阅读说明：本技术 光伏发电故障监测系统及其方法 (Photovoltaic power generation fault monitoring system and method thereof ) 是由 张�林 于 2019-07-31 设计创作，主要内容包括：本发明公开了光伏发电故障监测系统及其方法,该系统包括：安装在光伏发电装置上的故障监测终端,用于实时检测光伏发电装置上的故障信息以及将故障信息发送至数据传输终端上；数据传输终端,用于接收与其连接的故障监测终端监测的故障信息并将多个故障监测终端的数据发送至远程监控终端；远程监控终端,用于接收与其连接的数据传输终端的故障信息并对故障信息进行分析处理；其中,所述故障监测终端与数据传输终端通过ZigBee连接。本发明实现故障信息实时在线采集、短距离无线数据传输、数据融合以及远程传输监控等功能。本发明具有网络组建灵活、数据传输速率快、维护方便等优点。(The invention discloses a photovoltaic power generation fault monitoring system and a method thereof, wherein the system comprises: the fault monitoring terminal is arranged on the photovoltaic power generation device and used for detecting fault information on the photovoltaic power generation device in real time and sending the fault information to the data transmission terminal; the data transmission terminal is used for receiving fault information monitored by the fault monitoring terminals connected with the data transmission terminal and sending data of the fault monitoring terminals to the remote monitoring terminal; the remote monitoring terminal is used for receiving the fault information of the data transmission terminal connected with the remote monitoring terminal and analyzing and processing the fault information; the fault monitoring terminal is connected with the data transmission terminal through ZigBee. The invention realizes the functions of real-time online acquisition of fault information, short-distance wireless data transmission, data fusion, remote transmission monitoring and the like. The invention has the advantages of flexible network construction, high data transmission rate, convenient maintenance and the like.)

1. Photovoltaic power generation fault monitoring system, its characterized in that includes:

the fault monitoring terminal is arranged on the photovoltaic power generation device and used for detecting fault information on the photovoltaic power generation device in real time and sending the fault information to the data transmission terminal;

the data transmission terminal is used for receiving fault information monitored by the fault monitoring terminals connected with the data transmission terminal and sending data of the fault monitoring terminals to the remote monitoring terminal;

the remote monitoring terminal is used for receiving the fault information of the data transmission terminal connected with the remote monitoring terminal and analyzing and processing the fault information;

the fault monitoring terminal is connected with the data transmission terminal through ZigBee.

2. The photovoltaic power generation fault monitoring system of claim 1, wherein: the fault monitoring terminal comprises a ZigBee communication module, a microprocessor and a sensor array;

the ZigBee communication module is used for realizing data transmission with a data transmission terminal;

the microprocessor is used for collecting fault information collected by the sensor array and controlling the ZigBee communication module to transmit the fault information;

the sensor array is used for collecting fault information, and the fault information comprises an inverter output end voltage signal, a combiner box temperature signal, a crystalline silicon solar cell temperature signal and a PV terminal voltage signal.

3. The photovoltaic power generation fault monitoring system of claim 2, wherein: the data transmission terminal comprises a ZigBee communication module and a data processing module;

the ZigBee communication module is used for connecting the ZigBee communication module and receiving fault information monitored by the fault monitoring terminal;

the data processing module is used for carrying out abnormity detection on the fault information and sending the data to the remote monitoring terminal after the data is arranged.

4. Photovoltaic power generation fault monitoring system according to claim 1 or 3, characterized in that: the remote monitoring terminal is used for receiving the fault information, analyzing the fault information, performing remote control and responding to the alarm information.

5. The photovoltaic power generation fault monitoring system of claim 4, wherein: the analysis of the fault information refers to the fault analysis of the photovoltaic power generation device, and mainly comprises the steps of comparing the fault information with historical data, calculating a characteristic value and an average value parameter, and judging whether the fault information accords with a fluctuation trend to decide the fault problem of the photovoltaic power generation device by fitting fluctuation drive of the historical data.

6. The photovoltaic power generation fault monitoring system of claim 4, wherein: the remote monitoring terminal is communicated with the data transmission terminal through a Beidou satellite.

