Performance Improvement of DVR by Control of Reduced-Rating with A Battery Energy Storage

ABSTRACT:

Performance improvement of Voltage infusion strategies for DVRs (Dynamic Voltage Restorers) and working modes are settled in this paper. Utilizing fuzzy logic control DVR with dc link& with Battery Energy Storage System frameworks are worked. Power quality issues for the most part consonant contortion, voltage swell and droop are diminished with DVR utilizing Synchronous Reference Theory (SRF hypothesis) with the assistance of fuzzificaton waveforms are watched.

 

 BLOCK DIAGRAM:

 Fig.1.Block Diagram of DVR

 EXPECTED SIMULATION RESULTS:

Fig.2 Voltage waveforms at common coupling point (PCC) and load during harmonic distortion

Fig.3. the dc voltage injection from Battery energy Storage System connected DVR system at voltage swelling period

 Fig.4. DVR waveforms during voltage sag at time of voltage in phase injection

 Fig.5 Amplitude of load voltages and PCC voltages w.r.t time

 Fig 6.DVR waveforms during harmonic distortion at the time of voltage in phase injection

CONCLUSION:

By applying distinctive voltage infusion conspires the job of DVR has been appeared with a most recent control strategy. The introduction of DVR has been offset with different plans with a decreased rating VSC. For gaining the power of DVR, the reference stack voltages have been resolved with the assistance of unit vectors, for which the blunder of voltage addition is diminished. By utilizing SRF hypothesis the reference DVR voltages have been resolved. At last, the outcome inferred are that the in stage voltage addition with PCC voltage diminishes the DVR rating and yet at its DC transport the vitality source is squandered. battery energy storage system. Performance Improvement of DVR by Control of Reduced-Rating with A Battery Energy Storage.

 

 Compensation of Voltage Distribunces In SMIB System Using ANN Based DPFC Controller

International conference on Signal Processing, Communication, Power and Embedded System (SCOPES)-2016, IEEE

ABSTRACT: Since last decade, due to advancement in technology and increasing in the electrical loads and also due to complexity of the devices the quality of power distribution is decreases. A Power quality issue is nothing but distortions in current, voltage and frequency that affect the end user equipment or disoperation; these are main problems of power quality so compensation for these problems by DPFC is presented in this paper. The control circuits for DPFC are designed by using line currents, series reference voltages and these are controlled by conventional ANN controllers. The results are observed by MATLAB/SIMULINK model.

 KEYWORDS:

  1. Power Quality
  2. Voltage Sag
  3. DPFC
  4. Voltage Swell

 SOFTWARE: MATLAB/SIMULINK

BLOCK DIAGRAM:

Figure 1: Schematic Diagram for DPFC

EXPECTED SIMULATION RESULTS:

Figure 2: Output Voltage during fault condition

Figure 3: Output Current during Fault Condition

Figure 4: Output voltage compensated by DPFC Controller

Figure 5: Compensated Output Current by DPFC Controller

Figure 6: Active and Reactive Power

Figure 7: THD value of system output voltage without DPFC

Figure 8: THD value of DPFC (pi controller) load Voltage

Figure 9: THD for output voltage under ANN Controller

 CONCLUSION:

In this paper we implemented a concept to controlling the power quality issues i.e. DPFC. The proposed theory of this device is mathematical formulation and analysis of voltage dips and their mitigations for a three phase source with linear load. In this paper we also proposed a concept of Ann controller for better controlling action. As compared to all other facts devices the DPFC based ANN has effectively control all power quality problems and with this technique we get the THD as 3.65% and finally the simulation results are shown above.

 REFERENCES:

  1. Ahmad Jamshidi, S.Masoud Barakati, and M.Moradi Ghahderijani presented a paper on “Impact of Distributed Power Flow Controller to Improve Power Quality Based on Synchronous Reference Frame Method” at IACSIT International Journal of Engineering and Technology, Vol. 4, No. 5, October 2012.
  2. Ahmad Jamshidi, S.Masoud Barakati, and Mohammad Moradi Ghahderijani posted a paper “Power Quality Improvement and Mitigation Case Study Using Distributed Power Flow Controller” on 978-1-4673-0158-9/12/$31.00 ©2012 IEEE.
  3. Srinivasarao, Budi, G. Sreenivasan, and Swathi Sharma. “Comparison of Facts Controller for Power Quality Problems in Power System”, Indian Journal of Science and Technology, 2015.
  4. J.R.Enslin, “Power mitigation problems,” in Proc. IEEE Int. Symp. Industrial Electronics (ISIE ’98), vol. 1, 1998, pp. 8– 20.
  5. Srinivasarao, Budi, G. Sreenivasan, and Swathi Sharma. “Mitigation of voltage sag for power quality improvement using DPFC system”, 2015 International Conference on Electrical Electronics Signals Communication and Optimization (EESCO), 2015.

