电力工程设计中电气主接线方案评估研究

发布时间：2019-01-30 16:16

【摘要】：根据国家经济发展和国际战略需要,我国电力设计企业参与了众多国内外电力工程项目。在电力工程设计中,电气主接线方案直接决定了工程整体技术经济性。因此设计人员评估电气主接线方案十分关键。本文基于现有研究,通过研究110kV变电工程电气主接线方案评估,给出一套适用于各类电力工程设计的电气主接线方案评估方法。首先,根据标准规范、评估方法应用环境和评估计算风格对评估方法定位:基于电气主接线设计阶段可用数据资料,分可靠性、扩建性、经济性三方面评估的简易工程计算。然后,从可靠性、扩建性、经济性三方面入手,给出一套评估方法。选择合适的设备状态模型,指出现有研究推荐的三种方法——最小割集法、网络法、蒙特卡洛法——应用于电力工程设计存在的问题,根据评估方法定位,改进传统解析法的二阶故障分析方法,给出一种可靠性评估方法。分析方案扩建性含义,提炼出扩建性评估包括扩建施工时间点评估和扩建施工停电损失电能评估,从这两个方面入手,给出一种扩建性评估方法。指出常规经济性评估方法和最小费用法存在的问题,改进最小费用法总投资计算,引入扩建施工停电损失费用计算,给出一种经济性评估方法。最后,通过算例展示整套方法的具体评估过程。
[Abstract]:According to the national economic development and the international strategic needs, the electric power design enterprises of our country have participated in many domestic and foreign electric power engineering projects. In the power engineering design, the main electrical wiring scheme directly determines the overall technical economy of the project. Therefore, it is very important for designers to evaluate the main electrical wiring scheme. Based on the existing research, this paper studies the evaluation of the main electrical wiring scheme of 110kV substation project, and presents a set of evaluation methods of the main electrical wiring scheme suitable for all kinds of electric power engineering design. First, according to the standard specification, the evaluation method applies the environment and the evaluation calculation style to the evaluation method localization: based on the electrical main wiring design stage available data, divided into three aspects of reliability, expansibility, economic evaluation of simple engineering calculation. Then, a set of evaluation method is given from three aspects of reliability, expansibility and economy. Selecting the appropriate equipment state model, pointing out the problems existing in the application of the three methods recommended by the existing research, the minimum cut set method, the network method and the Monte Carlo method, in the power engineering design, and locating them according to the evaluation method. The second order fault analysis method of traditional analytical method is improved, and a reliability evaluation method is presented. By analyzing the extensibility meaning of the scheme, the paper abstracts the extensibility evaluation including the extension construction time point evaluation and the extension construction blackout power loss evaluation. From these two aspects, a method of extension evaluation is presented. This paper points out the problems existing in the conventional economic evaluation method and the minimum cost method, improves the total investment calculation of the minimum cost method, introduces the calculation of the outage loss cost of the extension construction, and gives a economic evaluation method. Finally, the concrete evaluation process of the whole method is demonstrated by an example.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM645

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