A New Kind Of Fast Simulation Model for AC-DC Hybrid Power Grid

With the continuous operation of uhv AC-DC project in China, the system appears the problem of "strong direct current and weak direct current". With the increasingly significant influence between AC-DC and multi-DC, the power grid operation is accelerated rapidly, and higher requirements are proposed for the scale, accuracy and speed of power grid simulation. Through the use of power system modeling, multi-time scale simulation, digitalanalog hybrid real-time simulation and other three aspects to summarize the status of simulation technology, and through the development of AC and DC power grid needs to analyze. It is pointed out that improving the modeling accuracy of complex models such as DC, new energy, FLEXIBLE AC transmission system and load, enlarging the electromagnetic transient simulation scale and improving the simulation efficiency of large-scale power grid will be the research emphases of improving the simulation capability of large-scale power grid. (paper)