PERANCANGAN KOORDINASI KENDALI PSS-POWER OSCILLATION DAMPING - LQR MENGGUNAKAN PSO PADA SMIC TERPASANG UPFC

Rian Fatah Mochamad, Dr. Ir. Sasongko Pramono Hadi, D.E.A.

2013 | Tesis | S2 Teknik Elektro

Penelitian ini menyajikan tentang desain dan simulasi dari kendali sistem tenaga yang dilengkapi dengan peralatan flexible alternating current transmission system (FACTS) : unified power flow controller UPFC ( . ) Kendali yang digunakan adalah power system stabilizer (PSS) dan power oscillation damping (POD). PSS menghasilkan sinyal kendali yang diumpankan pada sistem eksitasi generator, sementara sinyal kendali POD diumpankan pada UPFC. Desain PSS menggunakan struktur lead – lag dua tingkat. Untuk POD, diusulkan desain kendali baru, yaitu modal optimal POD. (MO) Modal optimal adalah kombinasi dari teknik kendali konvensional, linear ( quadratur regulator LQR) dengan modal control. arameter POD P dan PSS masing – masing ditala menggunakan PSO. Efektivitas kendali diuji dengan memberikan pada sistem sinyal gangguan tenaga yang diteliti. Dari hasil simulasi diketahui kestabilan sistem menurun setelah penambahan UPFC. Kendali PSS dan POD selanjutnya diimplementasikan ke sistem. Respon terbaik sistem dicapai oleh kendali yang diusulkan, yaitu MO penurunan POD PSO yang dilengkapi dengan PSS dimana dicapai overshoot sebesar 9 % dan 5 settling time sebesar 33% dibanding sistem terpasang hanya terpasang PSS.

This thesis presents the design and simulation 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 two stage lead lag compensator scheme was considered in the PSS structure. A new controller design, linear optimal control LQR associated with modal control scheme MO, is proposed in both PSS and POD design. The multi- objective method was used to determine PSO the parameter controllers for POD and PSS. The controller performances were investigated by using small disturbance to power system. The simulation results show that the presence of UPFC non POD leads to get less stability system. Appropriate PSS and POD parameters have been determined and could enhance dynamic responses performance. Best condition achieved by proposed method (combination of MO POD PSO and PSS) The dominant eigenvalues shift and approach their real part threshold. POD MO PSO controllers could give a better rotor angle response, up to and 95 % reduction in 33 % overshoot and settling time respectively compared with PSS only Both PSS and UPFC POD controller simultaneously present a positive interaction.

Kata Kunci : PSO, Kendali MO, Stabilitas, UPFC