新能源电力系统多时间尺度动力学特性及其暂态稳定机理研究

项目名称： 新能源电力系统多时间尺度动力学特性及其暂态稳定机理研究

项目编号： No.51477050

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 电工技术

项目作者： 薛安成

作者单位： 华北电力大学

项目金额： 75万元

中文摘要： 消纳大规模新能源是国家能源战略之一。然而，大规模新能源大量采用电力电子装置接入，改变了电力系统的数学形态，影响新能源调度消纳。电力电子装置及其控制系统在时间尺度上呈现毫秒级，并与现有电力系统的电磁暂态和机电暂态相耦合，使得新能源电力系统呈现高度复杂性，对电力系统暂态稳定机理的认识和分析方法提出了新的挑战。本项目以揭示多尺度新能源电力系统暂态稳定机理并提出相应的分析方法为目标，着重开展四方面研究工作：①新能源电力系统动态的多时间尺度建模；②多时间尺度的新能源电力系统动力学行为分析；③多时间尺度新能源电力系统模型降阶条件与方法研究；④基于多时间尺度的新能源电力系统暂态稳定机理、分类和分析方法研究。项目研究成果将拓展多时间尺度动力学分析和电力系统暂态稳定分析理论，并为接入大规模新能源的新能源电力系统运行和控制提供理论基础及分析方法。

中文关键词： 新能源发电；多时间尺度建模；动力学特性；电力系统；暂态稳定机理

英文摘要： Absorbing large-scale renewable energy source is one of the key aspects in the new energy strategy in China. However, the interconnection of large-scale renewable energy power generators, the large number of which are controlled by power electronics devices, has deeply changed the mathematical morphology of the power system and affected the scheduling and absorbing of renewable energy source. The power electronic devices and their control systems present a sub-millisecond dynamic characteristics on time scale, which is greatly different from that of electromagnetic transient and electromechanical transient. And the difference intensifies the complexity of power system, which presents a new challenge to understand and analyze the stability mechanism of power system. The project focuses on revealing the multi-time scale dynamic characteristics and transient stability mechanism of power system with massive renewable energy source, and proposing appropriate analysis methods. The following four aspects are going to be done for the power system with massive renewable energy source. First, study the multi-time scale modelling of the power system with massive renewable energy source. Second, analyze the dynamic behaviour and characteristics of the multi-time scale power system. Third, study the order-reduction conditions and methods of the multi-time scale power system. Fourth, study the stability mechanism and classification, and propose appropriate analytical methods for the multi-time scale power system. The research results will strengthen the understanding of the multi-time scale characteristics and transient stability of power system, expand the transient stability theory and analysis methods for power system, and provide a theoretical basis for the operation and control of power system with massive renewable energy.

英文关键词： Renewable Energy Source;Multi-time Scale Modelling;Dynamic Characteristics;Model Reduction;Mechanism of Transient Stability