基于温度测量法的光伏阵列失效组件监测系统的设计

Design of PV Array Failure Module Monitoring System Based on Temperature Measurement

摘要:

为了解决光伏阵列电站中的光伏组件由于各种原因产生失效,不能及时发现、维护而导致较大的经济损失问题,提出了一种通过在PV组件接线盒上安装无线温度传感器,动态的监控旁路二极管温度间接监测失效组件的新方法,该方法能够在不影响光伏组件结构的情况下及时发现、定位光伏阵列中失效的光伏组件;文中对热斑效应形成和温度测量法的联系以及异常数据点的处理做了较为详细的阐述,设计了温度采集和无线传输系统的硬件电路,电路简单、可靠,成本低廉易于实现,采集精度符合设计要求;并编写了PC端的的监测系统的程序,通过对PV组件失效进行遮挡验证,结果表明基于温度测量法的光伏阵列失效组件监测系统检测结果可靠温度,易于使用。

Abstract:

In order to solve the photovoltaic PV array power plant in the failure caused by various reasons, can not be found in time, the maintenance problem caused large economic losses, put forward through the installation of a wireless temperature sensor in the PV component of the junction box, a new method of monitoring the temperature of the bypass diode indirect monitoring failure component, this method can not effect of structure of PV module under the timely discovery, photovoltaic PV array in the failure location. Detail processing on the formation of hot spot effect and the method of measuring the temperature of the contact and abnormal data, the hardware circuit of the temperature acquisition and wireless transmission system design, the circuit is simple and reliable, low cost and easy to implement, acquisition accuracy meets the design requirements. And the preparation of the PC terminal monitoring system program, the occlusion is verified by failure of PV components, results show that the PV array temperature measurement component failure monitoring system based on temperature detection results are reliable, easy to use.