电力设备绝缘性在线监测方法

为了减小电力设备绝缘性在线监测装置安装和维护的难度,降低现场干扰对测量精度的影响,提出了一种利用无线传感器网络（WSN：Wireless Sensor Networks）通信及授时、采用相关性算法计算介质损耗角的新方法。详细阐述了方法的测量原理、同步测量授时方法,对相关性算法计算相角进行了理论论证,并导出软件实现公式,设计了用于验证该方法的在线监测系统。通过对比得出,相关性算法比FFT（Fast Fourier Transformation）算法的效率提高了128倍,且精度更高。现场模拟实验表明,基于该方法的监测系统对介质损耗因素tanδ的测量精度达到了0.039%,较QS1西林电桥法具有更强的抗干扰能力。

Method of On-Line Monitoring for Insulation of Power Equipment

In order to reduce the influence caused by interference on site and the difficulty to install the system,an on-line monitoring method based on WSN（Wireless Sensor Networks） and correlation algorithm is designed to measure dielectric loss in high-voltage electricity equipments.It provided detail introductions to the system measuring principle and synchronization sampling.Theoretical demonstration to phase calculation with correlation algorithm is supplied and the design of on-line monitoring system based on such algorithm is represented.Compared with FFT（Fast Fourier Transformation） algorithm,the efficiency of correlation algorithm is 128 times higher.On-site simulation experiments show that the measurement precision of dielectric loss factor tan δ has reached 0.039%,and the system has better anti-interference than QS1 furbenicillin bridge.