Simulation of Distributed Power Flow Controller for Voltage Sag Compensation

ABSTRACT:

In this paper, we introduced a new series-shunt type FACTS controller called as distributed power flow controller to improve and maintain the power quality of an electrical power system. This DPFC method is same as the UPFC used to compensate the voltage sag and the current swell these are voltage based power quality problems. As compared to UPFC the common dc link capacitor is removed and three individual single phase converters are used instead of a three phase series converter. Series referral voltages, branch currents are used in this paper for designing control circuit. The evaluated values are obtained by using MATLAB/SIMULINK.

 KEYWORDS:

  1. DPFC
  2. Power Quality
  3. Voltage Sag
  4. Voltage Swell

 SOFTWARE: MATLAB/SIMULINK

 BLOCK DIAGRAM:

Figure 1. Schematic diagram for DPFC.

EXPECTED SIMULATION RESULTS:

 

 Figure 2. Output voltage during fault condition.

Figure 3. Output current during fault condition.

Figure 4. Output voltage compensated by DPFC controller.

Figure 5. Compensated output current by DPFC controller.

Figure 6. Active and reactive power.

Figure 7. THD value of system output voltage without DPFC.

Figure 8. THD value of DPFC (pi controller) load voltage.

Figure 9. THD value of fuzzy controller output voltage.

 CONCLUSION:

In this paper we implemented a concept to controlling the power quality issues i.e DPFC. The proposed theory of this device is mathematical formulation and analysis of voltage dips and their mitigations for a three phase source with linear load. In this paper we also proposed a concept of fuzzy logic controller for better controlling action. As compared to all other facts devices the DPFC based Fuzzy has effectively control all power quality problems and with this technique we get the THD as 3.65% and finally the simulation results are shown above.

 REFERENCES:

  1. Jamshidi A, Barakati MS, Ghahderijani MM. Presented a paper on Impact of distributed power flow controller to improve power quality based on synchronous reference frame method. IACSIT International Journal of Engineering and Technology. 2012 Oct; 4(5):581–5.
  2. Jamshidi A, Barakati MS, Ghahderijani MM. Power quality improvement and mitigation case study using distributed power flow controller; 2012 IEEE International Symposium on Industrial Electronics (ISIE); 2012 May 28-31; Hangzhou; IEEE. p. 464-8.
  3. Patne NR, Thakre KL. Presents a topic on Factor affecting characteristics of voltages. Serbian Journal of Electrical Engg during fault in P.S Engineering. 2008 May; 5(1):171–82.
  4. Enslin JR. Power mitigation problems. Proceedings of IEEE International Symposium Industrial Electronics (ISIE ’98); 1998 Jun. 1:8–20.
  5. Chandra A. A review of active filters for power quality improvement. IEEE Trans Ind Electron. 1999 Oct; 46(5):960–71.

Compensation of Voltage Distribunces In SMIB System Using ANN Based DPFC Controller

 

ABSTRACT:

Since last decade, due to advancement in technology and increasing in the electrical loads and also due to complexity of the devices the quality of power distribution is decreases. A Power quality issue is nothing but distortions in current, voltage and frequency that affect the end user equipment or disoperation; these are main problems of power quality so compensation for these problems by DPFC is presented in this paper. The control circuits for DPFC are designed by using line currents, series reference voltages and these are controlled by conventional ANN controllers. The results are observed by MATLAB/SIMULINK model.

 KEYWORDS:

  1. Power Quality
  2. Voltage Sag
  3. DPFC
  4. Voltage Swell

 SOFTWARE: MATLAB/SIMULINK

 BLOCK DIAGRAM:

Figure 1: Schematic Diagram for DPFC

EXPECTED SIMULATION RESULTS:

 

Figure 2: Output Voltage during fault condition

Figure 3: Output Current during Fault Condition

Figure 4: Output voltage compensated by DPFC Controller

Figure 5: Compensated Output Current by DPFC Controller

Figure 6: Active and Reactive Power

Figure 7: THD value of system output voltage without DPFC

Figure 8: THD value of DPFC (pi controller) load Voltage

Figure 9: THD for output voltage under ANN Controller

 CONCLUSION:

In this paper we implemented a concept to controlling the power quality issues i.e. DPFC. The proposed theory of this device is mathematical formulation and analysis of voltage dips and their mitigations for a three phase source with linear load. In this paper we also proposed a concept of Ann controller for better controlling action. As compared to all other facts devices the DPFC based ANN has effectively control all power quality problems and with this technique we get the THD as 3.65% and finally the simulation results are shown above.

