【作者】 高翔；

【导师】 罗隆福；

【作者基本信息】 湖南大学 ， 电气工程， 2016， 硕士

【摘要】 对于类型为无功问题为主的电气化铁道电力系统,就如何减小RPC的容量展开了系统而深入的研究。该文主要达到了两个目的,一方面,对新设计的RPC,减少其制造成本；另一方面,对已有RPC,通过改变控制策略,实现最小运行容量,从而降低RPC的运行损耗。具体工作内容如下：首先,系统分析了国内外治理牵引供电系统电能质量问题的几种常见的办法及其性能特点,并将并将这些办法分为系统内部治理与系统外部治理来依次介绍,其中对铁路功率调节器基本原理、特点及其现状进行研究。其次,基于对常用牵引变压器的分析对比与以无功问题为主的牵引供电系统电能质量特点的研究,通过系统地建立牵引供电系统的数学模型,提出了一种以功率因数优先并适当顾及负序的补偿方法。所提之方法建立起了RPC发出的功率与网侧PF的直接联系,清晰揭示了变流器容量、一次侧电流不平衡度与PF的关系,物理意义明确。并对该方法的性能进行全面地分析,理论上的分析表明该方法具备简单的操作性与较高的节容性。在此基础上,提出了一套简单可靠的控制方法,基本满足了大功率变流器所需要的可靠性与快速性。然后,阐述了一套用于设计RPC关键参数的方法,并设计了本文所提的基于V/v型牵引变压器的铁路供电系统补偿治理仿真模型,在模型基础上,依据两种不同的工况类型进行仿真。由仿真结果表明,在使用以功率优先的RPC补偿策略后,通过改变网侧目标功率因数PF*,实现了在使得系统电压不平衡度优化至达标的前提下,降低RPC使用容量的最终目的。这样的仿真结果表明第3章中结论的正确性与可行性。最后,对文中所述的基于V/v型牵引变压器的2x5kW级小功率铁路供电系统补偿治理原理样机的搭建,对该系统拓扑结构、系统参数,以及控制参数进行详尽地叙述,同时介绍了控制器的四个基本模块：同步模块,功率计算模块,调制模块与功率控制模块。为了对之后的实验有更加系统的指导性,本章还将RPC的操作使用流程进行了细致的说明,最后本文给出了本次实验的部分结果,论证了原理的正确性。该原理机为大功率RPC的工程应用和调试提供了很好的模拟小功率,为本文的RPC补偿方案提供了工程应用的支撑。更多还原

【Abstract】 For the type of reactive problem-based electrified railway power system, on how to make the railway power conditioner(RPC) at a lower capacity, this paper launching a expand and indepth study. This paper mainly have two purposes, on the one hand, the manufactuting of a new-designed RPC could be reduced, the other hand, by changing the control strategy to achieve the minimum operational capacity,thereby reducing the loss of running the RPC. Specific work as follows:First, the system analyzes the domestic and international governance traction power supply system power quality problems several common approaches and performance characteristics, and these methods will be divided into internal systems of governance and external governance system sequentially introduced, in which the railway power regulator to study the basic principles, characteristics and status quo.Secondly, based on analysis and comparison to reactive problem-based traction power supply system of power quality characteristics of conventional traction transformers, traction power supply system established by the mathematical model of the system, we propose a power factor of priority and with due regard to negative compensation method sequence. The proposed approach to establish a direct contact with the power to issue RPC network side PF, clear reveals the converter capacity, one-side relationship with the PF current imbalance of clear physical meaning. And the performance of this method is to conduct a comprehensive analysis, theoretical analysis shows that the method with simple operability and higher capacitive section. On this basis, we propose a simple and reliable method of control, basically meet the power converter and the required reliability and rapidity.Then, it describes a method for designing RPC key parameters, and design based on V/v traction transformer power supply system of compensation governance railway simulation model mentioned in this paper, based on the model, based on two different types of conditions simulation. The simulation results show that the use of RPC priority to power after compensation strategy, by changing the network side target power factor PF., realized in making the system voltage unbalance optimization to compliance under the premise of reducing the capacity of the ultimate goal of using RPC. Such simulation results show the correctness and feasibility of the conclusions in Chapter 3.Finally, based on V/v traction transformer 2×5kW-class low power rail power supply system of compensation governance prototype structures described herein, the system topology, system parameters, as well as detailed descriptions of the control parameters, also introduced four basic module controller:synchronization module, power calculation module, a modulation module and power control module. In order to have a more systematic after experimental guidance, this chapter will use the process RPC operations carried out a detailed description of the final part of this paper, the results of this experiment demonstrates the principle is correct. The principle of machine power engineering applications and debug RPC provides a good simulation of small power for RPC compensation scheme herein provide support engineering applications.更多还原