Optical storage-type multi-micro-network system comprising series and parallel structures

Abstract

The invention provides an optical storage-type multi-micro-network system comprising series and parallel structures. The optical storage-type multi-micro-network system comprises a primary system and a secondary system, wherein the primary system comprises a power distribution network, a multi-micro-network bus and at least three sub-micro-networks, wherein each sub-micro-network comprises a photovoltaic power generation system, an energy storage system and load equipment; the secondary system is a control system; the control system comprises a regional central controller and a regional integrated terminal; at least three sub-micro-networks comprise a series sub-micro-network and at least two parallel sub-micro-networks; in the series sub-micro-network, the photovoltaic power generation system, the energy storage system and the load equipment are connected with the multi-micro-network bus through breakers and contactors; the multi-micro-network bus is connected with the power distribution network through the breakers and the contactors; each parallel sub-micro-network comprises a sub-micro-network bus; the photovoltaic power generation system, the energy storage system and the load equipment are connected with the sub-micro-network buses through the breakers and the contactors; and the sub-micro-networks are connected with the multi-micro-network bus through the breakers and the contactors.

Description

technical field [0001] The invention relates to an optical storage type multi-microgrid system with series and parallel structures. Background technique [0002] Distributed power generation is connected to the distribution network, which is conducive to the local decentralized utilization of new energy and improves the reliability of power supply for users. However, distributed power generation is intermittent and random, and its unstable power generation method brings considerable problems to the safe and stable operation of the power grid. As an effective way of using distributed power generation to connect to the power grid, the microgrid combines the power generation system, energy storage system, and load, and through the cooperation of related control devices, not only solves the large-scale access problem of distributed power generation systems, but also fully The advantages of the distributed power generation system have been brought into play, and many other benef...

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Problems solved by technology

[0004] Chinese patent application 201220002686.4 discloses a microgrid system for laboratories. The microgrid system only includes the primary system and does not involve the design of the secondary system. The microgrid system does not have perfect functions, and the microgrid system in the application is Single microgrid, not suitable for multi-microgrid key technology research

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