IEEE Transactions on Power Systems
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Understanding the Benefits of Dynamic Line Rating Under Multiple Sources of Uncertainty
IEEE Transactions on Power Systems - Tập 33 Số 3 - Trang 3306-3314 - 2018
This paper analyzes the benefits of dynamic line rating (DLR) in the system with high penetration of wind generation. A probabilistic forecasting model for the line ratings is incorporated into a two-stage stochastic optimization model. The scheduling model, for the first time, considers the uncertainty associated with wind generation, line ratings, and line outages to co-optimize the energy produ...... hiện toàn bộ
#Dynamic line rating #probabilistic forecasting #stochastic programming #wind generation
Generation expansion planning: an iterative genetic algorithm approach
IEEE Transactions on Power Systems - Tập 17 Số 3 - Trang 901-906 - 2002
The generation expansion-planning problem (GEP) is a large-scale stochastic nonlinear optimization problem. To handle the problem complexity, decomposition schemes have been used. Usually, such schemes divide the expansion problem into two subproblems: one related to the construction of new plants (investment subproblem) and another dealing with the task of operating the system (operation subprobl...... hiện toàn bộ
#Iterative methods #Genetic algorithms #Linear programming #Large-scale systems #Investments #Biological cells #Power system planning #Uncertainty #Power system reliability #Power generation
Implementation of an A~C~E~/sub 1/ decomposition method
IEEE Transactions on Power Systems - Tập 17 Số 3 - Trang 757-761 - 2002
Having established feasibility and developed a method to decompose control area's A~C~E~/sub 1/ into components attributable to load changes in subareas within the control area, this paper addresses some of the practical issues with an on-line implementation of the A~C~E~/sub 1/ model and the decomposition method. Issues examined here include time-varying system conditions, nonlinearities in the g...... hiện toàn bộ
#Time varying systems #System testing #Control systems #Parameter estimation #Error correction #Frequency response #Nonlinear control systems #Control nonlinearities #Costs #Measurement standards
Artificial neural network-based peak load forecasting using conjugate gradient methods
IEEE Transactions on Power Systems - Tập 17 Số 3 - Trang 907-912 - 2002
The daily electrical peak load forecasting (PLF) has been done using the feed forward neural network (FFNN)-based upon the conjugate gradient (CG) back-propagation methods, by incorporating the effect of 11 weather parameters, the previous day peak load information, and the type of day. To avoid the trapping of the network into a state of local minima, the optimization of user-defined parameters, ...... hiện toàn bộ
#Artificial neural networks #Load forecasting #Gradient methods #Neural networks #Input variables #Principal component analysis #Feeds #Feedforward neural networks #Character generation #Weather forecasting
Probabilistic Scheduling of UFLS to Secure Credible Contingencies in Low Inertia Systems
IEEE Transactions on Power Systems - Tập 37 Số 4 - Trang 2693-2703 - 2022
The reduced inertia levels in low-carbon power grids necessitate explicit constraints to limit frequency’s nadir and rate of change during scheduling. This can result in significant curtailment of renewable energy due to the minimum generation of thermal plants that are needed to provide frequency response (FR) and inertia. Additional consideration of fast FR, a dynamically reduced largest loss an...... hiện toàn bộ
#Inertia #frequency response #stochastic unit commitment #UFLS #wind energy
Data-Driven Representative Day Selection for Investment Decisions: A Cost-Oriented Approach
IEEE Transactions on Power Systems - - 2019
Power system investment planning problems become intractable due to the vast variability that characterizes system operation and the increasing complexity of the optimization model to capture the characteristics of renewable energy sources. In this context, making optimal investment decisions by considering every operating period is unrealistic and inefficient. The conventional solution to address...... hiện toàn bộ
#Clustering #dimensionality reduction #investment planning #renewable energy sources #representative days
Uncertainty-Aware Transient Stability-Constrained Preventive Redispatch: A Distributional Reinforcement Learning Approach
IEEE Transactions on Power Systems - Tập 40 Số 2 - Trang 1295-1308 - 2025
Transient stability-constrained preventive redispatch plays a crucial role in ensuring power system security and stability. Since redispatch strategies need to simultaneously satisfy complex transient constraints and the economic need, model-based formulation and optimization become extremely challenging. In addition, the increasing uncertainty and variability introduced by renewable sources start...... hiện toàn bộ
#Uncertainty #transient stability #preventive redispatch #distributional reinforcement learning #graph neural network
A study on determination of interface flow limits in the KEPCO system using modified continuation power flow (MCPF)
IEEE Transactions on Power Systems - Tập 17 Số 3 - Trang 557-564 - 2002
This paper reports a study on determining steady. state voltage stability limit of interface flow on a set of interface lines between the metropolitan region and the neighboring regions in the Korea Electric Power Corporation (KEPCO). The interface flow limit considering severe contingencies is determined with a concept of interface flow margin, which is the active power flow margin of the key tra...... hiện toàn bộ
#Load flow #Voltage #Power generation #Power engineering and energy #Power transmission lines #Power system management #Power generation economics #Power system stability #Steady-state #Power industry
Optimal Dynamic Line Rating Forecasts Selection Based on Ampacity Probabilistic Forecasting and Network Operators’ Risk Aversion
IEEE Transactions on Power Systems - Tập 34 Số 4 - Trang 2836-2845 - 2019
Real-time current-carrying capacity of overhead conductors is extremely variable due to its dependence on weather conditions, resulting in the use of traditionally conservative static ratings. This paper proposes a methodology for exploiting the latent current-carrying capacity of overhead transmission lines taking into account line ampacity forecasts, power flow simulations, and the network opera...... hiện toàn bộ
#Dynamic line rating #numerical weather predictions #probabilistic forecasts #risk management
Equilibrium of auction markets with unit commitment: the need for augmented pricing
IEEE Transactions on Power Systems - Tập 17 Số 3 - Trang 798-805 - 2002
In this paper, we discuss issues and methods for attaining equilibrium in electric power auction markets with unit commitment. We consider a generation-side competition whereby producers are profit maximizing agents subject to prices only. For expository purposes, we consider the single-period unit commitment problem, which is still quite rich for this presentation. We show that it is possible to ...... hiện toàn bộ
#Pricing #Cost function #Optimal scheduling #Power system economics #Power engineering and energy #Power generation dispatch #Power generation economics #Decision making #Design engineering #Systems engineering and theory
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