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Modeling & Analysis of 31 Bus Power System using Software simulation in PSAT & ETAP
 

Modeling & Analysis of 31 Bus Power System using Software simulation in PSAT & ETAP

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    Modeling & Analysis of 31 Bus Power System using Software simulation in PSAT & ETAP Modeling & Analysis of 31 Bus Power System using Software simulation in PSAT & ETAP Presentation Transcript

    • Power system design and analysis for reactive power support using software simulation model Nikhil V Kulkarni ECGR 5104 Computational Methods in Power System Department of Electrical and Computer Engineering University of North Carolina at Charlotte
    • Objective
      • Design of 31 bus power system using simulation software ETAP.
      • Initial calculation/estimation of required parameters from given data.
      • Implementation of system using simulation software.
      • Analysis of power flow.
      • Equipment optimization & Generator rescheduling for minimum losses.
      • Analysis of reactive power compensation required for the vulnerable area.
    • Power System Architecture
    • Improvement from Base Case Bus ID Nominal kV Base Case %Voltage Improvement Case I %Voltage Improvement Case II %Voltage Bus1 230 94.64 95.72 97.49 Bus2 230 95.89 96.81 98.69 Bus4 115 94.73 96.11 95.92 Bus5 230 94.34 95.49 97.2 Bus6 230 93.71 95.03 96.6 Bus7 230 93.2 94.67 96.09 Bus8 115 91.61 93.95 93.67 Bus9 69 89.78 91.89 98.16 Bus10 69 84.66 86.94 93.65 Bus11 115 93.69 94.84 94.41 Bus13 69 92.63 93.53 96.09 Bus14 69 94.94 95.5 96.53 Bus15 230 97.33 97.99 98.16 Bus16 230 99.09 99.11 99.14 Bus19 115 88.06 90.51 90.21 Bus23 69 92.8 94.37 97.35 Bus24 230 92.98 94.54 95.71 Bus25 230 93.15 94.76 95.74 Bus26 230 93.76 95.42 95.94 Bus29 115 92.76 96.22 96.31 Bus31 230 93.25 95.49 95.97
    • Generator Rescheduling Generator Scheduling Case Gen ID MW loading %MW generation Total Losses (MW) Base Case Gen 1 75 25 41.31 Gen 2 62.5 25 Gen 3 87.5 25 Gen 4 (Slack Bus) 544.231 136.1 Improvement Case I Gen 1 225 75 14.862 Gen 2 75 30 Gen 3 175 50 Gen 4 (Slack Bus) 267.783 66.9 Improvement Case II Gen 1 225 75 15.075 Gen 2 82.5 33 Gen 3 280 80 Gen 4 (Slack Bus) 155.496 38.9
    • Equipment Optimization Transformer ID Tap adjustment Voltage Side (kV) T1 2.5% 230 T3 10% 69 T4 7.5% 69 T7 2.5% 69 Transformer ID % Operating Changed to (MVA) T2 22.8 15 T3 62 - T4 44.4 25 T5 14 10 T6 21.4 15 T7 5.1 10
    • Improving Voltage Profile
      • Connect parallel transformer or transmission line (Effect is reduced reactance)
      • Add capacitor bank
      • Changing Transformer taps
      • Implementation of AVR
      • Adding FACTS devices
      • VAR compensators
    • Implementation Methodology & Simulation tools used.
      • PSAT (Power system Analysis Toolbox)
      • PSAT is interface to MATLAB SIMULINK
      • ETAP simulation software
      • Pros & Cons
    • Shortfalls in design
      • Optimal power flow, Economic dispatch and Unit Commitment are not taken into consideration.
    • Implementation methodology for microgrid is connection to grid
      • Description of Microgrid system
          • Generators – 2
          • Transformers – 2
          • Transmission lines – 2
          • Load – 1
      • Analysis
        • Power flows in interconnection between 2 systems is observed.
    • Case Study
      • 3 case studies are considered
        • When Micro source are generating power
        • When Micro source are not in system
        • When Load is varied from 1 MW - 2 MW – 4 MW
    • Conclusions & Recommendations
      • Base case of 31 bus power system has been run and results observed from power flow are analyzed
      • Micro grid system is interconnected with grid and results are analyzed for various test cases
    • References & Appendices
      • References
        • Power System Analysis - Hadi Saadat
        • PSAT manual - Frederick Milano
      • Appendices
        • Refer Report