Open AccessResearch on the Operation Model and Strategy of Lithium Battery to Provide Frequency Regulation in the Power System
Author(s) -
Yu Shi,
Zhong Zhang,
Jing Wang,
Li Hao,
Xiang Zhao,
Xintong Yang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2108/1/012013
Subject(s) - frequency regulation , energy storage , battery (electricity) , revenue , lithium (medication) , electricity market , grid energy storage , computer science , electric power system , power (physics) , automotive engineering , environmental economics , electrical engineering , business , economics , electricity , engineering , finance , medicine , physics , quantum mechanics , endocrinology
With the development of smart grid and energy internet, energy storage will play an important role in maintaining the power balance and providing frequency regulation in future power system. Consequently, energy storage faces a trade-off problem between the energy market and frequency regulation market. In this work, an operation model and strategy of energy storage to provide frequency regulation is proposed. Taking lithium battery as an example of energy storage, its technical feasibility to provide frequency regulation is firstly discussed. Then, a day-ahead energy market model in the power system is constructed to calculate the revenue of lithium battery. Finally, the operation strategy of lithium battery to provide secondary frequency regulation (namely AGC) is proposed based on the model of opportunity cost. Case study is conducted on a modified IEEE 6-bus system. It shows that the reduced marginal revenue of lithium battery in the energy market increases with the growth of its declared capacity for frequency regulation. Consequently, the optimal declared frequency regulation capacity for lithium battery is the amount, at which the reduced marginal revenue in the energy market is equal to the compensation price of frequency regulation.