Energy management method of photovoltaic energy storage inverter
An energy storage inverter and energy management technology, applied in photovoltaic modules, photovoltaic power generation, collectors, etc., can solve problems affecting grid stability, grid impact, and low photovoltaic economic benefits, so as to increase revenue and solve stability problem effect
Active Publication Date: 2017-03-01
GOODWE TECHNOLOGIES CO LTD
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Problems solved by technology
The energy of pure grid-connected inverters can only be transmitted to the grid, and energy storage and intelligent management cannot be realized. When the grid load is low, it will have an impact on the grid and affect the stability of the grid. The economic benefits of photovoltaic applications in areas with time-of-use electricity prices lower
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Embodiment 1
[0018] Embodiment 1: A photovoltaic power generation system includes a battery, a load, and a bidirectional energy storage inverter, wherein the bidirectional energy storage inverter controls the operation of the battery. An energy management method of a photovoltaic energy storage inverter for managing the working state of the above photovoltaic power generation system is realized by a bidirectional energy storage inverter, which enables the photovoltaic power generation system to have a self-generation and self-use working mode and a time-sharing control mode.
[0019] 1. Spontaneous self-use working mode
[0020] See attached figure 1 As shown, in the self-consumption mode, the power parameter P of the load is detected in real time through the smart meter connected to the load M , the smart meter is connected to the bidirectional energy storage inverter for phase signals, and the power parameter P of the load collected by the smart meter M Pass it to the bidirectional ene...
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The invention relates to a photovoltaic energy storage inverter energy management method which is realized by a bidirectional energy storage inverter and enables a photovoltaic power generation system to have a self-generating self-using working mode and a time-sharing control mode. Under the self-generating self-using working mode, a power parameter of a load is detected in real time and is transmitted to the bidirectional energy storage inverter, and the bidirectional energy storage inverter determines the work stat and state parameters of a battery according to the power parameter of the load. Under the time-sharing control mode, a control instruction is input into the bidirectional energy storage inverter, the control instruction comprises time interval information and power data information, and the bidirectional energy storage inverter control the work state of the battery according to the control instruction. By adopting the method provided by the invention, photovoltaic energy controllable management is realized, the defects that the energy of a common grid-connected inverter can only be conveyed to a power grid or can only be consumed by a local load, and the residual energy is wasted is overcome, and the problem that the stability of the power grid is influenced by a photovoltaic power generation peak is solved, and the profit of the system is improved to the largest extend simultaneously.
Description
technical field [0001] The invention relates to the field of photovoltaic power generation, in particular to a method for managing battery energy by a photovoltaic inverter. Background technique [0002] At present, photovoltaic power generation grid-connected inverters are more common, and the main application of photovoltaic energy storage inverters is mainly off-grid. The energy of pure grid-connected inverters can only be transmitted to the grid, and energy storage and intelligent management cannot be realized. When the grid load is low, it will have an impact on the grid and affect the stability of the grid. The economic benefits of photovoltaic applications in areas with time-of-use electricity prices lower. Contents of the invention [0003] The purpose of the present invention is to provide an energy management method for a photovoltaic energy storage inverter that intelligently manages a photovoltaic power generation system, avoids its impact on the power grid, a...
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IPC IPC(8): H02J7/00H02J3/38H01M10/44H02S40/38
CPCH02J3/32Y02E10/56Y02E70/30
Inventor 黄敏方刚徐卫军
Owner GOODWE TECHNOLOGIES CO LTD