Reliability assessment in local power systems with renewables

2020 IEEE 7th International Conference on Energy Smart Systems (ESS) Pub Date : 2020-05-01 DOI:10.1109/ESS50319.2020.9160277

D. Derevianko, K. Hilevych

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引用次数: 1

Abstract

The use of renewable energy installations in local systems affects the reliability of power supply. At the moment, in order to assess the reliability of power supply in local systems with renewables, there is a large number of indicators that are not directly related to each other. Reliability is one of the key concepts in electricity. The reliability of the power system is a feature of the continuous supply of electricity to consumers to meet their needs. The concept of reliability includes such features as failure-free, durability and maintainability. But this terminology has not become commonplace, it has not embraced or streamlined many terms for reliability. Thus, many authors use the concepts of structural, mode (functional) and balance reliability. This separation is conditional, first, to simplify the solution of the task of assessing the reliability of complex networks, and secondly, based on quantitative assessments of the components, measures can be taken to improve the level of reliability. Changes in energy sector related to the implementation of market relations and distributed generation require an update of terminology that can be used to decompose the reliability assessment task. Because assessing the reliability of distribution grids in today's environment is quite a challenge. The purpose of the article is to analyze the reliability of power supply for local systems with renewabes. One of the main issues in this topic, despite the large amount of research work involved, is the uncertainty of the method for calculating the reliability of power supply in Microgrids. The paper assesses the reliability of power supply and proves the need to introduce new indicators for local systems with renewables, since distributed energy sources, including renewables, affects systems reliability. Such indicators will allow assessing the reliability by each factor individually, and will show the impact of each factor on the overall state of the system.

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可再生能源局部电力系统可靠性评估

在地方系统中使用可再生能源装置会影响供电的可靠性。目前，为了评估当地可再生能源系统的供电可靠性，存在大量相互之间不直接相关的指标。可靠性是电力领域的关键概念之一。电力系统的可靠性是指持续向用户供电以满足其用电需求的特征。可靠性的概念包括无故障、耐用性和可维护性等特征。但是这个术语并没有变得司空见惯，它没有包含或简化许多关于可靠性的术语。因此，许多作者使用结构、模态(功能)和平衡可靠度的概念。这种分离是有条件的，首先是为了简化复杂网络可靠性评估任务的求解，其次是在对组件进行定量评估的基础上，可以采取措施提高可靠性水平。与实施市场关系和分布式发电有关的能源部门的变化需要更新可用于分解可靠性评估任务的术语。因为在当今环境下评估配电网的可靠性是一个相当大的挑战。本文的目的是分析本地可再生能源系统的供电可靠性。尽管涉及大量的研究工作，但该课题的主要问题之一是计算微电网供电可靠性方法的不确定性。本文对电力供应的可靠性进行了评估，并证明了引入可再生能源局部系统新指标的必要性，因为包括可再生能源在内的分布式能源会影响系统的可靠性。这些指标将允许单独评估每个因素的可靠性，并将显示每个因素对系统整体状态的影响。

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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2020 IEEE 7th International Conference on Energy Smart Systems (ESS)

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