Technical feasibility study on a standalone hybrid solar-wind system with pumped hydro storage for a remote island in Hong Kong

Ma, Tao; Yang, Hongxing; Lu, Lin; Peng, Jinqing

doi:10.1016/j.renene.2014.03.028

Cited by 325 publications

(160 citation statements)

References 33 publications

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“…From Table 3, it is clear that the ASA has a very good performance for the unimodal test functions. The ASA algorithm shows obvious advantage over the competitors in the remainder of high dimension unimodal functions, except for F 4 and F 6 . The multimodal test functions with high dimension are relatively difficult to optimize because they have many local optimal values and one optimal global value.…”

Section: Comparison Results On Benchmark Functionsmentioning

confidence: 99%

“…It is obvious that the improved Suter transformation method eliminate the "S" characteristics, the uneven distribution, cross and aggregation of the curves. According to the above content, the calculation model of pump-turbine could be summarized as Equation (6):…”

Section: Modelling Of Pump-turbinementioning

confidence: 99%

“…Energy storage devices like batteries [2,3], flywheels [4] and pumped storage units (PSUs) [5] are indispensable in RE-connected power systems to mitigate this problem. Among these, PSUs might be the most economical and mature tool for power storage [6]. In addition, PSUs have good performance in peak load shaving, frequency regulation and emergency response in power systems [7].…”

Section: Introductionmentioning

confidence: 99%

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An Integrated Start-Up Method for Pumped Storage Units Based on a Novel Artificial Sheep Algorithm

Wang

Lai

et al. 2018

Energies

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Pumped storage units (PSUs) are an important storage tool for power systems containing large-scale renewable energy, and the merit of rapid start-up enable PSUs to modulate and stabilize the power system. In this paper, PSU start-up strategies have been studied and a new integrated start-up method has been proposed for the purpose of achieving swift and smooth start-up. A two-phase closed-loop startup strategy, composed of switching Proportion Integration (PI) and Proportion Integration Differentiation (PID) controller is designed, and an integrated optimization scheme is proposed for a synchronous optimization of the parameters in the strategy. To enhance the optimization performance, a novel meta-heuristic called Artificial Sheep Algorithm (ASA) is proposed and applied to solve the optimization task after a sufficient verification with seven popular meta-heuristic algorithms and 13 typical benchmark functions. Simulation model has been built for a China's PSU and comparative experiments are conducted to evaluate the proposed integrated method. Results show that the start-up performance could be significantly improved on both indices on overshoot and start-up, and up to 34%-time consumption has been reduced under different working condition. The significant improvements on start-up of PSU is interesting and meaning for further application on real unit.

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Section: Comparison Results On Benchmark Functionsmentioning

confidence: 99%

Section: Modelling Of Pump-turbinementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Integrated Start-Up Method for Pumped Storage Units Based on a Novel Artificial Sheep Algorithm

Wang

Lai

et al. 2018

Energies

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“…In addition, the joint operation of a pumped storage power station and renewable energy station has been proved to be helpful in reducing the phenomenon of discard wind and solar [6]. In [7][8][9][10][11][12], the application of a small or micro pumped storage system in an isolated microgrid is studied. A seawater desalination system powered by renewable energy and a pumped storage system are designed in [7].…”

Section: Introductionmentioning

confidence: 99%

“…A seawater desalination system powered by renewable energy and a pumped storage system are designed in [7]. In [8], the feasibility of the technology of a island wind/solar/pumped storage system is analyzed, and the results show that it is feasible to use a small seawater pumped storage system. Software for a hybrid system consisting of wind/solar/battery/pumped storage/seawater desalination is developed in [9].…”

Section: Introductionmentioning

confidence: 99%

Sizing optimization for island microgrid with pumped storage system considering demand response

Jing

Zhu

2017

J. Mod. Power Syst. Clean Energy

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Currently, small islands are facing an energy supply shortage, which has led to considerable concern. Establishing an island microgrid is a relatively good solution to the problem. However, high investment costs restrict its application. In this paper, micro pumped storage (MPS) is used as an energy storage system (ESS) for islands with good geographical conditions, and deferrable appliance is treated as the virtual power source which can be used in the planning and operational processes. Household acceptance of demand response (DR) is indicated by the demand response participation degree (DRPD), and a sizing optimization model for considering the demand response of household appliances in an island microgrid is proposed. The particle swarm optimization (PSO) is used to obtain the optimal sizing of all major devices. In addition, the battery storage (BS) scheme is used as the control group. The results of case studies demonstrate that the proposed method is effective, and the DR of deferrable appliances and the application of MPS can significantly reduce island microgrid investment. Sensitivity analysis on the total load of the island and the water head of the MPS are conducted.

