Sistem Kontrol Frekuensi Optimal Pada Pembangkit Hibrid Wind-Diesel Dengan Imperialist Competitive Algorithm

DOI: https://doi.org/10.14710/jtsiskom.5.4.2017.135-141
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Submitted: 2017-06-01
Published: 2017-10-13
Section: Articles
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Frequency load arrangement on wind-diesel hybrid power plants (PLTH) becomes a very important thing in order to support the performance of the plant. One method of setting the load frequency is to use additional controllers such as Proportional Integral Derivative (PID). The use of PID also has its own problems, such as adjusting the value of unoptimal gain. In practice the PID gain is observed by trial-error, making it difficult to obtain the optimal value of the PID. In this research, we proposed an intelligent method of Imperialist Competitive Algorithm (ICA) in finding the optimal value of PID. The ICA is a smart method inspired by the competition in power struggles. ICA works based on the objective function, which minimizes Integral Time Absolute Error (ITAE). From the results of ICA optimization obtained value Kp = 63.1087, Ki = 43.2682, Kd = 9.6038. Response system, among others, for the settling time of 5.8 and overshoot of -9.098e-05 to 1.111e-09 pu which is the smallest settling time and overshoot value.

Pengaturan frekuensi beban pada pembangkit listrik tenaga hibrid wind-diesel (PLTH) menjadi hal yang sangat penting agar dapat menunjang kinerja pembangkit. Salah satu metode pengaturan frekuensi beban adalah menggunakan kontroler tambahan seperti Proporsional Integral Derivatif (PID). Penggunaan PID juga mempunyai permasalahan tersendiri, seperti penyetelan nilai gain yang tidak optimal. Dalam penerapannya gain PID ditala secara trial-error, sehingga sulit untuk mendapatkan nilai optimal dari PID. Dalam penelitian ini, diusulkan sebuah metode cerdas yaitu Imperialist Competitive Algorithm (ICA) dalam mencari nilai optimal dari PID. ICA merupakan metode cerdas yang terinspirasi dari kompetisi dalam memperebutkan kekuasaan. ICA bekerja berdasarkan fungsi objektif, yaitu meminimalkan Integral Time Absolute Error (ITAE). Dari hasil optimasi ICA didapatkan nilai Kp = 63.1087, Ki = 43.2682, Kd = 9.6038. Respons sistem yang diperoleh antara lain waktu settling sebesar 5.8 dan overshoot sebesar -9.098e-05 hingga 1.111e-09 pu yang merupakan nilai waktu settling dan overshoot terkecil.

Keywords

Wind-diesel; ICA; PID; frekuensi; overshoot

  1. Muhammad Ruswandi Djalal 
    Teknik Energi, Politeknik Negeri Ujung Pandang, Indonesia
  2. Andi Imran 
    Teknik Elektro, Institut Teknologi Sepuluh Nopember, Indonesia
  3. Herlambang Setiadi 
    Department of Electrical Engineering, Queensland University, Australia
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