基于互近似熵的微电网并网同步检测方法

针对经典的微电网并网同步检测方法需同时比较两侧电压相位、 幅值和频率的繁琐过程，提出基于互近似熵的微电网并网同步检测方法。该方法只需利用单一的互近似熵值就能比较并网开关两侧电压的相似度。分析基于互近似熵的微电网并网同步检测方法的原理和优势，研究微电网并网同步检测方法中互近似熵参数取值等关键问题，进而具体介绍基于互近似熵的微电网并网同步检测方法的实现步骤。最后在Matlab中搭建微电网通过断路器并入配电网的简化模型，仿真微电网开关两侧电压相位、 幅值和频率变化时的互近似熵值。仿真结果证明了该方法的有效性。

Synchronization closing detection method of microgrid based on mutual approximate entropy

Classic synchronization closing detection method of microgrid needs the tedious process to simultaneously compare the voltage phase, amplitude and frequency on both sides. Synchronization closing detection method of microgrid based on mutual approximate entropy is proposed, which only needs the single value of mutual approximate entropy to compare the voltage similarity on both sides. The principle and advantage of synchronization detection closing method of microgrid based on mutual approximate entropy are analyzed. And the key issue such as the value setting of the method is studied. Then the implementation steps of the method is introduced in detail. Finally the simplified model of microgrid connecting to distribution network is constructed in Matlab, where the value of mutual approximate entropy is simulated on the change of voltage phase, amplitude and frequency. The simulation result verifies the effectiveness of the method.