(c) Consider the interconnected system presented in Figure Q2.3 and the information provided in Table Q2.1...

 

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(c) Consider the interconnected system presented in Figure Q2.3 and the information provided in Table Q2.1 and Table Q2.2. Area 1 Area 2 Generator G₁ G₂ Load L₁ L₂ G1 G₁ ( G₂ L₁ L2 D₁ Base 1000 (MVA) 750 (MVA) XA,B= 0.1 pu Base 500 (MVA) 250 (MVA) (pu) 50MW Figure Q2.3 Table Q2.1 Regulation constant [R] 0.1 (Hz/MW) 3 (%) Table Q2.2 D₂ The interconnected system is operating in steady state at a frequency of 50 Hz with 50 MW flowing from Area 1 to Area 2 when the load suddenly increases in Area 1 by 100 MW. Use a 1000 MVA base to: (i) Calculate the new system frequency both in pu and Hz. (ii) Calculate the change in power flow across the tie-line. Explain whether Area 1 is still exporting power to Area 2. (iii) Calculate the primary frequency response of each generator and load. Write your results in the form of Table Q2.3. Table Q2.3 G₂ ΔΡm or DΔω Damping constant [D] 60 (MW/Hz) 6 (pu) Operation 950 (MW) 700 (MW) (MW) (iv) Based on your answer to part (iii), calculate the total frequency response in the interconnected system. Discuss how the results compare with the 100 MW disturbance. (v) Based on your answer to part (iii), discuss any issues with the new outputs of the generators. Explain potential solutions. (c) Consider the interconnected system presented in Figure Q2.3 and the information provided in Table Q2.1 and Table Q2.2. Area 1 Area 2 Generator G₁ G₂ Load L₁ L₂ G1 G₁ ( G₂ L₁ L2 D₁ Base 1000 (MVA) 750 (MVA) XA,B= 0.1 pu Base 500 (MVA) 250 (MVA) (pu) 50MW Figure Q2.3 Table Q2.1 Regulation constant [R] 0.1 (Hz/MW) 3 (%) Table Q2.2 D₂ The interconnected system is operating in steady state at a frequency of 50 Hz with 50 MW flowing from Area 1 to Area 2 when the load suddenly increases in Area 1 by 100 MW. Use a 1000 MVA base to: (i) Calculate the new system frequency both in pu and Hz. (ii) Calculate the change in power flow across the tie-line. Explain whether Area 1 is still exporting power to Area 2. (iii) Calculate the primary frequency response of each generator and load. Write your results in the form of Table Q2.3. Table Q2.3 G₂ ΔΡm or DΔω Damping constant [D] 60 (MW/Hz) 6 (pu) Operation 950 (MW) 700 (MW) (MW) (iv) Based on your answer to part (iii), calculate the total frequency response in the interconnected system. Discuss how the results compare with the 100 MW disturbance. (v) Based on your answer to part (iii), discuss any issues with the new outputs of the generators. Explain potential solutions. (c) Consider the interconnected system presented in Figure Q2.3 and the information provided in Table Q2.1 and Table Q2.2. Area 1 Area 2 Generator G₁ G₂ Load L₁ L₂ G1 G₁ ( G₂ L₁ L2 D₁ Base 1000 (MVA) 750 (MVA) XA,B= 0.1 pu Base 500 (MVA) 250 (MVA) (pu) 50MW Figure Q2.3 Table Q2.1 Regulation constant [R] 0.1 (Hz/MW) 3 (%) Table Q2.2 D₂ The interconnected system is operating in steady state at a frequency of 50 Hz with 50 MW flowing from Area 1 to Area 2 when the load suddenly increases in Area 1 by 100 MW. Use a 1000 MVA base to: (i) Calculate the new system frequency both in pu and Hz. (ii) Calculate the change in power flow across the tie-line. Explain whether Area 1 is still exporting power to Area 2. (iii) Calculate the primary frequency response of each generator and load. Write your results in the form of Table Q2.3. Table Q2.3 G₂ ΔΡm or DΔω Damping constant [D] 60 (MW/Hz) 6 (pu) Operation 950 (MW) 700 (MW) (MW) (iv) Based on your answer to part (iii), calculate the total frequency response in the interconnected system. Discuss how the results compare with the 100 MW disturbance. (v) Based on your answer to part (iii), discuss any issues with the new outputs of the generators. Explain potential solutions.