Corpus ID: 13413188

Power System Dynamics as Primal-Dual Algorithm for Optimal Load Control

@article{Zhao2013PowerSD,
  title={Power System Dynamics as Primal-Dual Algorithm for Optimal Load Control},
  author={Changhong Zhao and U. Topcu and N. Li and S. Low},
  journal={ArXiv},
  year={2013},
  volume={abs/1305.0585}
}
We formulate an optimal load control (OLC) problem in power networks where the objective is to minimize the aggregate cost of tracking an operating point subject to power balance over the network. We prove that the swing dynamics and the branch power flows, coupled with frequency-based load control, serve as a distributed primal-dual algorithm to solve OLC. Even though the system has multiple equilibrium points, we prove that it nonetheless converges to an optimal point. This result implies… Expand
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32 Citations
Highly Influential Citations
2
Background Citations
14
Methods Citations
12
Results Citations
1

32 Citations

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Citation Type

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Distributed Frequency-Preserving Optimal Load Control
Abstract Frequency control is traditionally done on the generation side. Recently we have formulated an optimal load control (OLC) problem and derived a load-side primary frequency control as a… Expand
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Main advantage of the approach, based on passivity properties of the system, is that it has the potential to deal with more complex models of dynamical networks and fairly rich classes of external perturbations. Expand
Improved Optimal Decentralized Load Modulation for Power System Primary Frequency Regulation
TLDR
Simulation results indicate that enabling a multiobjective optimization-based gain-tuning procedure in the OLC approach can provide better power system frequency regulation and small-signal analysis demonstrates that the improved OLC enhances the system closed-loop performance and stability margins by increasing the damping ratio of the system's critical modes. Expand
Optimal Load-Side Control for Frequency Regulation in Smart Grids
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This paper presents a comprehensive load-side frequency control mechanism that can maintain the grid within operational constraints and proves that it is globally asymptotically stable and robust to unknown load parameters. Expand
Novel load-based control strategies for power system primary frequency regulation
TLDR
This thesis proposes three main solutions to overcome the limitations of decentralized load control approaches and shows by simulation that in comparison with OLC, IOLC can achieve a better generalization performance in the case of turbine-governor control action whether enabled or disabled. Expand
Fair load-side control for frequency regulation in smart grids
Frequency control rebalances supply and demand while maintaining the network state within operational margins. It is implemented using fast ramping reserves that are expensive and non-renewable, and… Expand
The Optimal Steady-State Control Problem by Liam
Many engineering systems — including electrical power networks, chemical processing plants, and communication networks — have a well-defined notion of an “optimal” steadystate operating point. This… Expand
Simulation-based investigation of optimal demand-side primary frequency regulation
  • I. Kamwa, A. Delavari
  • Engineering, Computer Science
  • 2016 IEEE Canadian Conference on Electrical and Computer Engineering (CCECE)
  • 2016
TLDR
This paper investigates the application of optimal demand side frequency based load control (OLC) for primary frequency regulation by comparing the performance of OLC and turbine governor action to help power utilities seeking improvement of the efficiency of their power plants. Expand
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