7. The photovoltaic power generation remote monitoring method is characterized by comprising the following steps:

(1) acquiring fault information of the photovoltaic power generation device through a fault monitoring terminal;

(2) transmitting the fault information to a data transmission terminal in real time by using ZigBee;

(3) the data transmission terminal performs abnormity detection on the fault information and transmits the fault information to the remote monitoring terminal by using the Beidou satellite;

(4) and analyzing the fault information and the historical data of the photovoltaic power generation device through the remote monitoring terminal and giving an alarm.

Technical Field

The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic power generation fault monitoring system and a method thereof.

Background

At present, a monitoring scheme of a photovoltaic power generation system is formed by utilizing a single chip microcomputer, RS485 and configuration software, so that the monitoring system is low in data transmission efficiency, few in accommodated nodes and high in subsequent maintenance cost.

The impact on the power grid can be effectively relieved by predicting the output power of the photovoltaic grid-connected power generation system, and meanwhile, power station management personnel can conveniently decide the power dispatching system, and the factors influencing the prediction of the output power of the photovoltaic power generation system are more, such as illumination intensity, temperature and humidity, sunshine duration and the like. The traditional prediction method mainly aims at the influence factors such as the illumination intensity, the environmental temperature and the like as research factors, and only single output power can be predicted by adopting the existing output power model.

Disclosure of Invention

The invention aims to provide a photovoltaic power generation fault monitoring system with high data transmission effect and multiple accommodating nodes and a monitoring method of a combined power prediction model.

The purpose of the invention is realized by the following technical scheme:

photovoltaic power generation fault monitoring system includes:

the fault monitoring terminal is arranged on the photovoltaic power generation device and used for detecting fault information on the photovoltaic power generation device in real time and sending the fault information to the data transmission terminal;

the data transmission terminal is used for receiving fault information monitored by the fault monitoring terminals connected with the data transmission terminal and sending data of the fault monitoring terminals to the remote monitoring terminal;

the remote monitoring terminal is used for receiving the fault information of the data transmission terminal connected with the remote monitoring terminal and analyzing and processing the fault information;

the fault monitoring terminal is connected with the data transmission terminal through ZigBee.

Furthermore, the fault monitoring terminal comprises a ZigBee communication module, a microprocessor and a sensor array;

the ZigBee communication module is used for realizing data transmission with a data transmission terminal;

the microprocessor is used for collecting fault information collected by the sensor array and controlling the ZigBee communication module to transmit the fault information;

the sensor array is used for collecting fault information, and the fault information comprises an inverter output end voltage signal, a combiner box temperature signal, a crystalline silicon solar cell temperature signal and a PV terminal voltage signal.

Further, the data transmission terminal comprises a ZigBee communication module and a data processing module;

the ZigBee communication module is used for connecting the ZigBee communication module and receiving fault information monitored by the fault monitoring terminal;

the data processing module is used for carrying out abnormity detection on the fault information and sending the data to the remote monitoring terminal after the data is arranged.

Further, the remote monitoring terminal is used for receiving the fault information, analyzing the fault information, performing remote control and responding to the alarm information.

Further, the analyzing of the fault information refers to fault analysis of the photovoltaic power generation device, and mainly includes comparing the fault information with historical data, calculating a characteristic value and an average value parameter, and determining whether the fault information meets a fluctuation trend or not to decide a fault problem of the photovoltaic power generation device by fitting fluctuation drive of the historical data.

Further, the remote monitoring terminal is communicated with the data transmission terminal through a Beidou satellite.

The invention also provides a photovoltaic power generation remote monitoring method, which comprises the following steps:

(1) acquiring fault information of the photovoltaic power generation device through a fault monitoring terminal;

(2) transmitting the fault information to a data transmission terminal in real time by using ZigBee;

(3) the data transmission terminal performs abnormity detection on the fault information and transmits the fault information to the remote monitoring terminal by using the Beidou satellite;

(4) and analyzing the fault information and the historical data of the photovoltaic power generation device through the remote monitoring terminal and giving an alarm.

The invention realizes the functions of real-time online acquisition of fault information, short-distance wireless data transmission, data fusion, remote transmission monitoring and the like. The invention has the advantages of flexible network construction, high data transmission rate, convenient maintenance and the like. The equipment operation and maintenance personnel can master the operation condition of the photovoltaic power station at any time by using the invention, thereby improving the flexibility and convenience of monitoring the photovoltaic power station.

Detailed Description