电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
Power System Protection and Control
2015年
20期
21-28
,共8页
模态敏感度分析%模态分析%模态阻抗%模态频率%高速铁路牵引供电系统
模態敏感度分析%模態分析%模態阻抗%模態頻率%高速鐵路牽引供電繫統
모태민감도분석%모태분석%모태조항%모태빈솔%고속철로견인공전계통
modal sensitivity analysis%modal analysis%modal impedance%modal frequency%high-speed railway traction supply system
高速铁路牵引供电系统不同的负荷模型将得到不同的节点导纳矩阵,从而对谐波谐振幅度、频率产生较大的影响.利用复矩阵模态分析研究不同高速列车的谐波模型对高速铁路牵引供电系统谐波谐振特性的影响规律.将利用频谱分析得到的驱动点阻抗变化曲线与三种不同负荷谐波模型得到的模态幅值和频率敏感度分析进行对比.结果表明,不同的谐波模型在相同的谐振模态下得到了相近的谐振频率区域.
高速鐵路牽引供電繫統不同的負荷模型將得到不同的節點導納矩陣,從而對諧波諧振幅度、頻率產生較大的影響.利用複矩陣模態分析研究不同高速列車的諧波模型對高速鐵路牽引供電繫統諧波諧振特性的影響規律.將利用頻譜分析得到的驅動點阻抗變化麯線與三種不同負荷諧波模型得到的模態幅值和頻率敏感度分析進行對比.結果錶明,不同的諧波模型在相同的諧振模態下得到瞭相近的諧振頻率區域.
고속철로견인공전계통불동적부하모형장득도불동적절점도납구진,종이대해파해진폭도、빈솔산생교대적영향.이용복구진모태분석연구불동고속열차적해파모형대고속철로견인공전계통해파해진특성적영향규률.장이용빈보분석득도적구동점조항변화곡선여삼충불동부하해파모형득도적모태폭치화빈솔민감도분석진행대비.결과표명,불동적해파모형재상동적해진모태하득도료상근적해진빈솔구역.
Different modal admittance matrix, obtained according to different harmonic model of non-linear loads (NLLs), may have a big influence on the modal impedance and modal frequency in a resonance mode. The effect of load modeling of high-speed train on resonance behavior of high-speed railway traction supply system employing modal sensitivity of modal analysis approach is investigated. Results inferred from the driving point impedance curve got from frequency scan are compared with those of the modal sensitivity analysis with three different NLL models. The results show that different NLL models produce closed resonance frequency zone in the same resonance modes. This work is supported by National Natural Science Foundation of China (No. U1134205, No. 51177139, and No. 51477145).
