220kV变电站项目选址综合评价研究

发布时间：2018-11-16 21:40

【摘要】：近年来,随着社会经济的不断发展,社会对电力能源需求不断增多,为保障居民、企业生产、生活所需,电网的规划建设不断增多,关于电网规划的研究也是日趋完善,在电网建设的各个阶段、各个部分都有研究的成果。变电站作为电网系统重要的组成部分之一,其建设的合理、科学性将对整个电网的长远规划、投资收益以及对于供电质量的保障都起到重要的作用。变电站选址研究的目的,就是结合众多的站址选择影响因素,全面、科学的对各备选站址进行分析评价,实现方案选址的优化。首先,本论文通过对变电站选址的目的和重要性进行总结、分析,确定其在整个电网系统中的重要地位;然后分析变电站站址选择时有众多的影响因素的特点及选址时的原则,结合大连市长兴岛及九成重工电力负荷实际状况,说明变电站建设的必要性。文章主要从网架构建、经济效益、环境因素、社会影响、施工便利条件五个方面作为准则层,包括线路走廊、负荷中心的距离、建设总投资、水文气象、工程地质、政府、居民的态度及土石方工程量等十七个具体的影响因素进行分析,判断其对目标层的影响,对变电站站址选址问题建立评价指标体系,综合、全面的考虑影响因素,并采用以层次分析法为基础,将变电站选址从众多的影响因素的多目标决策问题转化成层次清晰的层次分析法优化问题。同时结合灰色关联分析法,通过组合赋权的方法对指标的权重进行修正,使得权重能够更好的表现指标的重要性和影响程度,是站址的确定更具有说服力,并在实际工程中得到验证。
[Abstract]:In recent years, with the continuous development of social economy, the demand for power energy is increasing. In order to ensure the residents, enterprise production, life needs, the planning and construction of power grid is increasing, and the research on power network planning is becoming more and more perfect. In each stage of power grid construction, there are research results in each part. Substation is one of the important parts of power network system. The reasonable and scientific construction of substation will play an important role in the long-term planning of the whole power network, investment income and the guarantee of power supply quality. The purpose of substation site selection research is to comprehensively and scientifically analyze and evaluate each alternative site in order to realize the optimization of the scheme location by combining with many influencing factors of site selection. Firstly, the purpose and importance of substation location are summarized and analyzed to determine its important position in the whole power system. Then it analyzes the characteristics of many influencing factors and the principle of location selection in substation site selection, and explains the necessity of substation construction combined with the actual situation of Changxing Island and 90% heavy industry power load in Dalian. This paper mainly from the grid construction, economic benefits, environmental factors, social impact, construction facilities as five layers, including line corridors, load center distance, total investment in construction, hydrometeorology, engineering geology, government, Based on the analysis of 17 specific influencing factors, such as the attitude of the residents and the quantity of earthwork and rock works, to judge the influence on the target layer, to establish an evaluation index system for the problem of the location of the substation site, and to consider the influencing factors comprehensively and comprehensively. Based on Analytic hierarchy process (AHP), the problem of substation location selection is transformed from multi-objective decision making problem with many factors to a hierarchical analytic hierarchy process (AHP) optimization problem. At the same time, combined with the grey relational analysis method, the weight of the index is modified by the method of combination weight, which makes the weight better to express the importance and influence degree of the index, so it is more persuasive to determine the station address. It is verified in the actual project.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM63

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