Implementasi Algoritma PSO untuk Perancangan dan Koordinasi Peredam Osilasi di Sistem Tenaga Listrik dengan UPFC

Sasongko Pramono Hadi

Abstract


Abstract— This paper presents an effective design and coordination of controllers in power system equipped with UPFC. Each controller produce different supplementary signals, the power system stabilizer PSS signal for machine and the power oscillation damping POD signal for UPFC. A single stage lead-lag compensator scheme was considered in the PSS and POD structure. A new computational approach was proposed using PSO algorithm to determine simultaneously the parameter controllers for both PSS and POD. Pole assignment technique was proposed in controller parameter design, the dominant pole should be assigned to locate close to threshold –0.1. The controller performances were investigated by using 0.2 pu additional load to power system. The simulation results show that both PSS and UPFC POD controller simultaneously present a positive interaction. PSS and POD could enhance dynamic responses performance. The dominant eigenvalues shift and approach their real part threshold. The controllers could give a better rotor angle response, only 4.5 s settling time and the first swing overshoot reduced to 23.38%.

Intisari— Paper ini menyajikan cara efektif perancangan dan koordinasi peredam di sistem tenaga listrik yang dilengkapi dengan UPFC. Masing-masing peredam menghasilkan sinyal tambahan, sinyal peredam dihasilkan dari PSS masuk ke sistem eksitasi, sinyal tambahan hasil dari POD masuk ke UPFC. Struktur kompensator lead-lag satu tingkat digunakan sebagai peredam. Pendekatan baru dalam teknik komputasi dengan bantuan algoritma PSO diusulkan untuk menentukan secara simultan parameter peredam, baik parameter PSS maupun POD. Teknik perancangan peredam berbasis pada pole assignment, kutub sistem diarahkan akan berada sedekat mungkin ke nilai ambang -0.1. Unjuk kerja peredam diuji pada sistem saat sistem mengalami kenaikan beban 0.2 pu. Hasil simulasi menunjukkan bahwa PSS dan POD dapat berinteraksi secara positif. PSS dan POD dapat meningkatkan kestabilan sistem. Kutub dominan dapat mendekati ambang lokasi di sumbu riil negatif. Peredam dapat memberi respons sistem yang lebih baik, ditandai dengan memendeknya settling time menjadi 4.5 detik dan berkurangnya simpangan ayunan pertama menjadi hanya 23.38%.

Kata Kunci— UPFC, SMIB, power oscillation damping, power system stabilizer, PSO, pole assignment


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References


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DOI: http://dx.doi.org/10.22146/jnteti.v2i2.57

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