Impacts of wind and solar spatial diversification on its market value: A case study of the Chilean electricity market
Impacts of wind and solar spatial diversification on its market value: A case study of the Chilean electricity market
复制标题
风能和太阳能空间多样化对其市场价值的影响：以智利电力市场为例
DOI：
10.1016/j.rser.2019.01.015
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发表时间：
2019
影响因子：
15.9
通讯作者：
D. Watts
中科院分区：
文献类型：
--
作者：
Rodrigo Pérez Odeh;D. Watts
可再生能源预计将在未来几十年成为世界主要电力来源，其中太阳能和风能在能源供应中占据很大份额。尽管可再生能源技术取得了显着进步，但由于太阳能和风能资源的高度可变性和有限的可预测性，对监管机构、市场设计者和系统运营商来说，它们的整合仍然很困难。可以采取措施促进它们的一体化，其中包括地域多元化。关于太阳能和风能资源多样化的文献有很多，并且有一个共同的结论：更大的分散性可以平滑电力生产。然而，关于空间多元化对电力系统、电价和可再生能源市场价值影响的文献却少之又少。本文研究了空间多样化的影响，并质疑一体化政策是否会激励将可再生发电机安置在为智利电力系统提供最高价值的地方。使用真实数据和简化的调度模型，分析显示了多元化对智利风能和太阳能市场价值影响的证据。结果表明，空间多样化对可再生能源的市场价值具有强烈的积极影响，特别是在主动输电和水力储存限制的情况下。风电市场价值可能会根据多样化程度以及系统的时空限制而变化最多 10 美元/兆瓦时，考虑到当前水库的存储容量，如果输电能力足够，太阳能市场价值可能会因多样化而增加 5 美元/兆瓦时。尽管必须谨慎观察这些结果，因为它们取决于所做的假设，但监管机构应该观察可再生能源空间多样化的重要影响。
Renewable energy is expected to become the main electricity source in the world in the coming decades, with solar and wind power taking a big share of the energy supply. Although there has been a remarkable advance on renewable energy technologies, their integration is still difficult for regulators, market designers and system operators due to the high variability and limited predictability of solar and wind resources. Measures can be adopted to ease their integration, among them geographical diversification. There is plenty of literature about the diversification of solar and wind resources and there is a common conclusion: greater dispersion smooths out power production. However, literature on the effects of spatial diversification on the power system, electricity prices and renewable energy market value is much scarcer. This paper studies the effects of spatial diversification and questions whether integration policies are incentivizing the placement of renewable generators where they provide the highest value to the electricity system in Chile. Using real data and a simplified dispatch model the analysis presented shows evidence of the effects of diversification on wind and solar market value in Chile. Results suggest that spatial diversification has a strong positive effect on the market value of renewable energy, especially in scenarios with active transmission and hydro-storage constraints. Wind market value may vary up to US$10/MW h depending on the level of diversification and the spatial and temporal constraints of the system and, given current storage capacity of hydro reservoirs, the solar market value may increase US$5/MW h due to diversification if transmission capacity is enough. Even though these results must be observed with caution, because they depend on the assumptions made, there is an important effect of renewable spatial diversification that should be observed by regulators.