Results 51 to 60 of about 10,981,728 (293)

Application of non-linear programming for large-scale AC-DC power flow analysis [PDF]

open access: yes, 2012
This paper proposes a robust, non-divergent model for large-scale AC-DC power flow analysis. By introducing relaxation variables into power flow equations, the conventional power flow model is turned into a non-linear programming model to minimize the L2
Qin, Z, Yunhe Hou, Hou, Y, Zhijun Qin
core   +1 more source

Error analysis and improvement framework for linear power flow models under wide operating conditions

open access: yesFrontiers in Energy Research
Linear power flow models are typically derived through a Taylor expansion of specific state variable functions, serving as numerical approximations valid within a finite neighborhood of an initial operating point.
Yang Wu   +4 more
doaj   +1 more source

A Data-Driven Optimal Power Flow Model under Partial Observability

open access: yesZhongguo dianli, 2023
The linearized power flow (PF) model is mainly used to make the optimal power flow (OPF) problem convex. However, existing data-driven linear PF models are mostly based on complete system measurement data.
Penghua LI, Zhuoran SONG, Wenchuan WU
doaj   +1 more source

Exercise Capacity, Physical Activity, Fatigue, and Neurocognitive Function in Adult Survivors of Childhood Acute Lymphoblastic Leukemia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Adult survivors of childhood acute lymphoblastic leukemia (ALL) are at risk of reduced exercise capacity, decreased physical activity levels, persistent fatigue, and neurocognitive deficits. The aim was to investigate exercise capacity and physical activity levels of adult survivors of childhood ALL and their associations with ...
Laura Jess   +5 more
wiley   +1 more source

Distribution Optimal Power Flow

open access: yes, 2007
This paper presents a new and efficient methodology for network reconfiguration with optimal power flow based on Benders Decomposition approach. The objective minimizes the power losses, balancing load among the feeders and subject to the constraints ...
H. M. Khodr, J. Pereira, M. A. Matos
core   +1 more source

Uncovering Inequities: The Role of Social Determinants of Health in Hospitalized Adolescents and Young Adults With Heavy Menstrual Bleeding

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Heavy menstrual bleeding (HMB) is a common condition among adolescents and young adults (AYAs) and is the leading cause of iron deficiency anemia (IDA) in this population. Growing evidence suggests that social determinants of health (SDOH) influence menstrual bleeding patterns, access to care, and treatment. However, no studies have
Maria Carter‐Febres   +6 more
wiley   +1 more source

Effectiveness of Resistance Intradialytic Exercise Compared to Aerobic Intradialytic Exercise for Patients With Chronic Kidney Disease: A Randomized Controlled Clinical Trial

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida   +6 more
wiley   +1 more source

Komputasi Aliran Daya Optimal Sistem Tenaga Skala Besar dengan Metode Primal Dual Interior Point

open access: yesJurnal Rekayasa Elektrika, 2016
This paper focuses on the use of Primal Dual Interior Point method in the analysis of optimal power flow. Optimal power flow analysis with Primal Dual Interior Point method then compared with Linear Programming Method using Matpower program.
Syafii Syafii, Ikhwannul Kadri Masrul
doaj   +1 more source

Large-scale security constrained optimal reactive power flow for operational loss management on the GB electricity transmission network [PDF]

open access: yes, 2010
This thesis was submitted for the degree of Engineering Doctorate and awarded by Brunel University, 22/12/2010.The transmission of power across the GB transmission system, as operated by National Grid, results in inevitable loss of electrical power ...
Macfie, Peter
core   +6 more sources

Linear Model for Optimal Distributed Generation Size Predication

open access: yesAdvances in Electrical and Electronic Engineering, 2017
This article presents a linear model predicting optimal size of Distributed Generation (DG) that addresses the minimum power loss. This method is based fundamentally on strong coupling between active power and voltage angle as well as between reactive ...
Ahmed Al Ameri, Cristian Nichita
doaj   +1 more source

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