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IntroductionWith the increasing penetration of renewable energy, renewable energy is becoming more and more difficult to deal with the challenges of network consolidation, energy consumption, the existence of grid-connected, low energy efficiency of long-distance transmission, high loss, low utilization of equipment, poor system capacity investment marginal efficiency and so on. Under normal circumstances, renewable energy microgrid run with large power grid. When a large grid failure is detected, it will separate from the big power grid timely and began to run independently [1]. Whether the renewable energy microgrid is running with large power grid or running independently. It is important to control the distributed power and energy storage equipment to ensure system stability. Therefore, we need real-time monitoring of photovoltaic arrays, wind turbines, batteries, inverters, controllers and other equipment timely to ensure timely, accurate, all-round reflect the operation of independent power supply network.[2] Wireless sensor network combine sensor technology, embedded computing technology, distributed information processing technology and communication technology. It can perceive and collect the information of the monitored object collaboratively, and then And then transmit within the area and upload to the background management system. Therefore,wireless sensor network is widely used in national defense and military, environmental monitoring, urban management, health care, industrial control, anti-terrorism and many other areas. As the wireless sensor network has the characteristics of no center self-organization, dynamic network topology, multi-hop routing, limited energy and bandwidth,large network size and the nodes use the same transmit power, multi-hop relay communication and many-to-one traffic, so that the traffic distribution in the whole network is seriously