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Optimal techno‐economic analysis of a renewable based hybrid microgrid incorporating gravity energy storage system in Indian perspective using whale optimization algorithm

Dhar

Chakraborty

2021

Int Trans Electr Energ Syst

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A grid connected renewable energy based hybrid microgrid, incorporating solar PV, biomass generators, and Gravity Energy storage system (GESS) has been proposed in this article. This is done to provide uninterrupted energy to a hilly village of North-East India. A bi-directional energy transaction with the central grid is considered for handling uncertainties and to gain monetary benefit through energy sale. The GESS is only charged through solar PV and biomass generators, to reduce the carbon footprint. The outward energy transaction with the central grid helps in reducing the energy cost for consumers inside the microgrid. Transaction price of energy from the central grid is considered from historical data available in the website of Indian Energy Exchange Limited (IEX). For different combinations of loading pattern and GESS initial storage, the Levelized cost of energy (LCOE) is found to vary in between INR 2.71/kWh to INR 3.41/kWh, which is lower than the current Nagaland state government approved tariff of INR 3.55/kWh. Any subsidy List of Symbols and Abbreviations: G H i , hourly solar insolation data (W/m 2 ); P H L , hourly load demand (kW); P H S , hourly load served through solar PV modules (kW); BG1 H O , hourly output of biomass generator 1 (kW); BG1 Max O , maximum output of biomass generator 1 (kW); P H BG1 , hourly energy served to the load through biomass generator 1 (kW); BG2 H O , hourly output of biomass generator 2 (kW); BG2 Max O , maximum output of biomass generator 2 (kW); P H BG2 , hourly load demand served through biomass generator 2 (kW); E H GESS , current energy storage of GESS (kW); E Min GESS , minimum energy storage of GESS (kW); P H GESS , hourly generation from GESS (kW); P H Grid_buy , hourly Energy bought from grid (kW); P H Excess , excess energy generated per hour (kW); C H GESS , GESS charging energy (kW); P H Grid_sale , energy sold to grid (kW); N S PV , number of solar panels in series; N P PV , number of solar panel in parallel; P STC S , power generation from single solar panel in STC (335 W); G STC , solar irradiance at STC (1000 W/m 2 ); α, temperature coefficient of the modulus (0.043% / o C); T c , PV panel cell temperature ( C); T STC c , PV panel cell temperature at STC (25 C); T air amb , ambient air temperature; G NOCT , solar irradiance at NOCT (800 W/m 2 ); NOCT, nominal operating cell temperature (45.5 C); η BG , biomass conversion efficiency (21%); M BM , total biomass available for power generation (Ton/yr); C BM , calorific value of biomass (4700 kcal/kg); H BG , operating hour of biomass generator (12 Hr); D T , underground vertical tunnel of depth of GESS; H SW , height of the suspended weight of GESS (m); d SW , diameter of the suspended weight (m); V SW , volume of suspended weight (m 3 ); ρ SW , density of the material of the suspended weight (kg/m 3 ); η GESS , roundtrip efficiency of GESS; F M , force exerted by the DC motor (N); T m , motor torque; P m SS , steady state power of motor (watt); A Wire , cross-sectional area of wire (m 2 ); σ wire , te...

show abstract

Technical feasibility study on a standalone hybrid solar-wind system with pumped hydro storage for a remote island in Hong Kong

Cited by 325 publications

References 33 publications

An Integrated Start-Up Method for Pumped Storage Units Based on a Novel Artificial Sheep Algorithm

An Integrated Start-Up Method for Pumped Storage Units Based on a Novel Artificial Sheep Algorithm

Sizing optimization for island microgrid with pumped storage system considering demand response

Optimal techno‐economic analysis of a renewable based hybrid microgrid incorporating gravity energy storage system in Indian perspective using whale optimization algorithm

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