大规模海上风电场电磁暂态受控源解耦加速模型  

Electromagnetic Transient Controlled Source Based Decoupling Acceleration Model for Large-scale Offshore Wind Farm

作　　者：邹明 王焱 许建中 赵成勇 ZOU Ming;WANG Yan;XU Jianzhong;ZHAO Chengyong(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University),Beijing 102206,China)

机构地区：[1]新能源电力系统全国重点实验室(华北电力大学),北京市102206

出　　处：《电力系统自动化》2024年第2期1-8,共8页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(52277094);中国华能集团有限公司总部科技项目(HNKJ20-H88)。

摘　　要：随着风电装机容量及占比越来越大,大规模风电场电磁暂态仿真速度极慢的问题愈加凸显。针对现有建模方法复杂、无法反映风电场内部特性、灵活性不足等问题,提出一种大规模海上风电场电磁暂态受控源解耦加速模型。该方法通过受控源传递端口间电压和电流信息,实现风电机组内部元件之间以及不同风电机组之间端口的解耦,从而将系统解算过程中高阶矩阵分解为多个小矩阵以实现快速仿真。基于节点分析法和基尔霍夫定律证明了该方法的有效性。所提出的受控源解耦加速模型建模方法简单,通过仿真软件中现有模块拖拽即可搭建,可以准确仿真风电场的各种暂稳态工况,并且提速效果明显。同时,所提受控源解耦加速模型可与现有文献所提方法互补,扩展其灵活性。最后,在PSCAD/EMTDC中搭建了不同机组数量的风电场模型,验证了受控源解耦加速模型的仿真精度及加速效果。结果表明,所提受控源解耦加速模型可实现1~2个数量级的加速效果,且相比详细模型具有较高的仿真精度。With the increase of installed capacity and proportion of wind power,the problem of extremely slow electromagnetic transient simulation speed of large-scale wind farms is becoming more and more prominent.In view of the complexity of the existing modeling methods,the inability to reflect internal characteristics of the wind farm,and the lack of flexibility,this paper proposes an electromagnetic transient controlled source based decoupling acceleration model(CS-DAM)for the large-scale offshore wind farm.This method realizes the decoupling between the internal components of the wind turbine(WT)and the ports between different WTs by transmitting the voltage and current information between the ports through the controlled source,so that the highorder matrix in the system solution process is decomposed into multiple small matrices to achieve simulation acceleration.The effectiveness of the method is proved based on the node analysis method and Kirchhoff’s law.The proposed modeling method of CS-DAM,which can build a model by dragging existing modules in the simulation software,is simple.The CS-DAM can accurately simulate various transient and steady-state conditions of the wind farm,and the acceleration effect is obvious.Meanwhile,the proposed CS-DAM can complement the methods proposed in the existing literature and expand their flexibility.Finally,wind farm models with different numbers of WTs are built in PSCAD/EMTDC to verify the simulation accuracy and acceleration effect of the CS-DAM.The results show that the proposed CS-DAM can achieve acceleration effects of 1~2 orders of magnitude,and has higher simulation accuracy compared to the detailed model.

关 键 词：海上风电场 风电机组 电磁暂态仿真 受控源解耦加速模型 等效建模 

分 类 号：TM614[电气工程—电力系统及自动化]