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A SMART RESIDENTIAL PV AND ENERGY STORAGE SYSTEM

ANJANA P Roll no:11 S7 - F

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OUTLINES• Introduction • Proposed System• Advantages• Disadvantages• Future Scope• Conclusion • References

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INTRODUCTION• Increase in electricity consumption•Wastage during off-peak hours•Time of day pricing policy•Load shifting•Electrical Energy Storage(EES)•Local power generation•Daily power demand and solar supply profile

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Delay power demand and solar supply profile

Fig.:1, Delay power demand and solar supply profile

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SYSTEM MODEL

Fig:2, System Model

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A. PV Modules

B.EES Elements

C. Electricity Pricing Policy

D. Residential PV and Electrical Energy Storage system

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A. PV modules• Cost•Performance of PV modules•Conclusion

B.EES elements• Commercial EES elements• Comparison of EES elements• Section

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PERFORMANCE & COMPARISON OF EES ELEMENTS

Table:1, Performance & Comparison of EES elements

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C. Electricity pricing policy•Time of day policy•Typical electricity pricing policy

Table :2, Typical Electricity Pricing Policy

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D. Residential PV and Energy Storage System

Fig:3, Residential PV& Energy Storage System• Converters control the energy flow• Converter#1 : DC-AC converter• Converter#2 : Unidirectional DC-DC converter• Converter#3 : Bidirectional converter(DC-AC inverter & AC-

DC Rectifier)

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DAILY ENERGY FLOW CONTROL

•First investigate the savings when equipped with PV modules

A. Daily Energy Control Problem•Two fold energy flow control •To shift the peak output power of PV modules for

better load peak saving•Store energy during the base hours

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• The load energy cost reduction is given by,

where,

• The additional cost from charging the EES during base hours:

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Where,

B. Daily Battery Usage Control Problem• Fully charging and discharging of batteries• Reduce demand from the grid• Severe aging effect

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SIMULATION RESULTSDaily Control Results• Due to higher discharge efficiency, PV-Li achieves

averagely 7.42% more daily energy cost reduction in low season than PV lead and 7.78% more in high season

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ADVANTAGES• Reducing their reliance on grid electricity more than ever before possible.

• Save money on electricity bills.

• Electricity produced by solar cells is clean and silent 

• Photovoltaic systems are quiet and visually unobtrusive

• Small-scale solar plants can take advantage of unused space on rooftops of existing buildings

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•Solar energy is a locally available renewable resource.

•A PV system can be constructed to any size based on energy requirements

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DISADVANTAGES• Some toxic chemicals, like cadmium and arsenic, are used in

the PV production process.

•  More expensive to produce than conventional sources of energy .

• Solar power is a variable energy source, with energy production dependent on the sun. 

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FUTURE SCOPE• The use of micro inverters must take place in order to take

care of any shading issues while making the system more reliable

• Future of solar PV looks promising, as beyond 2020 reach the point where solar is cost-competitive with electricity produced from conventional sources of energy.

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CONCLUSION• The optimal solution of the daily energy flow control problem

to maximize the daily energy cost reduction for PV and EES bank’s capacities.

• The characteristics of EES system (Life time and performance degradation of the system).

• Simulation result show that over system achieves a break even time of 6 years and 8% annual profit%

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REFFERENCES[1] Optimal Design and Management of a Smart Residential PV and

Energy Storage System .Di Zhu, Yanzhi Wang, Naehyuck Chang, and Massoud Pedram University of Southern California, CA, USA, Seoul National University, Korea {dizhu ,yanzhiwa, pedra }@usc.edu , naehyuck@elpl.snu.ac.kr

[2] H. Bindner, T. Cronin, P. Lundsager, J.F. Manwell, U. Abdulwahid, I. Baring-Gould, "Lifetime modeling of lead acid batteries," Risø National Laboratory, 2005.

[3] K. Branker, M. J. M. Pathak, J. M. Pearce, "A review of solar photovoltaic levelized cost of electricity," Renewable and Sustainable Energy Reviews, vol. 15, no. 9, 2011.

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[4] M. Broussely, S. Herreyre, P. Biensan, P. Kasztejna, K. Nechev, R.J. Staniewicz, "Aging Mechanism in Li-ion Cells and Calendar Lfie Prediction," Journal of Power Sources, 2001.

[5] Consolidated Edison Company of New York Inc., "Service Classification No. 1 – Residential and Religious," 2012.

[6] T. T. Ha Pham, W. Frédéric, and S. Bacha. "Optimal operation of a PV based multi-source system and energy management for household application," IEEE International Conference on Industrial Technology, 2009.

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QUESTIONS..???

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THANKYOU..!!!!!!