基于宽频振动传感器的电力设备状态监测方法可行性分析  

Feasibility Analysis of Power Equipment Condition Monitoring Method Based on Broadband Vibration Sensor

作　　者：相晨萌 高树国 刘宏亮 赵军 孟令明 贾云飞 张凡[2] XIANG Chenmeng;GAO Shuguo;LIU Hongiang;ZHAO Jun;MENG Lingming;JIA Yunfei;ZHANG Fan(State Grid Hebei Electric Power Research Institute,Shijiazhuang 050000,China;State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]国网河北省电力有限公司电力科学研究院,石家庄050000 [2]西安交通大学电力设备电气绝缘国家重点实验室,西安710049

出　　处：《高压电器》2024年第4期83-91,共9页High Voltage Apparatus

基　　金：国网河北省电力有限公司科技项目(SGHEDK00DYJS2000250)。

摘　　要：宽频振动信号包括1 Hz~20 kHz的低频振动信号和20~500 kHz的高频超声信号。近年来,利用振动信号对变压器、电容器、电抗器等电力设备进行状态检测的手段日益成熟,超声信号也可以很好地检测出电力设备中的局部放电并定位,均已有较为成熟的应用。文中提出了基于宽频振动传感器的电力设备状态监测方法,并使用该传感器同时测量了脉冲振动源的振动以及油纸绝缘针板电极局部放电的超声,借助仿真对超声时延进行了修正,对局部放电进行了识别,并与脉冲电流法所得结果进行了对比。结果表明,所提出的监测方法可以很好地监测到振动和超声,并实现局部放电的识别,该方法应用于电力设备状态监测是可行的。Broadband vibration signal includes both low frequency vibration signal within 1 Hz-20 kHz and high fre-quency ultrasonic signal within 20-500 kHz.In recent years,the method of using vibration signal to detect the state of such power equipment as transformer,capacitor and reactor is more and more mature.Using ultrasonic signal to detect and locate partial discharge of power equipment has also been an expertly application.In this paper,the condi-tion monitoring method based on broadband vibration sensor is proposed.The vibration of the pulsed vibration source and the ultrasonic of partial discharge of the oil-paper insulated needle board electrode are measured simultaneously by the sensor.The ultrasonic time delay is corrected by simulation.The partial discharge is identified and compared with the results obtained by pulse current method.The results show that the proposed monitoring method can detect vibration and ultrasonic well and achieve the identification of partial discharge.The method proposed is feasible for the condition monitoring of power equipment.

关 键 词：宽频振动 状态监测 振动 超声 复合传感器 

分 类 号：TM507[电气工程—电器] TP212[自动化与计算机技术—检测技术与自动化装置]