A distributed new energy power microgrid system with piconet structure

Abstract

The invention belongs to the technical field of new-energy electrical power and specifically relates to a distributed new-energy electric-power microgrid system with a piconet structure. In the technical scheme, a main-node electrical-power system, a deputy-node electrical-power system and a piconet subsystem are mainly combined to form the distributed new-energy electric-power microgrid system with the piconet structure so that it is realized that power generation systems (units) are used in close binding with a load and power is used immediately after being generated so that the electrical power is consumed and saved nearby. Through an electrical-power electronic device, electrical-power adjustment and control and energy and quality management and control and security protection are performed. The power generation units and a battery energy storage unit are combined to perform electrical-power balancing so as to overcome intermittence and instability of the new-energy electrical power. The plurality of power generation units are capable of generating power spontaneously and achieving complete autonomy of power supplying. Moreover, the power generation units are capable of being connected mutually with a network and a controlled connected grid and also capable of sharing so that overall-power reasonable adjustment and control for power generation and power consumption are realized and adjustment and deployment of a plurality of electrical powers are optimized. Thus new-energy electrical power is used preferentially and at the same time, resource sharing between the controlled connected grid and the subsystem is realized. Because distributed power generation and power supplying are realized really, system risks are effectively prevented and reliability and security of the microgrid system are improved significantly.

Description

technical field [0001] The invention belongs to the technical field of new energy electric power, and in particular relates to a distributed new energy electric power microgrid system with a piconet structure. Background technique [0002] In recent years, new energy power has been valued and supported by governments of various countries, and its application has become more and more extensive. After years of research and application practice, the industry has unanimously confirmed that new energy power systems such as photovoltaics and wind power are gradually becoming mature and widely known, and gradually forming emerging energy and power markets; Electricity belongs to distributed renewable energy, which spreads all over nature and is easy to adopt, but its energy density is relatively low. High-power electric power generation requires a suitable site, and the electric power is unstable, which is an intermittent power source. Distributed microgrid mode is the technical d...

AI Technical Summary

Problems solved by technology

[0007] However, the new energy distributed micro-grid currently on the market, its existing technology and system implementation methods are mainly distributed power generation and centralized power supply, which is the miniaturization of the large power grid. The advantages cannot be fully utilized, and there are obvious defects; such as: increased investment in high-voltage power transformation, power transmission and secondary power transformation; Difficulty and difficulty of power storage management; and system risk cannot be resolved due to concentration

Images