etherCAT.
Background
With the continuous reduction of the cost of key devices in electrochemical energy storage, such as batteries and power converter sets and the continuous evolution of application technologies thereof, the large-scale application of the electrochemical energy storage technology participating in peak regulation, frequency regulation, peak clipping and valley filling on the power grid side is greatly promoted, and an energy storage power station project of dozens of megawatts to hundreds of megawatts is continuously put into operation.
Based on the characteristics of fast real-time response, good coordination and high precision of an EtherCAT (ethernet Control Automation Technology) system, a large-capacity energy storage communication system is established by people based on the EtherCAT system and used for improving the performance of a power grid.
However, due to the characteristics of the EtherCAT protocol in the EtherCAT system, a plurality of host controllers in the energy storage communication system cannot be converged into the same EtherCAT system, so that the safety and reliability of the existing energy storage communication system established based on the EtherCAT system are poor, and in the energy storage communication system of the hundred megawatt level or more, the safety and reliability are important consideration factors of the system.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a network architecture of energy storage power quick control and based on etherCAT's energy storage communication system, aim at solving because of the characteristic of etherCAT agreement in the etherCAT system, lead to there being the lower technical problem of security and reliability in the energy storage communication system based on etherCAT system establishes.
In order to achieve the above object, the present invention provides a network architecture for rapidly controlling energy storage power, wherein the network architecture for rapidly controlling energy storage power comprises a host controller, a standby host controller, a standard cell group controller and a bridge group;
the master station controller is in communication connection with a first slave station controller in the bridge group to form a first EtherCAT ring network;
the standby master station controller is in communication connection with a second slave station controller in the bridge group to form a second EtherCAT ring network;
and the standard unit controller is in communication connection with a third slave station controller in the bridge group to form a third EtherCAT ring network.
Optionally, the third EtherCAT ring network comprises a power converter group;
and the standard unit controller adopts an EtherCAT communication protocol through the connection of the bridge unit and the power converter unit, and is used for realizing the rapid transmission of data.
Optionally, the master controller uses an EtherCAT communication protocol for connection with the standard unit controller through the bridge group, and the standby master controller uses an EtherCAT communication protocol for connection with the standard unit controller through the bridge group.
Optionally, the network architecture for rapidly controlling the energy storage power includes multiple sets of communication data, where the multiple sets of communication data include a first data stream, a second data stream, a third data stream, a fourth data stream, and a fifth data stream;
the first data flow is hot standby redundant communication data between the main station controller and the standby main station controller;
the second data flow is communication data between the master station controller and the first slave station controller;
the third data flow is communication data between the standby master station controller and the second slave station controller;
the fourth data flow is communication data between the standard unit controller and the third slave station controller;
the fifth data stream is communication data between the third slave station controller and the power converter group.
Optionally, an FPGA chip is arranged in the bridge group;
the FPGA chip is respectively connected with the first slave station controller and the second slave station controller through parallel interfaces and used for arbitrating communication data in the first slave station controller and the second slave station controller so as to realize a data redundancy function between the FPGA chip and the master station controller or the standby master station controller;
the FPGA chip is connected with the third slave station controller through a parallel interface and used for sending communication data arbitrated by the FPGA chip in the first slave station controller and the second slave station controller to the third slave station controller.
Optionally, the network architecture for rapidly controlling the stored energy power further includes an energy management system group;
the energy management system group and the master station controller are communicated with each other through an IEC61850 mapping manufacturing message MMS;
the energy management system group and the standby main station controller are communicated with each other through an IEC61850 mapping manufacturing message MMS;
and the energy management system group and the standard unit controller are in MMS communication through IEC61850 mapping manufacturing messages.
Optionally, the network architecture for rapidly controlling the energy storage power further includes an in-situ monitoring system;
the local monitoring system is connected with the master station controller and the standby master station controller in series;
the local monitoring system is used for monitoring the operation state of the EtherCAT multi-ring network redundant energy storage power rapid control system through the main station controller and the standby main station controller which are connected in series, and ensuring that the EtherCAT multi-ring network redundant energy storage power rapid control system is in a good operation state through analysis of communication data in the main station controller and the standby main station controller.
Optionally, the network architecture for rapidly controlling the energy storage power further includes a battery pack;
the battery pack is also connected to the power converter pack.
Optionally, the network architecture for rapidly controlling the energy storage power is based on the first EtherCAT ring network, the second EtherCAT ring network, and the third EtherCAT ring network to form an EtherCAT communication system of a multi-ring network.
