Mircogrid Voltage Risk Evaluation Using Distributed Parallel Monte-Carlo Simulation

The stochastic characteristics of distributed generators (DG) and loads may cause unwanted voltage fluctuation in microgrid. Traditional voltage analysis methods lack the ability to deal with this new situation. Based on the analysis of the stochastic characteristics, the random models of DGs and loads were established. By modifying the Newton-Raphson method, a stochastic power flow algorithm based on Monte-Carlo simulation was purposed to evaluate voltage risks. To accelerate the computation, a distributed parallel Monte-Carlo simulation method based on Spark MapReduce was purposed. A test platform was set up to tested the algorithm with a calculation example, which proves the effectiveness and superiority of the purposed method.