Evaluation of the Impact of High-Bandwidth Energy-Storage Systems on DC Protection
Evaluation of the Impact of High-Bandwidth Energy-Storage Systems on DC Protection
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DOI：
10.1109/tpwrd.2015.2470559
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发表时间：
2016-04
影响因子：
4.4
通讯作者：
P. Rakhra;P. Norman;S. Fletcher;S. Galloway;G. Burt
中科院分区：
文献类型：
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作者：
P. Rakhra;P. Norman;S. Fletcher;S. Galloway;G. Burt
将高带宽储能系统（ESS）集成到紧凑型直流电力系统中可以提高网络的运行能力和整体灵活性。然而，ESS 对现有直流保护系统性能的影响尚不清楚。本文确定了 ESS 的关键特性，这些特性决定了网络上反应较慢的发电机系统的保护致盲效应的程度。它表明，超过评估的临界水平的较高故障阻抗将抑制反应较慢的发电机系统的响应，从而降低相应的过流保护操作的速度。本文论证了现有保护解决方案的局限性，并确定了更合适的保护方法来消除/最小化保护致盲的影响。
The integration of high bandwidth energy-storage systems (ESS) in compact dc electrical power systems can increase the operational capability and overall flexibility of the network. However, the impact of ESSs on the performance of existing dc protection systems is not well understood. This paper identifies the key characteristics of the ESS that determine the extent of the protection blinding effects on slower acting generator systems on the network. It shows that higher fault impedances beyond that of an evaluated critical level will dampen the response of slower-acting generator systems, decreasing the speed of corresponding overcurrent protection operation. The paper demonstrates the limitations of existing protection solutions and identifies more suitable protection approaches to remove/minimize the effects of protection blinding.