Journal ArticleDOI
Hierarchical control of droop-controlled DC and AC microgrids — a general approach towards standardization
Josep M. Guerrero,Juan C. Vasquez,Jose Matas,L.G. de Vicuna,Miguel Castilla +4 more
- Vol. 58, Iss: 1, pp 158-172
Reads0
Chats0
TLDR
The hierarchical control derived from ISA-95 and electrical dispatching standards to endow smartness and flexibility to MGs is presented and results are provided to show the feasibility of the proposed approach.Abstract:
DC and AC Microgrids are key elements to integrate renewable and distributed energy resources as well as distributed energy storage systems. In the last years, efforts toward the standardization of these Microgrids have been made. In this sense, this paper present the hierarchical control derived from ISA-95 and electrical dispatching standards to endow smartness and flexibility to microgrids. The hierarchical control proposed consist of three levels: i) the primary control is based on the droop method, including an output impedance virtual loop; ii) the secondary control allows restoring the deviations produced by the primary control; and iii) the tertiary control manage the power flow between the microgrid and the external electrical distribution system. Results from a hierarchical-controlled microgrid are provided to show the feasibility of the proposed approach.read more
Citations
More filters
Proceedings ArticleDOI
An islanding microgrid reactive power sharing scheme enhanced by programmed virtual impedances
TL;DR: In this article, an improved power control approach was proposed to address the load sharing problems in islanded microgrids. But, the proposed method first estimates distributed generation (DG) unit feeder impedances through measuring low order point of common coupling (PCC) harmonic voltages and DG unit line harmonic currents.
Journal ArticleDOI
Pinning-Based Hierarchical and Distributed Cooperative Control for AC Microgrid Clusters
TL;DR: A pinning-based hierarchical and distributed cooperative control strategy for AC MGC, which includes distributed generation (DG)-layer, MG-layer, and MGC-layer controls, and a detailed small-signal stability analysis to evaluate the system dynamic performance.
Journal ArticleDOI
An Improved Droop Control Strategy for VSC-Based MVDC Traction Power Supply System
TL;DR: An improved droop control method is proposed to obtain a better performance of system operation for the specific supply environment without any communication links and improve catenary network voltage control dynamics by using voltage-shifting and load current feedforward control approaches simultaneously.
Journal ArticleDOI
Linear State-Feedback Primary Control for Enhanced Dynamic Response of AC Microgrids
TL;DR: The linear quadratic Gaussian/loop-transfer recovery is adopted as the design procedure to optimize the trajectory of the state variables subject to a desirable actuation effort, yielding a solution that is robust to model uncertainties.
Journal ArticleDOI
Probabilistic optimal power flow in islanded microgrids with load, wind and solar uncertainties including intermittent generation spatial correlation
TL;DR: PEM compounded with Nataf Transformation for POPF to handle spatial correlations in renewable generations to solve the probabilistic-optimal power flow problem with multiple objectives formulated in an islanded microgrid with droop coordinated DGs.
References
More filters
Book
Power System Stability and Control
TL;DR: In this article, the authors present a model for the power system stability problem in modern power systems based on Synchronous Machine Theory and Modelling, and a model representation of the synchronous machine representation in stability studies.
Journal ArticleDOI
The path of the smart grid
TL;DR: The electrical power industry is undergoing rapid change as discussed by the authors, and the major drivers that will determine the speed at which such transformations will occur will be the rising cost of energy, the mass electrification of everyday life, and climate change.
Journal ArticleDOI
Defining control strategies for MicroGrids islanded operation
TL;DR: In this article, the feasibility of control strategies to be adopted for the operation of a microgrid when it becomes isolated is evaluated and the need of storage devices and load shedding strategies is evaluated.
Journal ArticleDOI
Control of parallel connected inverters in stand-alone AC supply systems
TL;DR: In this article, a control scheme for parallel-connected inverters in a standalone AC supply system is presented, which uses feedback of only those variables that can be measured locally at the inverter and does not need communication of control signals between the inverters.
Journal ArticleDOI
Output impedance design of parallel-connected UPS inverters with wireless load-sharing control
TL;DR: This paper deals with the design of the output impedance of uninterruptible power system (UPS) inverters with parallel-connection capability, and proposes novel control loops to achieve both stable output impedance and proper power balance.