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首页> 外文会议>2017 Petroleum and Chemical Industry Conference Europe >Study of full load test method for large VSDS driven by non-regenerative VSI
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Study of full load test method for large VSDS driven by non-regenerative VSI

机译：非再生VSI驱动的大型VSDS满载测试方法研究

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摘要

Full load back-to-back test of VSDS's (Variable Speed Drive Systems) are sometimes required for oil and gas projects. VSI (Voltage Source Inverter) technology is becoming the drive system of choice for super large compressor drives, up to 100 MW. Special consideration /facilities are necessary to perform back-to- back tests for VSDS driven by VSI, because the type of converter used for such large VSI's is usually a diode rectifier without regenerative capability. To realize a back-to-back test for this type of VSDS, a VSI with regenerative converter, (usually adopting PWM converter topology), is necessary. But it is a heavy burden to prepare such super large VSI with regeneration capability purely as a test facility. This paper proposes a test method to increase the load test capacity of a back-to-back test facility up to two times the regenerative converter capacity. This idea is to apply a VSI with regenerative converter as a soft starter during start-up of back-to-back connected motor and generator system and as a constant voltage and constant frequency power supply during testing of VSDS. The proposed test facility is configured by direct connection of the load machine output to the input transformer of tested VSDS to circulate the load power directly. Only loss power and reactive power is supplied by VSI with regenerative converter.
机译：石油和天然气项目有时需要对VSDS（变速驱动系统）进行全负荷背对背测试。 VSI（电压源逆变器）技术正成为高达100 MW的超大型压缩机驱动器的首选驱动系统。对于由VSI驱动的VSDS进行背对背测试，需要特殊的考虑/便利，因为用于如此大的VSI的转换器类型通常是没有再生能力的二极管整流器。为了实现这种VSDS的背对背测试，必须使用带有再生转换器的VSI（通常采用PWM转换器拓扑）。但是，纯粹将这种具有再生能力的超大型VSI用作测试设备是沉重的负担。本文提出了一种将背靠背测试设备的负载测试容量提高到可再生转换器容量的两倍的测试方法。这个想法是将带有再生转换器的VSI用作背靠背连接的电动机和发电机系统启动期间的软启动器，以及在VSDS测试期间用作恒定电压和恒定频率的电源。通过将负载机器的输出直接连接到经过测试的VSDS的输入变压器来配置建议的测试设备，以直接循环负载功率。带有再生转换器的VSI仅提供损耗功率和无功功率。

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