Optimal photovoltaic capacity of large-scale hydro-photovoltaic complementary systems considering electricity delivery demand and reservoir characteristics

Zhang, Y.; Ma, Chao; Lian, Jijian; Pang, Xiaolu; Qiao, Yanan; Chaima, Evance

doi:10.1016/j.enconman.2019.05.036

Cited by 87 publications

(25 citation statements)

References 40 publications

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“…Scholars have finalized various researches whose findings have helped to improve the solar PV power plants' yield performance and strengthen the coordination between solar PV power and the grids [42,43]. In the past five years, scholars have tried to combine solar PV power with other energy sources and have researched solar energy coupling with wind energy and hydropower [44,45] and proven the feasibility from a technical standpoint. On-grid solar PV power plants integrated with battery storage systems could alleviate the transmission burdens of the grids, and off-grid solar PV systems with batteries can guarantee the electricity supply [46,47].…”

Section: Literature Reviewmentioning

confidence: 99%

Exploring Opportunities and Challenges of Solar PV Power under Carbon Peak Scenario in China: A PEST Analysis

Wang

Yang

et al. 2021

Energies

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China has experienced rapid social and economic development in the past 40 years. However, excessive consumption of fossil fuel energy has caused an energy shortage and led to severe environmental pollution. To achieve sustainable development, China is striving to transform its growth mode. Adopting renewable energy (RE) including solar photovoltaic (PV) power is an effective measure. How to promote the further development of solar PV power under the scenario of China’s aspirational target of carbon peak by 2030 and 20% RE ratio in the energy mix remains a theme that need to be addressed. This paper analyzes the potential opportunities and challenges confronting solar PV power in China. The analysis covers the dimensions of political, economic, social, and technological (PEST). The results revealed a significant prospect for the further deployment of solar PV power in the coming decades. The aggressive estimated installed capacity of solar PV power is expected to reach 80+ GW annually. To successfully achieve the goal of 80+ GW, barriers that hinder the further development of solar PV power have to be eliminated. Suggestions for policymakers include maintaining enforceability and continuity of policies, favorable financial supports, mandatory RE quotas for all parties, and supporting fundamental R&D. Suggestions for the solar PV industry include full utilization of integrated applications, set up an after-sales service network, collaborative innovation among the industry chain, and engaging in storage and hydrogen technology. The findings are greatly beneficial for policymakers and the solar PV industry.

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Section: Literature Reviewmentioning

confidence: 99%

Exploring Opportunities and Challenges of Solar PV Power under Carbon Peak Scenario in China: A PEST Analysis

Wang

Yang

et al. 2021

Energies

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“…Therefore, the application of energy storage batteries is of tremendous significance for reducing the abandonment of electricity and improving the utilization rate of PV power stations. The relationship between the annual abandoned electricity rate and energy storage capacity is satisfied by a polynomial fitting to Equation (19).…”

Section: Optimal Energy Storage Capacitymentioning

confidence: 99%

“…In Equation (19), x c is the energy storage capacity and r ab is the corresponding annual abandoned electricity rate of the PV power station.…”

Section: Optimal Energy Storage Capacitymentioning

confidence: 99%

“…Recent studies and practices have shown that complementary energies, such as energy storage and hydropower, are effective measures to reduce the output fluctuation of a PV power plant and achieve complementary output to meet the grid connection requirements. Hydropower is the most reliable complementary energy because of its low cost, high installed capacity, good regulation performance, and high reservoir storage capacity [17][18][19][20][21]. However, hydropower stations have higher requirements on the construction sites and environmental factors, such as abundant water sources, rich precipitation, good geological foundation, and large difference in elevation.…”

Section: Introductionmentioning

confidence: 99%

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Research on Energy Storage Optimization for Large-Scale PV Power Stations under Given Long-Distance Delivery Mode

Yang

Lian

et al. 2019

Energies

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Western China has good conditions for constructing large-scale photovoltaic (PV) power stations; however, such power plants with large fluctuations and strong randomness suffer from the long-distance power transmission problem, which needs to be solved. For large-scale PV power stations that do not have the conditions for simultaneous hydropower and PV power, this study examined long-distance delivery mode and energy storage optimization. The objective was to realize the long-distance transmission of electrical energy and maximize the economic value of the energy storage and PV power storage. For a large-scale PV power station, the energy storage optimization was modelled under a given long-distance delivery mode, and the economic evaluation system quantified using the net present value (NPV) of the battery was based on the energy dispatch optimization model. By contrast, a lithium battery performance model was developed. Therefore, further analysis of the economics of the energy storage and obtaining the best capacity of the energy storage battery and corresponding replacement cycle considered battery degradation. The case study of Qinghai Gonghe 100 MWp demonstration base PV power station showed that the optimal energy storage capacity was 5 MWh, and the optimal replacement period was 2 years. Therefore, the annual abandoned electricity was reduced by 3.051 × 10 4 MWh compared with no energy storage. The utilization rate of both the PV power station and quality of the delivered electricity were modelled to realize a long-distance transmission to the grid net. This will have an important guiding significance to develop and construct large-scale single PV power stations.

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“…Reservoir systems have lower investment costs; however, they do not allow energy accumulation from other sources. The optimal sizing of large-scale hydro-PV hybrid systems based on electricity delivery demand and reservoir profile is analysed in [13]. It has been shown that proper water reservoir regulation improves the complementarity between PV and hydro.…”

Section: Introductionmentioning

confidence: 99%

Run-of-the-River Hydro-PV Battery Hybrid System as an Energy Supplier for Local Loads

2021

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Hybrid hydro energy systems are usually analysed with pumped hydro storage systems, which can facilitate energy accumulation from other sources. Despite the lack of water storage, run-of-the-river hydropower plants are also attractive for hybrid systems owing to their low investment cost, short construction time, and small environmental impact. In this study, a hybrid system that contains run-of-the-river small hydro power plants (SHPs), PV systems, and batteries to serve local loads is examined. Low-power and low-head schemes that use variable-speed operation are considered. The novelty of this study is the proposal of a dedicated steady-state model of the run-of-the-river hydropower plant that is suitable for energy production analysis under different hydrological conditions. The presented calculations based on a real SHP of 150 kW capacity have shown that a simplified method can result in a 43% overestimation of the produced energy. Moreover, a one-year analysis of a hybrid system operation using real river flow data showed that the flow averaging period has a significant influence on the energy balance results. The system energy deficiency and surplus can be underestimated by approximately 25% by increasing the averaging time from day to month.

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Optimal photovoltaic capacity of large-scale hydro-photovoltaic complementary systems considering electricity delivery demand and reservoir characteristics

Cited by 87 publications

References 40 publications

Exploring Opportunities and Challenges of Solar PV Power under Carbon Peak Scenario in China: A PEST Analysis

Exploring Opportunities and Challenges of Solar PV Power under Carbon Peak Scenario in China: A PEST Analysis

Research on Energy Storage Optimization for Large-Scale PV Power Stations under Given Long-Distance Delivery Mode

Run-of-the-River Hydro-PV Battery Hybrid System as an Energy Supplier for Local Loads

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