配电网投资分配决策模型研究

发布时间：2018-07-01 13:10

本文选题：配电网投资 + 刚性投资　；参考：《重庆大学》2015年硕士论文

【摘要】：配电网作为联系终端用户与发、输电系统的纽带,是保证用户安全可靠用电必不可少的环节。随着国民经济的快速发展,用户的电力需求逐年上升,供电企业及政府相关部门加大了对配电网建设的投资,如何将这笔配电网建设资金合理、有效的分配到各地区,适应地方经济发展,成为当前配电网亟待解决的课题之一。本文以提高投资效益、均衡各地区电网发展为出发点,充分考虑市场环境下配电网现状和负荷电量变化等多方面,首次系统的提出了适用于省、市供电公司对下级地区配电网投资分配决策的模型和方法,并开发了相应的配电网投资分配决策辅助软件,为供电公司的配电网投资分配决策提供参考。首先,针对配电网投资分配决策提出了各地区刚性投资、柔性投资、经济投资及配电网投资上限、下限的概念和计算方法,推导了改造比例与设备使用年限和负荷增长率的关系表达式。刚性投资为满足现状负荷、新增负荷需求及满足某些硬性要求所需的基本投资,柔性投资为省、市供电公司批复的总投资减去基本投资外的投资,经济投资为在电量、电价、内部收益率一定的情况下配电网建设所需的投资,配电网投资上限及下限用于合理的调整各地区的配电网投资。其次,提出了四种实用的涉及柔性投资的分配模型和方法,分别为按等收益率分配、按配电网刚性需求分配、按相关电量分配和综合分配,但各地区配电网投资分配要受配电网投资区间上下限的约束。然后,基于投资分配决策模型开发相应的配电网投资分配决策辅助软件。从供电企业应用的角度出发,通过简捷、灵活的界面及其功能设计,为用户提供了实用的配电网辅助决策软件。最后,以某省电力公司直属的15个市供电公司为研究对象,根据提出的配电网投资分配决策模型及算法,对各市公司过去一年的投资分配数据进行分析研究,并对其规划年的配电网投资分配提出合理的建议。实例表明了模型及算法的实用性、合理性及有效性。
[Abstract]:As a link between end users and transmission systems, distribution network is an essential link to ensure the safety and reliability of power consumption. With the rapid development of national economy, the power demand of users is rising year by year. Power supply enterprises and government departments have increased their investment in distribution network construction. How to allocate the distribution network construction funds rationally and effectively to all regions, Adapting to the development of local economy has become one of the urgent problems of distribution network. In order to improve the investment benefit, balance the development of the power grid in different regions, and consider the current situation of the distribution network and the change of the load and quantity of electricity in the market environment, this paper puts forward the system for the first time, which is suitable for the province. The model and method of the distribution network investment allocation decision in the lower level area by the municipal power supply company, and the corresponding auxiliary software for the distribution network investment distribution decision are developed, which can provide a reference for the distribution network investment allocation decision of the power supply company. First of all, the concept and calculation method of rigid investment, flexible investment, economic investment and upper and lower limit of distribution network investment are put forward for distribution network investment allocation decision. The relationship between the proportion of revamping and the service life of the equipment and the load growth rate is derived. The rigid investment is the basic investment required to meet the current load, the new load demand and some hard requirements. The flexible investment is the total investment approved by the municipal power supply company minus the basic investment, and the economic investment is the electricity quantity in place, the electricity price. The upper and lower limit of distribution network investment is used to adjust the distribution network investment reasonably. Secondly, four practical allocation models and methods involving flexible investment are put forward, which are distributed according to equal rate of return, distribution according to rigid demand of distribution network, distribution according to related electricity quantity and comprehensive distribution. However, the distribution network investment allocation is restricted by the upper and lower limits of the distribution network investment interval. Then, based on the investment distribution decision model, the corresponding distribution network investment allocation decision support software is developed. From the point of view of the application of power supply enterprises, through simple and flexible interface design and its function design, the paper provides users with practical auxiliary decision software for distribution network. Finally, taking 15 power supply companies directly under a provincial power company as the research object, according to the proposed distribution network investment allocation decision model and algorithm, this paper analyzes and studies the investment allocation data of each city company in the past year. Reasonable suggestions are put forward for the distribution network investment allocation in the planning year. Examples show the practicability, rationality and validity of the model and algorithm.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM73

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