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Design and Management Support System for Promoting the Local Distributed Energy Resources

促进地方分布式能源发展的设计与管理支撑系统

基本信息

批准号：
17560535
负责人：
GAO Weijun
金额：
$ 2.29万
依托单位：
The University of Kitakyushu
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17560535/
关键词：
Distributed energy resource Database Energy conservation Design tool Energy source Tool development Design Maintenance 構築開発

项目摘要

As we know, our society is going into the management-age from manufacturing-age today. And it is necessary to develop a new assessment method, which uses life cycle thinking by adding a long-term social value, life cycle value, to a modem economic value. However, up to now, it is insufficient to solve the above described issue by the development of a soft technology.On the other hand, with the improvement of the concerns on environmental protection and energy-saving, energy utilization methods with energy-saving and low CO2 emissions have got more and more attention. Under such a background, a small-scale distributed power generation system is being continuously introduced in a building or a region on-site where energy is needed. In the system introduced, though each individual equipments has one high energy utilization efficiency, when the entire energy supply system is considered, the effect of energy-saving, economy and environmental protection is not necessarily high. This is becau … More se the following factors: there is not supporting system in design stage; the decision process of an initial investment is unclear considering the life cycle value; the demand site is not considered during the equipment's running.In this research, a model for structural and operational optimization of DER system is presented. In the model, production and consumption of electrical power and heat, storage of heat are taken into account. The problem is formulated as a mixed integer linear programming (MILP) where the objective is to minimize the overall cost of DER system, i.e. the sum of running cost, the annualized investment cost, and so on. The branch and bound (B & B)algorithm is employed to solve the MILP problem because it can save a lot of computation time by eliminating unnecessary cases among every possible combination. Furthermore, this algorithm is efficient in the computer simulation for the case involving the presence of various constraints in the performance for the components.In addition, an illustrative example of DER is presented. We analyzed the effects of fuel price and equipment efficiency on the operation time, running cost and energy saving in Japan. The increase of electricity price and decrease of gas price will increase the attractiveness of distributed energy resource. According to the load function of the system, the energy-saving, environmental improvement will have a maximum value at its optimal operating time. Compared with heat recovery efficiency, power generation efficiency has more influence on the energy saving and CO2 reduction when the total efficiency of system is fixed.Furthermore, an investigation was conducted of economically optimal CHP investment for a prototypical residential building. A sensitivity analysis was elaborated in order to show how the optimal solutions would vary due to changes of some key parameters. In addition, as a main component of residential CUP system, the optimal size of the storage tank was analyzed. Less

众所周知，当今社会正从制造时代进入管理时代。有必要发展一种新的评估方法，运用生命周期的思维，在现代经济价值的基础上加上长期的社会价值、生命周期价值。然而，到目前为止，仅靠软技术的发展不足以解决上述问题。另一方面，随着人们对环保和节能关注的提高，节能、低CO2排放的能源利用方法越来越受到关注。在这样的背景下，小型分布式发电系统不断被引入到需要能源的建筑物或现场区域。在介绍的系统中，虽然每一个单独的设备都具有较高的能源利用效率，但当考虑到整个能源供应系统时，其节能、经济和环保的效果并不一定高。这是因为：设计阶段没有配套系统；考虑到生命周期价值，初始投资的决策过程不明确；设备运行过程中不考虑需求现场。本研究提出了分布式能源系统的结构和运行优化模型。在该模型中，考虑了电力和热量的生产和消耗以及热量的储存。该问题被表述为混合整数线性规划（MILP），其目标是最小化 DER 系统的总体成本，即运行成本、年化投资成本等的总和。分支定界（B＆B）算法被用来解决MILP问题，因为它可以通过消除每个可能的组合中不必要的情况来节省大量的计算时间。此外，对于涉及组件性能存在各种约束的情况，该算法在计算机模拟中是有效的。此外，还给出了 DER 的说明性示例。我们分析了日本的燃料价格和设备效率对运行时间、运行成本和节能的影响。电价上涨、气价下降将增加分布式能源的吸引力。根据系统的负载功能，在其最佳运行时间，节能、环境改善效果将达到最大值。当系统总效率固定时，与热回收效率相比，发电效率对节能和二氧化碳减排的影响更大。此外，对典型住宅建筑的经济最优热电联产投资进行了研究。详细阐述了敏感性分析，以显示最佳解决方案如何因某些关键参数的变化而变化。此外，作为住宅CUP系统的主要组成部分，对储罐的最佳尺寸进行了分析。较少的