NDLI: Multi-stage coordinated dynamic VAR source placement for voltage stability enhancement of wind-energy power system

Content Provider	IET Digital Library
Author	Chi, Yuan Xu, Yan
Abstract	Increased wind power penetration and induction loads have deteriorated the voltage stability performance of the power system. This study proposes a multi-stage multi-objective dynamic VAR source placement method for wind energy power system, where three sub-objectives are optimised simultaneously: (i) investment cost and operational control cost; (ii) steady-state voltage stability index; (iii) short-term voltage stability index. This method coordinates the dynamic VAR allocation decisions with preventive and corrective stability controls, including wind power curtailment, modification of the line drop compensation, and load shedding, to improve both steady-state and short-term voltage stability of the system. A robust parameter design technique called Taguchi's Orthogonal Array Testing is used to model the wind power uncertainty. Pareto optimal solutions are obtained for flexible decision-making. The computation burden is mitigated by candidate buses selection and critical contingency identification. The proposed model is demonstrated on the New England 39-bus test system using PSS®E. Compared with conventional approaches, it can achieve higher voltage stability level with less overall cost and moderate wind power curtailment, and at the same time avoid the conservativeness of planning decisions.
Starting Page	1104
Ending Page	1113
Page Count	10
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 6, Mar (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2019.0126
Journal	IET Generation, Transmission & Distribution
Publisher Date	2019-11-20
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Control of Electric Power System Corrective Stability Controls Dynamic VAR Allocation Decisions Higher Voltage Stability Level Induction Load Load Shedding Moderate Wind Power Curtailment Multistage Coordinated Dynamic VAR Source Placement Multistage Multiobjective Dynamic VAR Source Placement Method New England 39-bus Test System Operational Control Cost Optimisation Optimisation Technique Pareto Optimisation Power System Control Power System Dynamic Stability Power System Economics Power System Managemen Power System Operation Power System Security Power System Stability Preventive Stability Control Short-term Voltage Stability Index Steady-state Voltage Stability Index Voltage Control Voltage Stability Enhancement Voltage Stability Performance Wind Energy Power System Wind Power Plant Wind Power Uncertainty Wind-energy Power System
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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