大量分布式电源接入对地区电网的影响分析

发布时间：2018-03-22 01:07

本文选题：分布式电源　切入点：配电网　出处：《华北电力大学》2017年硕士论文　论文类型：学位论文

【摘要】：大电网与分布式发电技术相结合将是电力系统未来发展的趋势,它不仅满足经济高速发展的需求,也符合我国可持续发展的战略。分布式电源的应用能够降低用户费用、改善电能质量、供电更加灵活、提高供电的可靠性和可持续性的众多优点,分布式电源能够与传统配电网相互补充、取优补短,是综合利用清洁能源、为负荷提供可靠供电和稳定电压的最佳选择。分布式电源的发展规模越来越大,它对地区电网的节点电压、线路潮流和配网规划都带来了巨大影响。并且分布式电源不同配置方式对配网的影响程度不同,分布式电源的安装位置和安装容量等必须慎重选择,以使分布式电源对地区电网的影响降到最低。分布式电源的接入改变了地区电网络原有的网架结构,对地区电网络的潮流有极大影响。并且分布式电源的接入对地区电网未来的规划带来了实质性的影响,网络规划不得不考虑分布式电源的因素。分析分布式电源的接入对地区电网络各个方面的影响,是进行分布式电源接入地区电网研究的前提,因此本文的研究具有一定的现实意义。本文首先对分布式电源进行了详细介绍,对不同种类的分布式电源的发电方式、发电特性以及目前发展状况进行了深入研究。而后从理论上详细分析了分布式电源的接入会对原有电网带了哪些影响,尤其是对分布式电源接入对配网的节点电压和网络损耗进行了详细分析。之后结合沈阳地区电网,对分布式电源接入地区电网产生的影响做了详尽的仿真分析,对不同接入位置、不同接入容量和不同运行功率因数的分布式电源对地区电网节点电压和网络损耗的影响,通过仿真用数据予以说明。在最后提出了一种基于网损精确计算公式,而推导出的分布式电源最优配置方法,通过此方法能够计算出地区电网接入分布式电源的最佳接入位置、接入容量和最优运行功率因数。
[Abstract]:With the large power grid and distributed generation technology will be the future development trend of electric power system, it not only meets the demand of the rapid economic development, but also conforms to China's sustainable development strategy. The application of distributed power supply can reduce user costs, improve the quality of power supply, more flexible and improve the reliability of power supply has many advantages and sustainability. Distributed power supply can complement each other with the traditional distribution network, the advantages and weaknesses, is the comprehensive utilization of clean energy, to provide the best choice of reliable power supply and stable voltage for load. More and more large scale distributed power development, it is the regional power grid node voltage, power flow and distribution network planning has brought great influence. And the degree of distributed power supply different effects on different configuration of distribution network, distributed power installation location and installation capacity must be carefully chosen, in order to make the distributed power on Influence of the regional power grid to a minimum. DG changed area electrical network original grid structure has a great impact on regional electric network trend. And DG brings a substantial impact on the future of the regional power grid planning, network planning to consider the factors affecting access analysis of distributed power. Distributed power of electric network in various aspects, is the precondition for the research on distributed power grid access area, so this study has a certain practical significance. This paper makes a detailed introduction of the distributed power generation mode, the different kinds of the distributed power, in-depth research on power generation characteristics and the current development situation and then. In theory a detailed analysis of the DG which will take effect on the original grid, especially for distributed power The node voltage and network loss of distribution network are analyzed in detail. After considering the impact on the Shenyang power grid, grid distributed power access area to do a detailed analysis of the simulation of different access location, influence of distributed power supply different access capacity and different operating power factor of power grid node voltage and network loss through the simulation, the data will be explained. At last this paper proposes a precise calculation formula based on distributed power network loss, optimal allocation method is derived, the method can be used to calculate the regional power grid connected into the best access location of the distributed power supply, access capacity and optimal operation of power factor.

【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】：TM61;TM732

【参考文献】