Intelligent center control type solar energy family roof grid-connected power generation system and operating method thereof

Abstract

The invention discloses an intelligent center control type solar energy family roof grid-connected power generation system and an operating method of the intelligent center control type solar energy family roof grid-connected power generation system. A roof photovoltaic module output end is connected with an inverter and sends photovoltaic energy to a power grid through a grid-connection switch and a bi-directional metering device. The intelligent center control type solar energy family roof grid-connected power generation system and the operating method of the intelligent center control type solar energy family roof grid-connected power generation system are characterized in that an intelligent measuring and controlling main machine and a security monitoring unit are arranged in the system, and a roof photovoltaic module, the inverter, the grid connected switch and the security monitoring unit are respectively connected with the intelligent measuring and controlling main machine and perform signal transmission and communication. The intelligent measuring and controlling main machine is connected with a monitoring system main station through a telecommunication network. The intelligent center control type solar energy family roof grid-connected power generation system and the operating method of the intelligent center control type solar energy family roof grid-connected power generation system can be operated in a grid-connection mode and a grid-separation mode so as to save family power consumption and also contribute to peak clipping and valley filling of a public power grid. Connection into the public power grid is achieved by interactive authentication control by operation staff through the monitoring system main station, and a grid-connection state of distributed power stations is ensured though the islet effect exists. The position of the grid-connection switch is confirmed through the security monitoring unit in a remote mode, and safety and states of the devices of the power stations are monitored. The intelligent center control type solar energy family roof grid-connected power generation system and the operating method of the intelligent center control type solar energy family roof grid-connected power generation system are easy to achieve and convenient to popularize.

Description

technical field [0001] The invention relates to a power generation system, in particular to an intelligent centrally controlled solar home roof grid-connected power generation system and its operating method, as well as the operation method of the grid-connected power generation system. Background technique [0002] There are mainly two ways of solar photovoltaic power generation, off-grid and grid-connected. Among them, off-grid solar photovoltaic power generation uses the electric energy generated by solar cells to directly supply electrical appliances, and can also use batteries for energy storage; grid-connected solar photovoltaic power generation converts the electric energy generated by solar cells, and then connects to the public grid to achieve grid connection. Used to generate electricity. [0003] Existing off-grid photovoltaic power generation systems generally have small capacity, simple structure, and low cost. The disadvantage is to ensure that sufficient powe...

AI Technical Summary

Problems solved by technology

[0006] The solar photovoltaic power station built on the roof of residents and units has the advantages of small scale, low cost, and overlap with the load point. It is a construction model supported by national policies. However, the current automatic island detection technology cannot achieve 100% reliability. If A large number of micro power stations are connected to the grid and run in parallel, which will cause huge grid instability and personal equipment safety problems due to the possible island effect, which will become a difficult problem in the operation and management of distributed micro grids

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