Solar off-grid and grid-connected control method for hybrid solar and commercial power supply

A control method and mains control technology, applied in battery circuit devices, renewable energy integration, photovoltaic power generation, etc., can solve problems such as being unable to be suitable for various users, and achieve the effects of ensuring stable power supply, reducing impact, and low implementation costs
CN104538985AInactive Publication Date: 2015-04-22JA YANGZHOU SOLAR PHOTOVOLTAIC ENG
6 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
JA YANGZHOU SOLAR PHOTOVOLTAIC ENG
Publication Date
2015-04-22
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention relates to a solar off-grid and grid-connected control method for hybrid solar and commercial power supply. The control method is implemented based on a solar off-grid and grid-connected system. The state of a solar grid-connected inverter, the state of a two-way grid-connected inverter, the state of a diesel generator, and the state of a commercial power source are acquired and judged, and then, the working modes of the solar grid-connected inverter, the diesel generator, the two-way grid-connected inverter, and a commercial power source control switch are coordinated. Intelligent control on hybrid solar and commercial power supply is realized, solar power generation, power generation by the diesel generator and power supply through energy storage of a battery are managed and coordinated in a unified way, and the stability and reliability of hybrid solar and commercial power supply are improved in an overall manner. Moreover, the method of the invention can be implemented by sophisticated hardware products, has the advantages of wide application range and low cost of implementation, and overcomes the drawbacks in the prior art such as fixed specifications and poor adaptability.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a solar off-grid control method for hybrid power supply of solar energy and city electricity. Background technique

[0002] With the progress and development of society, people's demand for electricity continues to increase. At present, there are still many areas in a state where the mains power supply is not comprehensive, and short-term or long-term power outages often occur. The use of new energy is a supplement to the mains power, especially with the continuous improvement and promotion of solar power generation technology, the photovoltaic system needs to have two functions of off-grid and grid-connected operation at the same time. Most of the products on the market have fixed specifications and cannot meet the different needs of various users. The key to system control is how to effectively utilize mature products and do a good job in unified control and management to meet various system requirements. Contents of the ...

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