NDLI: Constraints of instantaneous reactive power p−q theory

Content Provider	IET Digital Library
Author	Czarnecki, Leszek S.
Abstract	The instantaneous reactive power (IRP) p–q theory can be acknowledged as the first concept that provided fundamentals for switching compensator control and very often such a control is satisfactory. There are situations when this control can result in objectionable effects, however. Instantaneous active and reactive powers, p and q, defined in the IRP p−q theory, were introduced with the emphasis that the definitions of these powers are valid for any three-phase system, without any constraints as to the system properties with respect to the load structure and the supply voltages and load currents waveform. This may imply a conclusion that the instantaneous powers p and q specify the power properties of the three-phase systems regardless of such systems properties. This assurance regarding the lack of constraints has contributed to the dissemination of the IRP p−q theory, especially as a fundamental of the algorithms for switching compensator control. This study shows that such a conclusion has no ground, however. In fact, only at very specific properties of the three-phase system some conclusions on its power properties can be derived from the values of the instantaneous active and reactive powers. Also, it shows that the IRP p−q theory identifies the power properties of the three-phase loads correctly only on the condition that such loads are supplied with symmetrical and sinusoidal voltage.
Starting Page	2201
Ending Page	2208
Page Count	8
ISSN	17554535
Volume Number	7
e-ISSN	17554543
Issue Number	Issue 9, Sep (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/7/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2013.0579
Journal	IET Power Electronics
Publisher Date	2014-08-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Compensation Control of Electric Power System Instantaneous Reactive Power P-q Theory IRP P-q Theory Load Current Waveform Load Structure Power And Energy Control Power Property Power System Control Reactive Power Control Sinusoidal Voltage Supply Voltage Switching Compensator Control Symmetrical Voltage Three-phase System Time Varying Control System Time Varying System
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Nearly constant switching frequency hysteresis-based predictive control for distributed static compensator applications

Effect of Supply Voltage Harmonics on IRP-Based Switching Compensator Control

Simple peak detection control algorithm of distribution static compensator for power quality improvement

Power quality improvement using a dual unified power quality conditioner/uninterruptible power supply in three-phase four-wire systems

Control Strategies for Load Compensation Using Instantaneous Symmetrical Component Theory Under Different Supply Voltages

Dual distribution static compensator for three-phase four-wire distribution system

Characteristics of the magnetic energy recovery switch as a static Var compensator technology

Electrical magnetic hybrid power quality compensation system for V/V traction power supply system

Sliding-mode variable structure controller for cascade STATic var COMpensator

Constraints of instantaneous reactive power p−q theory

Similar Documents

Nearly constant switching frequency hysteresis-based predictive control for distributed static compensator applications

Effect of Supply Voltage Harmonics on IRP-Based Switching Compensator Control

Simple peak detection control algorithm of distribution static compensator for power quality improvement

Power quality improvement using a dual unified power quality conditioner/uninterruptible power supply in three-phase four-wire systems

Control Strategies for Load Compensation Using Instantaneous Symmetrical Component Theory Under Different Supply Voltages

Dual distribution static compensator for three-phase four-wire distribution system

Characteristics of the magnetic energy recovery switch as a static Var compensator technology

Electrical magnetic hybrid power quality compensation system for V/V traction power supply system

Sliding-mode variable structure controller for cascade STATic var COMpensator

Constraints of instantaneous reactive power p−q theory