大型风力发电机组双PI动态解耦控制策略  

Dual-PI Closed Loop Dynamic Decoupling Strategies for Large Wind Turbines

作　　者：杨娇[1] 李彬[1] 解基源[2] 王建中[3] 杨春萍[1] 唐良瑞[1] 

机构地区：[1]华北电力大学电气与电子工程学院,北京102206 [2]中北大学信息与通信工程学院,山西太原030051 [3]中北大学理学院,山西太原030051

出　　处：《中北大学学报（自然科学版）》2013年第6期642-648,共7页Journal of North University of China(Natural Science Edition)

基　　金：国家科技重大专项项目(2010ZX03006-005-001);教育部中央高校基本科研业务费专项资金资助项目(12QN10);广东电网科技项目(K-GD2012-292)

摘　　要：为延长最优风能曲线的跟踪长度,提高大型风力发电机组的单位时间发电量,提出了一种双PI动态解耦控制环控制策略.该策略采用变桨控制与变流控制联动方式,在风力发电机组启动到满发过程的不同阶段进行分区段管理控制.通过动态解耦控制,在系统状态切换过程中重点考虑不同风况的影响,破除系统假平衡状态,以达到系统追踪最优风能的目标.自主研制风力发电机组的主控制系统并进行了验证,测试结果表明:该策略在IEC所规定的恒定风、渐变风等多风况下性能良好并可延长最优风能追踪段,在安全运行的前提下可使1.5 MW异步双馈风力发电机组的日均功率提高5.5%.In order to extend the tracking length of the optimal wind power curve while maintaining high generating capacity of wind turbines, a novel dual-PI dynamic decoupling strategy was proposed. The strategy combined together with pitch regulator and transducer controlling based on the controlling principle. Differential management and control strategies were adopt with dynamic decoupling from the starting process and rate stage. The non-real balance can be broken with the proposed dynamic decoupling strategy by considering different wind state during system switching, and thus the optimum wind energy tracing can be achieved. The main control system of the wind turbine was developed to verify the performance. The experimental results illustrate that the strategy works well under IEC specified constant and gradient wind, and can extend optimum wind energy zone, the average daily power is increased about 5.5% for 1.5 MW asynchronous doubly-fed wind turbine.

关 键 词：风力发电机组 双PI 动态解耦 多风况 现场试验 

分 类 号：TM311[电气工程—电机]