Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Disfani, Vahid R."'
Photovoltaic (PV) smart inverters can improve the voltage profile of distribution networks. A multi-objective optimization framework for coordination of reactive power injection of smart inverters and tap operations of on-load tap changers (OLTCs) fo
Externí odkaz:
http://arxiv.org/abs/2006.14382
Autor:
Khanal, Saroj, Disfani, Vahid R.
Unlike conventional converters, modular multilevel converter (MMC) has a higher switching frequency -- which has direct implication on important parameters like converter loss and reliability -- mainly due to increased number of switching components.
Externí odkaz:
http://arxiv.org/abs/1912.08436
Autor:
Khanal, Saroj, Disfani, Vahid R.
This paper proposes a novel switching algorithm for modular multilevel converters (MMCs) that significantly reduces the switching frequency while fulfilling all control objectives required for their proper operation. Unlike in the conventional capaci
Externí odkaz:
http://arxiv.org/abs/1912.08433
Publikováno v:
Li, Changfu, Vahid R. Disfani, Zachary K. Pecenak, Saeed Mohajeryami, and Jan Kleissl. "Optimal OLTC voltage control scheme to enable high solar penetrations." Electric Power Systems Research 160 (2018): 318-326
High solar Photovoltaic (PV) penetration on distribution systems can cause over-voltage problems. To this end, an Optimal Tap Control (OTC) method is proposed to regulate On-Load Tap Changers (OLTCs) by minimizing the maximum deviation of the voltage
Externí odkaz:
http://arxiv.org/abs/1804.06025
Battery Energy Storage Systems (BESS) can mitigate effects of intermittent energy production from renewable energy sources and play a critical role in peak shaving and demand charge management. To optimally size the BESS from an economic perspective,
Externí odkaz:
http://arxiv.org/abs/1702.08598
The variability of solar energy in off-grid systems dictates the sizing of energy storage systems along with the sizing and scheduling of loads present in the off-grid system. Unfortunately, energy storage may be costly, while frequent switching of l
Externí odkaz:
http://arxiv.org/abs/1702.00870
Autor:
Habib, Abdulelah H., Ratnam, Elizabeth L, Disfani, Vahid R., Kleissl, Jan, de Callafon, Raymond A.
Despite the recent rapid adoption of rooftop solar PV for residential customers, islanded operation during grid outages remains elusive for most PV owners. In this paper we consider approaches to improve the reliability of electricity supply in the c
Externí odkaz:
http://arxiv.org/abs/1612.04881
Considering the intermittency of renewable energy systems, a sizing and scheduling model is proposed for a finite number of static electric loads. The model objective is to maximize solar energy utilization with and without storage. For the applicati
Externí odkaz:
http://arxiv.org/abs/1607.07362
Autor:
Habib, Abdulelah H, Pecena, Zachary K, Disfani, Vahid R, Kleissl, Jan, de Callafon, Raymond A.
This paper presents and evaluates the performance of an optimal scheduling algorithm that selects the on/off combinations and timing of a finite set of dynamic electric loads on the basis of short term predictions of the power delivery from a photovo
Externí odkaz:
http://arxiv.org/abs/1512.09017
Two types of privacy-preserving decision making paradigms for utility-community interactions for multi-horizon operation are examined in this paper. In both designs, communities with renewable energy sources, distributed generators, and energy storag
Externí odkaz:
http://arxiv.org/abs/1503.09087