In the context of active distribution networks, AC Optimal Power Flow (OPF) has shown great potential to calculate setpoints for controllable devices. Although considerable literature exists, temporal aspects that may affect actual execution these are rarely investigated. Due diverse operating characteristics devices (i.e., delays, ramp rates and deadbands), when executed by multiple without ad...

Oil palm frond (OPF) juice is a potential industrial fermentation substrate as it has high sugars content and the OPF are readily available daily. However, maximum sugars yield and storage stability of the OPF juice are yet to be determined. This study was conducted to determine the effect of physical pretreatment and storage duration of OPF petiole on sugars yield. Storage stability of OPF jui...

This paper investigates the relationship between frequency support by voltage-source converter based high-voltage direct current (VSC-HVDC) systems and deloaded wind power operation considering stability constraints. The is incorporated as additional constraints in optimal flow (OPF) analysis. reserve capacity of plants should be provided for support, which requires output suppression during st...

This paper presents a combined framework for power distribution network expansion planning (DNEP) and energy storage systems (ESSs) allocation in active networks (ADNs) hosting large amount of photovoltaic (PV) generations loads. The proposed DNEP ensures the reliable operation targeted ADN with objective achieving its dispatchability while minimizing grid losses by determining optimal to conne...

In this study, an injectable, biodegradable hydrogel composite of oligo[poly(ethylene glycol) fumarate] (OPF) was investigated as a carrier of mouse embryonic stem cells (mESCs) for the treatment of myocardial infarction (MI). The OPF hydrogels were used to encapsulate mESCs. The cell differentiation in vitro over 14 days was determined via immunohistochemical examination. Then, mESCs encapsula...

Though the convex optimization has been widely used in power systems, it still cannot guarantee to yield a tight (accurate) solution some problems. To mitigate this issue, paper proposes an ensemble learning based approximation for alternating current (AC) flow equations that differs from existing relaxations. The proposed approach is on three-phase quadratic rectangular coordinates. develop da...

In this paper, the optimal power flow (OPF) problem is augmented to account for the costs associated with the loadfollowing stability of a power network. Load-following stability costs are expressed through the linear quadratic regulator (LQR). The power network is described by a set of nonlinear differential algebraic equations (DAEs). By linearizing the DAEs around a known equilibrium, a line...

The optimal power flow (OPF) problem seeks to control the generation/consumption of generators/loads to optimize certain objectives such as to minimize the generation cost or power loss in the network. It is becoming increasingly important for distribution networks due to the emerging distributed generation and controllable loads. In this paper, we study the OPF problem in distribution networks...

This paper presents a new method for the decentralized solution of the dc optimal power flow (OPF) problem in large interconnected power systems. The method decomposes the overall OPF problem of a multiarea system into independent OPF subproblems, one for each area. The solutions of the OPF subproblems of the different areas are coordinated through a pricing mechanism until they converge to the...

Electricity industries around the world have significantly restructured in order to improve their economic efficiency, reliability of power systems and accountability. Accurate prediction of day-ahead electricity nodal price has now become an important activity to address the system operations and price volatility in the restructured electricity market. This will facilitate the market participa...