Maintaining the continuity of process operation after voltage sag or power interruption

被引：5

作者：

Lopes, DAR ^{[1
]}

de Jesus, EG ^{[1
]}

Valle, LAF ^{[1
]}

机构：

[1] Petr Brasileiro SA, BR-20035900 Rio De Janeiro, Brazil

来源：

INDUSTRY APPLICATIONS SOCIETY 51ST ANNUAL PETROLEUM AND CHEMICAL INDUSTRY TECHNICAL CONFERENCE | 2004年

关键词：

voltage sags; power quality; operational continuity; motor reacceleration;

D O I：

10.1109/PCICON.2004.1352784

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 a refinery, all process units have a continuous operation. A continuous supply of electricity is important to maintain process unit operation. Voltage sag due to faults in the power supply system or motors reacceleration may result in costly shutdown if motors driving essential loads stop during these voltages disturbances resulting mainly from contactor drop or tripping of adjustable speed drive. This paper considers two action lines. The first one approaches the sensitivity of critical electrical equipment to voltage sags while the second discusses systems exposed to sag and service continuity. Solutions implemented in motors control circuits and a set of parameters in adjustable speed drive are presented. The implementation of equipment solutions may cause other problems in the electrical system, like voltage sag due to motor reacceleration. A dynamic stability simulation to analyze motor reacceleration and the results of these simulations are presented.

引用

页码：81 / 86

页数：6

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