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Power-flow study

About: Power-flow study is a research topic. Over the lifetime, 8091 publications have been published within this topic receiving 155053 citations. The topic is also known as: load-flow study.


Papers
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Journal ArticleDOI
TL;DR: In this article, a new algorithm for network reconfiguration based on maximization of system loadability is presented, which is tested on 33-bus and 69-bus radial distribution networks, each having 5-tie switches.

95 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present a reliability calculation method for the generation system that incorporates the frequency and duration of unit outages and includes consideration of the loads, which leads to calculated generation reliability measures which are the availability, frequency of occurence, and mean duration of reserve states.
Abstract: As a goal, the evaluation and computation of electric power system reliability requires that a consistent technique be used for all portions?generation, transmission, and distribution. At present, a number of different methods are used for the generation system, while the frequency and duration of outages seems to be developing as a standard measure for the analysis of the distribution system. This paper and a subsequent one will present a reliability calculation method for the generation system that incorporates the frequency and duration of unit outages and includes consideration of the loads. This method leads to calculated generation reliability measures which are the availability, frequency of occurence, and mean duration of reserve states. These are cumulative states in that they specify system reserve conditions of a given magnitude or less. This paper is concerned with the procedure for calculating the availability, frequency, and outage duration for a number of generating units connected in parallel to form a single system. Numerical data are used to illustrate the technique and make comparisons with other methods.

94 citations

Journal ArticleDOI
TL;DR: In this article, the authors proposed a model to study the effects of power exchange between the grid and EVs on the power system demand profile, the operation stability index, and the reliability indices.

94 citations

Journal ArticleDOI
TL;DR: In this paper, the authors presented an enhanced control for HVDC systems employing hybrid modular multilevel converters (MMCs) during asymmetrical dc voltage faults, which can operate continuously with adjustable active power and controllable reactive power by controlling upper and lower arms of the converter asymmetrically during a fault period.
Abstract: This paper presents an enhanced control for HVDC systems employing hybrid modular multilevel converters (MMCs) during asymmetrical dc voltage faults The characteristics of pole-to-ground (PTG) fault under different system grounding schemes are analyzed Then, the principle of enhanced control strategy to deal with the PTG fault is presented for a hybrid-MMC-based HVDC system with symmetrical monopolar configuration A new control variable is proposed on the arm voltages to distribute the power transmitted from the ac side between the upper and lower arms By adopting the enhanced control, the overvoltage and the fault current can be eliminated when a PTG fault occurs Furthermore, the hybrid-MMC-based HVDC system can operate continuously with adjustable active power and controllable reactive power by controlling the upper and lower arms of the converter asymmetrically during a fault period Finally, the feasibility of the proposed control scheme is verified by simulation results in PSCAD/EMTDC

93 citations

Journal ArticleDOI
TL;DR: In this article, the authors present an efficient approach to system restoration from a complete collapse under peak and light load conditions, developed at Potomac Electric Power Company (PEPCo).
Abstract: The extended duration of recent major power system disturbances have indicated the need for development of system restoration plans (SRP), which would minimize the time required for restoration of service. This paper presents an efficient approach to SRP, from a complete collapse under peak-and light-load conditions, developed at Potomac Electric Power Company (PEPCo). The method is based on: (a) the combined effort of operating personnel and system analysts, (b) the access to data available from the on-line computer facilities, and (c) the use of an interactive load flow program. The SRP development procedure and the results described in this paper are of general interest in that they can be adopted and applied to the other electric systems.

93 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202325
202283
2021162
2020179
2019228
2018221