基于RTDS的直驱风机硬件在环实验方法

doi:10.16180/j.cnki.issn1007-7820.2024.02.009

摘要/Abstract

摘要：

为实现风电机组硬件在环平台的通用性,文中在环实验平台搭建了通用风电机组硬件,完成了风电机组的优化控制。针对直驱风机在电网电压不平衡或不对称的情况下影响直驱风机正常运行的问题,文中采用基于正序和负序的电流解耦算法消除负序电流以保持恒定的输出功率。通过抑制故障时风电机组的无功功率两倍频波动,使有功和无功基准值均为0,电网无功功率两倍频波动分量的幅值为0,达到消除负序电流使风电机组稳定输出的目的,并在该实验平台进行仿真验证。实验结果表明,风电机组有功功率输出保持不变,显著提高了风电机组并网的适应性,验证了该方法的合理性和有效性。

关键词: 直驱风机, 实时数字仿真器, 不平衡电压, 锁相环, UREP, 通用平台, 硬件在环, 优化控制

Abstract:

In order to realize the generality of wind turbines hardware in the loop platform, a universal wind turbines hardware in the loop experiment platform is built to realize the optimal control of wind turbines. In view of the problem that direct drive wind turbines can affect the normal operation of direct drive wind turbines when the power grid voltage is unbalanced or asymmetrical, this study adopts the algorithm based on the decoupling of positive sequence current and negative sequence current to eliminate the negative sequence current and keep the constant output power. By inhibiting the double frequency fluctuation of the reactive power of the wind turbines when the fault occurs, the reference value of the active power and reactive power is 0, the amplitude of the double frequency fluctuation component of the grid reactive power is 0, and the purpose of eliminating the negative sequence current and making the output of the wind turbines stable is achieved. The simulation verification is carried out on the experimental platform. The experimental results show that the active power output of wind turbines remains unchanged and the grid-connection adaptability of wind turbines is significantly improved, which verifies the rationality and effectiveness of the method.

Key words: direct drive wind turbines, RTDS, unbalance voltage, phase-locked loop, UREP, universal platform, hardware-in-loop, optimal control

中图分类号:

TP271

何朴想,郝正航,陈卓,杨光绕,聂春芳. 基于RTDS的直驱风机硬件在环实验方法[J]. 电子科技, 2024, 37(2): 61-68.

HE Puxiang,HAO Zhenghang,CHEN Zhuo,YANG Guangrao,NIE Chunfang. Research on Hardware in Loop Experiment Method of Direct Drive Wind Turbines Based on RTDS[J]. Electronic Science and Technology, 2024, 37(2): 61-68.

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设备名称	参数	数值
风力发电机组	额定电压/V	690
	额定功率/kW	2 500
	额定功率因数	0.924 9
箱式变压器	变比	0.69 kV/35 kV
	短路阻抗/%	6.5
	容量/MVA	2.5
	接线组别	Dyn11
主变压器	变比	230 kV/35 kV
	短路阻抗/%	13.5
	容量/MVA	15
	接线组别	Yd1
传输线	正序电阻/Ω·km^-1	0.065 1
	正序电抗/Ω·km^-1	0.301 1
	零序电阻/Ω·km^-1	0.245 5
	零序电抗/Ω·km^-1	0.790 8
	线路长度/km	50
无穷大系统	容量/MW	4 840
无穷大系统	频率/Hz	50

项目/名称	GTAO	GTAI	GTDO	GTDI
采样周期	1 μs	1 μs	300 ns	300 ns
工作电平	±10 V (输出量程)	±10 V (输入量程)	0~5 (逻辑电平)	0~5 (逻辑电平)
通道路数/位数	12路/16位	12路/16位	64路数字信号	64路数字信号
隔离	光电隔离	光电隔离	光电隔离	光电隔离