Universiti Teknologi Malaysia Institutional Repository

Peak-off-peak load shifting for optimal storage sizing in hybrid power systems using Power Pinch Analysis considering energy losses

Mohammad Rozali, Nor Erniza and Ho, Wai Shin and Wan Alwi, Sharifah Rafidah and Abdul Manan, Zainuddin and Klemes, Jirí Jaromír and Mohd. Yunus, Mohamad Nur Salam and Syed Mohd. Zaki, Syed Amarul Adli (2018) Peak-off-peak load shifting for optimal storage sizing in hybrid power systems using Power Pinch Analysis considering energy losses. Energy, 156 . pp. 299-310. ISSN 0360-5442

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1016/j.energy.2018.05.020

Abstract

The difference in electricity pricing based on the time of power use has led to load shifting from peak to off-peak hours in hybrid power systems (HPS). Apart from optimising electricity cost, shifting of the load may also change the capacity of storage in the system. Power Pinch Analysis has been recently applied to guide load shifting aiming to minimise the cost of electricity, considering the peak and off-peak electricity pricing. The HPS was assumed to be ideal with 100% efficiency, which is not achievable in actual operational condition. This work extends the study by scrutinising the effects of peak-off-peak load shifting on the capacity of storage in HPS. The effects of energy losses due to the inefficiency during power conversion, transfer and storage in the HPS are considered in developing shifting heuristics to ensure optimal storage size is achieved. Implementation of the proposed load shifting strategy on a case study demonstrates that a reduction of up to 30% in the storage size can be achieved, which led to a minimum storage cost. The distribution of peak hours’ demand to off-peak hours also successfully provide significant savings in the electricity bill.

Item Type:Article
Uncontrolled Keywords:Energy losses, Load shifting
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:84737
Deposited By: Widya Wahid
Deposited On:27 Feb 2020 12:53
Last Modified:27 Feb 2020 12:53

Repository Staff Only: item control page