Research The Effect Of Node Injection Power On The Cascading Overload Mode

With the development of new energy, the node injection power caused by new energygrid will increases the probability greatly to result in cascading overload. Therefore, it isbecoming a hot research topic to analyze the stability of the grid by node injection power.The research aim is to analyze the impact of node injection on the second cascadingoverload of grid. The main aspects and results are as follow: Firstly, the mechanism thatnode injection power affects branch power is studied after the initial failure of grid and weobtain the relationship between grid node injection power branch power. This is thefoundation of future research. Secondly, DC flow method are analyzed deeply and weobtained the power distribution after the branch is cut off. This provides a feasibilitymethod for future simulation. Thirdly, the effect of grid branch cascading overload underdifferent trend states is studied and we get the deterministic law. Fourthly, the impact ofnode injection power on branch cascading overload is studied based on the vulnerability ofgrid and the grid vulnerability branches of different trend states is found. Finally, theimpact of node injection random power on the stable operation of grid is analyzed and thedeterministic law is found. This provides the effective information to analyze the stabilityof grid with random injection power.Some regularities of the node injection power under grid cascading overload mode isconcluded. The effect of node power on grid cascading overload after branch breakingfailure is found. The vulnerability branch of grid is classified; analyzed the effect of nodeinjection power on stability operation of grid is analyzed. More comprehensive andeffective measures for the stability of grid operation is provided.