Analysis of Status of Photovoltaic and Wind Power Abandoned in China

Li, Shimin; Wang, Jing; Liu, Qiong; Li, Lingyan; Hua, Yaping; Liu, Wei

doi:10.4236/jpee.2017.51007

Cited by 21 publications

(8 citation statements)

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“…However, the majority of renewable energy resources have inherent intermittency and instability characteristics, which results in the carryover of oscillation and unreliability to the power network. For example, 6% photovoltaic power and 12% wind power was wasted in China in 2017 [3]. Electrical energy Storage (EES) that converts electrical energy into another form of energy for storage and converts it back to electrical energy when required, is considered as one of the most promising solutions for increasing the penetration depth of renewable energy resources [4,5].…”

Section: Introductionmentioning

confidence: 99%

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Cyclic transient behavior of the Joule–Brayton based pumped heat electricity storage: Modeling and analysis

Wang

Lin

Chai

et al. 2019

Renewable and Sustainable Energy Reviews

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Pumped heat electricity storage (PHES) has the advantages of a high energy density and high efficiency and is especially suitable for large-scale energy storage. The performance of PHES has attracted much attention which has been studied mostly based on steady thermodynamics, whereas the transient characteristic of the real energy storage process of PHES cannot be presented. In this paper, a transient analysis method for the PHES system coupling dynamics, heat transfer, and thermodynamics is proposed. Judging with the round trip efficiency and the stability of delivery power, the energy storage behavior of a 10 MW/4 h PHES system is studied with argon and helium as the working gas. The influencing factors such as the pressure ratio, polytropic efficiency, particle diameters, structure of thermal energy storage reservoirs are also analyzed. The results obtained indicate that, mainly owing to a small resistance loss, helium with a round-trip efficiency of 56.9% has an overwhelming advantage over argon with an efficiency of 39.3%. Furthermore, the increases in the pressure ratio and isentropic efficiencies improve the energy storage performance considerably. There also exit optimal values of the delivery compression ratio, particle sizes, length-to-diameter ratios of the reservoirs, and discharging durations corresponding to the maximum round-trip efficiency and preferable discharging power stability. The above can provide a basis for the optimal design and operation of the Joule-Brayton based PHES.

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Section: Introductionmentioning

confidence: 99%

“…However, the majority of 35 renewable energy resources have inherent intermittency and instability characteristics, which 36 results in the carryover of oscillation and unreliability to the power network. For example, 6% 37 photovoltaic power and 12% wind power was wasted in China in 2017 [3]. Electrical energy 38…”

Section: Introduction 28mentioning

confidence: 99%

Cyclic transient behavior of the Joule–Brayton based pumped heat electricity storage: Modeling and analysis

Wang

Lin

Chai

et al. 2019

Renewable and Sustainable Energy Reviews

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“…Because of the “antipeak regulation” characteristic and intermittent nature of wind power, it is largely abandoned, even if the transmission capacity from the clustered wind farms to the grid is sufficient. The wind power accommodated by the power system changes continually at different locations and times because of many factors, such as the load characteristics, dispatching mode, reserve capacity, frequency regulation, and peak regulation.…”

Section: Model Of Optimizing Capacities Of a Wind‐hydrogen Power Systemmentioning

confidence: 99%

Optimizing unit capacities for a wind-hydrogen power system of clustered wind farms

Jiang

Bu-ying

Wang

2018

Int Trans Electr Energ Syst

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Summary In general, wind power output of clustering wind farms must be massively transmitted. The wind power in each wind farm is correlated, intermittent, fluctuant, and cannot be accommodated all the time, causing the intractable decision of economical transmission capacity of a project transmitting wind power to a power grid. Furthermore, the drastic fluctuation of clustered wind power results in enormous challenges regarding the safety of a power system. For these reasons, the concept of a wind‐hydrogen power system for clustered wind farms is proposed. Next, a multiobjective model for optimizing the capacities, including the transmission project, hydrogen‐producing system, and fuel cells, is constructed based on the joint distributed character of wind speed, which consists of maximizing social benefit and the qualified rate of smoothing clustering wind power fluctuations. Finally, a case is analyzed in detail, accounting for the wind volatility, wind curtailment probability, and the costs of both hydrogen production and the fuel cells.

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“…Especially for the world's largest country in renewable energy power generation, China is also the largest contributor to renewables growth [9]. However, it also evokes some issues, such as the phenomenon of abandoning wind, sun, and water [10,11]. These are mainly due to the conflicts between the concentrated, large-scale construction of renewable energy power generation and limited local consumption, lacking in trans-regional market mechanism [12,13].…”

Section: Introductionmentioning

confidence: 99%

Decisions in Power Supply Chain with Emission Reduction Effort of Coal-Fired Power Plant under the Power Market Reform

Huang

et al. 2020

Sustainability

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Sustainability in power supply chain has been supported by emission reduction of coal-fired power generation and increasing renewable energy power generation. Under the power market reform of direct power purchase transactions, this paper focuses on the channel selection and emission reduction decisions of power supply chain. From the theoretical perspective, this paper develops the decision-making models of centralized and decentralized power supply chain, which consist of one renewable energy power generation enterprise, one coal-fired power plant and one power grid enterprise. The optimal strategies of power quantities and profits for power supply chain members and their corresponding numerical experiments are analyzed in different cases. The results show that there are for renewable energy power generation enterprise A, and for coal-fired power plant B, which indicate that the direct power purchase channel in the centralized scenario is conducive to promoting the transaction quantity of renewable energy power generation, as well as the on-grid power quantity and emission reduction efforts of coal-fired power plant B. Furthermore, the profit of whole power supply chain could be enhanced by the increasing on-grid power preference coefficient of coal-fired power generation, subsidy for renewable energy power generation and preference coefficient for clean production, and by the decreasing emission reduction cost coefficient of coal-fired power plant. Additionally, the emission reduction effort of coal-fired power plant is positively relevant with preference coefficient for clean production, whereas it is negatively relevant with power grid wheeling charge, emission reduction cost coefficient and subsidy for renewable energy power generation. Our findings can provide useful managerial insights for policymakers and enterprises in the sustainability of power supply chain.

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Analysis of Status of Photovoltaic and Wind Power Abandoned in China

Cited by 21 publications

References 0 publications

Cyclic transient behavior of the Joule–Brayton based pumped heat electricity storage: Modeling and analysis

Cyclic transient behavior of the Joule–Brayton based pumped heat electricity storage: Modeling and analysis

Optimizing unit capacities for a wind-hydrogen power system of clustered wind farms

Decisions in Power Supply Chain with Emission Reduction Effort of Coal-Fired Power Plant under the Power Market Reform

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