Distributed energy multi-mode control system based on assemblies and control method thereof

Abstract

The invention discloses a distributed energy multi-mode control system based on assemblies and a control method thereof. The control system comprises a man-machine interface unit, an energy device module, a mode sensing module, a mode switching strategy module, and a mode optimizing scheduling module. The devices of the distributed energy system can be divided into assemblies according to areas or functions, and the assemblies are defined to be basic elements, the control hardware network of the distributed energy system having the multi-mode characteristics can be established by adopting the control information interaction between the assemblies and the reconstruction of the assembly functions. The synergetic mode switching control algorithm of the mode switching can be provided based on the determination of the communication way between the assemblies and the supply of the mode mapping, mode switching transmission protocols for the assemblies, and then the hierarchical statuses of the assemblies and the response ways of the command switching can be determined, and therefore the assemblies can be used to form the ordered structure required by the mode switching spontaneously. The balance between the mode smooth switching and the shortening of the mode switching time can be achieved by adopting the mode optimizing scheduling, and combining with the smoothness index of the mode switching.

Description

technical field [0001] The invention belongs to the technical field of distributed energy operation control, and in particular relates to a component-based distributed energy multi-mode control system and a control method thereof. Background technique [0002] There are many control challenges in distributed energy systems. From the perspective of control theory and technology, these difficulties are often attributed to the inherent characteristics of the controlled object, such as time delay, nonlinearity, parameter perturbation, and limited communication. In recent years, research on one or some of the above characteristics has been very active, and simulation and experimental test results can also verify the effectiveness of these research results. However, in the actual production process, the application of new theories and methods in the field of control is not satisfactory. The reason is that, on the one hand, the implementation cost of complex theories and methods,...

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Problems solved by technology

For example, in the wind-solar hybrid power generation system mentioned above, the random changes of wind energy P (supply side), solar energy W (supply side) and load B (demand side) just reflect the existence of this double randomness. It is also difficult for load forecasting to provide sufficient support for the smoothness and rapidity of the mode transition process

[0006] Multimodal process control is a global control problem at the system level. Traditional control strategies (PID control, adaptive control, robust control, etc.) are often difficult to meet the control requirements. The reasons can be summarized as follows: (1) The traditional control strategy uses Most of the mathematical models are established based on the intrinsic characteristics of the object. Such models are usually established in the form of lumped parameters, which cannot effectively perceive and express the transformation of the operating mode of the system; (2) The design of traditional control strategies is usually aimed at the dynamic and static performance of local objects. Rather than the stability and rapidity of system mode transformation, more emphasis is placed on the rapid elimination of deviations, rather than the adjustment of control timing; (3) each key device (main controlled object) itself is passively adaptive to the mode transformation However, there is a lack of necessary information interaction between the devices, and poor collaboration and self-organization capabilities

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