CN204836074U

CN204836074U - Photovoltaic power prediction unit based on MPPT

Info

Publication number: CN204836074U
Application number: CN201520548939.1U
Authority: CN
Inventors: 刘江宁; 徐强
Original assignee: JIANGSU BAIRUI AUTOMATION TECHNOLOGY Co Ltd
Current assignee: JIANGSU BAIRUI AUTOMATION TECHNOLOGY Co Ltd
Priority date: 2015-07-23
Filing date: 2015-07-23
Publication date: 2015-12-02
Anticipated expiration: 2025-07-23

Abstract

The utility model discloses a photovoltaic power prediction unit based on MPPT, including photovoltaic board, MPPT circuit, DSP treater and PC host computer, photovoltaic board and MPPT circuit connection, the MPPT circuit is connected with the DSP treater, DSP treater and PC upper computer connection, the photovoltaic board includes a plurality of veneers and a plurality of pairs of boards, and two board one end become 30 -150's angle connector, be provided with the MPPT system in the DSP treater. Through increasing the device, reduce the photovoltaic on the one hand effectively and inserted the influence to whole electric wire netting, improve power grid operation's security and stability, the degree of accuracy of its prediction improves, and on the other hand reduces electric power system's spinning reserve and running cost to make full use of solar energy resource, reduce cost is in order to obtain bigger economic benefits and social.

Description

A kind of photovoltaic power prediction unit based on MPPT

Technical field

The utility model relates to the prediction unit application of photovoltaic power, particularly a kind of photovoltaic power prediction unit based on MPPT.

Background technology

In recent years, distributed power generation energy supplying system is developed fast, because distributed power generation adopts new forms of energy on the spot, has a lot of advantages.To the utilization of new forms of energy, national governments all pay much attention to energy security and environmental problem, and the U.S., European Union all propose the year two thousand twenty using renewable energy sources and accounts for the ratio of total energy consumption more than 20%; China has also formulated the year two thousand twenty using renewable energy sources and has accounted for the target that the ratio of consuming total energy reaches 15%.

Solar energy, as a kind of novel green regenerative energy sources, utilizes maximum compared with other new forms of energy, is optimal regenerative resource.Particularly in recent decades, along with the continuous progress of science and technology, solar energy and related industry thereof become one of the fastest industry of world development.Because it has following feature: 1, reserves are huge: solar energy is inexhaustible regenerative resource; 2, cleanliness without any pollution, without the discharge of any material, both can not leave pollutant, noiseless, also can not to discharging waste gas in air; 3, reliability is high, and the life-span is long, and applied range.The cost of the renewable energy power generations such as photovoltaic is also far above conventional coal fired power generation, and China carries out preferential tax policies and gives certain subsidy photovoltaic generation, can improve the investment to photovoltaic generation, promote the development of new forms of energy.Photovoltaic generation and Small Civil photovoltaic plant are important development directions of Future New Energy Source, and the intermittence of new forms of energy is comparatively strong, and especially solar energy is subject to the impact of intensity of illumination and temperature, and stable photovoltaic power is the important performance indexes of electricity generation system.

The theoretical energy output of existing calculating photovoltaic array adopts the on-the-spot irradiation of irradiation instrument collection of photovoltaic to be multiplied with the conversion efficiency of photovoltaic array and photovoltaic array floor space and to obtain, its shortcoming: one is that irradiation instrument very flexible, sensitivity are not high, acquisition precision is low, and increase project cost; Two is go to estimate generated output according to irradiation intensity and temperature, and departed from photovoltaic module, calculate generated output with the theoretical model of a photovoltaic panel separately, accuracy is lower.

Utility model content

For solving Problems existing in above-mentioned background technology, the purpose of this utility model is to provide a kind of photovoltaic power prediction unit based on MPPT, to reach the object improving prediction accuracy and reduce costs.

For achieving the above object, the technical solution of the utility model is as follows:

Based on a photovoltaic power prediction unit of MPPT, comprise photovoltaic panel, MPPT circuit, dsp processor and PC host computer, described photovoltaic panel is connected with MPPT circuit, and described MPPT circuit is connected with dsp processor, and described dsp processor is connected with PC host computer; Described photovoltaic panel comprises some veneers and some pairs of plates, and described pair of plate one end becomes the angle of 30-150 ° to connect; MPPT system is provided with in described dsp processor.

