Island microgrid hierarchical control method considering communication data disturbance under CPS concept

A technology of communication data and hierarchical control, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems that the voltage value and frequency value of the microgrid system cannot reach the expected reference value, etc.

Active Publication Date: 2018-05-25
无锡享源信息科技有限公司
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Problems solved by technology

Simple droop control cannot achieve the expected reference

Method used

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  • Island microgrid hierarchical control method considering communication data disturbance under CPS concept
  • Island microgrid hierarchical control method considering communication data disturbance under CPS concept
  • Island microgrid hierarchical control method considering communication data disturbance under CPS concept

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing, content of the present invention is described in further detail:

[0023] According to the present invention, a hierarchical control method for an isolated island microgrid considering communication data disturbance under the concept of CPS, the specific content includes the following steps:

[0024] Step 1: First, the concept of CPS technology is explained, and the CPS technology is applied to the microgrid system to form a power CPS, and the hierarchical control structure of the microgrid is constructed. The hierarchical control structure includes the network layer and the physical layer.

[0025] CPS concept: Cyber-physical fusion system (CPS) is a combination of communication system and physical system. It is a complex system including computing, networking and physical entities. The large-scale engineering system of real-time function perception, dynamic control and information service is through organic integration ...

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Abstract

The invention discloses an island microgrid hierarchical control method considering communication data disturbance under CPS concept. The method is based on the CPS concept, and divides a hierarchicalcontrol structure into two layers, that is, a network layer and a physical layer, by utilizing a communication network in the micro grid. In the network layer, influence of a CDD on system control effect is analyzed, and a strategy of adopting a back-propagation neural network to finish data compensation and eliminate the influence of the CDD is proposed; and in the physical layer, P-omega/Q-U droop control is adopted as primary control of voltage and frequency of the microgrid, and meanwhile, communication data in the network layer and a consistency protocol with virtual leaders are utilizedto finish secondary control of DER output voltage and angular frequency, thereby ensuring that the voltage and angular frequency of the microgrid is reliably controlled.

Description

technical field [0001] The invention belongs to the field of smart grid control, and in particular relates to a layered control method for isolated island micro-grids considering communication data disturbance under the concept of cyber-physical fusion system (CPS). Background technique [0002] Cyber-Physical Systems (CPS) is a combination of communication systems and physical systems. It is a complex system that includes computing, communication networks, and physical entities. Its real-time monitoring function, dynamic control function and self-service information service function are realized through the organic integration and deep cooperation of 3C (control, computing, communication) technology. CPS is a key research object of next-generation engineering systems that realize the integration of computing, communication and control technologies. With the rapid development of embedded technology and communication technology, the concept of CPS is more and more widely us...

Claims

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Application Information

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IPC IPC(8): H02J3/38
CPCH02J3/38H02J3/388Y02A30/60
Inventor 杨秋霞袁冬梅张博支成
Owner 无锡享源信息科技有限公司
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