基于不同种类储能电池的微电网综合储能系统性能对比

Performance Comparison of Microgrid Integrated Energy Storage System Based on Different Kinds of Batteries

储能系统是保证微电网正常运行的关键,综合储能系统是微电网中储能应用的重要方式。本文将由电池储能与氢储能共同构成的综合储能系统应用在光伏微电网中,实现了电能、氢能、光能的多能互补。本文首先为微电网设计了一套经济可行的调度方案,该调度方案包含日前调度和实时调度两部分,根据不同的天气情况采取不同的调度原则。接着,本文分别计算了包含铅炭电池、磷酸铁锂电池和液态金属电池的微电网综合储能系统的全寿命周期成本,从而确定最佳的电池种类。对于本文所研究的综合储能系统而言,目前磷酸铁锂电池是系统全寿命周期成本最低的电池,而液态金属电池有可能成为该系统未来的一种新选择。

Energy storage system is the key to ensure the normal operation of microgridand the integrated energy storage system is an important mode of energy storage application. In this paper, the integrated energy storage system consisting of battery energy storage and hydrogen energy storage is applied to the photovoltaic microgrid to achievethe multi-energy complement of electric energy, hydrogen energy and solar energy. Firstly, a set of economical and feasible dispatching proposal is designed for the microgrid, which such two parts as present scheduling and real time scheduling the different dispatching principles are used in accordance with different weather condition. Then, the whole life cycle cost of the integrated energy storage system of the microgrid containing lead-carbon battery, LiFePO4 battery and liquid metal battery is calculated respectively so to determine the best kind of battery. For the integrated energy system studied in this paper, the LiFePO4 battery is the one with the lowest whole life cycle cost at present, whilethe liquid metal battery may become into a kind of new choice for the system in the future.