微电网的黑启动研究

Research on black-start for microgrid

为了提高微电网供电可靠性,提出一种针对全黑的孤立微电网的黑启动方案。结合微源特性及其控制方式,对微源的黑启动能力进行比较,确定了黑启动微源的选取原则,给出了黑启动过程中有黑启动能力和无黑启动能力微源的控制方式要求。分析了微电网黑启动的并行/串行网架恢复策略,指出应采用启动速度更快的并行恢复策略,并制定了详细的黑启动操作流程。利用Matlab/Simulink建立各微源控制模型以及微电网仿真模型,仿真结果验证了微电网黑启动方案及其操作流程的可行性。

In order to improve the reliability of microgrid power supply, this paper proposes a set of black-start scheme for the isolated microgrid. Based on the analysis of the characteristics and control of microsources, and the comparison of black-start capabilities of them, the selection principle of microsources in the process of black-start is established and the control requirements of them with and without black-start capabilities are expressed. Moreover, this paper analyzes the serial and parallel restoration strategy of the microgrid black-start and presents that the parallel strategy with high speed is more appropriate for the process. At the same time, the detailed operation procedure of black-start is formulated. The control models of microsources and the simulation model of microgrid are built with Matlab/Simulink, and the simulation results verify the feasibility of the microgrid black-start scheme and the operation procedure.