Sweden/Poland power link: impact of variable frequency rectifier ripple currents on torsional stressing of turbine-generator shafts

PowerTech Budapest 99. Abstract Records. (Cat. No.99EX376) Pub Date : 1999-08-29 DOI:10.1109/PTC.1999.826706

T. Hammons

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引用次数: 1

Abstract

Summary form only given. This paper makes an in-depth analysis of shaft torsional phenomena in steam turbine-generator-exciter shafts of generators in Poland and Sweden which may result from ripple current superimposed on the HVDC link current in an HVDC asynchronous link. The analysis relates to the 600 MW, 450 kV HVDC cable which is to connect Vattenfall's Karshamn oil-fired power station in the South of Sweden to Dunovo in the North of Poland where the length of the submarine cable is approximately 237 km. The studies are performed for machines in close proximity to the converter station in both Sweden and Poland. It extends earlier work to analyze attenuation (or amplification) of DC ripple current at the inverter due to the submarine cable with its overhead line in Poland and the line's associated smoothing inductors. It examines HVDC link harmonic scaling factors and AC system scaling factors for modulation product harmonic currents impressed on the generators of the Swedish and Polish grid networks by the inverter, not examined in-depth in the literature heretofore.

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瑞典/波兰电力线路:变频整流纹波电流对汽轮发电机轴扭转应力的影响

只提供摘要形式。本文对波兰和瑞典两国的汽轮机-发电机-励磁机轴扭现象进行了深入的分析，分析了在高压直流异步链路中纹波电流叠加在高压直流链路电流上所造成的轴扭现象。该分析涉及600兆瓦、450千伏的高压直流电缆，该电缆将连接Vattenfall位于瑞典南部的Karshamn燃油发电站和波兰北部的Dunovo，海底电缆长度约为237公里。这些研究是在瑞典和波兰靠近换流站的机器上进行的。它扩展了早期的工作，以分析逆变器处直流纹波电流的衰减(或放大)，这是由于海底电缆及其在波兰的架空线路和线路相关的平滑电感。它研究了高压直流链路谐波比例因子和交流系统比例因子，这些比例因子是由逆变器在瑞典和波兰电网的发电机上留下的调制产品谐波电流，迄今为止在文献中没有深入研究。

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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PowerTech Budapest 99. Abstract Records. (Cat. No.99EX376)

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