随着电力电子渗透率的上升和短路容量的下降,高比例新能源电力系统的电网强度在逐渐降低,双高电力系统的安全、稳定运行面临重大挑战,因此,亟须提出合理的电网强度评估方法,以促进新能源的安全、高效消纳.基于此,首先,将新能源多场站短路比(Multiple Renewable Energy Stations Short-Circuit Ra-tio,MRSCR)作为电网强度量化指标,简要介绍了新能源多场站短路比;其次,基于蒙特卡洛模拟对MRSCR进行了概率评估;最后,通过New England 39节点系统验证了所提策略的有效性和正确性,可以为电力系统的规划及其安全、稳定运行提供参考.
Research on Probability Assessment Method of Multiple Renewable Energy Stations Short-Circuit Ratio Based on Monte Carlo
With the increase of power electronic permeability and the decrease of short-circuit capacity.The power grid strength of high-proportion new energy power system is gradually decreasing,and the safe and stable operation of double-high power system is facing great challenges.Therefore,it is urgent to propose a reasonable power grid strength evaluation method to promote the safe and efficient consumption of new energy.Based on this,this paper first takes Multiple Renewable Energy Stations Short-Circuit Ratio(MRSCR)as the quantitative index of power grid strength,and briefly introduces MRSCR.Then,based on Monte Carlo Simulation,the probability assessment of MRSCR is carried out.Finally,the effectiveness and correctness of the proposed strategy are verified by the New England 39 node system,which can provide reference for power system planning and safe and stable operation.
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