Complex grid-connected system suitable for interconnection of multiple source storage load units and control method

A source-storage and complex technology, applied in the control field of the interconnection and grid connection of multi-source load-storage units, can solve the problem that energy interaction between multiple source-storage units cannot be realized, multiple power channels cannot work at the same time, system reliability and economy. Disadvantages and other problems, to achieve the effect of good system reliability, high reliability and good economy

CN112865066AActive Publication Date: 2021-05-28SHANGHAI JIAO TONG UNIV
6 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2021-05-28

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a complex grid-connected system suitable for interconnection of a plurality of source storage load units and a control method. The system comprises a plurality of source storage load units, a plurality of grid-connected controllers and a common bus; each source storage load unit adopts a three-domain control architecture; each source storage load unit and the corresponding grid-connected controller form a source storage load unit micro-grid system; the source storage load unit micro-grid systems are mutually independent and perform energy interaction through the common bus. The method comprises the following steps of: firstly, dividing five control domains through bus voltage error amplification signals MEA generated in the source storage load units; and then determining the working modes of the source storage load units and the grid-connected controllers according to each control domain. According to the complex grid-connected system suitable for interconnection of the multiple source storage load units and the control method of the invention, expansion is carried out based on the three-domain control architecture; the system andcontrol method can be well compatible with an existing space power supply controller PCU;and plug and play can be realized; interconnection and grid connection of the plurality of source storage load units are realized only through the common bus and the grid connection controllers, and extra communication lines or control lines do not need to be erected.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a control strategy for simple and reliable interconnection of multiple direct current microgrid systems, in particular to a control method for interconnection and grid connection of multi-source storage load units (Source Storage Load Units) based on five-domain control. Background technique

[0002] The space power system is a complex source-storage system including photovoltaic arrays, energy storage and loads. Sequential Switching Shunt Regulator (S3R), as one of the bus voltage regulation methods of the space power controller, has a modular design, With the advantages of good dynamic response and strong stability, it is the main architecture of space power controllers at home and abroad. However, with the development of the aerospace industry, a single spacecraft can no longer meet the needs of extraterrestrial exploration, and it is necessary to combine multiple space power supplies to form a space power supply sys...

Examples

Embodiment Construction

[0053] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, which all belong to the protection scope of the present invention. For parts not described below, reference may be made to the description in the Summary of the Invention or the prior art.

[0054] figure 1 It is a schematic diagram of a complex grid-connected system applicable to the interconnection of multiple source-storage units in Embodiment 1 of the present invention. refer to figure 1 As shown, the complex grid-connected system suitable for the interconnection of multiple source-storage-load units consists of three parts: source-storage-load unit (SSLU), gr...