Power Quality Improvement for Hybrid Wind, Solar & Diesel Generator Energy Systems using

D-STATCOM with Power System Planning

PREPARED BY SUPERVISED BY S.UmaMaheswari G.Vijaya GowriPG Scholar Associate ProfessorII Year M.E(Power Systems Engineering) Department of EEE

K.S.Rangasamy College of TechnologyThiruchengode -637215

(An Autonomous Institution Affiliated to Anna university Chennai)

Review Content Introduction of Power Quality

Problem Identification

Objective of the work for the Phase 2

Novelty of the Work

Literature Survey

Relation between phase 1 and phase 2

Block Diagram

Quasi Z source Network model

Conclusion

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Stage 1-Abstract, Design of Block diagramStage 2-Preparation of Simulation Diagram,

Literature Review.Stage 3-Developing the Simulation ModelStage 4-Results and DiscussionStage 5-Testing of Results and Analysis

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Introduction of Power Quality• Renewable Energy-“Any sustainable energy source that comes from natural

environment”.• Application with renewable energy sources such as solar cell array, wind

turbines, and diesel generator have increased significantly during the past decade.

• To obtain the clean energy, the hybrid solar–wind power generation is used. Consumers prefer quality of power from suppliers.

• The quality of power can be measured by using parameters such as voltage sag, harmonic and power factor.

• To obtain the quality of power, different topologies are used.Common Disturbances In Power Quality Voltage sag Voltage swell Transients Voltage Unbalance Harmonics Voltage fluctuations04/28/23 4

Problem Identification• Using the generator (knocking) the harmonic disturbance in the

transmission line will be increased.

• Harmonic distortion of the main supply implies that the source not only carries 50 or 60 Hz frequencies but also components of higher frequencies.

Problems due to higher frequencies are:• Limitations on supply and network utilization

• Increased losses

• Increased transformer, motor and cable heating 

• Reduced equipment life-time

• Audible noise

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Objective of Work in phase1 The main objective of this project is to minimize the voltage imbalance,

and harmonics by the help of PQ theory with Hysteresis loss current

control method.

To overcome this issues, a FACTS device named D-STATCOM(Reactive

compensation) is used to compensate harmonics problem.

Objective of Work in phase2 The main objective of this project is to minimize the voltage imbalance,

and harmonics by the help of Fuzzy logic with Hysteresis loss current

control method and also Power system Planning is also carried out.

To overcome this issues, a FACTS device named D-STATCOM(Reactive

compensation) is used to compensate harmonics problem.04/28/23 6

Novelty of Work

DC-DC converter and PQ Theory with Hysteresis loss current control

method is replaced by Quasi Z-Source inverter and Fuzzy logic algorithm

with hysteresis loss current control method.

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Current Harmonic Compensation and Power Factor by

Hybrid Shunt Active Power Filter

T.Mahalekshi

In this paper the current harmonic can be compensated by using

the Shunt Active and Passive filter, and combination of both.

Here the odd harmonics were eliminated.(3rd order harmonics)

The method used in this paper is dq transformation.

By this method THD is reduced upto 1.95% and the power

factor is increased 0.9554.

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Harmonic Mitigation and Power Factor Improvement

Using Fuzzy logic and neural Network controlled

Active power Filter

V.Suresh Kumar, D.Kavitha, P.S.Kannan

In this paper harmonics is controlled by Shunt active filter.

Here the odd harmonics were eliminated(5th order harmonics).

The method used in this paper is Fuzzy logic and neural

network.

In this paper the total THD is reduced below 3%.

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The Harmonic detection method based on neural

network applied to harmonics compensation

Rachid Dehini, Abddesselam Bassou, Brahim Ferdi

In this paper the harmonics are compensated by using the

Shunt Active Power filter.

Here the odd harmonics were eliminated.(7th order harmonics)

The method used in this paper is Artificial neural Network

with PQ Theory.

By this method THD is reduced below 3%.04/28/23 10

Third Harmonic Injection Technique for Dynamic

Voltage Restorer With Repetitive ControllerR.J.Satputaley, V.B Borghate, BharatKumar, M.A.ChauDhari

In this paper the harmonic can be compensated by Reactive

Compensation method .

Here the odd harmonics were eliminated.(3rd harmonics)

The method used here is Sinusoidal Pulse Width Modulation

(SPWM) with controller Dynamic Voltage Restorer.

By this method THD is reduced below 3%.

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Harmonics Reduction using a Continuously Reactive

power compensation in HVDC Links

Karim Shaarbafi

In this paper the harmonic can be compensated by using the

Reactive Compensation method.

Here the odd harmonics were eliminated.(7th order harmonics)

The Device used in this is HVDC converters and Switch

Controlled Capacitance(SCC).

By this method THD is reduced below 3%.

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Block Diagram

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Z-SOURCE NETWORK MODEL

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Input & output Voltage of Z-Source Network

C=0.01F =1/100 F

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Input & output Voltage of Z-Source Network

C=1mF =1/1000 F

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Conclusion

• The result obtained from this Z-Source network is according to the input voltage and the capacitance value, the output voltage is the achieved in constant voltage.

• The input voltage is boosted using Z-SOURCE Network and the Output Voltage is achieved as per the requirement.

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Thank You

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