The embodiment also provides an energy storage communication system based on EtherCAT, which comprises the network architecture for quickly controlling the energy storage power, wherein the network architecture for quickly controlling the energy storage power comprises a master controller, a standby master controller, a standard unit controller and a network bridge group;
the master station controller is in communication connection with a first slave station controller in the bridge group to form a first EtherCAT ring network;
the standby master station controller is in communication connection with a second slave station controller in the bridge group to form a second EtherCAT ring network;
and the standard unit controller is in communication connection with a third slave station controller in the bridge group to form a third EtherCAT ring network.
The utility model discloses technical scheme is through the inside first slave station controller that is equipped with of bridge, second slave station controller and third slave station controller respectively with master station controller (master station controller), reserve master station controller and standard unit controller establish the communication and are connected, thereby form the network architecture of multicycle net, thereby realize assembling a plurality of master station controllers in the energy storage communication system to same EtherCAT system, guarantee the security and the reliability based on the energy storage communication system that the EtherCAT system established, network architecture through multicycle net, realize the power synchronization quick control of a plurality of power converters, the security and the reliability of system have further been improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of a network architecture for fast control of energy storage power according to the present invention;
fig. 2 is a schematic flow diagram of main data flows in the network architecture for fast control of energy storage power according to the present invention;
fig. 3 is a schematic diagram of the internal devices of a single group of bridges in the network architecture for fast control of energy storage power according to the present invention.
The realization, the functional characteristics and the feasible point of the utility model are further explained by referring to the attached drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, back, 8230; \8230;) are provided in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a network architecture of energy storage power rapid control.
In an embodiment of the present invention, as shown in fig. 1, the network architecture for fast controlling the energy storage power includes a master controller CCUA (Communication Control Unit a), a standby master controller CCUB (Communication Control Unit B), a Standard Unit controller ESGU (Electric Standard Generator Unit), and a bridge group;
the master station controller CCUA is in communication connection with a first slave station controller in the bridge group to form a first EtherCAT _ A (EtherCAT _ A) ring network; the standby master station controller CCUB is in communication connection with a second slave station controller in the bridge group to form a second EtherCAT _ B (namely EtherCAT _ B) ring network; and the standard unit controller ESGU is in communication connection with a third slave controller in the bridge group to form a third EtherCAT (namely EtherCAT _ C) ring network.
Further, the third EtherCAT (i.e., etherCAT _ C) ring network includes a Power converter group PCS (Power Conversion System);
and the standard unit controller ESGU adopts an EtherCAT communication protocol through the connection between the bridge unit and the power converter unit PCS, and is used for realizing the rapid transmission of data.
It should be noted in advance that, as can be seen from fig. 1, in this embodiment, there are 4 standard unit controllers ESGU, 4 bridges in the bridge group, and 4 power converter groups PCS in total, and each group has several power converters, so that there are 4 corresponding groups of third EtherCAT (i.e., etherCAT _ C) ring networks. In order to distinguish multiple ring network types, the dotted dashed line is a first EtherCAT _ a (i.e., etherCAT _ a) ring network, the long-segment dashed line is a second EtherCAT _ B (i.e., etherCAT _ B) ring network, and the short-segment dashed line is a third EtherCAT (i.e., etherCAT _ C) ring network.
The utility model discloses an innovation to the network bridge group for a plurality of controllers in the system, for example master controller CCUA, reserve master controller CCUB and standard unit controller ESGU in FIG. 1 can form the network architecture of polycyclic network through the network bridge group, like first EtherCAT _ A (be EtherCAT _ A) looped netowrk, second EtherCAT _ B (be EtherCAT _ B) looped netowrk and third EtherCAT (be EtherCAT _ C) looped netowrk, through the network architecture of polycyclic network, mutual interaction and data redundancy can be realized to communication data between a plurality of controllers in the system, and then solved current a plurality of master controllers that lead to because of the EtherCAT characteristic and can't assemble the problem in same system, improved the security and the reliability of the network architecture based on the establishment of EtherCAT system.
The third EtherCAT (i.e., etherCAT _ C) ring network further includes a power converter group PCS, and the power converter group PCS is configured to control a charging and discharging process of the battery according to the received communication data, so as to adjust active power and reactive power in the system.
Therefore, the utility model discloses in, network architecture and the EtherCAT system real-time response based on the polycyclic net are fast with the high characteristics of synchronism for power converter group PCS can receive the communication data that are used for controlling battery charge-discharge fast, and based on communication data to active power and reactive power's quick control and synchronization, further promote the security and the reliability based on the network architecture that the EtherCAT system was established.
