Methodology for evaluation of grid-tie connection of distributed energy resources - Case study with photovoltaic and energy storage

Reliability evaluation of electric power systems with solar photovoltaic & energy storage

“…The time series Uniform Singapore Energy Price (USEP) in year 2010 in $/MWH is the primary information used in modelling to analyze the annual electricity cost, as shown in (9). USEP is the energy purchase paid by retailers.…”

“…The USEP time series of year 2010 can be convoluted with a load duration curve (LDC), conventional & solar power generation, energy storage (ES) time series, as shown in (9) to yield annual energy cost expected, where, only ሼሺS ୬ െ X% * L ୬ ሻ > 0ሽ in time series are considered. α(S n , X%, L n ) is the annual energy cost in S$, β n is USEP in S$/MWH, DR is demand response signal, is n th interval of ES Charge, is n th interval of ES Discharge, is ES maximum storage in MWH, is ES minimum storage in MWH, m is PV PIC ranging from 0~50% of total generation capacity, S n is n th interval PV power from solar irradiance, X% is percentage of maximum allowable PV energy to meet the load demand, L n is n th interval LDC, CD n is n th interval Energy Storage (ES) charging / discharging limit, k is total interval of reliability simulation, and j is percentage of demand.…”

“…RPS mechanism places an obligation on ISOs to have a minimum percentage of their energy mix from an approved renewable energy source. The variability of PV resource added into the energy mix has impacts on power system reliability, which leads to studies for better grid reliability while dealing with an aging infrastructure, and one of the several options is ES as described in [7][8][9][10].…”

Power loss minimization in distribution systems using multiple distributed generations

“…By employing DG units that are distributed near load centers, distribution system reliability will be obviously improved. Furthermore, many nations are following a strategy to increase the use of renewable DG units due to environmental pollution and the limitation of fossil fuels resources .…”

Improving energy efficiency of cyclone circuits in coal beneficiation plants by pump-storage systems

“…Although many studies have been done on the power generating plants concerning generation dispatching [4,5,6], maintenance scheduling [7,8,9] and renewable energy integration [10], little attention has been paid to the power plants' contracted coal mines [11]. The focus of this study is to improve energy efficiency of the power station contracted coal mines so that the mine itself and the power station can benefit from such improvement.…”