A simplified Jacobian matrix based fast continuous power flow calculation method considering capacity of frequency modulation units

Deep integration of distributed energy brings great uncertainty into distribution network. Therefore, fast continuous power flow calculation plays a vital role in helping distribution networks respond to system instability caused by dramatic changes in network power flow. This paper proposes a continuous power flow calculation method based on simplified Jacobian matrix, considering the capacity of frequency modulation(FM) units in the actual operation process, which provides a timely reference for the safe operation of the system and the unbalanced power distribution. The results of case study indicate the accuracy and efficiency of the proposed method from the perspective of power system stable operation.