摘要
利用具有图形化界面的PSCAD/EMTDC软件,建立了基于蒙特卡洛法的配网随机潮流的仿真模型。利用PSCAD软件中随机数产生模块和数学计算元件构成累积分布反函数模块,产生按照某种特定分布的随机数,称为"伪随机数"。同时,利用PI环节控制电源的功角,使之跟踪输出伪随机数模块生成的随机功率。该模型能模拟各种概率分布的随机电源,仿真复杂拓扑结构的配电网潮流,并满足快速计算要求。IEEE9节点系统的仿真统计结果,证明了仿真模型的正确性。
This paper presents a simulation model of probabilistic power flow in smart distribution network by means of PSCAD/EMTDC graphical interface software based on the Monte-Carlo method. The random injected power of DGs is simulated by random number generator and mathematical calculation elements of PSCAD software. The in- verse of cumulative distribution function module is constructed, and the random number according to a particular distribution is generated, which is call＂ pseudo-random number＂. The PI module is used to control the actual injec- ted power following the random power value by controlling the phase angle difference between the source and bus. The statistics results associated with the single-generator-to-infinite system as well as IEEE 9-nodes system show that the model established in this paper is correct. The module can simulate stochastic power resources of arbitrariness probability distributing in complex topological structure and meet the requirement of rapid calculation.
出处
《电子测量与仪器学报》
CSCD
北大核心
2015年第6期880-886,共7页
Journal of Electronic Measurement and Instrumentation
关键词
智能配电网
随机潮流
伪随机数
PI控制
PSCAD仿真
smart distribution grid
probabilistic power flow
pseudo random number
PI control
PSCAD simula- tion
