Accurate computation of power system transients

电力系统瞬变的精确计算

• 批准号: RGPIN-2015-06382
• 负责人: Mahseredjian, Jean
• 金额: $ 2.7万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=658471
• 关键词: Accurate; computation; power; system; transients

This project is for conducting research on the accurate computation (simulation) of power system transients. The targeted field of research is the computation of electromagnetic transients (EMT) using circuit based models of power systems. The simulation and analysis of EMTs is crucial to the operation of an efficient, reliable and environmentally friendly power system. The EMT simulation tools are used for the determination of component ratings such as insulation levels and energy absorption capabilities, in the design and optimization process, for testing control and protection systems and for analyzing power systems in general.****The findings of this project will impact on the accuracy of EMT-type computation methods. Two main aspects are investigated.*******On the first aspect it is proposed to increase the accuracy in the computation of initial conditions. Such conditions establish the steady-state operating point of a power system before performing transient analysis. Although steady-state initialization methods are currently available, it is proposed to develop new techniques capable to account more accurately for harmonics, control systems and various power electronics based devices. It is also proposed to study methods for finding more than one steady-state solution in the presence of nonlinearities. This research will allow to reduce engineering efforts and delays, and significantly improve simulation capabilities for complex problems, such as geomagnetic disturbances and integration of wind generation.*******On the second aspect, it is proposed to conduct research on accuracy problems related to interfacing of electrical network equations with control block diagrams, generic mathematical tools, and external models. Currently, such interfacing is typically based on approximations that often result into errors and/or require increased computing timings. In addition to modeling accuracy and flexibility, this research will have an important impact on modeling portability problems between EMT-type applications. This research will contribute methods that will allow accurate open-source and black-box model exchange among different simulation platforms and will facilitate engineering work flow. The proposed research on open-source modeling will lead to standardization and deliver important means for maintaining modeling consistency to research and industry.*******This research program will impact on Canadian power system utilities by delivering computational techniques capable of solving analysis problems that cannot be solved today. Canada is also a world leader in the development and supply of advanced simulation tools for power systems and this research will contribute new numerical methods that can be advantageously used by related software development companies.***

本课题是对电力系统暂态的精确计算（仿真）进行研究。目标研究领域是利用基于电路的电力系统模型计算电磁瞬变（EMT）。emt的仿真与分析对于高效、可靠、环保的电力系统的运行至关重要。在设计和优化过程中，EMT仿真工具用于确定组件等级，例如绝缘等级和能量吸收能力，用于测试控制和保护系统以及一般的电力系统分析。****该项目的研究结果将影响emt类型计算方法的准确性。主要研究了两个方面。*******在第一方面，提出了提高初始条件计算精度的方法。在进行暂态分析之前，这些条件确定了电力系统的稳态工作点。虽然稳态初始化方法目前可用，但建议开发能够更准确地解释谐波，控制系统和各种基于电力电子设备的新技术。本文还提出了在存在非线性的情况下寻找多个稳态解的方法。这项研究将减少工程工作量和延迟，并显著提高复杂问题的模拟能力，如地磁干扰和风力发电的集成。*******在第二方面，建议研究与控制方框图、通用数学工具和外部模型的电气网络方程接口相关的精度问题。目前，这种接口通常是基于近似值的，通常会导致错误和/或需要增加计算时间。除了建模的准确性和灵活性外，本研究还将对emt类型应用之间的建模可移植性问题产生重要影响。这项研究将有助于在不同的仿真平台之间进行准确的开源和黑盒模型交换，并将促进工程工作流程。提出的开源建模研究将导致标准化，并为研究和行业提供保持建模一致性的重要手段。*******该研究计划将通过提供能够解决当今无法解决的分析问题的计算技术，对加拿大电力系统公用事业产生影响。加拿大在电力系统先进仿真工具的开发和供应方面也处于世界领先地位，这项研究将有助于相关软件开发公司有利地使用新的数值方法