Photovoltaic inverter grid-connected control method, terminal and storage medium
A photovoltaic inverter and control method technology, applied in photovoltaic power generation, control/regulation systems, instruments, etc., can solve problems such as poor grid-connected performance of photovoltaic inverters, achieve strong engineering application value, improve stability, Avoid the effect of disconnection
Pending Publication Date: 2021-11-30
STATE GRID HEBEI ELECTRIC POWER RES INST +3
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The embodiment of the present invention provides a photovoltaic inverter grid-connected control method, a terminal and a storage medium, which are used to solve the problem of poor grid-connected performance of photovoltaic inverters in the prior art
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0054] In the following description, specific details such as specific system structures and techniques are presented for illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0055] In order to make the purpose, technical solution and advantages of the present invention more clear, the following will describe through specific implementation manners in conjunction with the accompanying drawings.
[0056] In view of the problems that the maximum power tracking technology may cause the grid-connected point voltage to exceed the limit and power fluctuations, a grid-connected active support p...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to the field of photovoltaic technology, in particular to a photovoltaic inverter grid-connected control method, a terminal and a storage medium. The method comprises the steps of obtaining photovoltaic output data, an active power target value, a grid connection parameter and a direct-current target voltage value; determining the duty ratio of a boost circuit according to the photovoltaic output data and the active power target value; and determining the duty ratio of the inverter circuit according to the grid connection parameter and the direct-current target voltage value. According to the implementation mode of the photovoltaic inverter grid-connected control method, the photovoltaic output power can track the superior instruction power more quickly. The photovoltaic response speed can be greatly improved during constant power tracking control operation of the photovoltaic inverter in the grid-connected state, the risk that the photovoltaic inverter is disconnected from the grid due to the fact that the voltage of the grid-connected point is out of limit is avoided, the stability of the power grid is improved, and the method has high engineering application value.
Description
technical field [0001] The present invention relates to the field of photovoltaic technology, and in particular to a photovoltaic inverter grid-connected control method, a terminal and a storage medium. Background technique [0002] Energy shortage and environmental pollution have become severe problems faced by countries all over the world. Renewable energy sources such as photovoltaics and wind power have been widely used due to their green, clean and renewable advantages. Among them, solar energy, as a major renewable energy source, is widely used in distributed photovoltaic grid-connected power generation. [0003] Photovoltaic power generation has the typical randomness, intermittent and volatility characteristics of new energy, and usually outputs the maximum power through maximum power tracking technology. When the external environment changes, it will cause fluctuations in the output power of photovoltaics, and even change the power flow distribution of the distribu...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H02J3/38H02M3/156H02M7/5387H02M1/12
CPCH02J3/381H02M3/156H02M7/53871H02M1/126H02J2300/26H02J2203/20Y02E10/56
Inventor 梁纪峰罗蓬李铁成曾四鸣夏彦卫周文王振雄易皓赵宇皓
Owner STATE GRID HEBEI ELECTRIC POWER RES INST