Coordinated Dispatch Optimization between the Main Grid and Virtual Power Plants Based on Multi-Parametric Quadratic Programming

Abstract

Virtual power plants (VPPs) are a critical technology for distribution systems that can integrate various renewable energy resourcescontrollable loads and energy storage systems into one specific power plant through a distributed energy management system. This paper proposes a coordinated dispatch optimization model between the main grid and VPPs aiming to minimize both the power generation cost and total system active loss. When the time of the equivalent dispatching model is not divisible due to the existence of a time coupling constraint inside the VPPs, this model can obtain the global optimal solution through iteration between the main grid and the VPPs. By employing multi-parametric quadratic programming to obtain accurate critical domains and optimal cost functions, the convergence speed and stability are significantly improved. Additionally, a reactive power and voltage optimization technique leveraging the generalized Benders decomposition is presented for the coordination of the main grid and the VPPs. Moreover, the impact of distributed energy resource (DER) clusters on the main grid was studied, from which we proved that the proposed approach can expeditiously abate energy production expenditure and system active dissipation whilst enhancing the system equilibrium.

A Non-Iterative Coordinated Scheduling Method for a AC-DC Hybrid Distribution Network Based on a Projection of the Feasible Region of Tie Line Transmission Power

“…The mapping information obtained is uploaded to the coordination center for analysis, and dispatch instructions are issued to the distribution network to complete the optimal dispatch of the interconnected power grid. The multi-parameter programming approach translates the operation limitations and cost information of the network to the boundary [29]. However, the presented feasible region and cost information are inaccurate, and this solution cannot handle the nonlinear issue of the hybrid distribution network.…”

Power system operational reliability assessment based on the data center energy consumption elastic space

“…Thus, the private data can be effectively protected. Some studies employ those methods in cross-regional economic dispatch, integrated energy systems, and other fields (Tan et al, 2019;Wu et al, 2023a;Yang et al, 2023). Currently, a substantial amount of literature focuses on data center load flexibility and conducts research on data center micro-grid planning, scheduling, operation, market participation, etc.…”