【作者】 周杰；

【导师】 黄小庆；

【作者基本信息】 湖南大学 ， 电气工程， 2015， 硕士

【摘要】 随着人类社会的不断发展,煤炭、石油等能源需求日渐攀升;而这些传统能源的大量消费,会导致大气污染,水污染等各种环境问题。分布式电源的出现,将各种可再生能源很大程度上替代了传统能源,并就地转化成电能提供给社会终端用户,从而根本上有效缓和了发展与环境的矛盾。微电网将可再生能源与用户有机联系成一个整体,是目前学术界研究的重点。而近年来,将多个微电网有机联系成、可以使子微电网互相支撑的微网群逐渐成为微电网未来发展的趋势。建设微网群之前需要科学、合理的规划设计方案。如何评价以及对设计方提供的各种规划方案进行排序是本文的核心研究内容。本文综合研究了微电网系统的可靠性、经济效益、节能减排、电网友好性、方案适应性及系统协调运行等方面水平的评价指标。针对微网群指标体系中指标的不同特点,对每个指标进行定义说明及计算方法的研究。根据指标的含义,对电能质量、可靠性、经济性、环保性以及协调性进行深入研究,构成二级或三级指标体系,并对各级指标的含义及定量计算进行了深入研究。深入研究了适合多层评价指标体系的层次分析法原理及其发展,并对衍生出的含层次分析法的数据包络分析法,基于三角模糊数理论的层次分析法进行详细探讨;比较了各方法的优缺点,确定最适合于微网群综合评价的评价方法。针对不同的评价算法,在详细对比各方法原理概念的基础上,选定基于三角模糊数的层次分析法评价微网群规划方案,将权重求取问题转化了一个带约束的优化问题。并引入了更加高效求解的混合大爆炸方法来解决此优化问题。本文重要的创新点是对基于三角模糊数理论的层次分析法不足之处进行了修正,并用改进的算法进行算例分析,结果表明此方法得出的评价结果更加科学合理。最后,利用建立的微网群评价指标体系以及评价模型对广西某微网群示范工程中备选的三个方案进行了详细地评价,对微网群规划综合评价工作进行深入分析,验证了本文所建立评价指标体系和综合评价模型的有效性与可行性,能为以后的微网群规划工作提供决策依据,对于实际工程问题具有很好的实践意义。更多还原

【Abstract】 With the continuous development of human society, coal, oil and other energy needs are growing fast.But the huge consumption of those traditional energy will lead to air pollution, water pollution and other environment problems. Because of the emergence of distributed power supply, the various renewable energy largely have replaced the traditional energy,and have been changed into electric power to meet the social end users without Long distance transmission, easing effectively the contradiction between development and the environment. Microgrid connects the renewable energy and users as a whole, being a focus of current academic research. In recent years, it is a future trend of microgrid that making multiple microgrids into a whole as multi-microgrid where every microgrid could be able to support each other.Based on the Domestic and foreign research on multi-microgrid and the evaluation system research on traditional large grid, the comprehensive evaluation index system of micro network group was established in this paper with studying deeply the evaluation index of reliability, economic benefits, energy-saving and emission-reduction, grid-friendly, adaptability of schemes and system coordination and so on. According to the different characteristics of indicators in the index system of multi-microgrid, each index was defined in detail description. Thus scientific and complete multilevel evaluation index system for multi-microgrid plan include of power quality, reliability, economy, environmental protecting and coordination was built in this paper. The paper also further investigated AHP principle and development which is suitable for multi-level evaluation index system and correlative DEAHP, TFN-AHP, and then compared the advantages and disadvantages of each method above, determining the most suitable evaluation method for multi-microgrid plan. In the light of different evaluation algorithms, the TFN-AHP was employed to evaluate the multi-microgrid plan based on the intensive comparison among different methods, transforming the problem of calculating the weight into a constrained optimization problem. And the efficient and reliable HBBBC algorithm was used to solve the problem. On the basis of those work, the TFN-AHP was corrected and improved into a new algorithm called OTFN-AHP. The effectiveness of the proposed method was verified by the analysis of calculation examples.In this paper, three options of a multi-microgrid demonstration project in Guangxi were evaluated in detail using the built evaluation system and model. The in-depth analysis of the comprehensive evaluation for multi-microgrid planning verified the validity and feasibility of the established evaluation index system and comprehensive evaluation model which was able to provide basis for decision making of multi-microgrid planning in the future and of practical significance for the practical engineering problems.更多还原