REFERENCES:

  1. Ahmad Jamshidi, S.Masoud Barakati, and M.Moradi Ghahderijani presented a paper on “Impact of Distributed Power Flow Controller to Improve Power Quality Based on Synchronous Reference Frame Method” at IACSIT International Journal of Engineering and Technology, Vol. 4, No. 5, October 2012.
  2. Ahmad Jamshidi, S.Masoud Barakati, and Mohammad Moradi Ghahderijani posted a paper “Power Quality Improvement and Mitigation Case Study Using Distributed Power Flow Controller” on 978-1-4673-0158-9/12/$31.00 ©2012 IEEE.
  3. Srinivasarao, Budi, G. Sreenivasan, and Swathi Sharma. “Comparison of Facts Controller for Power Quality Problems in Power System”, Indian Journal of Science and Technology, 2015.
  4. J.R.Enslin, “Power mitigation problems,” in Proc. IEEE Int. Symp. Industrial Electronics (ISIE ’98), vol. 1, 1998, pp. 8– 20.
  5. Srinivasarao, Budi, G. Sreenivasan, and Swathi Sharma. “Mitigation of voltage sag for power quality improvement using DPFC system”, 2015 International Conference on Electrical Electronics Signals Communication and Optimization (EESCO), 2015.

Control of Reduced Rating Dynamic Voltage Restorer with Battery Energy Storage System

 

ABSTRACT:

In this paper, different voltage injection schemes for dynamic voltage restorers (DVRs) are analysed with particular focus on the methods used to minimize the rating of the voltage source converter (VSC) used in DVR. The control and operation of a DVR is demonstrated with reduced rating VSC. The reference load voltage is estimated using the unit vectors and the synchronous reference frame (SRF) theory is used for the control of DVR. The compensations of sag, swell and harmonics in supply voltage using the reduced rating DVR are demonstrated using MATLAB with its Simulink power system blockset (PSB) toolboxes.

 KEYWORDS:

  1. Dynamic Voltage Restorer
  2. Power Quality
  3. Unit Vector
  4. Voltage Harmonics
  5. Voltage Sag
  6. Voltage Swell

 SOFTWARE: MATLAB/SIMULINK

BLOCK DIAGRAM:

 

Fig. 1. Scematic diagram of the DVR connected system.

EXPECTED SIMULATION RESULTS:

 Fig. 2. Dynamic performance ofDVR with inphase injection during voltage sag and swell applied to critical load.

Fig. 3. Voltages at PCC and Load terminal.

Fig. 4. Dynamic performance of DVR during harmonics in supply voltage

applied to critical load.

Fig. 5. PCC Voltage and harmonic spectrum.

Fig. 6. Supply current and harmonic spectrum.

Fig. 7. Load voltage and harmonic spectrum.

Fig. 8. Dynamic performance of capacitor supported DVR during (a) voltage sag and (b) voltage swell applied to critical load.

CONCLUSION:

The operation of a DVR has been demonstrated under different voltage injection schemes. A comparison of the performance with different schemes has been performed with reduced rating VSC including capacitor supported DVR. The reference load voltage has been generated using the method of unit vetors. The control of DVR has been achieved which minimizes the error of voltage injection. The SRF (synchronous reference frame) theory has been used for the control of DVR. It is concluded that the voltage injection in phase with the PCC voltage results in minimum rating of DVR but at the cost of an energy source at the dc bus.

REFERENCES:

[1] Math H.J. Bollen, Understanding Power Quality Problems- Voltage Sags And Interruptions, IEEE Press, New York, 2000.

[2] A. Ghosh and G. Ledwich, Power Quality Enhancement using Custom Power devices, Kluwer Academic Publishers, London, 2002.

[3] Math H. J. Bollen and Irene Gu, Signal Processing of Power Quality disturbances, Wiley-IEEE Press, 2006.

[4] R. C. Dugan, M. F. McGranaghan and H. W. Beaty, Electric Power Systems Quality. 2nd Edition, New York, McGraw Hill, 2006.

[5] Antonio Moreno-Munoz, Power Quality: Mitigation Technologies in a Distributed Environment, Springer-Verlag London limited, London 2007.