Photovoltaic power station monitoring system based on MQTT protocol

Abstract

The invention discloses a photovoltaic power station monitoring method based on an MQTT protocol, which comprises an intelligent gateway of the photovoltaic power station, a monitoring cloud platformof the photovoltaic power station, a mobile phone App and a computer Web terminal. On the one hand, the intelligent gateway of photovoltaic power station communicates with the equipment of photovoltaic power station, collects the equipment data of photovoltaic power station in real time, and monitors the running state of the equipment; On the other hand, the intelligent gateway of photovoltaic power station communicates with the cloud server through the Internet, and publishes the device data, status information and fault information to the cloud server according to the custom MQTT communication protocol. The cloud platform of photovoltaic power station monitoring system is composed of an MQTT message proxy server, a background management system, an MySQL database server and a Redis server. Mobile App and computer Web Terminal are the tools for users to interact with the system. Photovoltaic intelligent gateway and computer Web or mobile App as the client directly use MQTT protocol toconnect with the message broker to complete the message subscription and publishing functions.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a photovoltaic power station monitoring system based on the MQTT protocol. Background technique [0002] Under the vigorous advocacy of the state, photovoltaic power plants, especially distributed photovoltaic power plants, have made great progress. However, due to technical and cost reasons, the monitoring methods of photovoltaic power plants are relatively backward, which has caused great troubles to the fault detection and operation and maintenance management of photovoltaic power plants, specifically reflected in backward management and low efficiency. [0003] System monitoring is very necessary for photovoltaic power plants. It can clearly display the operating conditions of the equipment in the station and some operating parameters on the monitoring background. In the field of new energy, centralized photovoltaic power generation and wind power generation are also v...

AI Technical Summary

Problems solved by technology

Distributed photovoltaic power stations, especially small-scale distributed photovoltaic power stations, have almost no monitoring system, and maintenance and operation are all based on manual on-site inspections. Over time, these photovoltaic power stations are almost in a state of idleness, causing a great waste of resources.

[0004] In recent years, many scientific research institutions and enterprises have successively paid attention to this field, trying to use various technical means to transform this part of the photovoltaic power station, but the effect is not obvious. There are many reasons, one of which is the high cost of communication.

The communication mode selected for remote monitoring of photovoltaic power plants is mainly broadband wired or 3G / 4G wireless. Remote distributed power plants, but because the original communication protocol HTTP is relatively complicated, it is difficult to implement, and the equipment required to carry the load has high power consumption and high power. Due to the large communication volume of the HTTP protocol packet, the communication cost is also high

These have greatly limited the development of monitoring systems for photovoltaic power plants.

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