Furthermore, the main station controller CCUA is connected with the standard station controller ESGU through the bridge group by an EtherCAT communication protocol, the standby main station controller CCUB is connected with the standard station controller ESGU through the bridge group by the EtherCAT communication protocol, the standard station controller ESGU established on the basis of multi-ring network is respectively connected with the main station controller CCUA and the standby main station controller CCUB by communication, interaction of communication data between the standard station controller ESGU and the main station controller CCUA and the standby main station controller CCUB can be realized, and the EtherCAT communication protocol adopted on the basis can improve the speed of the communication data (namely realize a rapid power scheduling instruction) to achieve the effect of rapid power control, wherein the effects comprise steady-state active power regulation, steady-state reactive power regulation, transient-state active power regulation, dynamic reactive power regulation and AGV/AVC regulation.
Specifically, as shown in fig. 2, the network architecture for rapidly controlling the energy storage power includes multiple sets of communication data, where the multiple sets of communication data include a first data stream, a second data stream, a third data stream, a fourth data stream, and a fifth data stream;
the first data flow is hot standby redundant communication data between the main station controller CCUA and the standby main station controller CCUB, two main station controllers of the main station controller CCUA and the standby main station controller CCUB are used for mutual backup and jointly execute the same service, and when one main station controller fails, the other main station controller can undertake a service task, so that the system can be automatically ensured to continuously provide service without manual intervention;
the second data flow is communication data between the master station controller CCUA and the first slave station controller, and the third data flow is communication data between the standby master station controller CCUB and the second slave station controller, because the master station controller CCUA and the standby master station controller CCUB are the same master station controller, because the communication data transmitted in the second data flow and the third data flow are the same, the two master station controllers transmit the communication data of the two data flows, and the problem of power control failure caused by communication data loss and further grid failure caused by failure of one master station controller is solved;
the fourth data stream is communication data between the standard set controller ESGU and the third slave controller, and the fifth data stream is communication data between the third slave controller and the power converter set PCS, where it should be noted that the fourth data stream is a data stream obtained by arbitrating the first data stream and the second data stream by the third slave controller in the bridge set, and after receiving the fourth data stream, the standard set controller ESGU processes the fourth data stream, converts the fourth data stream into the fifth data stream, and outputs the fifth data stream to the power converter set PCS, so that the power converter set PCS realizes fast control and synchronization of power based on the received fifth data stream.
Meanwhile, after the power converter group PCS completes the fast control and synchronization of the power, a completion instruction (i.e., a fifth data stream) is generated and returned to the bridge group through the standard group controller ESGU, so that the bridge group generates corresponding communication data (i.e., a second data stream or a third data stream) and returns to the master controller CCUA or the standby master controller CCUB.
Specifically, as shown in fig. 3, an FPGA (Field-Programmable Gate Array) chip is disposed in the bridge group;
it is known to provide an FPGA chip in a bridge.
The FPG chip A is connected with the third slave station controller through a parallel interface and is used for sending the communication data arbitrated by the FPGA chip in the first slave station controller and the second slave station controller to the third slave station controller.
The FPGA chip judges whether the master controller CCUA or the standby master controller CCUB is in a working state at the moment through the arbitration of the communication data of the master controller CCUA and the standby master controller CCUB received from the first slave controller and the second slave controller, if the master controller CCUA is in the working state at the moment, the communication data in the first slave controller is judged to be effective data, the communication data in the first slave controller is subjected to data redundancy, meanwhile, the communication data in the first slave controller is sent to the third slave controller for storage, the rapid control and synchronization of power can be conveniently realized by a subsequent power converter group PCS based on the effective data, and a finishing instruction is returned to the master controller CCUA based on the effective data.
As shown in fig. 3, a FLASH Memory (Coded FLASH Memory) chip is further disposed in the bridge group for avoiding the situation of communication data loss when the power grid loses power.
Specifically, as shown in fig. 1, the network architecture for rapidly controlling the Energy storage power further includes an Energy Management System (EMS);
in the present embodiment, the energy management system group EMS includes an EMS master a and an EMS master B.
The EMS host A in the energy management system group EMS and the host controller CCUA are communicated through IEC61850 mapping manufacturing message MMS (Microsoft Media Server protocol, streaming Media transmission protocol), and interaction of coordination information between the host controller CCUA and the energy management system group EMS is realized; EMS host B in the energy management system group EMS and the standby master controller CCUB are mapped through IEC61850 to make message MMS communication, and interaction of coordination information between the standby master controller CCUB and the energy management system group EMS is realized; and the EMS and the ESGU are communicated through IEC61850 mapping manufacturing messages MMS, so that all information uploading work in the PCS and command control work of the EMS are realized.
