分布式电源并网继电保护自适应整定方法研究

Research on Adaptive Setting Method of Relay Protection for Grid Connected Distributed Generation

为准确检测并切除故障,文章深入研究分布式电源并网条件下的继电保护自适应整定方法。首先,分析分布式电源并网接入对配电网继电保护的影响,评估并调整保护装置之间的配合关系;其次,设计分布式电源并网条件下的继电保护方案,能够在发生故障时快速、高效地完成继电保护动作;最后,实现继电保护的自适应整定。实验结果表明,文章提出的自适应整定方法能够快速、准确地检测并切除故障,根据电网的变化动态调整保护装置的整定值,显著提高保护装置的性能。

In order to accurately detect and cut off faults,this paper deeply studies the adaptive setting method of relay protection under the condition of grid connection of distributed power supply.Firstly,the influence of gridconnected distributed power supply on distribution network relay protection is analyzed,and the coordination relationship between protection devices is evaluated and adjusted.Secondly,a relay protection scheme under the condition of grid connection of distributed power supply is designed,which can quickly and efficiently complete the relay protection action when a fault occurs;Finally,the adaptive setting of relay protection is realized.The experimental results show that the adaptive setting method proposed in this paper can detect and cut off faults quickly and accurately,and dynamically adjust the setting value of the protection device according to the changes of the power grid,which significantly improves the performance of the protection device.