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

本项研究的主要目的是明确绝缘子等绝缘设备会因劣化而损坏，并造成事故的事物的产生来源，以及对各种通信系统的干扰波，确定了维持良好通信状态的基础数据。然后，甚高频频段由于长期劣化等原因从绝缘子发出，用于功率分配的平成12财年--电磁--它进行了两个或两个以上的宽区天线接收，并采用达标时滞法对噪声进行位置定位，因为从劣化状态的绝缘子发出的电磁波一般都是伴随着局部放电的东西，与背景噪声相比，感测到的小幅度对它来说并不容易。然后，是开发人员…近年来在信号处理领域得到了更多的发展，研究将有源小波变换应用到信号处理中，我们确定信号对的噪声比有了大幅度的提高。此外，由于现场使用该技术时考虑了存在两个或两个以上劣化绝缘子，且存在多个作为电波源的情况，因此提出了一种能够假设一个部分的两个或两个以上方法电源产生位置的能力的测量方法和方法，并通过模拟实验进行了验证。此外，为了进行局部放电电流和发射的电磁波是否黎明的因果关系，还对结果进行了局部放电电流和辐射电磁波的同时测量，虽然在得到不一定明确的因果关系时很难得出是的，但得到了定性的认识。也就是说，根据目标绝缘体的形式，该局部放电电流形式的SUPEKUTO不同，因此发射的电磁波也不同。这一点变得很清楚，对电磁波的频谱测量能够表明可以推定辐射源的可能性。关于这一点的量化理解一直是未来的主题。较少

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