毕业设计说明书(论文)电力系统电压崩溃实验研究Undergraduate Design(Thesis)Experimental Study of Voltage Collapse in Power SystemBYSunChongFengSupervised byAssociate Professor LI ShengSchool of Electric Power EngineeringNanjing Institute of TechnologyJune 2012I摘要摘要这项研究涉本文介绍了以单负荷无穷大系统为研究的原始数据，对系统电压崩溃实验进行研究。及到电压崩溃点的确定和单负荷无穷大系统仿真模型的确定，因此较为复杂。为了将论文所研究问题化繁为简，以下将研究过程分为几个步骤：（1）学习并熟悉电力系统电压稳定性的基本概念。 （2）学习并探讨电力系统电压崩溃的产生机理。 （3）研究单负荷无穷大系统电压崩溃的产生机理，推导负荷为恒定功率类型时的相应的数学公式，找出电压崩溃点。 （4）运用ETAP软件建立单负荷无穷大系统仿真模型，研究不同负荷特性（恒定功率、恒定阻抗类型负荷及感应电动机）对系统电压稳定性的影响。 （5）在电压稳定教学试验验装置上进行电压崩溃物理仿真试验，考察不同特性负荷（日光灯、感应电动机等）对系统电压稳定性的影响。通过ETAP PowerStation电力系统综合分析计算软件来对电压稳定性进行了仿真分析。电压稳定性仿真分析中采用了单负荷-无穷大这一典型系统，并选取了恒阻抗负荷及感应电动机负荷进行仿真。根据P-V曲线，当负荷侧母线有功功率增大到一定值时，再增加有功功率时，电压会崩溃，母线上的有功功率会随着电压下降而下降，从而早出电压崩溃点，研究电压崩溃。关键词 电压稳定，负荷特性，电压崩溃，单负荷无穷大系统，恒阻抗负荷IIAbstractThe study involved This article describes the raw data, a single load - infinite bus system for the study on the collapse of the system voltage experiments. To voltage collapse point to determine a single load - infinite bus system simulation model to determine more complex. Simplify your paper to research questions, following the research process is divided into several steps: (1) learn and become familiar with the basic concept of the power system voltage stability. (2) to learn and to explore the mechanism of the power system voltage collapse. (3) of single load - infinite bus system voltage collapse mechanism of the derivation of the load is constant power type of mathematical formula to identify the voltage collapse point. (4) using ETAP software to create a single load - infinite bus system simulation model to study the characteristics of different loads (constant power, constant impedance type of load and induction motor) and the impact on system voltage stability. (5) in the voltage collapse voltage stability teaching test inspection device physical simulation experiments to study the different characteristics of the load (fluorescent, induction motor, etc.) on the system voltage stability. ETAP PowerStation power system analysis computing software simulation analysis of voltage stability. The simulation analysis of voltage stability using a single load - typical infinite system, and select a constant impedance load and induction motor load simulation. PV curve when the load side bus active power increases to a certain value, then increase the active power, voltage collapse, the active power bus voltage drops down, which as early as the voltage collapse point to study the voltage collapse.Key words voltage stability, load characteristics, voltage collapse, single load - infinite system, constant impedance load.III目录目录摘要摘要.IAbstract.II1 1 绪论绪论.11.1 引言.11.2 研究电压崩溃实验的意义.11.3 本文的主要工作.22 2 电力系统电压稳定性电力系统电压稳定性.42.1 引言.42.2 电压稳定性的基本概念.42.3 电压稳定性机理的认识.52.4 电压稳定性的研究方法.72.5 本章小结.93 电力系统电压崩溃产生的机理电力系统电压崩溃产生的机理.103.1 引言.103.2 电压崩溃的基本概念.103.3 电压崩溃机理的研究现状.113.4 单负荷无穷大系统电压崩溃的机理.133.5 本章小结.154 4 不同负荷特性在不同负荷特性在 ETAPETAP 软件上研究电压稳定软件上研究电压稳定.164.1 引言.