摘要
风力发电输出功率的波动性导致其直接并网会对电网带来不良影响,需要电力储能装置来提高并网性能,而常用的单一电池储能由于受到充放电次数的限制而易损坏。在建立用于平滑风电功率波动的超导储能和电池储能的混合储能模型基础上,设计超导储能用于平抑高频尖峰功率,电池储能用于平抑低频波动功率,并给出了两种储能装置的功率和容量确定方法。算例的仿真结果表明该方法同单一电池储能相比,可以有效地平抑风场并网的功率波动并减小电池的功率等级,减少电池的充放电次数和放电深度,从而延长了电池使用寿命。
Wind power fluctuation would adversely impacts power systems. Integration of energy storage systems （ESS） into wind farms is a promising solution to manage wind power. Battery energy storage system （BESS） is commonly used but it is easily damaged limited by charging and discharging times. A hybrid energy storage system （HESS） combined with superconducting magnetic energy storage （SMES） and BESS was proposed to suppress wind power fluctuations. The SMES and BESS were designed to absorb high frequency power and low frequency power respectively. The rate power and energy capacities of SMES and BESS were discussed. The simulation results show that this method can stabilize the power fluctuations effectively. Meanwhile, the power degree of battery is reduced and the battery lifetime is lengthened compared with those in the single BESS case.
出处
《电源学报》
CSCD
2013年第1期25-29,共5页
Journal of Power Supply
