Considering momentary and sustained reliability indices in the design of distribution feeder overcurrent protection

被引：3

作者：

Bishop, MT ^{[1
]}

McCarthy, CA ^{[1
]}

Rose, VG ^{[1
]}

Stanek, EK ^{[1
]}

机构：

[1] Cooper Power Syst, Syst Engn Grp, Franksville, WI USA

来源：

1999 IEEE TRANSMISSION AND DISTRIBUTION CONFERENCE, VOLS 1 & 2 | 1999年

关键词：

SAIDI; SAIFI; MAIFI; overcurrent protection; reliability cost benefit;

D O I：

10.1109/TDC.1999.755342

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 response to customer complaints about momentary interruptions, some utilities have removed fast tripping on distribution overcurrent protection devices. At the same time, on many systems, the sustained outage indices, SAIFI and SAIDI, have shown a trend towards increased frequency of interruptions per customer and longer accumulated outage durations. State regulatory agency (PUCs/PSCs) emphasis on sustained outage indices is a cause for reconsidering overcurrent protection strategies. A scheme targeting reduced momentary interruptions (i.e., removing fast tripping) may not be the most effective strategy to satisfy both the regulating entities as well as the utility's customers. By prudently installing another layer of sectionalizing devices, including fast tripping, SAIFI, SAIDI, and MAIFI can be decreased. The paper will show (by way of feeder application examples) that the overcurrent protection scheme can be designed to take full advantage of fast tripping, effectively reducing both sustained and momentary outages experienced by customers.

引用

页码：206 / 211

页数：6