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Optimal Power Flow in DC Networks with Robust Feasibility and Stability Guarantees

Journal Article · · IEEE Transactions on Control of Network Systems
 [1];  [2];  [3];  [4];  [5];  [1]
  1. Argonne National Lab. (ANL), Lemont, IL (United States)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  3. Georgia Institute of Technology, Atlanta, GA (United States)
  4. Xi'an Jiaotong Univ., Shaanxi (China)
  5. Temple Univ., Philadelphia, PA (United States)

With high penetrations of renewable generation and variable loads, there is significant uncertainty associated with power flows in DC networks such that stability and operational constraint satisfaction are of concern. Most existing DC network optimal power flow (DN-OPF) formulations assume exact knowledge of loading conditions and do not provide stability guarantees. Here, in contrast, this paper studies a DN-OPF formulation which considers both stability and operational constraint satisfaction under uncertainty. The need to account for a range of uncertainty realizations in this paper's robust optimization formulation results in a challenging semi-infinite program (SIP). The proposed solution algorithm reformulates this SIP into a computationally tractable problem by constructing a tight convex inner approximation of the stability set using sufficient conditions for the existence of a feasible and stable power flow solution. Optimal generator set-points are obtained by optimizing over the proposed convex stability set. The validity and effectiveness of the propose algorithm is demonstrated through various DC networks adapted from IEEE test cases.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1834045
Alternate ID(s):
OSTI ID: 1960312
Report Number(s):
NREL/JA-5D00-81591; MainId:82364; UUID:07a415db-3b6f-4158-bb5c-eecda9a5c4b8; MainAdminID:63386
Journal Information:
IEEE Transactions on Control of Network Systems, Journal Name: IEEE Transactions on Control of Network Systems Journal Issue: 2 Vol. 9; ISSN 2325-5870
Publisher:
IEEECopyright Statement
Country of Publication:
United States
Language:
English

References (40)

On the implementation of an interior-point filter line-search algorithm for large-scale nonlinear programming journal April 2005
Linear power flow formulation for low-voltage DC power grids journal October 2018
Convex Optimization book January 2004
Voltage collapse in complex power grids journal February 2016
State-space solutions to standard H/sub 2/ and H/sub infinity / control problems journal January 1989
Parametric absolute stability of Lur'e systems journal January 1998
A Comprehensive Review on Constant Power Loads Compensation Techniques journal January 2018
Stability and control of ad hoc dc microgrids conference December 2016
Stability, control, and power flow in ad hoc DC microgrids conference June 2016
GA-based optimal power flow for microgrids with DC distribution network conference September 2015
Electrical Networks and Algebraic Graph Theory: Models, Properties, and Applications journal May 2018
High-Voltage Solution in Radial Power Networks: Existence, Properties, and Equivalent Algorithms journal October 2017
A Tool for Stability and Power-Sharing Analysis of a Generalized Class of Droop Controllers for High-Voltage Direct-Current Transmission Systems journal September 2018
Convex Restriction of Power Flow Feasibility Sets journal September 2019
On Existence and Stability of Equilibria of Linear Time-Invariant Systems With Constant Power Loads journal January 2016
On Resistive Networks of Constant-Power Devices journal August 2015
DC bus voltage control for a distributed power system journal November 2003
DC Microgrids–Part I: A Review of Control Strategies and Stabilization Techniques journal January 2015
Transmission Loss Optimization-Based Optimal Power Flow Strategy by Hierarchical Control for DC Microgrids journal March 2017
DC Power Flow Revisited journal August 2009
Small-Signal Stability Analysis of Multi-Terminal VSC-Based DC Transmission Systems journal November 2012
Modeling of Multi-Terminal VSC HVDC Systems With Distributed DC Voltage Control journal January 2014
Optimal Power Flow in Direct Current Networks journal November 2014
Unified Distributed Control for DC Microgrid Operating Modes journal January 2016
AC-Feasibility on Tree Networks is NP-Hard journal January 2016
Robust Stability Analysis of DC Microgrids With Constant Power Loads journal January 2018
The Adaptive Robust Multi-Period Alternating Current Optimal Power Flow Problem journal March 2018
Optimal Power Flow in Stand-Alone DC Microgrids journal September 2018
A New Voltage Stability-Constrained Optimal Power-Flow Model: Sufficient Condition, SOCP Representation, and Relaxation journal September 2018
On the Convergence of Newton's Method in Power Flow Studies for DC Microgrids journal September 2018
Robust AC Optimal Power Flow journal May 2019
Existence and Stability of Equilibrium of DC Microgrid With Constant Power Loads journal November 2018
Stability Analysis and Controller Design of DC Microgrids With Constant Power Loads journal January 2015
A Survey of Distributed Optimization and Control Algorithms for Electric Power Systems journal November 2017
Guaranteed Asymptotic Stability for Some Linear Systems With Bounded Uncertainties journal September 1979
Robust Optimization for Electricity Generation journal January 2021
Robust Optimization of Large-Scale Systems journal April 1995
Robust Optimization book December 2009
A Survey of Relaxations and Approximations of the Power Flow Equations book January 2019
Towards an AC Optimal Power Flow Algorithm with Robust Feasibility Guarantees conference June 2018

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