直流配电电压等级影响因素与评价指标研究

发布时间：2019-03-07 16:41

【摘要】：交流配电网存在的种种问题,使直流配电的优越性引起了人们的广泛关注,提出了构建直流配电网和直流电网的设想与建议。直流配电网和直流电网作为新一代电网的革新或变革,将会引发包括直流电力设备与器具、直流导线与电缆等装备和产品制造,直流配电和直流电网的规划、建设和运行的理论与方法等一系列需要研究、解决的问题。其中,电压等级是众多研究内容的基础,但尚未发现对直流配电电压等级及其评价理论与方法的研究报道。本文首先阐述了直流配电电压等级研究的必要性,接着从社会发展、经济发展、负荷与电源、运行经济性、系统安全等多个方面分析了直流配电电压等级的内外部影响因素,得出电压等级的影响因素来源；根据部分影响因素给出了中、低压直流配电电压等级的方案；接着运用解释结构模型方法,对直流配电电压等级的影响因素进行了分层分析,明确了电压等级的直接影响因素,并得到了影响因素的影响路径,以及影响因素与电压等级的关系；在此基础上进行了直流配电电压等级的评价指标研究,分析、提出了经济性、可靠性评价内容、评价指标及评价方法；从负荷发展、电源接入、技术与设备等角度给出了直流配电电压等级适应性的评价需求和评价建议；最后给出了直流配电电压等级的综合评价流程。
[Abstract]:In this paper, the problems of the AC distribution network and the superiority of DC power distribution have been paid more attention to, and the ideas and suggestions for constructing the direct current distribution network and the direct current network are put forward. As the innovation or change of the new generation of power grid, the DC power distribution network and the direct current network will lead to a series of needs research including the equipment and products of DC power equipment and appliances, DC conductors and cables, the planning, construction and operation of DC power distribution and direct current network, etc. A problem to be solved. The voltage class is the foundation of many research contents, but it has not been found that the current distribution voltage class and its evaluation theory and method have been reported. In this paper, the necessity of the study on the level of DC distribution voltage is described, and then the internal and external influences of the DC distribution voltage class are analyzed from the aspects of social development, economic development, load and power supply, operation economy, system security, etc. In this paper, the influence factors of the voltage class are obtained. The scheme of the voltage class of the medium and low voltage direct current distribution is given according to some factors. Then, the influence factors of the voltage class of the DC power distribution are divided by means of the explanation structure model method. In this paper, the direct influence factors of the voltage class are defined, the influence path of the influence factors is obtained, and the relation between the influence factors and the voltage class is obtained. On the basis of this, the evaluation index of the DC distribution voltage class is studied and analyzed, and the economy and the reliability evaluation are put forward. The evaluation index and evaluation method of DC distribution voltage class adaptability are given from the aspects of load development, power access, technology and equipment. Finally, the comprehensive evaluation flow of DC distribution voltage class is given.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM721.1

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