Technical Solutions and Standards Upgrade for Photovoltaic Systems Operated Over 1500 Vdc

2018 IEEE 4th International Forum on Research and Technology for Society and Industry (RTSI) Pub Date : 2018-09-01 DOI:10.1109/RTSI.2018.8548360

L. Scarpa, G. Chicco, F. Spertino, P. Tumino, Marco Nunnari

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引用次数: 4

Abstract

This paper deals with photovoltaic (PV) systems with operating voltage increased over the value 1500 V in DC, which represents the limit of the current solutions and the actual standard for the PV plant at utility-scale level. The increase of the DC voltage is aimed at reducing the cable energy losses, the number of components and to optimise the layout of the plants, increasing the competitiveness of Medium Voltage PV (MVPV) solutions with rated powers of hundreds of megawatt. The analysis carried out has identified the possible solutions to adopt in order to reach this target and has remarked that today the International Standards are not covering all the aspects of the technical solutions to be introduced in a MVPV plant. This paper indicates the key issues to be addressed by new Standards on some components in order to enable the deployment of MVPV solutions. Finally, the characteristics of an installation at 1500 V DC and some results of tests carried out on the isolation system of a 1500 V PV plant are discussed.

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1500 Vdc以上运行的光伏系统的技术解决方案和标准升级

本文研究的是直流运行电压超过1500 V的光伏系统，这代表了当前解决方案的极限，也是光伏电站在公用事业规模上的实际标准。增加直流电压的目的是减少电缆能量损失，组件数量和优化工厂布局，提高额定功率为数百兆瓦的中压光伏(MVPV)解决方案的竞争力。所进行的分析确定了为达到这一目标而采用的可能解决方案，并指出，目前的国际标准并未涵盖MVPV工厂引入的技术解决方案的所有方面。本文指出了新标准在某些组件上需要解决的关键问题，以便实现MVPV解决方案的部署。最后，讨论了1500v直流装置的特点和1500v光伏电站隔离系统的一些试验结果。

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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2018 IEEE 4th International Forum on Research and Technology for Society and Industry (RTSI)

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