Methodology for Assessment of the Impact of Smart Transformers on Power System Reliability

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society Pub Date : 2019-10-01 DOI:10.1109/IECON.2019.8926640

Junru Chen, A. Nouri, A. Keane, T. O’Donnell

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Abstract

The smart transformer (ST) has been proposed as an alternative to the traditional low frequency transformer as a means to provide extra control functionality in the smart power system. The ST has merits in terms of reactive power decoupling and voltage decoupling at the primary and secondary side. This provides flexibility for reactive power compensation in the transmission system and demand reduction in the distribution system. Using its ability to control demand through voltage regulation, the ST provides the possibility to reduce demand while keeping the entire load online, which can provide an alternative to load curtailment. Thus, it may provide a means to improve power system reliability. However, no of previous research has investigated these potential system reliability benefits of the ST. The paper presents a methodology which can be used to quantify the system reliability impacts of the use of STs as an interface between the transmission and distribution systems. Using the methodology, the ST impacts on the system reliability are assessed using the IEEE 39-bus system as an example.

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智能变压器对电力系统可靠性影响的评估方法

智能变压器(ST)已被提出作为传统低频变压器的替代方案，作为在智能电力系统中提供额外控制功能的手段。ST在一次侧和二次侧无功解耦和电压解耦方面具有优点。这为输电系统的无功补偿和配电系统的需求减少提供了灵活性。利用其通过电压调节控制需求的能力，ST提供了在保持整个负载在线的同时减少需求的可能性，这可以提供一种替代负载削减的方法。从而为提高电力系统的可靠性提供了一种手段。然而，以前的研究没有调查过st的这些潜在的系统可靠性效益。本文提出了一种方法，可以用来量化使用st作为输配电系统之间的接口对系统可靠性的影响。利用该方法，以IEEE 39总线系统为例，评估了ST对系统可靠性的影响。

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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IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society

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