In this embodiment, if the source network load storage interactive terminal transmits the "control instruction of active power" to the energy management system group EMS through the serial port terminal, after the energy management system group EMS receives the control instruction, the energy management system group EMS sends message communication data containing the "control instruction of active power" to the master controller CCUA and the standby master controller CCUB through IEC61850 mapping and manufacturing message MMS communication, the master controller CCUA and the standby master controller CCUB send the message communication data to the first slave controller and the second slave controller in the bridge group through the first EtherCAT _ a (i.e., etherCAT _ a) ring network and the second EtherCAT _ B (i.e., etherCAT _ B) ring network respectively, arbitrate the message communication data in the first slave controller and the second slave controller through the FPGA chip, and performing data redundancy on message communication data sent by the master station controller CCUA in the working state, sending the message communication data to a standard set controller ESGU through a third slave station controller, analyzing the message communication data through the standard set controller ESGU, and sending the analyzed communication data to a power converter set PCS (power converter set), so that the power converter set PCS realizes the rapid control and synchronization of the active power of the battery according to the received 'control instruction of the active power', and simultaneously returning a finishing instruction of the 'control instruction of the active power' to an energy management system set EMS through the standard set controller ESGU, thereby realizing the control of the energy management system set EMS on the power converter set PCS and the return of the instruction after the control is finished.
It can be seen from fig. 1 that the source network load-store interactive terminal is further connected to the master controller CCUA and the standby master controller CCUB through the hard point a and the hard point B, respectively, and it should be noted that although an effect of quickly transmitting a control instruction to the master controller CCUA and the standby master controller CCUB can be achieved through the hard points, the effect may adversely affect an operation state of the entire network architecture, and therefore, after receiving the same control instruction from the energy management system group EMS, the master controller CCUA and the standby master controller CCUB may disconnect the connection with the source network load-store interactive terminal through the hard interface, thereby ensuring a good communication operation environment of the network architecture.
Further, the network architecture for rapidly controlling the energy storage power further comprises an in-situ monitoring system HMI;
the local monitoring system HMI is connected with the main station controller CCUA and the standby main station controller CCUB in series; the local monitoring system HMI is used for monitoring the operation state of the EtherCAT multi-ring network redundant energy storage power rapid control system through the main station controller CCUA and the standby main station controller CCUB which are connected in series, and ensuring that the EtherCAT multi-ring network redundant energy storage power rapid control system is in a good operation state through the analysis of communication data in the main station controller CCUA and the standby main station controller CCUB.
The grid-connected point PT/CT in fig. 1 is remotely connected to the master station controller CCUA and the standby master station controller CCUB, and is mainly used to send parameters such as the frequency of the power grid to the master station controller CCUA and the standby master station controller CCUB.
And the gateway, the server, the workstation and other devices are used for realizing the network functions of the network architecture, such as network interconnection, computing service and the like.
In an embodiment, the network architecture for fast control of energy storage power further includes a battery pack;
the battery pack is connected to the energy management system group EMS through the standard battery pack controller ESGU to form an MMS network, the battery pack is also connected to the power converter group PCS, and in the embodiment, power information in the battery pack can be sent to the energy management system group EMS through the power converter group PCS and the MMS network.
In an embodiment, the network architecture for rapidly controlling the energy storage power forms an EtherCAT communication system of a multi-ring network based on the first EtherCAT _ a (i.e., etherCAT _ a) ring network, the second EtherCAT _ B (i.e., etherCAT _ B) ring network, and the third EtherCAT (i.e., etherCAT _ C) ring network.
The embodiment also provides an energy storage communication system based on EtherCAT, which includes the network architecture for rapidly controlling the energy storage power, where the network architecture for rapidly controlling the energy storage power includes a master controller CCUA, a standby master controller CCUB, a standard cell controller ESGU, and a bridge group;
the master station controller CCUA is in communication connection with a first slave station controller in the bridge group to form a first EtherCAT _ A (namely EtherCAT _ A) ring network;
the standby master station controller CCUB is in communication connection with a second slave station controller in the bridge group to form a second EtherCAT _ B (namely EtherCAT _ B) ring network;
and the standard unit controller ESGU is in communication connection with a third slave controller in the bridge group to form a third EtherCAT (namely EtherCAT _ C) ring network.
