Control method of distributed grid-connected photovoltaic power generation devices and energy storage devices

A photovoltaic power generation equipment and distributed photovoltaic technology, which is applied in the control field of distributed photovoltaic grid-connected power generation and energy storage equipment, can solve the problem that there is no big difference between daytime and nighttime, and achieve the effect of effective configuration and improved economy.

Active Publication Date: 2013-06-26
SEARI ELECTRIC TECH
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Problems solved by technology

[0004] The 200910243411.2 patent application is for wind power. Compared with photovoltaic equipment, there are the following differences: wind power is a 24-hour ...

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Embodiment Construction

[0033] The present invention proposes a control method for distributed photovoltaic grid-connected power generation and energy storage equipment. The applicable environment of the method is as follows: several user terminals are connected to an electric energy monitor through a distributed network, and each user terminal includes photovoltaic power generation equipment and energy storage device. In one embodiment, several user terminals are connected to the electric energy monitor through a CAN bus to form a distributed network. Several client terminals and power monitors work in a multi-master mode, and each client terminal and power monitor uses the same system time. Each user end and electric energy monitor has a unique message identifier ID, and the data sent by each user end and electric energy monitor includes its own message identifier ID. Each client and power monitor work with a unified baud rate. Each client and power monitor broadcasts and listens to data on the d...

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Abstract

The invention discloses a control method of distributed grid-connected photovoltaic power generation devices and energy storage devices. A plurality of clients are connected with an electric energy monitor through a distributed network, each client comprises the photovoltaic power generation device and the energy storage device. The control method includes: by the electrical energy monitor, building communication with each client to form a distributed communication system, and setting uniform system time; selecting a day mode or a night mode according to the system time; in the day mode, by the energy storage devices, compensating generated power of the photovoltaic power generation devices according to on and off states of the photovoltaic power generation devices and energy storage states of the energy storage devices; and in the night mode, charging the energy storage devices according to the energy storage states of the energy storage devices and electricity price periods.

Description

technical field [0001] The invention relates to smart grid equipment, and more specifically, to a control method for distributed photovoltaic grid-connected power generation and energy storage equipment. Background technique [0002] With the rapid development of the smart grid, a large number of distributed photovoltaic power generation equipment and other renewable energy grid-connected power generation equipment are connected to the user end. Disadvantages of fluctuating with light intensity. Therefore, controlling the smoothness and stability of the power connected to the grid at the user end and reducing the disturbance of intermittent photovoltaic energy to the grid is a new problem faced by the smart grid user end at present. [0003] The application number is 200910243411.2, and the Chinese patent application entitled "A Monitoring System for Energy Storage Devices for Smoothing Wind Power Output Power" discloses a monitoring system for energy storage devices for sm...

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Application Information

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IPC IPC(8): H02J3/38H02J3/28
CPCY02B10/10Y02E10/56Y02E70/30
Inventor 柴熠张扬夏伟冯异潘益勇徐晟阳
Owner SEARI ELECTRIC TECH
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