Simulation of Some Power Electronics Case Studies in Matlab Simpowersystem Blockset by Alassouli Dr. Hidaia Mahmood

Author:Alassouli, Dr. Hidaia Mahmood [Alassouli, Dr. Hidaia Mahmood]
Language: eng
Format: epub
Published: 2017-06-06T00:00:00+00:00

Fig. 9. Waveforms illustrating STATCOM dynamic response to system voltage steps

4. CONTROL OF LOAD FLOW USING UPFC

A UPFC that used to control the power flow in a 500 kV /230 kV transmission system is shown in Fig. 10. The system, connected in a loop configuration, consists essentially of five buses (B1 to B5) interconnected through transmission lines (L1, L2, L3) and two 500 kV/230 kV transformer banks Tr1 and Tr2. Two power plants located on the 230-kV system generate a total of 1500 MW which is transmitted to a 500-kV 15000-MVA equivalent and to a 200-MW load connected at bus B3. The plant models include a speed regulator, an excitation system as well as a power system stabilizer (PSS). In normal operation, most of the 1200-MW generation capacity of power plant #2 is exported to the 500-kV equivalent through three 400-MVA transformers connected between buses B4 and B5. For this case study we are considering a contingency case where only two transformers out of three are available (Tr2= 2*400 MVA = 800 MVA).

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