A monitoring device for a microgrid with an energy storage system capable of stabilizing power fluctuations

Abstract

The invention relates to a monitoring device for a micro-grid with an energy storage system capable of stabilizing power fluctuation. The monitoring device 11 comprises a photovoltaic power generation equipment monitoring module 114, an energy storage system monitoring module 115, a large-scale power grid communication module 112, a grid-connected monitoring module 116, a central control module 117, a wind power generation equipment monitoring module 113, a load monitoring module 118 and a bus module 111, wherein the photovoltaic power generation equipment monitoring module 114 is used for monitoring photovoltaic power generation equipment 12 in the micro-grid 10 in real time and forecasting generation power of the photovoltaic power generation equipment 12; the energy storage system monitoring module 115 is used for monitoring a storage battery module 131 and a DC / DC bidirectional transducer 132 in the energy storage system 131 in real time; the large-scale power grid communication module 112 is used for acquiring the operating condition of a large-scale power grid 20 and related scheduling information from a regulation and control center of the large-scale power grid 20 in real time; the grid-connected monitoring module 116 is used for controlling the micro-grid 10 to be connected with or isolated from the large-scale power grid 20; the central control module 117 is used for determining an operation strategy of the micro-grid 10 and sending a command to each module to execute the operation strategy; the wind power generation equipment monitoring module 113 is used for monitoring a SVG module 14 in real time; the load monitoring module 118 is used for monitoring loads 17 in the micro-grid 10 in real time; the bus module 111 is used for communication of each module of the monitoring device 11.

Description

[0001] Technical field [0002] The invention relates to a monitoring device for a microgrid with an energy storage system capable of stabilizing power fluctuations. Background technique [0003] 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 systems 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. [0004] 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 fluctu...

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Problems solved by technology

[0006] However, the large-scale energy storage system currently configured is relatively expensive. Therefore, it is necessary to comprehensively consider the cost of transmission engineering, the cost of energy storage system, the revenue of power transmission, and the revenue of energy storage system. Method for optimal configuration of energy storage system at capacity

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