Location and Modeling of VHF/UHF Electro Magnetic Wave Radiated from Power Apparatus

本研究的本年度的主要目的是，为了预先知道绝缘体等绝缘设备会因劣化而导致破坏，并会导致事故，指定了应对方法的事物的产生源，并提供保护，以及对各种通信系统的干扰波，并判定获得了用于保持良好通信状态的基本数据。然后，在平成12财政年度中，由于诸如长期劣化的原因从配电用绝缘体发射的VHF频带-电磁-它执行两个或更多个扩展区域天线接收，并通过到达时间滞后方法执行噪声的位置定位。由于通常从劣化状态的绝缘体发射的电磁波是伴随局部放电的东西，与背景噪声相比，小幅度的噪声不易被感知，因此， 关于我们 近年来在信号处理领域发展起来的主动小波变换，研究将其应用于信号处理中，大大提高了信号的信噪比。此外，由于考虑到当在现场使用这种技术时存在两个或更多个劣化绝缘体，并且存在多于一个作为电波源时，提出了用于推测一部分的两个或更多个方法电源产生位置的能力的测量方法和方法，并且通过模拟实验进行了验证。此外，为了进行局部放电电流与放射电磁波的因果关系是否为黎明，还进行了局部放电电流与放射电磁波的同时测量。关于结果，虽然到了不一定得到明确的因果关系的时候没有很肯定，但得到了定性的理解。也就是说，取决于该局部放电的目标绝缘体SUPEKUTO的形式，电流形式不同，并且作为结果发射的电磁波不同。它能够变得清晰，电磁波的频谱测量能够显示辐射源可以被推测的可能性。对这一点的定量认识是一个未来的课题。少

We specified the generation source of the thing for which the method of coping with it for knowing beforehand that insulated apparatus, such as an insulator, will result in destruction from degradation, and will cause the accident in the main purpose of this year of this research, and protecting is offered, and the disturbance wave to various communication systems, and decided that the basic data for maintaining a good communication state are obtained. then, VHF band emitted for reasons, such as the secular degradation, from the insulator for power distribution in the Heisei 12 fiscal year-electromagnetism-it performed two or more extensive zone antennas receiving, and carrying out position locating of the noise by the attainment time lag method Since the electromagnetic wave generally emitted from the insulator of a degradation state is a thing accompanied by partial electric discharge, compared with background noise, sense with the small amplitude is not easy for it. Then, it was dev … More eloped in the field of signal processing in recent years, research applied the active wavelet transformation to signal processing, and we decided that a substantial signal pair noise ratio is raised. Furthermore, since it was considered when two or more degradation insulators exist when using this kind of technique on the spot, and more than one exist as a source of an electric wave, the measuring method and method for the ability to presume two or more method power supply generating positions of a portion was proposed, and it verified by the imitation experiment. furthermore, in order to carry out causal relationship of partial electric discharge current and the electromagnetic wave emitted for whether being dawn, simultaneous measurement of partial electric discharge current and a radiation electromagnetic wave was also performed About the result, although there is no yes very much by the time it obtains not necessarily clear causal relationship, qualitative understanding is obtained. That is, depending on the form of the target insulator SUPEKUTO of that partial electric discharge current form differs and the electromagnetic wave emitted as a result differs. It was able to become clear and spectrum measurement of an electromagnetic wave was able to show a possibility that the source of radiation could be presumed. Quantitive understanding about this point has been a future subject. Less