XU Bo1, LI Shi-xing2. A calculating method of the power angle for synchronous generators in phase lead operation[J]. 2011, 31(5): 8-11+15.DOI:
一种同步发电机进相运行时功角的计算方法
摘要
功角是判断机组运行稳定的一个重要参量。提出一种在进相运行工况下
实时计算发电机功角的新方法
该方法采用发电机运行中的实时同步电抗
并综合考虑变压器、线路等外部回路参数。通过试验及实际验证该方法具有很好的精度。
Abstract
Power angle is an important parameter for determining the stability of the power system.It proposes an online measurement of the electric signals such as the active power
the generator terminal voltage
the field current and the field voltage in phase lead operation.According to this measurement method
the unknown dynamic parameter(synchronous reactance)is calculated.Taking into account of the effects of the exterior reactance to the measurement of the power angle
the real time generator power angle is finally obtained.The accuracy and practicability of this method are proved by the test’s results.