摘要
针对分布式电源DG接入配电网将影响系统电压的问题,提出了DG的戴维南等效模型接入配电网方法。通过对风力发电机及光伏电源工作原理的研究,利用戴维南定理求取分布式电源在潮流计算中的模型,并接入配电网,采用PQ分解法计算含DG的配电网潮流,分析其对系统电压稳定性的影响。计算结果表明:当配电网系统接入分布式电源时,系统的电压会增加,增加的大小与接入节点的位置、DG的容量和类型有关。
There is a great impact on voltage when DG （Distributed Generation） is connected to distri- bution network. A method in which a Thevenin model of DG is connected to distribution network is pre- sented. Through research of the operating principle of wind generators and photovoltaic power, a Thevenin model of distributed generations is built by Thevenin＇s theorem, and connected to distribution network. The P-Q method is adopted to calculate power flow of distribution grid with DG. The voltage stability of distribution network is studied. The calculation results show that the system voltage will in- crease when DG is connected to distribution network. The amount of increase of voltage is related to the position of accessing node, the capacity of DG and the type of DG.
出处
《可再生能源》
CAS
北大核心
2014年第4期424-428,共5页
Renewable Energy Resources
基金
国家自然科学基金(51177165)
新疆维吾尔自治区高等学校科研计划项目(XJEDU2012I15)
新疆农业大学前期资助课题资助(XJAU201121)
