Renewable Curtailment as a Power System Flexibility Resource

Olson, Arne; Jones, Richard M.; Hart, Elaine K.; Hargreaves, Jeremy

doi:10.1016/j.tej.2014.10.005

Cited by 35 publications

(16 citation statements)

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“…29 Both the curtailment of renewable energy and the lag of renewable energy subsidies, however, restrict the development of renewables greatly. 30 In this paper, there are 3 specific objectives to analyze: (1) what the current situation of China's renewable curtailment is, (2) how serious the renewable curtailment and low accommodation capability in China is, and (3) what kind of the solution to such a bad accommodation is. In recent years, the renewables in China develops rapidly ( Figure 1).…”

Section: Issuesmentioning

confidence: 99%

“…The construction of renewable energy power plants is lack of overall planning, which results in a certain disorder phenomenon. 3 The power grid is behind time in planning and construction, which limits the electricity accommodation and transmission among provinces.…”

Section: Trend Analysismentioning

confidence: 99%

“…2 There is no balance between resource endowment and regional economic development, so the layout causes the limit of power accommodation capability. 3 The power supply structure is unbalanced, and the amount of centralized renewables generation is much more than that of distributed one. 4…”

Section: Economic Aspectmentioning

confidence: 99%

“…However, the excess supply of renewable power generation occurs frequently in the worldwide. [3][4][5][6] Most of the countries have suffered more serious troubles such as wind curtailment and/or PV curtailment, and some measures are gradually taken to solve those. Measures taken include changing the electricity market operation mode, 7 constructing the transmission channels, 8 improving the electricity price mechanism, 9 and increasing other flexible units such as hydropower and gas power.…”

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Wind power and photovoltaic power: How to improve the accommodation capability of renewable electricity generation in China?

Liu

Chu

2018

Int J Energy Res

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China's wind curtailment and photovoltaic curtailment was one of the prominent issues in 2014, and the renewable curtailment worsened in 2015. With the rapid growth of renewables, the phenomenon of the insufficiency in renewable accommodation capability is becoming more and more serious in 2016. In that case, the problem of the insufficient accommodation capability is pointed out by analyzing China's development requirements. The renewable power generation scale, the renewable power consumption, and the restrictions on the renewable electricity generation are discussed from the China's market perspective. Meanwhile, the legal environment, the planning requirement, the institutional setting, and the policy tools are introduced from the perspective of governmental regulation. An empirical analysis, a cause analysis and a trend analysis are illustrated before explaining the problem of renewable curtailment and proposing a solution for enhancing the accommodation capability. According to the analysis results, the solution for addressing the wind curtailment and PV curtailment is offered with respect to the technology, the institution, the legislation, and the political aspect. Through the research, the research conclusions are drew finally and the corresponding policy recommendations are put forward.

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Section: Issuesmentioning

confidence: 99%

Section: Trend Analysismentioning

confidence: 99%

Section: Economic Aspectmentioning

confidence: 99%

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confidence: 99%

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Wind power and photovoltaic power: How to improve the accommodation capability of renewable electricity generation in China?

Liu

Chu

2018

Int J Energy Res

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“…If this happens, the surplus energy has to be transmitted, stored, or become curtailed [75][76][77]. If in the future the frequency and duration of these periods increase [78], another approach is to transfer the surplus energy into other sectors.…”

Section: Changes In Conceptmentioning

confidence: 99%

Flexible bioenergy supply for balancing fluctuating renewables in the heat and power sector—a review of technologies and concepts

et al. 2015

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Today bioenergy plays a major role in the renewable energy provision, for heat and power and for liquid biofuels as well. With an increasing share of renewables on the one hand side and a limited availability of biomass on the other hand, the provision of bioenergy has to consider the demands of the future energy system with high shares of fluctuating wind and solar power. This includes new and improved technologies and concepts for biogas, biomethane, and liquid and solid biofuels, which are discussed in the following, while for the electricity sector, the demand for more flexible provision might take place in the years to come; for more flexible heat provision, the transition is expected in a longer time frame. For their market implementation adopted regulatory framework and price signals from electricity markets are necessary. Review

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Enhancing flexibility of power systems by exploiting operational controllability of large‐scale wind farms

Liu

Wei

et al. 2017

IEEJ Transactions Elec Engng

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Even though increasing wind power generation significantly benefits the greening of power system generation, the intrinsic uncertainty and variability associated with large-scale wind generation greatly challenge the current power system operation, such as unit commitment (UC) and economic dispatch. So far, major wind farms are straightforwardly integrated into the existing UC framework as negative loads and operated with a wind-in-priority mode. With the prompt development of the control techniques of wind generators, such as switching on/off or fast pitching control, this manner of operation may underestimate the controllability of wind farms and result in the lack of operational flexibility of the power system. This paper addresses the issue by exploiting the controllability of wind farms in UC decision while considering its inherent uncertain nature. First, the wind generation controllability is modeled as an adjustable scenario set associated with prediction errors. And then a modified twostage stochastic UC model is formulated to incorporate the operational controllability of wind farms. A modified IEEE 39-bus system is employed to demonstrate the proposed methodology. Simulation results show that the utilization of wind generation controllability can considerably benefit the economy, reliability, and flexibility of power system dispatch. Yunhe Hou (Non-member) received the B.Sc. and Ph.D. degrees in electrical engineering from Huazhong University of Science and Technology, Wuhan, China, in 1999 and 2005, respectively. He is currently an Assistant Professor with the Department of Electrical and Electronic Engineering, The University of Hong Kong. His research interests include power system analysis, self-healing smart grid construction, and integration of renewable energy resources. Shengwei Mei (Non-member) received the B.Sc. degree in mathematics from Xinjiang University, Urumqi, China, the M.Sc. degree in operations research from Tsinghua University (THU), Beijing, China, and the Ph.D. degree in automatic control from the Chinese Academy of Sciences, Beijing, in 1984Beijing, in , 1989Beijing, in , and 1996. He is currently a Professor with THU. His research interests include power system analysis and control and game theory and its application in power systems.

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Renewable Curtailment as a Power System Flexibility Resource

Cited by 35 publications

References 0 publications

Wind power and photovoltaic power: How to improve the accommodation capability of renewable electricity generation in China?

Wind power and photovoltaic power: How to improve the accommodation capability of renewable electricity generation in China?

Flexible bioenergy supply for balancing fluctuating renewables in the heat and power sector—a review of technologies and concepts

Enhancing flexibility of power systems by exploiting operational controllability of large‐scale wind farms

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