A FACTS Device Distributed Power Flow Controller (DPFC)

ABSTRACT:

This paper presents a new component within the flexible ac-transmission system (FACTS) family, called distributed power-flow controller (DPFC). The DPF Controller is derived from the unified power-flow controller (UPFC). The DPFC can be considered as a UPFC with an eliminated common dc link. The active power exchange between the shunt and series converters, which is through the common dc link in the UPFC, is now through the transmission lines at the third- harmonic frequency. The DPFC employs the distributed FACTS (D-FACTS) concept, which is to use multiple small-size single-phase converters instead of the one large-size three-phase series converter in the UPFC. The large number of series converters provides redundancy, thereby increasing the system reliability. As the D-FACTS converters are single-phase and floating with respect to the ground, there is no high-voltage isolation required between the phases. Accordingly, the cost of the DPFC system is lower than the UPFC. The DPFC has the same control capability as the UPFC, which comprises the adjustment of the line impedance, the transmission angle, and the bus voltage. The principle and analysis of the DPFC are presented in this paper and the corresponding experimental results that are carried out on a scaled prototype are also shown.

 

KEYWORDS:

  1. AC–DC power conversion
  2. Load flow control
  3. Power electronics
  4. Power semiconductor devices
  5. Power-transmission

 

SOFTWARE: MATLAB/SIMULINK

 

BLOCK DIAGRAM:

facts device

Fig. 1. DPFC control block diagram.

 

EXPECTED SIMULATION RESULTS:

 Fig. 2. DPFC operation in steady state: line current.       

               

Fig. 3. DPFC operation in steady sta te:series converter voltage.

Fig. 4. DPFC operation in steady state: bus

Fig. 5. Reference voltage for the series converters. voltage and current at the Δ side of the transformer


Fig. 6. Step response of the DPFC: series converter

Fig. 7. Step response of the DPFC: linecurrent. voltage.

Fig. 8. Step response : active and reactive power injected by the series converter at the fundamental frequency.

Fig.9. Step response: bus voltage and current at the Δ of the transformer

 

CONCLUSION:

 This paper has presented a new concept called Distributed power flow controller. It emerges from the UPFC and inherits the control capability of the UPFC, which is the simultaneous adjustment of the line impedance, the transmission angle, and the bus-voltage magnitude. The common dc link between the shunt and series converters, which is used for exchanging active power in the UPFC, is eliminated. This power is now transmitted through the transmission line at the third-harmonic frequency. The series converter of the DPFC employs the D-FACTS concept, which uses multiple small single-phase converters instead of one large-size converter. The reliability of the DPFC is greatly increased because of the redundancy of the series converters. The total cost of this controller is also much lower than the UPFC, because no high-voltage isolation is required at the series-converter part and the rating of the components of is low. The DPFC concept has been verified by an experimental setup. It is proved that the shunt and series converters in the DPFC can exchange active power at the third-harmonic frequency, and the series converters are able to inject controllable active and reactive power at the fundamental frequency.

 

REFERENCES:

 -H. Song and A. Johns, Flexible ac Transmission Systems (FACTS) (IEE Power and Energy Series), vol. 30. London, U.K.: Institution of Electrical Engineers, 1999.

  • G. Hingorani and L. Gyugyi, Understanding FACTS : Concepts and Technology of Flexible AC Transmission Systems. New York: IEEE Press, 2000.
  • Gyugyi, C.D. Schauder, S. L.Williams, T. R. Rietman,D. R. Torgerson, andA. Edris, “The unified power flowcontroller:Anewapproach to power transmission control,” IEEE Trans. Power Del., vol. 10, no. 2, pp. 1085–1097, Apr. 1995.
  • -A. Edris, “Proposed terms and definitions for flexible ac transmission system (facts),” IEEE Trans. Power Del., vol. 12, no. 4, pp. 1848–1853, Oct. 1997.
  • K. Sen, “Sssc-static synchronous series compensator: Theory, modeling, and application,” IEEE Trans. Power Del., vol. 13, no. 1, pp. 241–246, Jan. 1998.

IEEE Electrical Engineering Projects for BTech and MTech

Asoka Technologies (IEEE electrical engineering projects)     (B.TECH/M.TECH IEEE ELECTRICAL ENGINEERING PROJECTS USING MATLAB/SIMULINK)
WE OFFER ACADEMIC MATLAB SIMULATION PROJECTS FOR
1. ELECTRICAL AND ELECTRONICS ENGINEERING [EEE]
2. POWER ELECTRONICS AND DRIVES [PED]
3. POWER SYSTEMS [PS]….etc

We will develop your OWN IDEAS and your IEEE Papers with extension if necessary and also we give guidance for publishing papers…

For Further Details Call Us :

0-9347143789/9949240245

For Abstracts of IEEE papers and for any Queries mail to: asokatechnologies@gmail.com and also visit our Blog: www.asokatechnologies.blogspot.com and website www.asokatechnologies.in for more IEEE

IEEE Electrical engineering projects.

Electrical engineers typically hold a degree in electrical engineering or electronic engineering. Practicing engineers may have professional certification and be members of a professional body. Such bodies include the Institute of Electrical and Electronics Engineers (IEEE) and the Institution of Engineering and Technology (professional society) (IET).

Electrical engineers work in a very wide range of industries and the skills required are likewise variable. These range from basic circuit theory to the management skills required of a project manager. The tools and equipment that an individual engineer may need are similarly variable, ranging from a simple voltmeter to a top end analyzer to sophisticated design and manufacturing software.

BTech and MTech EEE projects  can be done in different domains. They are power electronics and drives,  power systems, electrical machines and drives etc. Each of these domains use many technologies and areas.

We understand the importance of IEEE papers for BTech and M.Tech EEE projects. Hence we hand pick IEEE projects for BTech and M.Tech EEE. We ensure that the IEEE papers and projects have enough scope for a two semister project work or for a final year project work. If needed an improvement over the simulated results by newer and better techniques for MTech EEE can also be done. The Matlab / Simulink software is used for doing EEE projects. We do give guidance for paper writing and suggest journals.

BTech and MTech EEE projects of various domains are available at Asoka Technologies. We also develop your own ideas. We deliver the projects within the time frame given by the students. Visit our website and blogspot for more papers.