Photovoltaic power station state monitoring device based on wireless

Abstract

The invention particularly relates to a photovoltaic power station state monitoring device based on wireless. The device comprises a first power module, a second power module, an RS485 level conversion module, a master control module, a GPRS / CDMA network module, a storage module and a watchdog module. Photovoltaic power station system information is collected by a data acquisition module through an RS485 bus, meanwhile, the state of an inverter and the state of a network are checked by a state monitoring module, different sending strategies are adopted by a data forwarding module according to the state of the inverter and the state of the network of the device, so that the integrity of data is guaranteed, and network flow is reduced. According to the photovoltaic power station state monitoring device, the wireless technology is used, compared with a traditional wired monitoring device, wiring cost and mounting cost are greatly lowered, meanwhile, compared with an existing mode that GPRS data transmission nodes are adopted, the reliability is greatly enhanced, the photovoltaic power station state monitoring device is more suitable for long-term outdoor working environments, transmission data are also extremely reduced, and network cost is saved.

Description

technical field [0001] The invention relates to devices in the fields of photovoltaic power generation and communication, in particular to a wireless-based photovoltaic power plant state monitoring device. Background technique [0002] As the petrochemical energy crisis and the greenhouse effect lead to the harsh climate of the earth, renewable energy, as a major issue related to the sustainable growth of human beings, has attracted more and more attention. Solar photovoltaic power generation technology has become more and more mature and popular in recent years. [0003] Photovoltaic power stations are mostly distributed in deserts, grasslands and other areas, and generally operate unattended. Therefore, the use of remote monitoring technology can reduce the operating costs and risks of photovoltaic power generation systems, which has important industrial value. [0004] The currently used monitoring technology is mainly divided into two types: wired and wireless. Wired mon...

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Problems solved by technology

[0011] The purpose of the present invention is to solve the problem of state monitoring of distributed photovoltaic power plants. Distributed photovoltaic inverters are often deployed in deserts, grasslands and other areas, and there are generally problems of no network and difficult centralized management. It provides a working environment A wireless-based photovoltaic power station status monitoring device that is harsh and unmaintained by professionals. The device is installed next to the photovoltaic inverter to collect parameters such as the current and voltage of the photovoltaic inverter and set the power protection value of the photovoltaic inverter.

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