Partial discharge monitoring system and partial discharge monitoring method
First Claim
1. A partial discharge monitoring system comprising:
- electromagnetic wave detection sensors disposed in insulating gas enclosures being objects to be monitored to detect electromagnetic waves in the insulating gas enclosures;
converting devices sampling signals of the electromagnetic waves detected by the electromagnetic wave detection sensors, and converting the signals to digital data; and
an interface device integrating the digital data generated through the conversion by the converting devices, and transmitting the integrated digital data to a monitoring device,wherein the interface device comprises;
a detecting part detecting a zero cross point of a main circuit voltage signal in phase with a voltage signal applied to conductors disposed in the insulating gas enclosures, and deciding a sampling timing of the signals of the electromagnetic waves;
a transmitting part notifying the sampling timing decided by the detecting part to the converting devices;
an integrating part integrating the digital data which are received from the converting devices on per converting device basis; and
a transmitting part transmitting the digital data integrated by the integrating part to the monitoring device, andwherein the converting devices each comprise;
a timing deciding part deciding a timing when to sample the signal of the electromagnetic wave, based on the sampling timing notified from the interface device;
a detecting part sampling the signal of the electromagnetic wave based on the timing decided by the timing deciding part, and converting the signal to the digital data; and
a transmitting part transmitting the digital data generated through the conversion by the detecting part to the interface device.
1 Assignment
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Accused Products
Abstract
A partial discharge monitoring system includes: electromagnetic wave detection sensors disposed in insulating gas enclosures being objects to be monitored, converting devices, and an interface device. The interface device includes: a detecting part detecting a zero cross point of a voltage signal synchronous with a voltage signal applied to conductors disposed in the insulating gas enclosures, and deciding a sampling timing of signals of electromagnetic waves; a transmitting part notifying the sampling timing decided by the detecting part to the converting devices; an integrating part integrating digital data which are received from the converting devices on per converting device basis; and a transmitting part transmitting the integrated digital data to a monitoring device.
6 Citations
8 Claims
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1. A partial discharge monitoring system comprising:
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electromagnetic wave detection sensors disposed in insulating gas enclosures being objects to be monitored to detect electromagnetic waves in the insulating gas enclosures; converting devices sampling signals of the electromagnetic waves detected by the electromagnetic wave detection sensors, and converting the signals to digital data; and an interface device integrating the digital data generated through the conversion by the converting devices, and transmitting the integrated digital data to a monitoring device, wherein the interface device comprises; a detecting part detecting a zero cross point of a main circuit voltage signal in phase with a voltage signal applied to conductors disposed in the insulating gas enclosures, and deciding a sampling timing of the signals of the electromagnetic waves; a transmitting part notifying the sampling timing decided by the detecting part to the converting devices; an integrating part integrating the digital data which are received from the converting devices on per converting device basis; and a transmitting part transmitting the digital data integrated by the integrating part to the monitoring device, and wherein the converting devices each comprise; a timing deciding part deciding a timing when to sample the signal of the electromagnetic wave, based on the sampling timing notified from the interface device; a detecting part sampling the signal of the electromagnetic wave based on the timing decided by the timing deciding part, and converting the signal to the digital data; and a transmitting part transmitting the digital data generated through the conversion by the detecting part to the interface device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A partial discharge monitoring method in a partial discharge monitoring system which includes:
- electromagnetic wave detection sensors disposed in insulating gas enclosures being objects to be monitored to detect electromagnetic waves in the insulating gas enclosures;
converting devices sampling signals of the electromagnetic waves detected by the electromagnetic wave detection sensors, and converting the signals to digital data; and
an interface device integrating the digital data generated through the conversion by the converting device, and transmitting the integrated digital data to a monitoring device, the method comprising;detecting a zero cross point of a main circuit voltage signal in phase with a voltage signal applied to conductors disposed in the insulating gas enclosures to decide a sampling timing of the signals of the electromagnetic waves, and notifying the decided sampling timing to the converting devices, the detecting and the notifying being performed by the interface device; sampling the signals of the electromagnetic waves in the insulating gas enclosures detected by the electromagnetic detection sensors, based on the sampling timing notified from the interface device, and transmitting the sampled digital data to the interface device, the sampling and the transmitting being performed by the converting devices; and integrating the digital data which are received from the converting devices on per converting device basis, and transmitting the integrated digital data to the monitoring device, the integrating and the transmitting being performed by the interface device.
- electromagnetic wave detection sensors disposed in insulating gas enclosures being objects to be monitored to detect electromagnetic waves in the insulating gas enclosures;
Specification