汽轮发电机测功法甩负荷试验算法误差来源  

Error Resources of Load Rejection Testing of Turbogenerators Using Dynamometry Method

作　　者：于达仁[1,2] 王西田[1,2] 杨金福 刘野[3] 

机构地区：[1]哈尔滨工业大学 [2]黑龙江省电力局 [3]哈尔滨汽轮机有限责任公司

出　　处：《汽轮机技术》1999年第3期169-172,共4页Turbine Technology

摘　　要：目前测功法甩负荷试验算出的飞升转速偏高于等价条件下常规法甩负荷的测量结果。分析了产生上述误差的固有原因：受发电机特性的影响，测功法甩负荷试验过程中的电动率和轴功率并不动态相等；就电动率而言，由于测功元件的固有惯性，其测量值和真实值之间也有动态差异。分析表明，以上因素均是导致测功法试验结果偏高的原因。Load rejection testing of turbogenerators using dynamometry method gives a calculated value of speed rise higher than the measured value in the equivalent routine testing. Two resources of the error are presented in this paper:(1)Owing to generator dynamics, electric power is not equal to shaft power during dynamic process of the dynamometry testing.(2)There is dynamic measurement error of electric power because of inherent inertia of the electric dynamometer. It is shown that the two factors are the main error resources of load rejection testing using dynamometry method.

关 键 词：汽轮发电机 甩负荷试验 测功法 误差来源 

分 类 号：TM311.06[电气工程—电机]