Data acquisition method and system suitable for large-scale distributed photovoltaics

Abstract

The present disclosure provides a data acquisition method and system suitable for large-scale distributed photovoltaics. The distributed photovoltaic power generation area is divided into multiple areas according to the grid division method, and photovoltaic electrical parameters and photovoltaic environmental parameters are collected in different areas; The collected data is transmitted and summarized through the short-distance communication network, and the power generation in the area is estimated based on the power generation estimation model, and the working status of each user's solar panels and inverters is preliminarily determined; the real-time monitoring data and the user's solar panels will be And the inverter working status information is compressed and encrypted and uploaded through the long-distance communication network. The present disclosure realizes more refined and wider coverage of photovoltaic data collection, and further improves the stability and efficiency of wireless network data transmission.

Description

technical field [0001] The present disclosure belongs to the field of photovoltaic data acquisition and transmission, and relates to a data acquisition method and system suitable for large-scale distributed photovoltaics. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] The rapid and large-scale development of distributed photovoltaics has played a positive role in promoting the utilization of renewable energy and maintaining the healthy development of the photovoltaic industry. However, the large number of distributed photovoltaics, decentralized access, and random fluctuations in output power will affect the operation and management of power grids. bring new challenges. The voltage of distributed photovoltaic access points is generally 10kV or 220V / 380V. However, large-scale photovoltaic power stations are usually built in remote mounta...

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Problems solved by technology

[0005] However, as far as the inventor knows, at present, the grid dispatching terminal has not yet achieved full coverage of distributed photovoltaic data access, and the existing problems include: low data collection quality and accuracy, incomplete data and poor real-time performance; the network environment is constantly changing, data transmission Instability; there are many distributed photovoltaic grid-connected points, the distribution is complex, and data collection is difficult and time-consuming; the amount of data collection is large, the pressure on network bandwidth is high, and the transmission efficiency is low.

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