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Photovoltaic power station system efficiency monitoring system

A photovoltaic power station and monitoring system technology, applied in the field of monitoring systems, can solve problems such as low operation and maintenance efficiency, inability to guarantee public network signal coverage, and lack of pertinence

Inactive Publication Date: 2020-11-10
SUZHOU NUCLEAR POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the operation and maintenance background of the photovoltaic power station only displays the actual power generation data of the day, but there is no accurate calculation of how much power the power station should generate, so it is impossible to know the power generation efficiency of the power station, and it is impossible to accurately judge the power attenuation and graying of components in the power station. Leading to low operation and maintenance efficiency and lack of pertinence
At the same time, for remote "weak signal" photovoltaic power plants, there is neither optical fiber access nor stable public network signal coverage, and there are great difficulties in remote communication of power plants

Method used

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  • Photovoltaic power station system efficiency monitoring system
  • Photovoltaic power station system efficiency monitoring system

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Embodiment 1

[0047] Embodiment 1 Monitoring system for photovoltaic power plant system efficiency

[0048] refer to Figure 1-2 As shown, the monitoring system for the efficiency of the photovoltaic power plant system in this embodiment mainly includes a data acquisition module, a data communication module and a data analysis module.

[0049] Data acquisition module, which is used to collect and process and store data such as temperature data, irradiation data, and ash coverage data of photovoltaic power stations; including sensors for collecting various data of power stations, data collection, digital-to-analog conversion, and data The processing functional modules, the sensors in this embodiment include dust sensors, temperature sensors and radiation sensors.

[0050] The data communication module is used to remotely transmit the data processed by the data acquisition module to the data analysis module. The data communication module includes a Beidou data terminal for data communicatio...

Embodiment 2

[0062] Embodiment 2 Calculation method of photovoltaic power station system efficiency

[0063] This embodiment provides a calculation method for the system efficiency of a photovoltaic power station, specifically as follows:

[0064] Photovoltaic power plant system efficiency (PR value) reveals the overall power generation loss of the power plant, and is calculated according to the following formula:

[0065] 1) Ideally, the efficiency of the photovoltaic power plant system

[0066] PR T =E T / (P e *h T )

[0067] Among them, PR T is the average system efficiency of the photovoltaic power plant in the time period T;

[0068] E. T It is the electricity input to the grid by the photovoltaic power station in the T time period, that is, the actual power generation;

[0069] P e The nominal capacity of the installed capacity of the photovoltaic power station components;

[0070] h T is the peak sunshine hours on the surface of the photovoltaic module within the time pe...

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Abstract

The invention discloses a photovoltaic power station system efficiency monitoring system. The system comprises the following modules: a data acquisition module which is used for acquiring data such asphotovoltaic power station temperature data, irradiation data and ash covering degree data and processing and storing the data; a data communication module which is used for remotely transmitting thedata processed by the data acquisition module to the data analysis module; and a data analysis module which is used for receiving, analyzing and calculating the data transmitted by the data communication module so as to obtain the efficiency of the power station system and track the power station system in real time. According to the system for monitoring the efficiency of the photovoltaic powerstation system, the influence of the temperature and the ash covering degree on the efficiency of the power station system is considered, so the system efficiency reflects the power generation level of the power station more truly, the system efficiency can be tracked actively, and the important reference is provided for ash removal time points of power station components.

Description

technical field [0001] The invention belongs to the technical field of photovoltaics, and in particular relates to a monitoring system for collecting and transmitting data of a photovoltaic power station and calculating and tracking system efficiency based on Beidou satellite communication. Background technique [0002] With the fading upsurge of photovoltaic power plant investment and construction and the decline of the state's electricity price subsidies for photovoltaic power plants, photovoltaic power generation has entered the era of grid parity in an all-round way, and the average cost of the photovoltaic industry is also declining. Operators of photovoltaic power plants will also pay more attention to the power generation capacity of power plants , Pay more attention to the operation of the power station, and will tilt the focus to the operation and maintenance of the power station. According to statistics, as of the first half of 2018, my country's cumulative install...

Claims

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Application Information

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IPC IPC(8): H02S50/00H02J13/00G06F17/14G06F17/18G01K7/18G01J1/42G01N21/55
CPCH02S50/00H02J13/00028H02J13/00017G06F17/142G06F17/18G01K7/18G01J1/4204G01N21/55H02J2213/10Y02E10/50Y04S40/124Y02E60/00
Inventor 陈亚彬李强张镇滔邹平国张文中
Owner SUZHOU NUCLEAR POWER RES INST