Monitoring method of micro-grid system capable of automatically realizing energy balance

Abstract

The invention provides a monitoring method of a micro-grid system capable of automatically realizing energy balance. The monitoring method comprises the steps of S1, acquiring operation data of a wind-powered generating device and a photovoltaic generating device through a wind-powered generating device module and a photovoltaic generating device module on real time, and storing the data; S2, predicating output power of the wind-powered generating device and the photovoltaic generating device within the preset time in the future according to the operation data of the wind-powered generating device and the photovoltaic generating device; S3, detecting to obtain SOC of a storage batter module and capacitance voltage values of a super capacitor on real time, and acquiring the load power demand condition in a micro-grid on real time; S4, acquiring large grid parameters and scheduling information on real time, and predicating the power demand of a connecting point between the micro-grid and the large grid in the future; S5, optimally operating the micro-grid by using the power demand of the connecting point between an energy storing station and the large power grid, the current energy SOC of the storage battery and the capacitance voltage of the super capacitor, the current load power demand in the power grid, and the output power of the wind-powered generating device and the photovoltaic generating device in the future as the constraining conditions.

Description

Technical field [0001] The invention relates to a monitoring method of a micro-grid system capable of automatically realizing energy balance. Background technique [0002] Micro-grid (Micro-Grid), also translated as micro-grid, is a new type of network structure. It is a system unit composed of a group of micro-power sources, loads, energy storage devices and control devices. It can realize an autonomous system of self-control, protection and management. , it can run in parallel with the external power grid or run in isolation. [0003] As a supplement to the ultra-high voltage, long-distance, and large-grid power supply mode, the micro-grid based on wind power and photovoltaic power generation represents a new development direction of the power system. Wind energy and solar energy resources are clean and renewable energy, but there are problems of randomness and volatility, which bring a series of impacts to the power grid. The degree of power fluctuation directly affects...

AI Technical Summary

Problems solved by technology

The traditional method is to use a single battery energy storage element to stabilize the system power, but due to the impact of frequent charging and discharging on the life of the battery pack and the single energy storage element often cannot meet the needs of rapid and automatic balance of system power

[0005] In addition, the price of large-scale energy storage devices is relatively expensive. Therefore, it is necessary to comprehensively consider the cost of transmission projects, the cost of energy storage devices, the revenue of power transmission, and the revenue of energy storage devices. Method for Optimal Configuration of Energy Storage Devices at Time-of-Capacity

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