Efficient Control of D STATCOM For Voltage Dip Compansation

Project Title

Efficient Control of D STATCOM For Voltage Dip Compansation

Project Area of Specialization Electrical/Electronic EngineeringProject Summary

Distributed static compensator (D-STATCOM) has come out as a favorable device to provide the solution not only for voltage dip mitigation but also for the other power quality problems such as voltage de-stabilization, bad power factor, and harmonic distortion often encountered by the power system. D-STATCOM is connected in parallel with main circuit (shunt connected device) which at fundamental frequency produce a balanced set of three sinusoidal voltages or currents waveforms. D-STATCOM configuration consists of a Voltage Source Converter (VSC) that converts voltage across the storage device into a set of three-phase ac output voltages. The voltages produced by D-STATCOM are in phase and coupled with the main ac network of the coupling transformer through transformer reactance.

The evolution in the technology within the last decade has seen radical expansion in the electrical loads and multiplying in numbers of complexity of the equipment that is highly sensitive to poor quality of distribution. According to reports, due to minor failures in the quality of electricity supply, many large industrial consumers have experienced large financial losses. Minsky et al. (2004) reported that so many people contributed their efforts to cure the situation with the solution basing latest electrical development across the world. The system developed by Reed & Giroux (1999) is implemented a number of flexible control strategies are developed to improve the efficiency and control of the emerging power system applications. Among this, the algorithm taken from Iravani & Crow (1994 & 2000) D-STATCOM based on the VSC principle has been used in this paper to perform the modeling and analysis of such controllers for a wide range of operating conditions. MATLAB/PLECS' highly-developed and technologically evolved simulation software engulfing graphical interface has been utilized for application of the PWM controller reported in this paper for the D-STATCOM. It relies on voltage measurement which is our main issue under observation.

Project Objectives

1. Efficient Control of D-STATCOM for Voltage Dip Compensator.

2. Design of D-STATCOM topology for Voltage Dip compensation
3. Design, simulation and validation of different components of topology.
4. Hardware implementation of the simulated topology.
5. Validation of the results

Project Implementation Method

1. Simulations on Protious.

2. Arduino and Microcontroler Coding.

3. Hardware Implimentation.

4. Software Interfacing with hardware.

5. Testing and Troubleshooting.

6. Validation of Results.

Benefits of the Project

Voltage dips and flickering are two major power quality problems often create trouble within industries, utility plants and various distribution networks. In our project we compensated the voltage dip faced by the three phases of the power supply feeding the load (three phase squirrel cage induction motor).

When fault occurs on any of the three phases the voltage of that phases reduces by 30-40% of its normal value so D-STATCOM compensate that voltage in the circuit by performing its action, connected in parallel to the circuit. It inserts the VARs into the system which is in direct proportion to the voltage, so whenever the system voltage becomes less the operating voltage D-STATCOM compensate the required voltage, Voltage dips are measured in per unit voltage fall or rise in normal voltage of the system.

Technical Details of Final Deliverable

Design:

1. Current source convertor based
2. Voltage source convertor based

Controllable reactive power can be produced by all types of ac to dc or dc to ac switching convertors. The former group is called dc to ac convertors or just convertors, whereas the latter is referred to frequency changers or frequency convertors or cyclo-convertors. The normal function of a convertor is to convert dc power to ac and that of frequency changers to change ac power of one frequency to other frequency. A power convertor of either type consists of an array of solid state switches which connect the input terminal to output terminals. Consequently, a switching power convertor has no internal energy storage therefore instantaneous power input must be equal to instantaneous power output. Also, the termination of input and output must be complimentary, that is, if the input is terminated by a voltage source (which can be an active voltage source like battery or passive source e.g. capacitor) then the output must be terminated by a current source (which in practice would always mean a voltage source with an inductive source impedance or an passive inductive impedance) and vice versa .in the case of dc to ac convertors the dc terminals are usually considered as “input” and therefore voltage-sourced or current-sourced convertors are distinguished according to whether they are shunted by a voltage source(capacitor, battery) or a current source(inductor) . Due to their practical importance in transmission and small distribution applications current source convertor and voltage source convertor-based design are widely applicable.
 

SOFT WARES:

• Proteus
• Arduino Mega 2560
• Matlab

Final Deliverable of the Project Hardware SystemCore Industry Energy Other IndustriesCore Technology Artificial Intelligence(AI)Other Technologies OthersSustainable Development Goals Affordable and Clean EnergyRequired Resources

Item Name	Type	No. of Units	Per Unit Cost (in Rs)	Total (in Rs)
			Total in (Rs)	64933
Current Transformer (SLC) Fico Company [220V To 5V & 50 Hz]	Equipment	3	3400	10200
Potential Transformer (SLC) Fico Company [230V To 12V AC & 50 Hz]	Equipment	3	2400	7200
Coupling Transformer	Equipment	3	175	525
Three Phase Induction Motor 3 Watt	Equipment	1	8000	8000
MOSFET (IRF 3205)	Equipment	6	85	510
DC source (Dry battery) 12V, 7Ah	Equipment	1	3000	3000
Step down transformer (230/12 V)	Equipment	1	400	400
Three phase circuit breakers for motor protection	Equipment	1	925	925
Arduino (ATMEGA 2560)	Equipment	1	1540	1540
LCD (20x4)	Equipment	1	548	548
Gate Driver IC	Equipment	1	75	75
AC To DC Converter	Equipment	2	1540	3080
Hex Bridge Circuit	Equipment	1	1680	1680
Filter	Equipment	1	750	750
Charging Capacitor	Equipment	1	3850	3850
IC (7805)	Equipment	1	100	100
LED's & Resistors & Capacitors	Equipment	40	25	1000
Bread Board	Equipment	3	190	570
PCB Wire Sets	Equipment	5	150	750
Tool Kit	Miscellaneous	1	1200	1200
DMM	Miscellaneous	1	3590	3590
PCB	Equipment	8	180	1440
Jumper Wires	Equipment	50	60	3000
Connectors	Equipment	20	50	1000
Prototype	Equipment	1	7000	7000
Shipment Charges	Miscellaneous	1	3000	3000