Retrofitting SCT-PPT excitation systems with digital control

Conference Record of the 2002 Annual Pulp and Paper Industry Technical Conference (Cat. No.02CH37352) Pub Date : 2002-06-17 DOI:10.1109/PAPCON.2002.1015137

J.A. Estes, R. Schaefer

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引用次数: 5

Abstract

Increases in power demand continue to burden power suppliers. Efficiency, reliability, improved control and uptime are key words to describe power production needs in today's power starved industry. Many operating power plants utilize excitation systems dating back to the 1960s and 1970s, using the original OEM-provided equipment. Such excitation systems are either obsolete or difficult to maintain in operating power plants today. These excitation systems are common on utility, industrial, and municipal steam and gas turbine generators. Each of these obsolete excitation systems represented a unique control design that today can be upgraded to a modern digital control excitation system. New "digitally" controlled systems will streamline the unit startup, improve the generator response, provide better monitoring and protection to the generating system, and make the Operator's job easier. This paper reviews a specific excitation system retrofit of the SCT-PPT (saturable current transformer/power potential transformer) static excitation system and the various factors involving a rehabilitation project that includes new equipment, design interface, installation, and commissioning. A successful retrofit project begins with proper planning to ensure that the new installation meets the schedule and on-time commitment for power production.

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用数字控制改造SCT-PPT励磁系统

电力需求的增长继续给电力供应商带来负担。在当今电力匮乏的工业中，效率、可靠性、改进的控制和正常运行时间是描述电力生产需求的关键词。许多运行中的发电厂使用的励磁系统可以追溯到20世纪60年代和70年代，使用原始oem提供的设备。这种励磁系统要么过时，要么难以在今天的运行电厂中维护。这些励磁系统是常见的公用事业，工业和市政蒸汽和燃气轮机发电机。每一个这些过时的励磁系统代表了一个独特的控制设计，今天可以升级到现代数字控制励磁系统。新的“数字”控制系统将简化机组启动，改善发电机响应，为发电系统提供更好的监控和保护，并使操作人员的工作更轻松。本文回顾了SCT-PPT(可饱和电流互感器/电力电位互感器)静态励磁系统的具体改造，以及涉及修复项目的各种因素，包括新设备，设计接口，安装和调试。一个成功的改造项目开始于适当的计划，以确保新的安装符合时间表和电力生产的准时承诺。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Conference Record of the 2002 Annual Pulp and Paper Industry Technical Conference (Cat. No.02CH37352)

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