考虑电池参与电力市场的循环老化成本
Factoring the Cycle Aging Cost of Batteries Participating in Electricity Markets
摘要：
在参与电力市场时，电池储能系统的所有者必须以其收入至少覆盖其真实运营成本的方式进行投标。由于电池单元的循环老化代表了这一运营成本的很大一部分，因此在这些投标中必须考虑电池退化的成本。然而，现有的电池退化模型要么不适合市场清算软件，要么不反映实际的电池老化机制。在本文中，我们使用分段线性费用函数，一种方法，提供了一个密切的近似的电化学电池的循环老化机制，可以很容易地纳入现有的市场调度程序的电池循环老化模型。通过定义每个电池周期的边际老化成本，我们可以评估电池的实际运营盈利能力。案例研究表明，该模型的有效性，在最大限度地提高电池储能系统的运营利润参加ISO新英格兰能源和储备市场。
英文摘要：
When participating in electricity markets, owners of battery energy storage systems must bid in such a way that their revenues will at least cover their true cost of operation. Since cycle aging of battery cells represents a substantial part of this operating cost, the cost of battery degradation must be factored in these bids. However, existing models of battery degradation either do not fit market clearing software or do not reflect the actual battery aging mechanism. In this paper we model battery cycle aging using a piecewise linear cost function, an approach that provides a close approximation of the cycle aging mechanism of electrochemical batteries and can be incorporated easily into existing market dispatch programs. By defining the marginal aging cost of each battery cycle, we can assess the actual operating profitability of batteries. A case study demonstrates the effectiveness of the proposed model in maximizing the operating profit of a battery energy storage system taking part in the ISO New England energy and reserve markets.
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