NDLI: Preventive control approach for voltage stability improvement using voltage stability constrained optimal power flow based on static line voltage stability indices

Content Provider	IET Digital Library
Author	Zabaiou, Tarik Dessaint, Louis A Kamwa, Innocent
Abstract	Voltage stability improvement is a challenging issue in planning and security assessment of power systems. As modern systems are being operated under heavily stressed conditions with reduced stability margins, incorporation of voltage stability criteria in the operation of power systems began receiving great attention. This study presents a novel voltage stability constrained optimal power flow (VSC-OPF) approach based on static line voltage stability indices to simultaneously improve voltage stability and minimise power system losses under stressed and contingency conditions. The proposed methodology uses a voltage collapse proximity indicator (VCPI) to provide important information about the proximity of the system to voltage instability. The VCPI index is incorporated into the optimal power flow (OPF) formulation in two ways; first it can be added as a new voltage stability constraint in the OPF constraints, or used as a voltage stability objective function. The proposed approach has been evaluated on the standard IEEE 30-bus and 57-bus test systems under different cases and compared with two well proved VSC-OPF approaches based on the bus voltage indicator L-index and the minimum singular value. The simulation results are promising and demonstrate the effectiveness of the proposed VSC-OPF based on the line voltage stability index.
Starting Page	924
Ending Page	934
Page Count	11
ISSN	17518687
Volume Number	8
e-ISSN	17518695
Issue Number	Issue 5, May (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/8/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2013.0724
Journal	IET Generation, Transmission & Distribution
Publisher	The Institution of Engineering and Technology
Publisher Date	2014-01-17
Access Restriction	Open
Rights License	Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Subject Keyword	Bus Voltage Indicator L-index Control of Electric Power System Line Voltage Stability Index Load Flow Control Optimal Control Power System Control Power System Loss Power System Operation Power System Protection Power System Security Assessment Power System Stability Preventive Control Approach Stability in Control Theory Stability Margins Standard 57-bus Test System Standard IEEE 30-bus Test System Static Line Voltage Stability Indices VCPI Index Voltage Collapse Proximity Indicator Voltage Control Voltage Stability Constrained Optimal Power Flow Approach Voltage Stability Objective Function VSC-OPF Approach
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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