Power Compatibility of Induction Motors in Industrial Grids Containing Synchronous Generators

Author:

Varetsky Yuriy12ORCID,Gajdzica Michal1

Affiliation:

1. Department of Energy and Fuels, AGH University of Kraków, 30-059 Kraków, Poland

2. Department of Power Engineering and Control Systems, Lviv Polytechnic National University, 79013 Lviv, Ukraine

Abstract

Starting an induction motor causes voltage sag in the industrial grid that may disturb the operation of grid equipment. Direct-on-line starting is the simplest and most cost-effective method for starting induction motors, but also the most problematic. Large industries often use internal power plants with synchronous generators and starting powerful motors may impact the generator operations. The synchronous generators could be operated with the automatic or manual mode of voltage control. As the operation experience proves, the generator voltage control mode has a significant impact on the transient behaviours in the industrial power grid when starting a large induction motor. This article presents a case study of the synchronous generator tripping within a true medium-voltage industrial grid during the direct-on-line starting of a large induction motor driving the feed water pump. An analysis of the generator protection logs after the tripping showed that the synchronous generator was controlled in manual mode and its protection relay settings were exceeded. The transients initiated by induction motor starts were studied for possible configurations and operating conditions of the grid using a model developed on the Matlab/Simulink Software platform. The simulations have shown that concern about starting large motors in industrial grids containing internal synchronous generators needs to be solved considering the grid configurations and the coordination of generator protection and control devices.

Funder

AGH University of Krakow

program “Excellence Initiative—Research University”

Publisher

MDPI AG

Reference46 articles.

1. Pawlik, M., and Strzelczyk, F. (2012). Power Plants, Scientific Publishing of PWN.

2. Paska, J. (2020). Electricity Production, Scientific Publishing of the Warsaw University of Technology.

3. Energizing arc furnace transformer in power grid involving harmonic filter installation;Warecki;Prz. Elektrotechniczny,2015

4. The procedure for selecting the ratings of capacitor banks and reactors of the filtering systems;Varetsky;Prz. Elektrotechniczny,2020

5. Improvement of energy efficiency in auxiliaries system of a power station;Kotlicki;Energetyka,2013

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3