考虑微网系统建设成本和运行的灵活性、可靠性,对微网建设初期的接线方案进行了选择.研究了2种微源控制方法,基于微源的不同控制原理建立了微网系统仿真模型,针对计划孤网和非计划孤网中的下垂控制和混合控制进行了仿真分析.仿真结果验证了微网计划孤网的稳定性和孤网控制方法的有效性.任何控制方式下微网再并网时,均需对各微源出力进行重新调整,才能保证微网运行模式的平滑过渡.%With the construction cost, the operational flexibilily and reliability of the micro -grid considered. this paper presented an effective connection scheme of the micro-grid at the initial construction phase. The paper studied the two control methods for micro -sources. and established the simulation model of the micro -grid based on the different pnnciples to control the micro-grid. Simulation analysis was conducted on the droop control and mixed control for both planned isolated network and non-planned isolated network.The simulation results demonstrate the stability of micro-grid in the isolated state. and show the effectiveness of the control schemes. When the micro-grid is connected with the main grid under any control scheme, the output of the micro -source should be readjusted to ensure a smooth transition of the micro-grid operation mode.
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