目前比较成熟的直流牵引供电仿真分析软件是有卡耐基-梅隆大学的EMM(Transportation Systems Energy Management Model)、ELBAS 针对城轨供电仿真的SINANET等。其中,EMM的主体包括两个部分:其一是TPS(Train Performance Simulator,即列车运行仿真),是指在额定电压下,推导单一列车从起点到终点的运行情况,主要参数是取流、能耗相对于时间、位置等的变化情况。NES(Electric Network Simulator,即电网络仿真),以TPS的输出运行情况的结果作为输入,配合列车运行时刻表,经直流负载潮流分析,求出N组列车同时在线路上运行时,线路上各指定节点电压、电流及功率的变化,以及交流侧电气网络的潮流计算。国内一些设计院和科研院所也自行开发了一些仿真分析设计软件。对于直流侧的牵引供电系统计算的方法主要有平均运量法和列车运行图截面法。最近几年在列车运行图截面法基础上又有学者提出了一
随着电能生产规模日益扩大,国民经济总消耗中的能源消耗所占比例逐渐增大。对电网进行网损计算和降损决策分析,实施合理的降损措施,减小电网的能量损耗,成为电力网经济运行的重要途径。
论文介绍了目前网损计算和降损措施分析的国内外现状,对配电网的网损的理论计算进行了较为系统的研究,研究了按功率负荷曲线计算网损的方法,编写C++程序,结合算例进行计算和分析。在此基础上研究了牛顿拉夫逊法潮流计算,并基于MATLAB编写程序,结合算例计算网损。另外,论文研究了分布式发电系统对网损的影响,通过MATLAB对算例进行了仿真和分析。最后阐述了电力网网损的节能措施,包括降低网损的技术措施和降低网损的管理措施。9539
关键词 配电网 网损计算 潮流计算 分布式发电系统 降损措施
毕业设计说明书(论文)外文摘要
Title The calculation and analysis of power distribution network loss
Abstract
With the increasing size of energy production, energy consumption proportion in the total consumption of the national economy is gradually increasing. To reduce the energy loss of the grid, calculation of network losses and implementation of reasonable loss reduction measures become an important way for economic operation of the power grid.
Paper introduces the current net loss calculation and drop damage measures analysis of domestic and international status quo, the distribution network net loss of theoretical calculation carried out a systematic study. To study the power load curve, the calculation of net loss of writing C++ program, combined with examples are calculated and analyzed. On this basis, paper introduces Newton Raphson power flow calculation combined with the example calculation of loss. In addition, the paper studies the impact of distributed generation systems loss based on MATLAB simulation and analysis. Finally paper expounds the power network loss energy-saving measures, including reducing the net loss of the technical measures and management measures of reducing line loss.
Keywords Distribution network; loss calculation of the flow calculation; Distributed Power Generation System; Loss Reduction Measures;
目 录
1 绪论 1
1.1 配电网网损计算与降损的意义 1
1.2 国内外研究现状及分析 2
1.3 论文的主要工作 4
2 网损计算的一般方法 5
2.1 损失因数法 5 MATLAB配电网网损的计算和分析仿真(2):http://www.751com.cn/zidonghua/lunwen_8297.html