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Research on Evaluation of Dispersed Generations Installed in Distribution Systems

配电系统分散发电的评价研究

基本信息

批准号：
09650307
负责人：
NARA Koichi
金额：
$ 2.05万
依托单位：
IBARAKI UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650307/
关键词：
Distribution system Dispersed generators Distribution losses Power supply reliability Cost of power interruption Combinatorial optimization Tabu search Branch exchange ブランチ交換法タブ-探索

项目摘要

In this research, the followings research results are established for evaluating the effects of such dispersed generators as solar cells and fuel cells installed in distribution systems.1. Development of evaluation method for power supply reliability:A dispersed generator's strategic allocation method for enhancing power supply reliability by using DGs in a fault state is developed. In the method, the power interruption cost is used to evaluate the power supply reliability. That is, the most cost-effective allocation of the dispersed generators (DGs) is determined from both DGs installation and power supply reliability. In the solution algorithm, tabu search is employed. The tabu search is used in the outer loop of the algorithm to determine the size and location of DGs, and is used in the inner loop to determine the optimal operation of DGs for each fault case. In order to reduce the computational burden, the sensitivity of the power interruption cost or approximate calculation of the power interruption cost is also employed. The method is tested through the numerical examples by comparing with the simulated annealing method.2. Development of evaluation method for loss reductionA method for loss reduction by optimally allocating DGs in distribution system is developed which determine the optimal allocation and capacities of DGs for minimizing the distribution system loss. The algorithm is based on the tabu search as above. Further, distribution systems reconfiguration method to minimize distribution losses when DGs are installed in the demand side is developed. The algorithm is based on the branch exchange method. The developed algorithms are tested by using several system models. From these algorithms, various information is found to reduce distribution losses.The above research results are presented in such transactions and conferences proceedings as the transaction of IEE of Japan and international conferences on the relating technology.

在本研究中，建立了以下研究结果，用于评估安装在配电系统中的太阳能电池和燃料电池等分散发电机的效果。供电可靠性评估方法的发展：提出了利用分布式电源提高故障状态下供电可靠性的分散式发电机策略分配方法。该方法以停电损失作为评价供电可靠性的指标。也就是说，分散发电机（DG）的最具成本效益的分配是从DG安装和供电可靠性两方面确定的。在求解算法中，采用了禁忌搜索。禁忌搜索用于算法的外环，以确定DG的大小和位置，并用于内环，以确定每个故障情况下DG的最佳操作。为了减少计算负担，还采用了电力中断成本的灵敏度或电力中断成本的近似计算。通过数值算例对该方法进行了验证，并与模拟退火法进行了比较.配电网降损评估方法的研究提出了配电网中分布式电源的优化配置降损方法，该方法确定了配电网中分布式电源的最优配置和容量，使配电网的网损最小。该算法是基于上述禁忌搜索。此外，配电系统重构方法，以最大限度地减少配电网损耗时，DG安装在需求侧的发展。该算法基于分支交换法。所开发的算法进行了测试，通过使用几个系统模型。从这些算法中，发现了各种信息，以减少配电损失。上述研究结果在这样的交易和会议记录，如日本IEE交易和国际会议的相关技术。