Abstract
This research manuscript proposes a Modified Grey Wolf Optimization approach for the power system congestion cost problem based on real power rescheduling methodology with solar photovoltaic system integration. The Bus Sensitivity Factor is utilized to determine the optimal positioning of the solar photovoltaic system. The Bus Sensitivity Factor assists in identification of the most sensitive bus for the injection of real power that will influence power flow in congested lines. The Modified Grey Wolf Optimization has been proposed for the congestion management problem with improved convergence rate and the potency to avoiding getting trapped into local optima. This is accomplished by enhancing the equilibrium between exploration and exploitation stages in traditional Grey Wolf Optimization algorithm. Furthermore, in the proposed Modified Grey Wolf Optimization, incorporation of the weighted distance technique has assisted in rapid discovery of the global optima. The performance of the proposed Modified Grey Wolf Optimization has been evaluated based on the benchmark functions in comparison with recent optimization techniques. The efficacy of the proposed strategy has been evaluated and validated on IEEE-30 bus system. Simulation findings highlight that the congestion cost achieved with Modified Grey Wolf Optimization with the influence of solar photovoltaic system has been reduced by 19.23, 16.57, 12.58, 10.97, 6.76 and 1.86% in comparison with some of the recent optimization techniques. Comparative analysis with recent optimization techniques reveals that the Modified Grey Wolf Optimization method for congestion management with solar photovoltaic system is more effective and accurate in terms of congestion cost, system losses, bus voltage magnitudes, convergence characteristic and computational time.
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Abbreviations
- \(T_{c}\) :
-
PV module temperature in °C
- \(T_{a}\) :
-
Ambient temperature in °C
- \(K_{ot}\) :
-
Nominal operating temperature in °C
- \(P_{pv}\) :
-
Power output of solar PV system in MW
- \(I\) :
-
Actual solar irradiation in W/m2
- \(I_{\max }\) :
-
Maximum solar irradiation in W/m2
- \(Q_{pv}\) :
-
Rating of PV system
- \(l_{pv}\) :
-
Loss factor for PV system
- \(R_{pv} (t)\) :
-
Hourly incident radiation
- \(R_{pv}\) :
-
Standard incident radiation
- \(\Gamma ( \bullet )\) :
-
Gamma factor
- \(\kappa\)and \(\psi\) :
-
Shape factors for the beta distribution function
- \(\mu\) :
-
Mean deviation
- \(\sigma\) :
-
Standard deviation
- \(CB_{SOC}^{T} (t)\) :
-
State of charge of the battery
- \(\eta_{CB}\) :
-
Overall efficiency of the battery
- \(\eta_{CB}^{c}\) :
-
Charging efficiency of the battery
- \(\eta_{CB}^{d}\) :
-
Discharging efficiency of the battery
- \(V_{bus}\) :
-
Bus voltage in volts
- \(CB_{bank}^{T}\) :
-
Total capacity of battery bank in Ah
- \(CB_{n} (Ah)\) :
-
Capacity of a single battery
- \(N_{CB}^{s}\) :
-
Number of batteries connected in series
- \(N_{CB}^{{}}\) :
-
Total number of batteries
- \(V_{CB}\) :
-
Voltage of single battery in v
- \(P_{CB}^{\max }\) :
-
Maximum power of the battery in MW
- \(I_{CB}^{\max }\) :
-
Maximum battery current in Amp.
- \(P_{CB}^{m}\) :
-
Power injected to the grid in MW
- \(\eta_{inv}\) :
-
Inverter efficiency
- \(P_{inv}^{0}\) :
-
Inverter power output in MW
- \(n\) :
-
Number batteries connected in series
- \(BSF_{k}^{n}\) :
-
Bus sensitivity factor
- \(\Delta P_{ij}\) :
-
Change in congested line power flow in MW
- \(\Delta P_{n}\) :
-
Real power injected at bus n
- \(RC\) :
-
Rescheduling cost in $/h
- \(R_{i}^{u}\) :
-
Generator incremental bid in $/MWh
- \(R_{i}^{d}\) :
-
Generator decremental bid in $/MWh
- \(R_{pv}^{{}}\) :
-
Price bid for solar PV system in $/MWh
- \(\Delta P_{gi}^{u}\) :
-
Incremental rescheduled power in MW
- \(\Delta P_{gi}^{d}\) :
-
Decremental rescheduled power in MW
- \(F_{t}^{\max }\) :
-
Maximum power flowing limit in MVA
- \(F_{t}\) :
-
Actual power flowing in the line in MVA
- \(G_{ij}\) :
-
Conductance of the transmission system
- \(B_{ij}^{{}}\) :
-
Susceptance of transmission system
- \(N_{g}\) :
-
Total number of generator bus
- \(N_{l}\) :
-
Total number of load bus
- \(N_{t}\) :
-
Total number of transmission lines
- \(VP_{j}\) :
-
Penalty term for bus voltage limit violation
- \(QP_{j}\) :
-
Penalty term for reactive power violation
- \(FP_{j}\) :
-
Penalty term for line limit violation
- \(cz_{j}^{n}\) :
-
Chaotic variable
- Dmin :
-
Dimension
- \(r_{1} ,r_{2}\) :
-
Random vectors in the range [0,1]
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Paul, K. Modified grey wolf optimization approach for power system transmission line congestion management based on the influence of solar photovoltaic system. Int J Energy Environ Eng 13, 751–767 (2022). https://doi.org/10.1007/s40095-021-00457-2
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DOI: https://doi.org/10.1007/s40095-021-00457-2