Preferably, described MPPT circuit is provided with two.

Preferably, described dsp processor adopts TMS320F28035 chip.

Preferably, described dsp processor passes through RS485 PORT COM by data information transfer to PC host computer.

Pass through technique scheme, a kind of photovoltaic power prediction unit based on MPPT that the utility model provides, by increasing this device, extract typical two board component and replace whole photovoltaic power plant, MPPT circuit is utilized to carry out maximal power tracing to it, thus obtain the theoretical energy output of photovoltaic array, adopt the true generated output of photovoltaic panel, significantly reduce the impact of photovoltaic access on whole electrical network on the one hand, improve the safety and stability of operation of power networks, improve the accuracy of its prediction, reduce spinning reserve and the operating cost of electric power system on the other hand, to make full use of solar energy resources, reduce costs, to obtain larger economic benefit and social benefit.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below.

Fig. 1 is the structural representation of a kind of photovoltaic power prediction unit based on MPPT disclosed in the utility model embodiment;

Fig. 2 is the circuit diagram of the MPPT circuit of a kind of photovoltaic power prediction unit based on MPPT disclosed in the utility model embodiment.

In figure, number designation represents the title of parts:

1, photovoltaic panel 2, MPPT circuit

3, dsp processor 4, PC host computer

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.

A kind of photovoltaic power prediction unit based on MPPT that the utility model provides, as shown in Figure 1-2, comprise photovoltaic panel 1, MPPT circuit 2, dsp processor 3 and PC host computer 4, photovoltaic panel 1 is connected with MPPT circuit 2, MPPT circuit 2 is connected with dsp processor 3, and dsp processor 3 is connected with PC host computer 4; Photovoltaic panel 1 comprises some veneers and some pairs of plates, and two plate one end becomes the angle of 30-150 ° to connect, and optimized angle is 120 °; MPPT circuit 2 is provided with two, and wherein one also comprises BUCK circuit; Be provided with MPPT system in dsp processor 3, dsp processor 3 adopts TMS320F28035 chip, and dsp processor 3 passes through RS485 PORT COM by data information transfer to PC host computer 4.

This device first to extract in photovoltaic array two pieces of photovoltaic panel as tracing object, by MPPT system, it is carried out to the tracking of maximum power again, estimate the cell panel maximum power of two pieces of photovoltaic panel different angles in photovoltaic array, thus obtain the theoretical energy output of photovoltaic array.Photovoltaic generation has fluctuation and intermittence, large-scale photovoltaic power station is incorporated into the power networks and may impacts the safety and stability of electric power system and economical operation, the power output of photovoltaic plant is predicted to the cooperation contributing to power system dispatching department overall arrangement conventional energy resource and photovoltaic generation, timely adjustment operation plan, reasonable arrangement power system operating mode.

A kind of photovoltaic power prediction unit based on MPPT disclosed in the utility model, by increasing this device, extract typical two board component and replace whole photovoltaic power plant, MPPT circuit is utilized to carry out maximal power tracing to it, thus obtain the theoretical energy output of photovoltaic array, adopt the true generated output of photovoltaic panel, significantly reduce the impact of photovoltaic access on whole electrical network on the one hand, improve the safety and stability of operation of power networks, improve the accuracy of its prediction, reduce spinning reserve and the operating cost of electric power system on the other hand, to make full use of solar energy resources, reduce costs, to obtain larger economic benefit and social benefit.

To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims

1. the photovoltaic power prediction unit based on MPPT, it is characterized in that, comprise photovoltaic panel, MPPT circuit, dsp processor and PC host computer, described photovoltaic panel is connected with MPPT circuit, described MPPT circuit is connected with dsp processor, and described dsp processor is connected with PC host computer; Described photovoltaic panel comprises some veneers and some pairs of plates, and described pair of plate one end becomes the angle of 30-150 ° to connect; MPPT system is provided with in described dsp processor.

2. a kind of photovoltaic power prediction unit based on MPPT according to claim 1, it is characterized in that, described MPPT circuit is provided with two.

3. a kind of photovoltaic power prediction unit based on MPPT according to claim 1, is characterized in that, described dsp processor adopts TMS320F28035 chip.

4. a kind of photovoltaic power prediction unit based on MPPT according to claim 1, is characterized in that, described dsp processor passes through RS485 PORT COM by data information transfer to PC host computer.