微电网恢复过程中自适应保护系统的实现与动态验证

M. Valov, M. Nuschke
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引用次数: 1

摘要

在过去的几年里,人们越来越关注微电网的运行,认为它有可能在电力系统崩溃的情况下增加恢复力。微电网被认为适合支持减少停电时间和系统恢复策略。然而,孤岛电网的恢复和运行过程也带来了一些挑战,如短路电流水平的降低。因此,本文的重点是解决示例性微电网中保护系统行为的挑战,为所使用的智能电子设备集成自适应整定控制,并通过短路分析验证性能。在DIgSILENT/PowerFactory中进行了静态分析,在MATLAB/Simulink中进行了动态分析。动态研究是必要的,因为逆变器的行为会影响故障时保护装置的动作,并且有利于考虑故障后的操作。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Implementation and Dynamic Validation of an Adaptive Protection System during Microgrid Restoration
Over the last years more attention has been turned towards microgrid operation as a possibility to increase resilience in the context of power system collapse. Microgrids are considered suitable to support the reduction of outage times and system restoration strategies. However, the restoration and operation process of island grids brings out several challenges, for example decreased short-circuit current level. Therefore, the focus of this paper is to address the challenge of the protection system’s behavior within an exemplary microgrid, to integrate adaptive setting control for employed intelligent electronic devices, and to validate the performance with a short-circuit analysis. The short-circuit analysis has been performed statically in DIgSILENT/PowerFactory and dynamically in MATLAB/Simulink. The dynamic study was found to be necessary due to the behavior of inverters influencing the actions of protection devices during faults and to be beneficial for considering post-fault operation.
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