The above is only the optional embodiment of the present invention, and not therefore the limit of the patent scope of the present invention, all of which are in the concept of the present invention, the equivalent structure transformation of the content of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (10)
1. A network architecture for rapidly controlling energy storage power is characterized in that the network architecture for rapidly controlling the energy storage power comprises a master station controller, a standby master station controller, a standard cell group controller and a bridge group;
the master station controller is in communication connection with a first slave station controller in the bridge group to form a first EtherCAT ring network;
the standby master station controller is in communication connection with a second slave station controller in the bridge group to form a second EtherCAT ring network;
and the standard unit controller is in communication connection with a third slave controller in the bridge group to form a third EtherCAT looped network.
2. The network architecture for rapid control of energy storage power according to claim 1, wherein the third EtherCAT ring network comprises a power converter bank;
and the standard unit controller adopts an EtherCAT communication protocol through the connection between the bridge unit and the power converter unit, and is used for realizing the rapid transmission of data.
3. The network architecture for rapid control of energy storage power as claimed in claim 2, wherein the connection between the master station controller and the standard cell group controller through the bridge group employs EtherCAT communication protocol, and the connection between the standby master station controller and the standard cell group controller through the bridge group employs EtherCAT communication protocol.
4. The network architecture for rapid control of energy storage power according to claim 3, wherein the network architecture for rapid control of energy storage power comprises a plurality of sets of communication data, the plurality of sets of communication data comprises a first data stream, a second data stream, a third data stream, a fourth data stream, and a fifth data stream;
the first data flow is hot standby redundant communication data between the main station controller and the standby main station controller;
the second data flow is communication data between the master station controller and the first slave station controller;
the third data flow is communication data between the standby master station controller and the second slave station controller;
the fourth data flow is communication data between the standard unit controller and the third slave unit controller;
the fifth data stream is communication data between the third slave station controller and the power converter group.
5. The network architecture for rapid control of stored energy power as claimed in claim 4, wherein an FPGA chip is provided in the bridge group;
the FPGA chip is respectively connected with the first slave station controller and the second slave station controller through parallel interfaces and used for arbitrating communication data in the first slave station controller and the second slave station controller so as to realize a data redundancy function between the FPGA chip and the master station controller or the standby master station controller;
the FPGA chip is connected with the third slave station controller through a parallel interface and used for sending communication data in the first slave station controller and the second slave station controller arbitrated by the FPGA chip to the third slave station controller.
6. The network architecture for rapid control of energy storage power according to claim 5, wherein the network architecture for rapid control of energy storage power further comprises a group of energy management systems;
the energy management system group and the master station controller are communicated with each other through an IEC61850 mapping manufacturing message MMS;
the energy management system group and the standby main station controller are communicated with each other through an IEC61850 mapping manufacturing message MMS;
and the energy management system group and the standard unit controller are in MMS communication through IEC61850 mapping manufacturing messages.
7. The network architecture for rapid energy storage power control according to claim 6, wherein the network architecture for rapid energy storage power control further comprises an in-situ monitoring system;
the local monitoring system is connected with the master station controller and the standby master station controller in series;
the local monitoring system is used for monitoring the operation state of the EtherCAT multi-ring network redundant energy storage power rapid control system through the main station controller and the standby main station controller which are connected in series, and ensuring that the EtherCAT multi-ring network redundant energy storage power rapid control system is in a good operation state through analysis of communication data in the main station controller and the standby main station controller.
8. The network architecture for rapid control of energy storage power according to claim 7, wherein the network architecture for rapid control of energy storage power further comprises a battery pack;
the battery pack is also connected to the power converter pack.
9. The network architecture for rapidly controlling energy storage power according to claim 8, wherein the network architecture for rapidly controlling energy storage power is based on an EtherCAT communication system in which the first EtherCAT ring network, the second EtherCAT ring network, and the third EtherCAT ring network form a multi-ring network.
10. An energy storage communication system based on EtherCAT, characterized in that, the energy storage communication system based on EtherCAT comprises the network architecture for energy storage power fast control according to any one of claims 1 to 9.
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| CN116192564A (en) * | 2023-05-04 | 2023-05-30 | 安徽中科智充新能源科技有限公司 | Quick control system of energy storage power station based on EtherCAT looped netowrk framework |
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| CN116192564A (en) * | 2023-05-04 | 2023-05-30 | 安徽中科智充新能源科技有限公司 | Quick control system of energy storage power station based on EtherCAT looped netowrk framework |
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