摘要
为研究微型电源的投入对整个微电网的电压和网损的影响,采取理论分析和仿真的方法,分析了几种常见微源的特点,并建立了其潮流分析模型,处理PV节点时引入了无功电流补偿法,处理系统的拓补结构时采用了节点分层的办法.研究结果表明:经过改进的前推回推潮流计算方法适应于微电网潮流计算,微电源接入电网时,对系统电压的影响随着其与源节点之间的距离的增大而增大;对系统网损的影响,与其接入电网的位置、电源容量与节点负荷间的相对大小有关.该研究成果对微电网的规划设计有一定的参考价值和指导意义.
In order to study the impact on voltage and loss when micro sources are connected to the micro grid, this study analyzes the characteristics of several common micro sources and establishes their models in power flow calculation using the theory analysis and simulation methods. In addition, the study introduces a method of injecting reactive current to compensate for the reactive power in dealing with PV nodes, and a method of node-layer matrix in processing the topology structure. The proposed method is tested in a 33-nodes system and proved effective. The influence of micro source on the system voltage increases with the increase of distance between the node and the source node. Also, the influence of micro source on the system network loss depends on the position connected to grid, and the relative size between the capacity and node load. The study provides a useful reference and guidance for planning and designing micro grid.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2013年第2期182-185,共4页
Journal of Liaoning Technical University (Natural Science)
关键词
微电网
潮流计算
前推回代
电流补偿
节点分层
拓补结构
节点电压
网损
micro power
power flow calculation
back/forward substitution
reactive current to compensate
node-layer
topologies structure
node voltage
network loss
