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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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Proceedings ArticleDOI
07 Nov 2005
TL;DR: The numeric simulation for a 5-bus system shows that this MPSO algorithm is feasible to solve optimal power flow problem and the ability to find the global optimum is increased.
Abstract: A modified particle swarm optimization (MPSO) algorithm is presented. In the new algorithm, particles not only studies from itself and the best one but also from other individuals. By this enhanced study behavior, the opportunity to find the global optimum is increased and the influence of the initial position of the particles is decreased At last, the method adopting MPSO algorithm to solve the optimal power flow problem is given. The numeric simulation for a 5-bus system shows that this algorithm is feasible to solve optimal power flow problem.

70 citations

Journal ArticleDOI
TL;DR: The dq modelling approach is applied to derive individual power system component models and to constitute the corresponding generalized power system model as a powerful and flexible stability analysis tool.
Abstract: The paper deals with the small-signal stability analysis of aircraft ac frequency-wild power systems representing a real ac-dc hybrid distribution architecture with a multiplicity of actuators, aircraft loads, and bus geometries. The dq modelling approach is applied to derive individual power system component models and to constitute the corresponding generalized power system model as a powerful and flexible stability analysis tool. The element models can be interconnected in an algorithmic way according to a variety of the architecture selected. Intensive time-domain simulation and experimental results are used to verify the theoretical results. It is also shown how the proposed approach can be used to predict instability due to possible variations in operating points and system parameters.

70 citations

Journal ArticleDOI
01 May 1996
TL;DR: In this paper, an ILM scheme is proposed using dynamic optimal power flow analysis, which enables real-time selection of interruptible loads incorporating power network constraints and dynamic restriction on generation, viz. ramp-rate limits.
Abstract: An interruptible load management (ILM) scheme is proposed using dynamic optimal power flow analysis. It enables real-time selection of interruptible loads incorporating power network constraints and dynamic restriction on generation, viz. ramp-rate limits. The model provides an analytical framework for addressing several important issues associated with optimal selection of load curtailment, e.g. advance notification for load curtailment, short-term price discounts and long-term discounts on demand-charges, power factor of the load and customer-cost associated with the load to be curtailed, and power system security. A six-bus example illustrates the proposed methodology.

70 citations

Journal ArticleDOI
TL;DR: In this article, a new power flow model has been developed for the steady state behavior of large complex power systems, it allows the study of power flow under abnormal conditions as well as normal conditions.
Abstract: A new power flow model has been developed for the steady state behavior of large complex power systems, it allows the study of power flow under abnormal conditions as well as normal conditions. It is also shown how Newton's method can be efficiently applied to the model to provide exact and practicable solutions for a new steady state following the disturbance. Advanced applications are introduced which show how the steady state model can be combined with a dynamic simulation program.

70 citations

Journal ArticleDOI
TL;DR: A combined process for design and simulation of both communication network and power network has been presented with the objective of damping interarea oscillations, and a method to determine the optimal location of data routing hubs so as to minimize the volume of communications is proposed.
Abstract: Due to the rapid deployment of phasor measurement units (PMUs) on large power grids, the system operators now have access to high speed high resolution data. A new class of monitoring and control applications are made possible with the PMUs. Although PMU based monitoring systems have been well developed, implementations of PMU based fast acting closed loop wide area control systems are relatively rare. To meet the stringent latency requirements of a wide area controller the communication and power infrastructures have to collaborate strongly. In this paper, a combined process for design and simulation of both communication network and power network has been presented with the objective of damping interarea oscillations. A method to determine the optimal location of data routing hubs so as to minimize the volume of communications is also proposed. The IEEE 118 bus system is used to study the performance of communication system and the wide area power damping control system on both centralized and decentralized topologies, and the results are discussed. One of the conclusions of the paper is that the decentralized communication architectures involving data routing hubs are better suited for control applications requiring fast control actions.

69 citations


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