| With increasing pressure on global resources and the environment, deepening the process of electricity market and user requirements for reliability and quality of power on the rise, building a more secure, reliable, environmentally friendly, economical the power system has become a common goal of global power industry. The most commonly used techniques adopted in the monitoring of ice thickness are easily influenced by electromagnetic fields and require reliable power supply and wireless signal. Fortunately, the fiber Bragg grating (FBG) sensor could replace the conventional real-time monitoring methods, because of the characteristics of electromagnetic immunity, the potential for long-distance signal transmission, passivity, anticorrosion, and high sensitivity. In this paper, we carried out the research about power line and its environmental information monitoring technique based on FBG.The main contents and results are as follows:1. Be involved in the design of the temperature sensor, icing sensor, wind sensor and related devices. These sensors are based on the principle of fiber Bragg grating, with passive resistance, high reliability, long-distance transmission and other characteristics.2. Design and implement a system software of monitoring grid power lines and environmental information based on MVC design pattern This software enables the storage of the data display, query, depicting, demodulator configuration, alarm and a series of functions.3. Complete the test of power line and its environmental status information monitoring system hardware and software. FBG temperature sensor error is within1℃. Under natural condition, for FBG icing sensor, the measurement error of ice is less than1mm. For FBG wind speed sensor, the measurement error of wind speed is less than0.5m/s. Throughout the experiment, the monitoring system software implement data acquisition, demodulator configuration, alarm and other functions and maintain long-term stable operation. |
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