摘要
功角是电力系统稳定性的重要参量,因此功角的在线监测对于电力系统的稳定运行具有重要意义。针对水轮发电机功角直接测量法存在的问题,首先分析了水轮发电机直接测量算法的原理,就其实现问题及难点进行了详细的阐释和分析,然后针对直接测量法没有充分考虑现场的实际应用情况、功角精度不高、实时性差的问题,提出了解决方案,分别从提高转速测量精度、抵消齿不均匀对功角测量的影响、设置宽齿进行矫正检测并提高防滑齿能力3个方面进行了改进,以提高直接测量法的测量精度。针对改进方案,设计了动模实验进行实验验证,通过实验值与理论计算值的比较,证实了该改进方法的可行性与有效性,对提高水轮发电机功角测量精度具有较好的参考意义。
Power angle is an important parameter to the power system＇s stability, whose on-line monitoring is of great significance . In the light of exited problems in direct measurement of hydro generator,the principle of direct measurement or hydro generator is analyzed, and its difficult point is presented in detail. For formal method didn＇t fully consider the site condition with low power angle precsion ＆ instantaneity, solution is put forward to improve the measurement precision of direct method from 3 aspects of improving the speed measuring precision,offsetting the innuenee of uneven gear width upon angel measurement,setting proper gear width to correct detection. Dynamic model lest is designed to make test cheek. The feasibility ＆ effectiveness of the improved method is proved through the comparison between lest value and calculated value.
出处
《陕西电力》
2014年第5期69-73,共5页
Shanxi Electric Power
关键词
功角
水轮机
直接测量法
power angle
hydroelectric generator
direct measuring method
