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With the integration of more microgrids in distribution networks, its optimal autonomous operation becomes more important to reduce its operating cost and its influence on the main grid. This paper proposes a bi-layer multi-time coordination method for optimal generation and reserve schedule and dispatch of a grid-connected microgrid to reduce the impact of uncertainties of renewable sources, loads, and random component failures on power balance, operating costs, and system reliability. The reserve is refined into positive and negative reserves related to power shortage and power surplus. In the days ahead schedule layer, generating units are committed, and relaxed bidirectional reserve boundaries are predicted for the next day. In the real-time dispatch layer, generation output is dynamically adjusted and the reserve is dispatched using a successive approximation based on real-time data. A test microgrid is analyzed to illustrate the effectiveness of the proposed approach.

Internet of things (IOT) has caused great concern since its inception and it is considered as the second wave of the information industry after computer, internet and mobile communication network. Because IOT contains variety kinds of device, it becomes a typical heterogeneous network and it is very difficult to design a communication layer which satisfy the requirements such as dynamic,loose coupling,robustness,versatility,flexibility at the same time.To Solve that problem, a generic SOC based IOT communication middleware has been presented in this paper.The middleware combines both advantages of SOA and MAS in order to convert IOT's heterogeneous network into a homogeneous network.The performance test reveals that the middleware can service about 60 requests persecond which is good enough for general IOT applications.

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