基于多频超声波技术的变压器油参数检测方法

发布时间：2019-06-01 18:17

【摘要】：为准确检测变压器油状态,针对变压器油参数,给出基于多频超声波检测技术的变压器油检测方法。开发相应的硬件检测装置和上位机分析软件。硬件部分可利用多频超声波技术,在1 s内,将大量不同频率的超声波新信号聚集在一个扫描测量频率,进行数以百计的扫描,从而在很短的时间内完成变压器状态诊断。给出了系统的设计原理和主功能单元设计,主功能单元包括发射部分和接收部分。其次,阐述了多元统法的计算原理。基于此,上位机软件可对携带有变压器油参数信息的超声波参数进行统计和分析,以提取其特征量,进一步建立起变压器油运行状态与超声波特征量的关联,进而判断变压器的运行状态。实验检测表明该系统可在线实时检测微水含量、击穿电压(BDV)、活性水等变压器油参数,解决了传统检测装置检测步骤繁琐、不能在线检测等问题,提高检测灵敏性,降低检测成本。
[Abstract]:In order to accurately detect the state of transformer oil, a transformer oil detection method based on multi-frequency ultrasonic detection technology is presented for transformer oil parameters. Develop the corresponding hardware detection device and upper computer analysis software. The hardware part can use multi-frequency ultrasonic technology to gather a large number of new ultrasonic signals of different frequencies in one scanning measurement frequency in 1 s, and carry out hundreds of scans, so as to complete the transformer state diagnosis in a very short time. The design principle of the system and the design of the main function unit are given. The main function unit includes the transmitting part and the receiving part. Secondly, the calculation principle of multivariate method is expounded. Based on this, the upper computer software can statistics and analyze the ultrasonic parameters with transformer oil parameter information, in order to extract its characteristic quantity, and further establish the relationship between transformer oil operation state and ultrasonic characteristic quantity. Then the operation state of the transformer is judged. The experimental results show that the system can detect the micro-water content on-line and real-time, breakdown voltage (BDV), active water and other transformer oil parameters, solve the tedious detection steps of the traditional detection device, can not detect on-line and so on, and improve the detection sensitivity. Reduce the cost of testing.
【作者单位】：广州供电局有限公司电力试验研究院;苏州华天国科电力科技有限公司;
【基金】：中国南方电网科技项目(GZGD20150301240091)
【分类号】：TM407

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