Journal ArticleDOI
Micro-grid autonomous operation during and subsequent to islanding process
Reads0
Chats0
TLDR
In this paper, the authors investigated preplanned switching events and fault events that lead to islanding of a distribution subsystem and formation of a micro-grid, and they concluded that an appropriate control strategy for the power electronically interfaced DG unit can ensure stability of the microgrid and maintain voltage quality at designated buses, even during islanding transients.Abstract:
This paper investigates (i) preplanned switching events and (ii) fault events that lead to islanding of a distribution subsystem and formation of a micro-grid. The micro-grid includes two distributed generation (DG) units. One unit is a conventional rotating synchronous machine and the other is interfaced through a power electronic converter. The interface converter of the latter unit is equipped with independent real and reactive power control to minimize islanding transients and maintain both angle stability and voltage quality within the micro-grid. The studies are performed based on a digital computer simulation approach using the PSCAD/EMTDC software package. The studies show that an appropriate control strategy for the power electronically interfaced DG unit can ensure stability of the micro-grid and maintain voltage quality at designated buses, even during islanding transients. This paper concludes that presence of an electronically-interfaced DG unit makes the concept of micro-grid a technically viable option for further investigations.read more
Citations
More filters
Journal ArticleDOI
Multi-objective micro-grid planning by NSGA-II in primary distribution system
TL;DR: In this paper, a two-stage multi-objective micro-grid (MG) planning in a primary distribution system is proposed, where the optimal region for MG is identified by the loss sensitivity factor and a Pareto-based non-dominated sorting genetic algorithm II is proposed to determine locations and sizes of a specified number of distributed generator units within MG.
Journal ArticleDOI
Nonlinear Lyapunov Stability Analysis of Seven Models of a DC/AC Droop Controlled Inverter Connected to an Infinite Bus
TL;DR: This paper presents the 13th-order nonlinear model of a dc/ac droop controlled inverter connected to an infinite bus to address inverter stability and aims to present the best model to use for time domain simulations and domain of attraction estimation.
Journal ArticleDOI
RT-HIL Implementation of the Hybrid Synchrophasor and GOOSE-Based Passive Islanding Schemes
TL;DR: In this paper, a real-time hardware-in-the-loop performance assessment of three different passive islanding detection methods for local and wide-area synchrophasor measurements is carried out.
Proceedings ArticleDOI
Investigation of droop characteristics and X/R ratio on small-signal stability of autonomous Microgrid
TL;DR: In this article, the small-signal or steady-state stability analysis of an autonomous microgrid and the impact of various parameters are investigated, such as reverse droop characteristics and connecting lines with different X/R ratio.
Proceedings ArticleDOI
Control method of the transient compensation process of a hybrid energy storage system based on battery and Ultra-capacitor in Micro-grid
TL;DR: In this article, the authors presented the research on the hybrid energy storage system in a micro-grid with a DC Bus and an AC bus, which is based on battery and ultra-capacitor.
References
More filters
Book
Electrical Power Systems Quality
TL;DR: In this paper, the authors present a power quality evaluation procedure for the purpose of measuring the power quality of a power supply. But, they do not define the specific classes of power quality problems.
Vector analysis and control of advanced static VAr compensators
TL;DR: The advanced static VAr compensator (ASVC) as mentioned in this paper is based on the principle that a self-commutating static inverter can be connected between three-phase AC power lines and an energy storage device, such as an inductor or capacitor, and controlled to draw mainly reactive current from the lines.
Journal ArticleDOI
Vector analysis and control of advanced static VAr compensators
C. Schauder,H. Mehta +1 more
TL;DR: In this paper, two fundamentally different types of invertor can be used for this purpose, one providing control of output voltage magnitude and phase angle, and the other having only phase angle control.
Journal ArticleDOI
Protection against loss of utility grid supply for a dispersed storage and generation unit
TL;DR: In this paper, the requirements of an islanding, or "loss of grid", protection for a dispersed storage and generation unit are examined, and the principal methods used for this type of relaying are outlined.
Proceedings ArticleDOI
Distributed energy sources: technical challenges
TL;DR: In this article, the main related technical issues are discussed together with the DGs modelling requirements for their analysis, and the main technical issues of the micro-grid are discussed and discussed in detail.