Stability is one of the requirements of an electrical power system which can be considered good/ideal, One disturbance that can affect stability is the outage of the system generator. To overcome this problem, load shedding is performed, The load is released in a simulation aimed at bringing the frequency back to the authorized value after the disturbance has occurred. The power plant that experienced a trip in this study was the largest Lampung unit of the generator Tarahan 4. When the generator Tarahan 4 has been tripped, the frequency system is falls and stabilize at 48.8 Hz. Thereforeits necessary to release the load so that the system frequency returns to the authorized value, which is from 49,8 Hz to 50.2 Hz. Based on the results of simulation after setting the frequency relay, by releasing a load of 152.2 MW, the frequency was stable at 50.074 Hz. So it can be concluded that the frequency relay setting has been able to return the system frequency to allowable value.

稳定性是电力系统的要求之一，可以认为是良好/理想的。可能影响稳定性的一种干扰是系统发电机的中断。为了克服这个问题，执行了减载，在模拟中释放负载，目的是在干扰发生后将频率恢复到授权值。本研究中发生跳闸的发电厂是发电机 Tarahan 4 的最大楠榜机组。当发电机 Tarahan 4 跳闸时，频率系统下降并稳定在 48.8 Hz。因此有必要释放负载，使系统频率恢复到授权值，即从 49.8 Hz 到 50.2 Hz。根据设置频率继电器后的仿真结果，通过释放 152.2 MW 的负载，频率稳定在 50。074赫兹。由此可以得出结论，频率继电器整定已经能够使系统频率恢复到允许值。