دانشجويان مهندسي برق

Bi-Level Expansion Planning of Power System Considering Wind Farms based on Economic and Technical Objectives of Transmission System Operator

 
Abstract
Generation and transmission expansion planning in the presence of wind farms is considered in the present study based on economic, operation, security, and reliability goals of the transmission system operator's. The design is a bi-level optimization, where the upper level describes the formulation of power system expansion planning to minimize the construction and operation cost while observing the investment budget limits. In the lower-level problem, the economic reliable-secure operation is stated in the transmission network. The objective functions of the problem aim to minimize the operation cost, energy loss, expected energy not-supplied, and voltage security index. Constraints of this problem include AC optimal power flow model, security and reliability limits. In the following, scheme extracts a convex-linear model for the formulation using the conventional linearization technique. Pareto optimization driven by the sum of weighted functions provides a single-objective model for the lower-level problem, and the Karush-Kuhn-Tucker technique presents a single-level model for the design. Stochastic optimization has been adopted to model load, wind farms, and network equipment availability uncertainties. In the end, the study cases yielded the numerical findings that showcase the efficacy of the proposed scheme in taking the desired economic, operational, security, and reliability status of the transmission network. This is particularly true in situations where there is appropriate generation and transmission expansion.
 
Keywords− Bi-level multi-objective optimization, Economic reliable-secure operation, Expansion planning,  Stochastic optimization, Wind farms.

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713 viewsNov 30, 2023 at 19:27

Bi-Level Expansion Planning of Power System Considering Wind Farms based on Economic and Technical Objectives of Transmission System Operator

 
Abstract
Generation and transmission expansion planning in the presence of wind farms is considered in the present study based on economic, operation, security, and reliability goals of the transmission system operator's. The design is a bi-level optimization, where the upper level describes the formulation of power system expansion planning to minimize the construction and operation cost while observing the investment budget limits. In the lower-level problem, the economic reliable-secure operation is stated in the transmission network. The objective functions of the problem aim to minimize the operation cost, energy loss, expected energy not-supplied, and voltage security index. Constraints of this problem include AC optimal power flow model, security and reliability limits. In the following, scheme extracts a convex-linear model for the formulation using the conventional linearization technique. Pareto optimization driven by the sum of weighted functions provides a single-objective model for the lower-level problem, and the Karush-Kuhn-Tucker technique presents a single-level model for the design. Stochastic optimization has been adopted to model load, wind farms, and network equipment availability uncertainties. In the end, the study cases yielded the numerical findings that showcase the efficacy of the proposed scheme in taking the desired economic, operational, security, and reliability status of the transmission network. This is particularly true in situations where there is appropriate generation and transmission expansion.
 
Keywords− Bi-level multi-objective optimization, Economic reliable-secure operation, Expansion planning,  Stochastic optimization, Wind farms.

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