Power balance system based on distributed power generation system

Abstract

The invention discloses a power balance system based on a distributed power generation system. In the power balance system based on the distributed power generation system, at least one super capacitor module stores energy based on instantaneous peak power response, and at least one rotary mechanical energy storage module stores energy based on continuous high-power response. The rotating machinery energy storage module is connected with the super capacitor module in parallel, one end of the control system is connected with a distributed power generation system, a public power supply network and a user load system, the other end of the control system is connected with the energy storage module, and the monitoring unit monitors the power generation power PX of the distributed power supply, the power supply power PD of the public power supply network and the load power PF of the user load system in real time. The control unit is connected with the monitoring unit and the energy storage module, and the control unit adjusts the power generation power PK of the energy storage module based on the power generation power PX of the distributed power generation system, the power supply power PD of the public power supply network and the load power PF of the user load system, power generation is performed in the forward direction, and energy storage is performed in the reverse direction.

Description

technical field [0001] The invention belongs to the technical field of distributed photovoltaic power generation, in particular to a power balance system based on a distributed power generation system. Background technique [0002] Distributed power generation, especially distributed photovoltaic power generation, has developed rapidly on the user side, and most of them have adopted the business model of "spontaneous self-use and surplus power connected to the grid", which has brought obvious economic benefits to users. [0003] However, the existing technology is still relatively extensive. While maximizing the use of user resources to develop distributed power generation capabilities, the matching problem between distributed power generation and user energy consumption has been ignored, and the model of "surplus electricity connected to the grid and balance grid compensation" has been chosen. , so that the structure of the distributed generation system is as simple as poss...

AI Technical Summary

Problems solved by technology

Due to the uncontrollable characteristics of distributed power generation, the power generation capacity presents the characteristics of intermittent and rapid changes, and the user's power load is also constantly changing rapidly with its power demand. The matching degree between the electricity load demand is very low

When the installed capacity of distributed power generation is large and the user load has obvious mutation characteristics, this contradiction is more prominent, which greatly affects the economics of distributed power generation systems.

[0004] In order to solve this problem, the existing technologies try to use electrochemical energy storage, flywheel energy storage and other technologies to serve as solutions for electric energy balancers, but all of them have high cost, high maintenance cost, short life span, and difficulty in performance guarantee, etc. problem, not getting promoted app

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