论文标题
使用PMU数据来计算续签频率和系统rocof
Calculate Center-of-Inertia Frequency and System RoCoF Using PMU Data
论文作者
论文摘要
电源系统频率对于系统的整体稳定性很重要。但是，由于系统惯性的分布性，并且在一个同步系统中，由于系统惯性的分布性和不同发电机转子电气速度的微小不一致，系统频率没有一个单个测量点。本文提出了一种新的方法，以更准确地使用多个位置的PMU数据来计算系统的惯性中心（COI）频率和更换频率（ROCOF）。 COI频率和ROCOF值进一步用于帮助快速估计频率事件的不平衡MW量。在美国东部互连系统中使用实际测量结果的测试结果验证了该方法的有效性。
The power system frequency is important for the system overall stability. However, there does not exist a single measurement point of the system frequency due to the distributed nature of the system inertia and the small inconsistency of different generator rotor electrical speeds in one synchronized system. This paper proposed a new approach to calculate the system center-of-inertia (COI) frequency and the rate-of-change-of-frequency (RoCoF) more accurately using PMU data at multiple locations. The COI frequency and the RoCoF value were further used to assist fast estimation of the imbalance MW amount of a frequency event. Test results using actual measurements in the U.S. Eastern Interconnection system validated the effectiveness of the proposed method.
