NDLI: Adaptive under-voltage load shedding scheme for large interconnected smart grids based on wide area synchrophasor measurements

Content Provider	IET Digital Library
Author	Adewole, Adeyemi Charles Tzoneva, Raynitchka Apostolov, Alexander
Abstract	The existing local protection schemes for undervoltage protection in power systems are not engineered to protect the system against wide area disturbances. Therefore, system integrity protection schemes (SIPS) designed to preserve the integrity of the system are required. This study proposes a new response-based SIPS for adaptive undervoltage load shedding (UVLS) in large interconnected systems based on the IEEE C37.118.1-2011 synchrophasor measurements from widely dispersed phasor measurement units (PMUs) synchronised to the reference time of the global positioning system. The control signals to shed the feeder loads are based on high-speed IEC 61850 Generic Object Oriented Substation Event messages. The proposed adaptive UVLS-SIPS algorithm calculates in real-time the total amount of load to shed corresponding to the severity of the disturbance using the least squares algorithm. The amount of load to shed and its distribution across the interconnected system is based on a formulated reactive power mismatch and adaptive weighted summation real-time voltage stability assessment index, respectively. The proposed UVLS-SIPS algorithm was deployed onto a programmable logic controller (PLC), and was tested under various dynamic conditions using the New England 39-bus test system. Real-time simulations were conducted with an industrial-grade ‘proof-of-concept’ testbed.
Starting Page	1957
Ending Page	1968
Page Count	12
ISSN	17518687
Volume Number	10
e-ISSN	17518695
Issue Number	Issue 8, May (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/10/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2015.1250
Journal	IET Generation, Transmission & Distribution
Publisher Date	2016-05-19
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Under-voltage Load Shedding Scheme Adaptive Weighted Summation Real-time Voltage Stability Assessment Index Control Signal Feeder Load Global Positioning System High-speed IEC 61850 Generic Object Oriented Substation Event Messages IEEE C37.118.1-2011 Synchrophasor Measurement Industrial-grade Equipment Interpolation And Function Approximation Large Interconnected Smart Grid Least Squares Algorithm Least Squares Approximation Load Shedding Local Protection Scheme Me Digital Simulatormulator New England 39-bus Test System Numerical Analysis Phasor Data Concentrator Phasor Measurement PLC PMUs Power System Power System Economics Power System Interconnection Power System Managemen Power System Measurement And Metering Power System Operation Power System Protection Programmable Logic Controller Reactive Power Mismatch Response-based SIPS Smart Power Grid Substation Protection Substations System Integrity Protection Scheme Undervoltage Protection UVLS-SIPS Algorithm Wide Area Synchrophasor Measurement Unit
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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