分布式调相机励磁系统参数优化模型研究  

Parameters optimization model study of excitation system of distributed synchronous condenser

作　　者：付敏[1] 崔灿灿 王璐瑶 马春旭 印钊阳 FU Min;CUI Can-can;WANG Lu-yao;MA Chun-xu;YIN Zhao-yang(School of Electric and Engineering,Harbin University of Science and Technology,Harbin 150080,China)

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150080

出　　处：《电机与控制学报》2022年第2期102-110,共9页Electric Machines and Control

基　　金：国家自然科学基金(51477038);黑龙江省自然科学基金重大项目(ZD2019E008)。

摘　　要：可再生能源大多位于偏远地带,跨区外送时抵御系统冲击能力较弱,为了提高系统运行可靠性,以分布式调相机为无功补偿设备,研究励磁参数对调相机动态特性的影响。首先分析调相机输出无功的数学模型,确定反映调相机动态无功特性的评价指标—有效无功电流增益,基于该指标的频域灵敏度分析,来获取影响调相机动态特性的关键励磁参数及优化规律。以有效无功电流增益为目标函数,利用平均频域灵敏度指导改进蜂群算法的寻优方向,建立励磁参数的优化模型并进行求解。以风电系统为例,仿真验证励磁参数优化模型的控制效果。研究表明,利用提出的励磁参数优化模型得到的励磁参数可以提高调相机的动态无功输出,降低系统电压波动幅值,保证风力发电机实现高压或低压穿越。Renewable energy sources are mostly located in remote areas,which leads to a weak ability to resist system impacts when the energy is sent out across the region.The distributed synchronous condenser is used as a reactive power compensation device to improve the operational reliability of the renewable energy system.And the influence of excitation parameters on the dynamic characteristics of the condenser is studied.The mathematical model of the reactive power of the condenser was firstly analyzed,and the effective reactive current gain was determined as an evaluation index responding to the dynamic characteristics.Based on the frequency domain sensitivity analysis of this index,the key excitation parameters and the optimization laws were obtained.With the effective reactive current gain as the objective function,using the average frequency domain sensitivity to guide the optimization direction of the improved bee colony algorithm,the optimization model was established and solved.The wind power system was used to simulate and verify the control effect of the optimization model.The study shows that the excitation parameters obtained by using the excitation parameter optimization model proposed can improve the dynamic reactive power output of the condenser,reduce the system voltage fluctuation amplitude,and ensure that the wind turbine achieves high or low voltage ride-through.

关 键 词：调相机 励磁参数 改进蜂群算法 频域灵敏度 有效无功电流增益 

分 类 号：TM342[电气工程—电机]