【作者】 李培强；

【导师】 李欣然；

【作者基本信息】 湖南大学 ， 电力系统及其自动化， 2004， 硕士

【摘要】 在现代电力系统研究中，数字仿真计算已成为决策、规划、调度和运行的主要科学手段，而电力负荷模型是影响仿真结果精度和可信度最为重要的因素之一。本文围绕基于实际电网的综合负荷的建模理论和方法展开论述。首先介绍了电力负荷建模的基础理论知识，从负荷模型的辨识原理、结构选择和数学处理依次展开，该部分是后续内容的基础。在此基础上，论文采用统计综合法和总体测辨法相结合的建模思路，使两者即相互独立又相互配合的论述建模实践和取得的成果。统计综合法重在建立综合负荷的静态模型，总体测辨法重在建立综合负荷的动态模型。在统计综合法负荷建模中，围绕典型用户、典型行业、典型变电站三个层次，以典型用户调查资料为依据，采用模糊聚类等数学处理方法综合出典型行业和枢纽变电站的静态幂函数负荷模型参数，为统计综合法建模走向实用阶段做了有益的探索；同时对基于设备调研的感应电动机模型参数进行了统计综合分析。在典型用户调查资料的数学处理上，提出了把模糊数学的聚类分析应用于统计综合法负荷建模的观点，建模实践表明了该方法的可行性和有效性。在总体测辨法中，针对电力系统仿真计算的实际需要，重点研究了三阶感应电动机模型的数学表达和参数辨识，从动态模拟实验和基于调查实测感应电动机参数入手，进行模型参数的辨识和比较分析，尤其是对影响暂态稳定结果较大的感应电动机定子漏电抗进行了深入的讨论，提出应该对现行的定子漏电抗典型参数进行修改的结论。更多还原

【Abstract】 While people studying in modern electric power systems, a reasonable accurate representation of load is necessary for power system stability and dynamic analysis. Load modeling is one of the most important cause effecting the precision and credibility of the simulation result.The thesis studies the load modeling methods and theories based on actual electric power network. At first, it introduces the basic theory on load modeling, including identification theory how to choose model and deal with data , which is the base of the thesis. Then the thesis adopts the ways of Component-Based Modeling Approach and Measure-Based Modeling Approach for load modeling. The two ways are not only independent but also combined. A set of Systemic method of load modeling based on Component -Based is brought forward. It must investigate some representative consumers in order to make certain every industry load constitutes. After confirming industry load characteristics, it can set up bus or power sub-station load static characteristics. The modeling practice results express the rationality and validity of the method. The very crucial discussion to set up static modeling parameters according to the situation of china is done in the article. The paper discussed and brought forward the new classifyingmethod--fuzzy clustering aiming at assort of complexity and subjectivity in treating withdata, which is clear in concept and simple in calculation. The examples of Hunan province power system are classified by fuzzy clustering in the paper and the result is consistent for the engineering practice. Applications of fuzzy clustering in Component-based Modeling Approach have significant academic and application value. The basic identified principle and mathematics description of the measurement-based load modeling is discussed in the paper. A set of method and steps acquired malfunction data is proposed. The induction motor’s parameter is identified in the data of test by the Measured-based load modeling in the paper. By comparing to the calculated parameter, some significant conclusion is drawn. It has the important guidance action for power system stability and dynamic analysis.更多还原