基于功率键合图的风力发电系统建模  

Wind Power Generation System Modeling Based on Power Bond Graph

作　　者：郑海燕[1] 解秀勋 么艳香 ZHENG Haiyan;XIE Xiuxun;YAO Yanxiang(Weifang University of Science ＆ Technology,Shouguang,Shandong 262700,China;Shijiazhuang Kelin Electric Co Ltd.,Shijiazhuang,Hebei 050200,China;China Agriculture University,Beijing 100083,China)

机构地区：[1]潍坊科技学院,山东寿光262700 [2]石家庄科林电气股份有限公司,河北石家庄050200 [3]中国农业大学,北京100083

出　　处：《广东电力》2018年第9期77-82,共6页Guangdong Electric Power

基　　金：山东省软科学研究计划项目(2016RKA07014)

摘　　要：为了建立风力发电系统并网统一模型,表征风力发电系统的物理结构,以功率键合图建模理论为基础,建立风力发电系统的功率键合图全局模型。首先,简单介绍了功率键合图的状态变量、标准元件和功率键等基本概念。然后,建立风力发电系统的功率键合图全局模型,包括空气动力系统模型、机械传动系统模型、发电机模型、功率变换器模型和电网模型。最后,基于20-sim仿真平台,结合风力发电系统的实际参数,在假设风速输入下,验证该模型可如实描述风力发电系统的动态特性。在实际风速输入情况下,将模型的输出功率、转矩与实际风力发电系统输出功率、转矩进行对比,进一步验证了模型的正确性和适用性。To build the unified model for wind power generation system grid-connection and represent physical structure of the wind power generation system, this paper takes power bond graph modeling theory as the basis to build a global power bond graph model for the wind power generation system. Firstly, it introduces basic concepts such as state variables, standard elements, power bonds and so on, then builds the global power bond graph including the aerodynamic system model, the mechanical gearing system model, the generator model, the power converter model and the power grid model. Finally, on the basis of 20-sim simulation platform and according to actual parameters, it verifies feasibility of this global model in accurately describing dynamic characteristics of the wind power generation system under the supposed wind speed. Moreover, under the actual wind speed, it compares output power and torque of the model with output power and torque of the actual power generation system, and verifies accuracy and applicability of the model.

关 键 词：风力发电系统 功率键合图 模型 假设风速 实际风速 20-SIM 

分 类 号：TN614[电子电信—电路与系统]