This work investigates the technical and financial performance of deeply decarbonised wholesale electricity markets with uncertain variable renewable generation (VRG), uncertain demand and different types of flexibility. It first finds that different combinations of power reserves (i.e. power generation capacity) and energy reserves (i.e. energy storage capacity), can achieve adequate system reliability at similar total costs. However, use of only energy reserves never achieved adequate system reliability, and this looks to be a fundamental challenge to the reliability of systems with only energy reserves but no power reserves. Two independent aspects of wholesale market operations are then found to be the main determinants of system reliability: the length of the unit commitment (UC) schedule prior to dispatch and the degree of operational uncertainty of VRG during dispatch.

中文翻译：

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具有重要储能和灵活性的可再生能源丰富的电力批发市场的表现


这项工作调查了深度脱碳批发电力市场的技术和财务表现，这些市场具有不确定的可变可再生能源发电 （VRG）、不确定的需求和不同类型的灵活性。它首先发现，电力储备（即发电容量）和能源储备（即储能容量）的不同组合可以在相似的总成本下实现足够的系统可靠性。然而，仅使用能量储备从未实现足够的系统可靠性，这似乎是对只有能量储备而没有功率储备的系统可靠性的根本挑战。然后发现批发市场运营的两个独立方面是系统可靠性的主要决定因素：发货前的单位承诺 （UC） 时间表的长度和发货期间 VRG 的运营不确定性程度。