Monitoring device for micro-grid system capable of automatically realizing energy balance

Abstract

The invention relates to a monitoring device for a micro-grid system capable of automatically realizing energy balance. The monitoring device comprises a wind power generation equipment monitoring module, a photovoltaic power generation equipment monitoring module, an energy storage device monitoring module, a large-scale power grid communication module, a grid-connected operation monitoring module, a load monitoring module, a central control module and a bus module, wherein the wind power generation equipment monitoring module is used for monitoring wind power generation equipment in real time and forecasting generation power of the wind power generation equipment; the photovoltaic power generation equipment monitoring module is used for monitoring photovoltaic power generation equipment in real time and forecasting generation power of the photovoltaic power generation equipment; the energy storage device monitoring module can monitor an SOC of a storage battery module, capacitance and voltage values of a super capacitor and a DC / DC bidirectional transducer in real time; the large-scale power grid communication module is used for acquiring an operation condition and related scheduling information of a large-scale power grid from a large-scale power grid regulation and control center in real time; the grid-connected operation monitoring module is used for controlling a micro-grid to be connected with or isolated from the large-scale power grid; the load monitoring module is used for monitoring loads in an energy storage power station in real time; the center control module is used for determining an operation strategy of the micro-grid and sending a command to each module in the monitoring device so as to execute the operation strategy; the bus module is used for communication of each module of the monitoring device.

Description

Technical field [0001] The invention relates to a monitoring device 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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