| 1. |
- Jiang, Mingkun, et al.
(författare)
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Using Existing Infrastructure to Realize Low-Cost and Flexible Photovoltaic Power Generation in Areas with High-Power Demand in China
- 2020
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Ingår i: iScience. - : Elsevier Inc.. - 2589-0042. ; 23:12
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Tidskriftsartikel (refereegranskat)abstract
- Energy Policy; Energy Resources; Energy Systems; Energy Management © 2020 This study develops a new concept involving using the existing infrastructure for photovoltaic (PV) generation to reduce the costs associated with increased land use and to avoid curtailment due to the mismatch between power supply and demand. We establish a method to estimate the technological potential and economic performance of the PV systems deployed in coal-fired power plants in China. The potential capacity of the examined 1,082 units in China reaches 4 GWe, which is equivalent to 32% of China's newly installed distributed PV capacity in 2019. A total of 87% of PV systems achieve plant-side grid parity compared with desulfurized coal benchmark electricity prices. To the best of our knowledge, this is the first study that investigates the use of rooftops and coal storage sheds in power plants to facilitate low-cost, flexible PV power generation, thus opening a new channel for future PV generation development.
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| 2. |
- Jiang, Mingkun, et al.
(författare)
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A techno-economic comparison between grounding PV and floating PV for shore power generation : Case study of Yangshan port
- 2020
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Ingår i: Energy. Proc.. - : Scanditale AB.
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Konferensbidrag (refereegranskat)abstract
- Electrification is taking place to reduce the emissions from maritime transportation by substituting ships’ auxiliary engine generation with shore power systems, therefore the power demand at berths increases dramatically. In this paper, we take Yangshan Port as an example to evaluates the feasibility of different photovoltaics (PV) technologies to suffice shore power demand based on geographic information system. The results show the potential shore power demand at Yangshan port is 288.8 MW, which can be sufficed by deploying PV either on available land or on water area. The further techno-economic comparison between conventional grounding PV and floating PV reveals that although the system cost of floating PV is higher than grounding PV, the higher efficiency of floating PV due to the cooling effect of water, in turn, results in a lower levelized cost of electricity (LCOE). The LCOE of all types of PV system is much lower than the retail electricity rate at Yangshan Port, which indicates that with the assistance of PV technology, high cost, the biggest hindrance of prompting shore power at Yangshan port can be overcome, and integrating PV technology at ports is a promising and practical solution to cope with electrification trend in the maritime transportation sector.
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| 3. |
- Jiang, M., et al.
(författare)
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An Assessment Of Pv Accommodation Capacity In Power Plants : A Case Study Of China
- 2019
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Ingår i: Energy. Proc.. - : Scanditale AB.
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Konferensbidrag (refereegranskat)abstract
- As China delivering on the promise on energy transition, its photovoltaics(PV) market has become the biggest in the world, the total installed PV capacity has reached 180 GW. However, to meet the goal on 20% of total energy consumption from renewable sources, PV potential is appealing to continue release. Currently, PV deployment in China mainly focuses on residential rooftop PV systems and utility-scale PV plants, and is somehow stuck by curtailment. Distributed PV system for industrial users that has have many advantages is promising to achieve completely consumption onsite yet is still lack of investigation. Here, we present an assessment on the potential PV accommodation capacity in China’s power plants by using abundant real data from power plants and geographic information system(GIS). The results show the accommodation capability of PV is 31.30 GW in power generation sector, or 3.73×1010 kWh for auxiliary power demand and is able to reduce 5.81×107 tons of CO2 and 9.70×103 tons of PM2.5 annually.
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| 4. |
- Jiang, M., et al.
(författare)
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Performance analysis of a photovoltaics aided coal-fired power plant
- 2019
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Ingår i: Energy Procedia. - : Elsevier Ltd. - 1876-6102. ; , s. 1348-1353
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Konferensbidrag (refereegranskat)abstract
- In this article, integration of photovoltaics (PV) into a coal-fired power plant was proposed. The performance including economic analysis and environmental impact was conducted by a case study in the northwest area of China. The results show that the PV system can replace part of auxiliary power consumption using renewable electricity to reduce internal power consumption and the emissions. Due to the feature of the integration into a power plant, the curtailment of solar PV electricity does not occur compared to stand-alone PV system. The investment cost, operation and maintenance (O&M) expenditure were feasible compared with other PV power generation plants.
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| 5. |
- Li, Y., et al.
(författare)
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A Decision-making Framework for the Site Selection of PV Deployment along High-speed Railway
- 2021
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Ingår i: Energy Proceedings. - : Scanditale AB.
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Konferensbidrag (refereegranskat)abstract
- The development of photovoltaic industry can effectively alleviate the energy crisis and environmental pollution. The deployment of photovoltaic power stations along the high-speed railway is a new mode combining photovoltaic new energy with infrastructure. This paper constructs a comprehensive decision-making framework for the site selection of PV power station along high-speed railway combining the subjective method and the objective method. A scientific and reasonable evaluation index system comprehensively considering multiple factors is constructed in this framework. Analytic hierarchy process and Entropy weight method are combined to determine the weight of every index, which combines the expert knowledge and data information effectively, relatively reducing systematic error and random error. Grey relational analysis is used to choose scheme among several alternatives, which greatly deal with the strong grey correlations among indexes. The framework established in this paper is used to select PV power stations along the Beijing-Shanghai high-speed railway, which also verifies the effectiveness of the framework.
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| 6. |
- Li, Y., et al.
(författare)
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CO2 emissions reduction by switching conference online : Uncertainty analysis of global air travel
- 2020
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Ingår i: Energy Proceedings. - : Scanditale AB.
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Konferensbidrag (refereegranskat)abstract
- Ideally, primary data collection is recommended for every life cycle assessment (LCA) study. However, due to limited availability or accessibility to first-hand data, related sources of secondary data can be a good alternative in practice. In this work, the uncertainty of using secondary data from the Ecoinvent Life Cycle Inventory (LCI) database is illustrated with an LCA case study on global air travel. Inside the database, both parameters’ basic uncertainty from measurements and additional uncertainty from data quality criteria are considered with the pedigree approach. The effect of updated pedigree matrix coefficients is also evaluated. Furthermore, the sensitivity with respect to the choice of system boundary is studied with a hotspot analysis for air travel. Outside the database, the uncertainty associated with mapping real world processes to those available in the database is analyzed. In particular, the influence of flight specific parameters, e.g. plane type and occupancy level, is assessed by comparing the International Civil Aviation Organizations (ICAO) carbon emissions calculator with database calculations. The results show that emissions calculated by ICAO generally lie on the lower end of confidence intervals provided by uncertainty analysis of the database, especially for very long-haul flights. Finally, for the LCA case study on air travel, a two-step method combining the advantages of both the ICAO calculator and the Ecoinvent database is proposed.
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