基于红外传感器的高压断路器状态在线监测系统的设计.docVIP

- - PAGE I- 摘要 断路器在电力系统中担负控制和保护的重要任务，其运行直接影响着整个电力系统的稳定性和可靠性。断路器的在线监测是断路器状态检修的前提和关键。随着传感器技术和信号处理技术的发展，使得断路器一些原本不容易在线监测的状态量的监测得以实现。 本文阐述了断路器现有在线监测技术的发展，介绍了断路器状态量的种类，在采纳前人设计理念的基础上，设计了基于无线通信的断路器触头温度、行程在线监测系统，该系统由温度、行程测量模块和上位机监控模块两个部分组成。温度、行程测量模块采用红外温度传感器和增量式光电编码器，实现了非接触式测量断路器触头温度、行程。上位机监控模块由监控程序和通信单元组成，监控程序设定断路器温度测量周期，收集断路器触头的温度数据；并响应断路器分、合闸信号，收集动触头行程数据。另外上位机与测量模块之问采用无线射频方式传输数据，免去了温度、行程测量模块与上位机之间控制电缆的连接。 本文所设计的断路器触头温度、行程在线监测系统通过仿真实验，能够实现断路器触头温度、行程的测量以及上位机与温度、行程测量模块之间的无线数据传输。 关键词：断路器,在线监测,触头,温度,行程,无线通信 Abstract Responsible for circuit breakers in the power system control and protection of important tasks, which run directly affect the entire power system stability and reliability. Line circuit breaker circuit breaker status monitoring is a prerequisite and key maintenance. As the sensor technology and signal processing technology, makes some of the original circuit breaker is not easy to state the amount of online monitoring of the monitoring can be achieved.  In this paper, the existing circuit breaker line monitoring technology, introduces the state variable circuit breaker type, in the adoption on the basis of the previous design, the design of the circuit breaker based on wireless communication contact temperature, trip-line monitoring system, the system consists of temperature measurement module visit and PC monitor module composed of two parts. Temperature, the trip using infrared temperature sensor measurement module and incremental optical encoder, to achieve a non-contact temperature measurement circuit breaker contacts, trip. PC monitoring module by the control procedures and communication modules, monitor the temperature measurement period set the circuit breaker, breaker contact of the temperature data collected; and respond to the breaker points, closing signal, the moving contact travel data collection. Another measurement module of the PC and asked the use of radio frequency transmission of data, eliminating the need for temperature and stroke measu