A microprocessor-based high-speed relay for protection of parallel EHV/UHV feeders using waveform comparison technique

被引：2

作者：

Sengupta, S ^{[1
]}

Mukhopadhyay, AK ^{[1
]}

机构：

[1] Univ Calcutta, Dept Appl Phys, EE Sect, Kolkata 700009, W Bengal, India

来源：

ELECTRIC POWER COMPONENTS AND SYSTEMS | 2003年 / 31卷 / 09期

关键词：

EHV/UHV parallel feeders; waveform comparison technique; microprocessor-based relays;

D O I：

10.1080/15325000390227218

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In modern power systems, parallel EHV/UHV (extra high voltage/ultra high voltage) links are being frequently used to increase the capacity and reliability of the system. This requires faster and more reliable operation of relays and circuit breakers for protection of the links. Present-day available relays for protection of parallel feeders can operate in about one cycle, which may not be sufficient for application in EHV/UHV circuits. In this paper a microprocessor-based high-speed relay has been developed that operates within one quarter of a cycle, utilizing only the current signals. Application of a microprocessor enhances the accuracy, reliability, and speed of operation of the device, eliminating complicated hardware and dead band in operation.

引用

页码：891 / 897

页数：7

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