分布式电源接入电网的定址定容问题分析
摘要由于我国经济的迅速发展而引起了一系列的需求，大力发展分布式发电技术在已经建立好的电网的基础上将会成为电力系统未来发展的必然趋势。分布 式电源（简称 DG）其特点是具有间歇性和随机性，如果其大量的接入电网将会 产生一些影响，所以对于改善分布式电源接入电网的影响，怎么合理的规划 DG 接入电网中的容量及其位置，这具有十分重要的意义。
本文中先对于分布式电源接入对配电网对配电网的网损，系统可靠性和系统 继电保护进行了分析，对配电网的网损分析建立了相对应的数学模型。然后把分 布式电源接入电网后的最小网损作为优化目标函数，在分布式电源的容量和接入 位置未知的条件下，采用粒子群算法，以 IEEE33 节点为算例进行分析。我们可 以从算例的结果中看出，配电网在接入分布式电源后取得了一定的优越性与合理 性，同时，这也证明了分布式发电技术其具有广阔的应用前景。 69950
毕业论文关键词：分布式电源 定址定容 配电网 网损 粒子群算法
Addressing the capacity problem of distributed power grid analysis
Abstract Due to the rapid development of Chinese economy and a series of demands, to develop distributed generation technology(based on the already established power grid)will become the inevitable trend of the future development of power system Distributed generation(DG)which is characterized by intermittent and random, if it’s a lot of access grid will produce some impact, so to improve the effect of distributed power grid how reasonable planning DG capacity and location, which have very important significance.
In this paper, the distributed power access to the distributed network of the distribution network loss, system reliability and system protection are analyzed, the network loss analysis of the distributed network to establish a corresponding mathematical model. Then the distributed power grid after the minimum network loss as the optimization objective function, in distributed power supply capacity and the access of an unknown location conditions, the particle swarm algorithm, to IEEE 33 bus for example analysis. We can see from the results of the calculation example, the distribution network in the access to the distributed power has made certain advantages and rationality, at the same time, it also proves that the distributed generation technology has broad applicatio n prospects.
Key Words: Distributed-generation sizing and locating distribution network grid losses PSO
摘 要
Abstract
1 绪论 1
1.1 课题的研究背景和意义 1
2 分布式电源对电网的影响 5
2.1 DG 对网损的影响 5
2.2 DG 对系统可靠性的影响 ··· 8
2.3 DG 对系统保护的影响 8
3 分布式电源接入电网的定址定容方法 · 10
3.1 两步式定址定容优化算法 10
3.2 分布式电源待定接入位置的选择 ··· 10
3.3 粒子群算法的基本理论