Pasaran terhadap elektrik kini menjadi sangat penting disebabkan oleh tekanan ekonomi dan keperluan secara mendalam untuk menjana kuasa elektrik sesuatu sistem supaya sistem berkenaan berada dalam keadaan selamat. Pada masa yang sama, beberapa masalah turut timbul disebabkan oleh penggabungan sistem yang sedia ada kepada entity yang lebih meluas dan mengawas sistem berkenaan dalam masa yang singkat. Perkara ini akan menimbulkan kepentingan untuk menganalisis beberapa aspek dan yang lebih penting adalah menganalisa pengawalan di mana kaedah pengawalan mesti menyaingi keperluan pasaran yang lebih luas pada masa sekarang daripada sebelum ini. Masalah ini lebih membebankan apabila wujudnya fenomena kestabilan fana (transient stability). Dalam tesis ini, beberapa teori seperti persamaan buai (swing equation), regangan pindah (transfer reactance), sudut kelengkungan kuasa (power angle curve), dan kriterion sama luas (equal area criterion) diaplikasikan. Dalam tesis ini, dua kaedah penyelesaian kestabilan fana telah dibincangkan iaitu penyelesaian peringkat demi peringkat bagi lengkungan buai dan kriterion sama luas. Beberapa program MATLAB telah direka untuk mengkaji kes kestabilan fana menggunakan dua kaedah tersebut. Program ini membantu menentukan masa geganti semulajadi, masa melengah genting untuk pemutus litar, paras voltan sesuatu sistem dan kebolehan pemindahan di antara sistem. Dengan demikian,satu tatacara relay yang lebih baik akan dicadangkan.
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The electricity market has become very important because of economic pressures and needs in depth to generate electricity of systems are safe. At the same time, some problems also arise due to the consolidation of existing systems to a broader entity, and monitor the system in a short time. This holds true for analysis aspects and even more for control, in as much as, today; control actions must cope with considerably more stringent market requirements than in the past. This problem is more burdensome when there is a phenomenon of transient stability. This thesis has discussed some theory related to transient stability such as the swing equation, transfer reactance, power angle curve and equal area criterion. In this thesis two possible methods of solution of transient stability have been discussed and they are step by step solution for swing curve and equal area criterion. Some MATLAB programs has been developed to the study the transient stability cases by using the two methods. These programs are helpful in determining critical power angle, critical clearing times for circuit breaker, voltage level of systems and transfer capability between systems. Thus, a better relay setting can be proposed.
electricity market has become very important because of economic pressures and needs in depth to generate electricity of systems are safe; phenomenon of transient stability. This thesis has discussed some theory related to transient stability such as the swing equation, transfer reactance, power angle curve and equal area criterion; MATLAB programs has been developed to the study the transient stability cases by using the two methods. These programs are helpful in determining critical power angle, critical clearing times for circuit breaker, voltage level of systems and transfer capability between systems.
Development and modelling of power system stability using matlab_Nor Ain Bt Jamil Hosni_E3_2011_875003993_00003089549_NI