Penerapan Metoda Linear Quadratic Gaussian (Lqg) untuk Analisa Peralihan Deviasi Frekuensi Sistem Kendali Frekuensi Tenaga Listrik

Jurnal ini membahas penerapan metoda Linear Quadratic Gaussian (LQG) untuk analisa peralihan deviasi frekuensi sistem kendali frekuensi tenaga listrik. Sistem kendali frekuensi tenaga listrik merupakan suatu sistem yang digunakan untuk menjaga deviasi frekuensi yang ditimbulkan oleh Perubahan beban terutama pada saat pembagian beban yang harus dipikul oleh sebuah generator. Paramater yang diamati dalam analisa peralihan ini adalah waktu naik, waktu puncak, waktu keadaan mantap, nilai puncak dan nilai lewatan maksimum. Analisa peralihan yang dilakukan tanpa dan dengan metoda Linear Quadratic Gaussian (LQG) pada sistem kendali frekuensi tenaga listrik tipe Non – Reheat, Reheat dan Hidraulik berdasarkan kriteria perancangan tertentu. Hasil analisa memperlihatkan sistem kendali frekuensi tenaga listrik tipe Reheat dan Hidraulik memiliki performansi analisa peralihan yang lebih baik dan memenuhi kriteria perancangan. Untuk tipe Reheat diperoleh waktu naik sebesar 0.8557 detik, waktu puncak sebesar 2.9815 detik, waktu keadaan mantap sebesar 1.6838 detik, nilai puncak sebesar 0.0088 dan nilai lewatan maksimum sebesar 0.5845

Analisa Peralihan Deviasi Frekuensi Sistem Kendali Frekuensi Tenaga Listrik Dengan Metoda Kendali Optimal

This journal discusses about the analysis of frequency transition deviation of power frequency control system with Optimal control methods. The response of frequency transition deviation of power frequency control system is one of indicator in the performance of the power system during disturbances. These disturbances cause changes in the parameters value which result in power frequency control system will be disrupted and resulted system is not able to work normally after the disturbances. One of disturbance often occurs in power system is a sudden load changes. Sudden load changes cause of decreasing or increasing in the value of frequencies around the center of its operations. By using the optimal control method consists of Linear Quadratic Regulator (LQR) method and Linear Quadratic Regulator with weights function on the output (LQRy) are analyzed frequency transition deviation of power frequency control system type of Non-Reheat, Reheat and Hydraulic. The results obtained for the Linear Quadratic Regulator (LQR) method, the power frequency control system type of Non–Reheat has the smallest values of the transition parameter at the values of the transition parameter power frequency control system type of Reheat and Hydraulic. The values of the transition parameter power frequency control system type of Non-Reheat are 0.1266 seconds in time rise, 0.3451 seconds in settling time, 0.3451 seconds in peak time, 3.1972% in maximum overshoot and 0.0069 in peak value. For the Linear Quadratic Regulator method with weights function on the output (LQRy) power frequency control system type of Hydraulic has the smallest values of the transition parameter compared with the values of the transition parameter power frequency control system type of Non-Reheat and Reheat. The values of the transition parameter power frequency control system type of Hydraulic are 0.0451 seconds in time rise, 0.0731 seconds in settling time, 0.1300 seconds in peak time, 0.0531% in maximum overshoot and 0.0032 in peak value

Perancangan dan Analisa Sistem Kendali Frekuensi Sistem Tenaga Listrik dengan Metode Penempatan Kutub

This study discusses the application of Polar Placement method using Bass - Gura algorithm on Non - Reheat type frequency electric control system with emphasis on frequency deviation on power system. The performance indicators of electric power system that can be calculated and observed include error analysis, response speed, response quality, frequency domain analysis, stability analysis and robustness analysis of the frequency deviation response of electric power system. The simulation results show that the non-reheat type deviation of electric power with Polar Placement method shows better result compared to non-reheat type frequency power deviation response without the Polar Placement method with a steady state error value of 0.0041, the rise time value of 0.0562 second, the peak time value is 0.0049 seconds, the time value of the steady state is 0.5113 seconds, the maximum pass value is 19.2112%, the root of the characteristic equation which all the parts are negative, the maximum peak value is 1.0049 and the maximum peak value of complementary sensitivity is 0.0051. Keywords: Frequency Deviation, Polar Placement, Bass - Gura Algorithm, Non – Rehea