Abstract
This chapter presents a methodology for solving AC optimal power flow problem using demand-side management strategy. A single objective function, which is composed of fuel cost of thermal power plants, is minimized. Ramp down/up rate limits, active/reactive power generation capacity, and balance equation are considered as constraints of optimization problem. Active power demand of each bus is flexible and can maximally be reduced to 80% of its forecasted value. Similarly, it is supposed that electricity consumption at each bus can be increased up to 1.2% of its base value. Hours and values of active load increase/decrease at each bus are determined as decision variables in a way that the total amount of the load increase over the study horizon is equal to the amount of the load decrease in the same operating period. A nonlinear programming problem is developed under general algebraic mathematical modeling system (GAMS) to find how much $ is saved in AC optimal power flow analysis, while demand is managed at each bus.
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Abbreviations
- i, j :
-
Bus
- g :
-
Thermal power plant
- t :
-
Time
- α :
-
Maximum percentage of active demand decrease and increase at bus i
- ag, bg, cg:
-
Fuel consumption factors
- DSMi, t:
-
Value of active demand increase/decrease at bus i and time t
- \( {P}_{i,t}^0 \) :
-
Base active demand of bus i at hour t
- \( {P}_i^{g,\max } \) :
-
Maximum value of active power generated by unit g at bus i
- \( {P}_i^{g,\min } \) :
-
Minimum value of active power generated by unit g at bus i
- \( {P}_{ij}^{\mathrm{max}} \) :
-
Active power capacity of transmission line i to j
- Q i, t :
-
Reactive power demand of bus i at time t
- r ij :
-
Resistance of transmission line i to j
- x ij :
-
Reactance of transmission line i to j
- δ i, t :
-
Bus voltage angle
- I ij, t :
-
Current passes through transmission line i to j
- OF:
-
Daily cost
- P i, t :
-
Active power demand of bus i at time t
- \( {P}_{i,t}^g \) :
-
Active power generation of gas-fired power plant g
- \( {P}_{i,t}^{\mathrm{w}} \) :
-
Wind power production at bus i and hour t
- \( {Q}_{i,t}^g \) :
-
Reactive power generation of gas-fired power plant g, which is connected to bus i
- S ij, t :
-
Complex power transmitted from bus i to j
- V i, t :
-
Bus voltage magnitude
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Jabari, F., Mohammadpourfard, M., Mohammadi-Ivatloo, B. (2020). AC Optimal Power Flow Incorporating Demand-Side Management Strategy. In: Nojavan, S., Zare, K. (eds) Demand Response Application in Smart Grids. Springer, Cham. https://doi.org/10.1007/978-3-030-32104-8_7
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DOI: https://doi.org/10.1007/978-3-030-32104-8_7
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