摘要
研制新型变压器放电在线监测系统的目的在于使其能连续监测多台大型变压器的局部放电，并具有事故追忆、故障报警和定位等功能。采用宽带多通道、大容量、高采样率数据采样，为运用各种数字信号处理方法打下了基础；采用软件峰值保持得到放电量时间关系，可获得放电的统计信息； 采取电声联合监测方式，以实现放电点定位。采用组件对象模型，使系统能灵活地加入各种数据处理方法； 系统具备高度通用性，能适应不同目标（如变压器或电机）和不同的监测要求。在主控制室的上位机与现场的测量系统之间的通讯由网络传输系统实现，以提高系统整体抗干扰能力和信号传输的可靠性。该系统已在现场投入试运行，并具有良好的可伸缩性和灵活性，为将来分布式监测系统的建立打下了基础。
A set of stationary on line discharge monitoring system for power transformers is developed for continuously monitor of multiple power transformers with the functions of failure reminiscence, fault alarm and discharge point locating. The features of used multiple channel data acquisition setup such as wide bandwidth, large capacity, high sampling rate of A/D converter facilitate the further use of digital signal processing methods. The system uses peak value software holding algorithm to get the relationship between discharge quantity and time, from which the statistical information of discharge could be derived. In order to locate the discharge source the electrical and ultrasonic signals of discharge are simultaneously monitored. Furthermore, various kinds of data processing methods could be added into the system flexibly by taking the component object model as the groundwork of the whole software. The system has the high adaptability and could fit the needs of different monitoring requisition and various targets (transformers, generators, etc). In order to improve the reliability and performance of monitoring system itself, the network technology is used to carry out the communication between detecting system near transformers and upper class of computer arranged in main controlling room. The system has been put into operation on site. With good scalability and flexibility, the system builds the foundation of the future distributed monitoring systems.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1999年第7期5-8,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金
