摘要随着系统负荷的快速增长，当下社会对电能质量和安全可靠性提出了更高的要求，随着分布式电源接入配电网系统容量的增加,在分布式发电技术的基础之上配电网的规划也成为了研究的热点。40558
本课题首先介绍分布式电源的背景意义与特点，其次介绍了各类分布式电源，并分析了分布式电源接入配电网后对电压、网损、电能质量、继电保护的影响。因为分布式电源的优化配置关系到电网潮流计算，因此对各类分布式电源的节点类型及处理办法进行了研究。在着重介绍了本文所采用基于前推回代法的潮流计算方法，以线损最小为目标函数，同时把节点电压约束、线路功率约束、分布式电源总安装容量约束作为三个不等式约束条件。运用改进的多目标粒子群算法对分布式电源配置模型进行求解，并以IEEE33节点配电网标准测试系统为例，对分布式电源的安装位置和容量进行优化，验证了该优化配置方法能够在一定程度上减小配网网损，还能改善节点电压质量。
毕业论文关键词 分布式电源 配电网 潮流计算 优化配置
Abstract
With the rapid growth of the system load, at present, the better quality, more safety and reliability of power supply are required.As more and more distributed generation access to network, the study of distributed network planning based on DG has become an important issue.
In the first, this paper introduces the background and characteristic of distributed generation.Secondly, the paper introduces main kinds of distributed generation, then analyses all kinds of effects on voltage, net loss, power quality and relay protection after the distributed generation accessed to distributed network. Because the allocation scheme of distributed generation relates to power flow calculation, so the node model of all kinds of the distributed generation and the method to handle was studied. It's introduced by this paper which emphasizes the forward and backward calculation using power flow calculation method, the paper makes it the optimization target that the line losses is minimum, the constraint of node voltage, line power and the total capacity of installation for distributed generation which were made as three inequality constraint condition at the same time. The distributed generation optimal allocation model is solved by using of the multi-objective particle swarm algorithm. Taking testing system of IEEE33 node distribution network as an example, after optimizing the
distributed generation installation position and capacity. The optimized allocation method is verified which can reduce the loss of the distribution network and improve the voltage quality of the node.
Keywords ： Distributed Generation Distribution Network Power Flow Allocation Optimization
目 录
摘要 I
Abstract II
1 绪论 1
1.1 课题研究背景和意义 1
1.2 分布式电源的定义及种类 1
1.2.1 分布式电源的定义 1
1.2.2 分布式电源的特点 2
1.2.3 分布式电源类型 2
1.3 分布式电源的储能装置 6
1.4 本论文研究内容 7
2 分布式电源接入对配电网的影响 8
2.1 分布式电源并网的优点 8
2.2 分布式电源并网的要求及相关标准 8
2.2.1 分布式电源接入标准 8
2.2.2 并网要求 9
2.3 分布式电源接入对配电网的影响 10
2.3.1 分布式电源接入对系统潮流和网损的影响 10 分布式电源接入优化策略研究:http://www.751com.cn/zidonghua/lunwen_38956.html