Power Quality Improvement of Distributed Generation Integrated Network with Unified Power Quality Conditioner

Supervised by

Malabika Basu Michael Conlon

MD. SHAFIUZZAMAN KHAN KHADEM

School of Electrical Engineering Systems,Dublin Institute of Technology,

Republic of Ireland

15 February 2013

Power Quality Improvement of Distributed Generation Integrated Network with Unified Power Quality

Conditioner

Power Quality Improvement of Distributed Generation Integrated Network with Unified Power Quality Conditioner

ContentObjectives

Research Methodology

Literature Review

Research Contribution

Question & Answer

Power Quality Improvement of Distributed Generation Integrated Network with Unified Power Quality Conditioner

Objectives

UPQC

Distributed Generation Integrated Network(interconnection of DG sources with EPS and PCC)

Power Quality degrades due to• Harmonic current injection• Load variation• DG supply variation• Voltage disturbance

UPQC improves the PQ byCompensate • reactive current• harmonic current• voltage disturbance

Investigate

Placement

Integration

Capacity enhancement

Real time control

• capacity enhance capability• operational flexibility

Depends on:• sensors position• Design parameters• control method• integration technique

Cope up • with bi-directional power flow• capacity change• flexible operation

Power Quality Improvement of Distributed Generation Integrated Network with Unified Power Quality Conditioner

Research Methodology

Literature review

Real time control

Publication and Presentation

Thesis writing

Identification of research direction and

investigation

Simulation(MATLAB)

Real time control(RT-LAB)

Software-in-loop method(hardware synchronized)

Software• Virtual Plant & Controller

Hardware• Data acquisition system

ss_Control

sm_Plant

Power Quality Improvement of Distributed Generation Integrated Network with Unified Power Quality Conditioner

Literature Review

• PQ issues• PQ mitigation techniques• Custom Power Devices

Power Quality (PQ)(Network)

(Chapter - 1)

• Shunt Active Power Filter• Series Active Power Filter• Unified Power Quality Conditioner

Design & Control(Compensator)(Chapter - 2)

• DG integrated microgrid network• UPQC in microgrd• Bi-directional power flow

Placement & Integration

(Chapter – 3,5)

• Shunt Active Power Filter• Active power sharing method• Droop control method

Parallel Operation(Chapter – 4)

• Reactive and harmonic current compensation• Operational flexibility• Circulating current flow

Capacity enhancement(Chapter – 6)

Power Quality Improvement of Distributed Generation Integrated Network with Unified Power Quality Conditioner

Research Contribution

VSI

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Real Time Performance Study

Design(Chapter – 2)

• Generalized design procedure of shunt part of the UPQC• Associate the active power loss to the selection of design parameters

Placement(Chapter – 3)

• Placement of UPQC and its sensors• Impact of sensor placement on the UPQC control• Performance of UPQC with bi-directional power flow• The advantage of DG inverter in presence of UPQC

Integration(Chapter – 5)

• UPQCµG : A new proposal for integration of UPQC in DG connected µG network• Operational flexibility of µG network

Capacity enhancement(Chapter – 6)

• Distributed UPQC (D-UPQC): A new proposal for capacity enhancement• Operational flexibility of D-UPQC• Reduction of circulating current flow

• UPQCµG : A new proposal for integration of UPQC in DG connected µG network• Operational flexibility of µG network

• Distributed UPQC (D-UPQC): A new proposal for capacity enhancement• Operational flexibility of D-UPQC• Reduction of circulating current flow

Power Quality Improvement of Distributed Generation Integrated Network with Unified Power Quality Conditioner

Research Contribution

Control Features- Voltage sag/swell- Reactive and harmonic current- Islanding (UPQCµG-I & UPQCµG-IR)- Reconnection (UPQCµG-IR)

Integration(Ch – 5)

• UPQCµG-I/IR : A new proposal for integration of UPQC in DG connected µG network• Operational flexibility of the µG network

Integration Technique- μG and APFsh are in parallel to

grid and placed at PCC- APFse is in series- DC link can be connected to

storage

Advantages- μG can be connected to the

system during grid fault- μG achieves operational flexibility

in islanding and reconnection process

- μG provides only the active power to the load. Therefore, it reduces the control complexity

- μG can even work in the presence of a phase jump or a phase difference between the grid and μG (UPQCµG-IR).

- Provide high quality power for all time

Power Quality Improvement of Distributed Generation Integrated Network with Unified Power Quality Conditioner

Research Contribution

Control

IsD – Easy & flexible

SynRec

Integration(Ch – 5)

• UPQCµG-I/IR : A new proposal for integration of UPQC in DG connected µG network• Operational flexibility of the µG network

Power Quality Improvement of Distributed Generation Integrated Network with Unified Power Quality Conditioner

Research Contribution

Islanding

Integration(Ch – 5)

ReconnectionUPQCµG-I UPQCµG-I R

• UPQCµG-I/IR : A new proposal for integration of UPQC in DG connected µG network• Operational flexibility of the µG network

Power Quality Improvement of Distributed Generation Integrated Network with Unified Power Quality Conditioner

Research Contribution

Real Time Performance

Integration(Ch – 5)

Voltage sag with DG current forward & reverse flow

Steady stateDynamic

• UPQCµG-I/IR : A new proposal for integration of UPQC in DG connected µG network• Operational flexibility of the µG network

Power Quality Improvement of Distributed Generation Integrated Network with Unified Power Quality Conditioner

Journal Papers

Published:S K Khadem, M Basu and M Conlon, Parallel Operation of Inverters and Active Power Filters in Distributed Generation System – A Review, Elsevier Journal - Sustainable and Renewable Energy Review

S K Khadem, M Basu and M Conlon, UPQC for Power Quality Improvement in DG Integrated Smart Grid Network – A Review, BE Press Journal – International Journal of Emerging Electrical Power Systems

In Review:S K Khadem, M Basu and M Conlon, Harmonic Power Compensation Capacity of Shunt APF and its Relationship to Design Parameters, IET Power Electronics

S K Khadem, M Basu and M Conlon, UPQCµG-I - A new proposal for integration of UPQC in DG connected Micro-grid or Micro-generation network, IEEE Trans Sustainable Energy

S K Khadem, M Basu and M Conlon, UPQCµG-IR - A new proposal for integration of UPQC in DG connected Micro-grid or Micro-generation network, IEEE Trans Smart Grid

Progress:S K Khadem, M Basu and M Conlon, Critical Issues on Placement of UPQC in DG integrated Network, IEEE Trans Power Delivery

S K Khadem, M Basu and M Conlon, D-UPQC - A new proposal for UPQC to enhance capacity and achieve operational flexibility in DG connected Micro-grid or Micro-generation network, IEEE Trans Sustainable Energy

Conference Papers

S K Khadem, M Basu and M Conlon, Power Quality in Grid connected Renewable Energy Systems: Role of Custom Power Devices, in the International Conference on Renewable Energies and Power Quality (ICREPQ´10), 23-25 March, 2010, Granada, Spain

S K Khadem, M Basu and M Conlon, A Review of Parallel Operation of Active Power Filters in Distributed Generation System, EPE 2011 Conference , 30 Aug – 1 Sep 2011, UK

S K Khadem, M Basu and M Conlon, Integration of UPQC for Power Quality Improvement in Distributed Generation Network – A Review, ISGT Europe, 2011, UK

Research Contribution

Power Quality Improvement of Distributed Generation Integrated Network with Unified Power Quality Conditioner

Thank You