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Communication protocol switching method and system

A communication protocol and switching system technology, applied in the field of communication protocol switching methods and systems, can solve problems such as the compatibility mechanism of complex communication protocols, and achieve the effects of ensuring reliability, reducing complexity and reducing costs

Active Publication Date: 2022-07-12
SUNGROW POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a communication protocol switching method and system to solve the problem that an additional detection device needs to be installed or a complex communication protocol compatibility mechanism needs to be set when the system switches between multiple communication protocols

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Embodiment Construction

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] In this application, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a list of elements includes not only those elements, but also no Other elements expressly listed, or which are also inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the p...

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Abstract

The present invention provides a communication protocol switching method, which is applied to a main control module of a photovoltaic grid-connected system. The method includes: judging whether a communication protocol switching requirement is received; if a communication protocol switching requirement is received, controlling itself and being managed by itself respectively The next-level control module, switches the current communication mode to the target communication mode in the communication protocol switching requirement; judges whether the communication modes of itself and the next-level control module are successfully switched to the target communication mode; if so, enable the communication with the target The communication protocol corresponding to the communication mode, only when it is judged that both itself and the next-level control module are successfully switched to the target communication mode, the communication protocol corresponding to the target communication mode will be enabled, so there will be no mismatch between the communication mode and the communication protocol. In this case, the reliability of system communication is ensured, and there is no need to install additional detection devices and set up complex communication protocol compatibility mechanisms.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a communication protocol switching method and system. Background technique [0002] With the development of the power grid, the connection forms of the converters in the photovoltaic grid-connected system are also diversified. Existing photovoltaic grid-connected systems with cascaded multilevel converters, such as figure 1 shown. Specifically, by increasing the number of power units in the photovoltaic grid-connected system, high-voltage and high-power output can be realized based on low-voltage devices, and through an appropriate modulation control strategy, multi-level output can be realized, reducing the volume and cost of the filter device in the system. In order to properly control the working state of each power unit to achieve better output performance of the photovoltaic grid-connected system, it is usually necessary to use communication to manage the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L69/18H04L69/08
CPCH04L69/18H04L69/08Y02E10/56
Inventor 崔雨晴庄园王新宇庄加才徐君
Owner SUNGROW POWER SUPPLY CO LTD
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