Distributed Dynamic Economic Dispatch for Active Distribution Networks

Abstract

This paper proposes a distributed multi-objective dynamic economic dispatch method which can minimize the operating costs for the active distribution networks (ADN) while the power flow constraints and security constraints are taken into account. With a linear approximation of the algebraic power flow equations, the nonlinear optimization problem is transformed into a linear constrained quadratic program (LCQP). Then the LCQP is decomposed into multiple sub-problems by the idea of coordinated zone optimization. Each sub-problem can be solved with very little interchange of boundary information with neighbors based on the alternating direction method of multipliers (ADMM). Finally, with numerical simulations in IEEE 33-bus system, the correctness of the method is verified