关键词： Electrical engineering   Energy   Optimzation   Power Flow   Power Systems   Statistical Distributions   Synthetic Test Cases   Transmission and Distribution  

摘要： Synthetic power system test cases offer a wealth of new data for research and development purposes, as well as an avenue through which new kinds of analyses and questions can be examined. This work provides both a methodology for creating and validating synthetic test cases, as well as a few use-cases for how access to synthetic data enables otherwise impossible analysis. First, the question of how synthetic cases may be generated in an automatic manner, and how synthetic samples should be validated to assess whether they are sufficiently ``real'' is considered. Transmission and distribution levels are treated separately, due to the different nature of the two systems. Distribution systems are constructed by sampling distributions observed in a dataset from the Netherlands. For transmission systems, only first-order statistics, such as generator limits or line ratings are sampled statistically. The task of constructing an optimal power flow case from the sample sets is left to an optimization problem built on top of the optimal power flow formulation. Secondly, attention is turned to some examples where synthetic models are used to inform analysis and modeling tasks. Co-simulation of transmission and multiple distribution systems is considered, where distribution feeders are allowed to couple transmission substations. Next, a distribution power flow method is parametrized to better account for losses. Numerical values for the parametrization can be statistically supported thanks to the ability to generate thousands of feeders on command.

关键词： 电力系统分析   工程实践   教学改革  

摘要： 伴随当前能源革命的急剧变革以及国家中长期发展规划"卓越工程师"计划的实施,对电力专业学生综合素质要求和对学生工程素质的需求也在不断提高。为克服《电力系统分析》课程教学理论与实际脱节的问题,适应电力工业的发展,本文提出了基于工程实践模式的《电力系统分析》的教学改革方法及培养构思,将学校、学生、企业有机结合,构建了电力系统分析课程的工程实践培养新模式。

关键词： Electrical engineering  

摘要： The Equivalent Circuit Formulation (ECF) was found to enable robust Power System analysis by formulating Power System problems in terms of their true state variables and further applying circuit simulation methods for their robust solution. This thesis describes the theoretical background to formulate equivalent circuit problems for three different Power System analyses: AC Power Flow analysis, an optimization algorithm to identify Power Flow feasibility, and an optimization-based linear State Estimation (SE) algorithm. We further discuss the design and implementation of a prototype ECF based Power System simulator SUGAR (Simulation with Unified Grid Analyses and Renewables) in C++ that is able to solve the aforementioned analyses effectively. Furthermore, we utilize this implementation to build a framework for probabilistic Power System analyses using a Monte Carlo-based algorithm. We propose a continuation method that effectively and robustly solves Monte Carlo samples given a reference solution, which enables probabilistic Power Flow analysis on models up to continental interconnection-sized systems. In addition, we implement variable correlations within and between models, and propose a probabilistic generation control algorithm. After comparing our linear State Estimation algorithm that incorporates linear models for PMU and RTU measurements to a traditional WLS estimator, we propose a probabilistic approach to State Estimation utilizing this algorithm. We further demonstrate the feasibility of such an approach and present probabilistic SE studies including network uncertainties. Finally, we propose an approach to identify “true”-grid states by a Monte Carlo-based stochastic optimization.

关键词： Matlab   电力系统   仿真分析  

摘要： 随着部分高校向应用型高校转型,提高电气类学生理论联系的分析能力迫在眉睫。作为电气类专业主干课程,电力系统分析具有较强的理论性,概念抽象难懂。为了方便学生理解学习在课程中引入Matlab仿真软件教学是很有必要的,本文以电力系统中经典的三相短路故障为例,对其进行仿真分析,让学生可以更直观看到电压波形图的变化,加深对理论知识的印象。

关键词： 工程教育认证   电力系统分析   教学改革  

摘要： 专业认证的提出对我国的高等教育提出了新标准和要求,是促进高校教育改革的动力和提高教学质量的重要手段。本文根据工程教育专业认证标准,分析了目前专升本学生《电力系统分析》课程教学存在的不足,在以学生为中心、以产出为导向,持续改进的教育理念驱动下,从理论教学和实践教学两方面入手,构建了面向专升本学生的《电力系统分析》课程教学新模式。

关键词： 大数据   智能型   电力系统  

摘要： 随着科学技术的不断进步,大数据时代开始到来,这给电力系统的发展带来了积极的影响,电力系统可以利用大数据处理技术把工程问题数字化,利用计算机网络技术对电网内的情况进行实时的监控,保证电网的正常运行。智能型电力系统开始逐渐取代传统电力系统,为电力行业的发展做出了贡献。本文主要阐述大数据时代下智能型电力系统的相关概述,分析大数据技术对电力系统的影响,阐述大数据时代下电力系统的发展。

关键词： 新工科   电力系统分析   教学方法  

摘要： 在"新工科"积极推进建设的背景下,如何培养新时代新机遇下以传统专业与现代技术想融合的创新型卓越工程科技人才,是地方高等院校工科教育面临的一项挑战。本文以《电力系统分析》课程为例,从教学内容、教学方法与评价体系等方面探索"新工科"人才多样性培养模式,为有效提升学生学习积极性、实践能力和创新意识提供了保障。

关键词： 电力系统   分析   并行处理   应用  

摘要： 我国的电力系统具有复杂性和庞大性,而且电力在我国的生产生活都具有重要的作用,因此在对电力系统进行数据的处理时,有必要关注处理技术的时效性和高效性。在庞大的电力系统中如何提高时效性和高效性成了一个难题,在计算机信息技术飞速发展的同时,我国的电力系统和计算机系统进行有机的结合,那么将会使电力系统的分析更加高效和专业。基于此,本文主要针对电力系统的分析难题提出了并行处理的应用技术,希望能够给众多的研究者提供借鉴。

关键词： 电力系统分析综合程序   短路电流计算   实用等值   电磁暂态分析程序  

摘要： 当使用ATP-EMTP软件对大型区域电网的局部线路进行电磁暂态仿真时,受到仿真软件规模的限制,需要将区域电网划分为内部系统和外部系统,对外部系统进行等值简化。文中为简化原系统并保留原系统的短路电流特性,提出了一种基于电力系统分析综合程序(PSASP)短路计算的实用等值方法。采用该等值方法完成了西北电网2017年夏季大运行方式下的等值简化,并在ATP-EMTP软件中搭建了新疆乌鲁木齐简化电网的电磁暂态模型。通过比较等值前后系统的潮流分布和短路电流水平,验证了所提等值方法的正确性和可行性。

关键词： 微课   电力系统分析   教学模式   应用优势  

摘要： 本文阐述了微课概念,分析了微课具有知识点微化、讲授针对化、课程精品化和资源多样化等特点。针对《电力系统分析》课程理论性和实践性强,课程难度较高的特点,提出了将微课应用于"电力系统分析"课程教学中。对于微课在"电力系统分析"课程教学中的应用,设计了围绕微课开展教学的教学模式,并分析了微课应用的教学优势。