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Influence of Current Sensor Technology on Current-Transformer Saturation in Distance Protection
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Javad Eshraghi   , Sepehr Soltani * |
| Departement of Electrical Engineering, Sabzevar Branch, Islamic Azad University, Sabzevar, Iran |
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Abstract: (803 Views) |
Today, the distance relay is widely used in transmission and over-distribution lines. Due to the zoning of the protection zone, the distance relay provides a simple and economical way to detect faults. The current-transformer saturation in high-voltage substation causes faults in the protection zones of the distance relay and the operating time of the distance relay zones is not correct when an error occurs. To solve this problem, this article suggests optical current transformers. Initially, the simulated optical current transformer model was presented, the optical current transformer was compared with the conventional current transformer in IEEE 9 bus network substation using DIGSILENT software. The results show that the proposed optical current transformer covers well the faults of relay distance caused by the saturation of the normal current transformer. |
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| Keywords: Current Transformer, Distance Relay, Fiber-Optic Current Sensor |
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Full-Text [PDF 1184 kb]
(859 Downloads)
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Type of Study: Applicable |
Subject:
Special
Received: 2020/04/13 | Accepted: 2020/06/19 | Published: 2020/06/19
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