System improvement to a stroke of lightning drastic observing system

System improvement to a stroke of lightning drastic observing system

Power failure by a stroke of lightning that happens frequently in summer. There was a risk of the a stroke of lightning in winter, and Tohoku Electric Power Co., Inc. announced that they had improved the accuracy of the system that understood the a stroke of lightning that caused the power transmission trouble drastic recently.
Up to now, it is Iu when leading to the restoration at the early stage of the power transmission trouble because the a stroke of lightning of winter on the Sea of Japan side where the grasp was difficult can be almost specified, and the accrual place is ascertained because of half a conventional error margin.
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It is necessary to stop transmitting electricity specifying the place as early as possible to prevent the fracture of the power transmission line by the short, and to do the maintenance check to the power transmission line at the a stroke of lightning lingua.
It has been understood to have missed more than the half about the a stroke of lightning of winter that occurs on the Sea of Japan side in around November - March though Tohoku Electric Power Co., Inc. introduced the a stroke of lightning monitoring system that applies the thunder observation equipment of the foreign make about 20 years ago.

The monitoring system consists of the antenna and the analyzer set up in nine points of the this company jurisdiction.
When three antennas or more catch the hertzian wave waveform of pathognomonic (reference waveform) at the a stroke of lightning, the place and strength of the a stroke of lightning are analyzed from the difference etc. of each antenna at time of arrival.
The same principle as the seismograph network that specifies the hypocenter from the time of arrival and strength of the shake of the earthquake.

In a general a stroke of lightning of summer, it is called, "Downward a stroke of lightning", and when analyzing it, the hertzian wave waveform = photograph (1) = is basis.
On the other hand, the discharge phenomenon faces the thundercloud from ground as for the a stroke of lightning of winter.
There are a lot of "Up-tick a stroke of lightning". Because the hertzian wave waveform is different from the type in summer, the possibility that the analyzer judged, "Noise different from the a stroke of lightning" is high.

Then, this company analyzed the hertzian wave of the a stroke of lightning of winter by the debt by ten years, ascertained waveform = photograph (2) = of the up-tick a stroke of lightning, and was able to set the second reference waveform. When it becomes enough in six points, and the error margin of the a stroke of lightning place became small, too the consequence and the antenna that devises the installation point and the sensor internal circuit of the sensor are Iu.
It will introduce it from next spring in full scale.

Head Kazuo Sato in the this company research and development center (Sendaishi Aobaku)｢The up-tick a stroke of lightning has occurred also in foreign countries. I want to contribute to the world with a new a stroke of lightning monitoring system. ｣It speaks. 

http://mytown.asahi.com/niigata/news.php?k_id=16000001007300006

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