A new wide area information based power system out-of-step oscillation detecting and oscillation center tracking scheme

作者：Zhang, Yanxia; Zhang, Shuai^*; Meng, Gaopeng

来源：International Journal of Electrical Power & Energy Systems, 2017, 93: 228-237.

DOI：10.1016/j.ijepes.2017.05.029

• Out-of-step oscillation detecting
• Out-of-step oscillation center tracking
• Out-of-step splitting criterion
• Splitting section
• Wide area information

A new out-of-step oscillation detecting and oscillation center tracking scheme based on the wide area information obtained from phasor measurement units (PMU) is proposed in this paper. In this scheme, the out-of-step oscillation is detected by the change rate of phase angle difference between bus voltage and system current, and the oscillation center tracking is completed by analyzing the phase angle relation between, terminal bus voltages of electrical components and the system current. The scheme is easy to implement, and the tracking result is not affected by the changes of system structure and operation modes. Even in the complicated situations that the impedances of the whole system are nonuniform and the equivalent system potential amplitudes are not equal, it can still work well. The simulation results on PSCAD prove it is efficient. Utilizing the tracking results, a new out-of-step splitting criterion is given with which the splitting section can be determined dynamically according to the real-time operation state of power system.

• 出版日期2017-12
• 单位天津大学