Rapid bidirectional power flow of supercapacitor energy storage systems through grid-tied inverters for improved renewables integration
Rapid bidirectional power flow of supercapacitor energy storage systems through grid-tied inverters for improved renewables integration
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通过并网逆变器实现超级电容器储能系统的快速双向功率流，以改善可再生能源整合
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发表时间：
2013
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通讯作者：
A. Yokochi
中科院分区：
文献类型：
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作者：
Arne Bostrom;A. von Jouanne;T. Brekken;A. Yokochi
可再生能源的可变产出带来了整合挑战，特别是在高渗透水平上。多个储能解决方案的协调可以提供一种有效的方法来整合这些可变资源。由于超级电容器储能系统（SESS）的设计，以满足快速响应的能量需求，检查的影响，电力潮流逆转的频率对系统的操作是至关重要的，因为是合适的SESS控制算法的发展。本文介绍了实验和建模工作进行了使用SESS集成在一个研究规模的实验室电网通过高频并网逆变器。SESS在高频下的运行表现不佳，当功率流反转速度超过0.3Hz时，有效SESS能量额定值显著降低。两种方法来控制功率流从SESS的开发和测试，一个旨在功率平滑和其他旨在限制斜坡率。两者都有效地减少了系统在斜坡故障状态下花费的时间，其中斜坡率算法在减少斜坡故障状态下花费的时间方面最有效。
The variable output of renewables presents integration challenges, especially at high levels of penetration. The coordination of multiple energy storage solutions can provide an effective approach to integrate these variable resources. Since supercapacitor energy storage systems (SESS) are designed to meet fast response energy demands, examination of the effect of frequency of power flow reversal on system operation is crucial, as is development of suitable SESS control algorithms. This paper presents experimental and modeling work carried out using a SESS integrated in a research scale lab grid through a high frequency grid-tied inverter. Operation of the SESS at high frequencies shows poor performance, with effective SESS energy rating significantly decreased for power flow reversals faster than 0.3Hz. Two approaches to control power flow from a SESS are developed and tested, with one aimed at power smoothing and the other aimed at limiting ramp rates. Both effectively reduce the time the system spends in a ramp failure, with the ramp rate algorithm most effective at reducing the time spent in a ramp failure state.