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High-speed collaborative distributed energy storage control system

A technology of distributed energy storage and control system, applied in the field of distributed energy storage control system, can solve the problems of poor controllability, waste of energy storage resources, distributed energy storage access and output distributed layout, etc., so as to improve the decentralization. and poor controllability, the effect of improving controllability

Pending Publication Date: 2022-05-13
许昌云能魔方储能技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are still some problems in the distributed energy storage system. Compared with the traditional operation mode of the large power grid, the distributed energy storage access and output have the characteristics of decentralized layout and poor controllability.
From the perspective of grid dispatching, the lack of effective dispatching means is not conducive to distributed energy storage to play its role in improving the frequency, voltage and power quality of the grid, and will cause a large waste of energy storage resources

Method used

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  • High-speed collaborative distributed energy storage control system
  • High-speed collaborative distributed energy storage control system
  • High-speed collaborative distributed energy storage control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 1 and figure 2 , including distributed energy storage equipment, information collection unit, cooperative control host and centralized control, characterized in that: distributed energy storage equipment, information collection unit, cooperative control host and centralized control, and form an optical fiber ring network and Ethernet communication network , Distributed energy storage equipment and cluster control system can jointly constitute a high-speed coordinated distributed energy storage operation control method, distributed energy storage system control strategy, the functions that can be realized include but are not limited to primary frequency modulation, peak shaving and valley filling, overload prevention, Anti-backflow and three-phase imbalance control strategies, the proposed high-speed collaborative distributed energy storage control system can solve the problem of real-time control of distributed energy storage, and adopt cluster and distribut...

Embodiment 2

[0030] see image 3 and Figure 4The coordinating control host includes a coordinating slave control unit, which collects the power control information of the grid-connected point and uploads it to the co-control host through the optical fiber ring network. After receiving the information, the control host quickly sends the information to each distributed energy storage through EtherCAT technology. The distributed energy storage equipment mainly collects the information of grid connection points, PCS, BMS and other dynamic environment information, and communicates with the centralized control and cooperative control hosts. For communication, RS485, CAN and other communication methods can be selected for distributed energy storage to communicate with PCS, BMS and grid-connected acquisition equipment, and Ethernet communication with centralized control, and modbus TCP or 104 can be selected for communication protocols, etc. EtherCAT communication, real-time data transmission, c...

Embodiment 3

[0032] see Figure 5 and Figure 6 , the distributed control method of high-speed coordination is: based on the information of the integrated network connection point (distribution information), the information of the cluster control itself (distributed energy storage system equipment), the decentralized operation of distributed energy storage can be realized; based on the coordinated control host ( EtherCAT), cluster control unit (distributed energy storage equipment) and centralized control unit (centralized control) can realize the centralized operation of distributed energy storage, and the two kinds of control rights can be intelligently converted, which not only meets the control requirements of the power distribution side, but also Meet the multi-objective optimization requirements of the control requirements of a single access point of a distributed energy storage system, thereby realizing multi-objective optimization of distributed energy storage, high-speed coordinat...

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Abstract

The invention discloses a high-speed collaborative distributed energy storage control system, which comprises distributed energy storage equipment, an information acquisition unit, a coordinated control host and a centralized controller, and is characterized in that the distributed energy storage equipment, the information acquisition unit, the coordinated control host and the centralized controller form an optical fiber ring network and an Ethernet communication network. According to the high-speed cooperative distributed energy storage control system, the advantages of the EtherCAT communication transmission technology are fully combined, the problem of real-time control of distributed energy storage is well solved, and meanwhile, a cluster and distributed cooperative control strategy is adopted; a plurality of distributed energy storage devices construct a distributed energy storage cooperative control system which is high in flexibility, high in controllability and short in response time through the distributed energy storage cooperative control system, and the distributed energy storage cooperative control system can be extended to other application scenes such as optical storage charging stations, court energy storage and distributed photovoltaic application scenes. And a solution thought is provided for cooperative control of a plurality of different types of distributed energy storage.

Description

technical field [0001] The invention relates to the technical field of energy storage control systems, in particular to a high-speed coordinated distributed energy storage control system. Background technique [0002] In recent years, with the continuous improvement of the economics of energy storage technology, the role of energy storage in the construction of renewable energy power generation, smart grid, and energy Internet has become increasingly prominent. my country has also issued policies to encourage the construction and application of energy storage technology. According to different input methods and application scenarios, the application of energy storage system mainly includes two forms: centralized and distributed. The energy storage system for centralized application is generally connected at the same grid connection point. At present, in large-scale renewable energy generation and This form is mainly used in the grid, grid auxiliary services, etc. It has the ch...

Claims

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Application Information

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IPC IPC(8): H02J3/32H02J3/26H02J3/24H02J13/00
CPCH02J3/32H02J3/26H02J3/241H02J13/00016H02J13/00017H02J13/00028H02J2203/20
Inventor 陈世锋张建兴马帅丁辉
Owner 许昌云能魔方储能技术有限公司
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