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Coordination of power and natural gas markets via financial instruments

机译：通过金融工具协调电力和天然气市场

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摘要

Current electricity and natural gas markets operate with deterministic description of uncertain supply, and in a temporally and sectorally decoupled way. This practice in energy systems is being challenged by the increasing integration of stochastic renewable energy sources. There is a growing need for exchanging operational flexibility among energy sectors, which requires to improve the sectoral coordination between electricity and natural gas markets. In addition, the dispatch of flexible units in both sectors needs to be made in a more uncertainty-aware manner, requiring to strengthen the temporal coordination between day-ahead and real-time energy markets. We explore the use of existing financial instruments in the form of virtual bidding (VB) as a market-based solution to enhance both sectoral and temporal coordination in energy markets. It is established in the literature that VB by purely financial players is able to enhance the temporal coordination between deterministic day-ahead and real-time markets. By developing various stochastic equilibrium and optimization models, we show that VB by physical players, i.e., gas-fired power plants, at the interface of power and natural gas systems is of great potential to improve not only the temporal coordination between deterministic day-ahead and real-time markets, but also the sectoral coordination between deterministic electricity and natural gas markets. We exploit a fully stochastic co-optimization model as an ideal benchmark, and numerically illustrate the benefits of VB for increasing the overall market efficiency in terms of reduced expected operational cost of the entire energy system. We eventually show that flexible resources in both electricity and natural gas markets are dispatched more efficiently in the day-ahead stage when VB exists.
机译：目前的电力和天然气市场随着不确定供应的确定性描述，以及时间和境外分离方式。能源系统的这种做法受到随机可再生能源的越来越多的整合而受到挑战。越来越需要在能源领域交换运营灵活性，这需要提高电力和天然气市场之间的部门协调。此外，两个部门中的柔性单元的调度需要以更不确定性的感知方式进行，需要加强前方和实时能源市场之间的时间协调。我们探讨了以虚拟招标（VB）形式的现有金融工具为基于市场的解决方案，以提高能源市场的部门和时间协调。它在文献中建立了VB，纯粹的金融参与者能够提高确定性日期和实时市场之间的时间协调。通过开发各种随机均衡和优化模型，我们展示了电力和天然气系统界面的物理播放器，即燃气发电厂的VB，不仅可以改善确定性日期之间的时间协调和实时市场，也是确定性电力和天然气市场之间的部门协调。我们利用一个完全随机的协同优化模型作为理想的基准，并且在数值上说明了VB在整个能源系统的预期运营成本降低的过程中提高整体市场效率的好处。我们最终表明，当VB存在时，在前面的阶段，电力和天然气市场中的灵活资源在前一天的阶段被调度。

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