Power system transient stability prevention and emergency coordination control auxiliary decision-making method

Abstract

The invention discloses a power system transient stability prevention and emergency coordination control auxiliary decision-making method, and relates to the technical field of power system automation, and the method comprises the steps: obtaining the real-time operation condition of a power grid, and pre-judging the transient stability of the real-time operation condition of the power grid through a trained Bayesian deep neural network model, wherein the operation condition comprises power grid operation topological structure information and a day-ahead unit; establishing transient stability constraints by the trained Bayesian deep neural network model, combining the transient stability constraints with power grid quasi-steady-state scheduling operation constraints, and establishing a power system transient stability prevention and emergency coordination control decision model; and iterating the power system transient stability prevention and emergency coordination control decision model through a Bayesian optimization algorithm based on a Gaussian process agent model to generate a power system transient stability prevention and emergency coordination control strategy. The method can monitor the dynamic safety state of the power grid in real time, and effectively improves the operation safety level of a power system.

Description

technical field [0001] The invention relates to the technical field of power system automation, in particular to an auxiliary decision-making method for power system transient stability prevention and emergency coordination control. Background technique [0002] The two factors of the continuously growing demand for power load and the relatively lagging power grid upgrade and expansion construction have caused the decline in the safety and stability margin of the power grid operation, and the system operating point is getting closer and closer to the stability limit. In order to prevent large-scale power outages caused by transient instability, effective online evaluation of power system transient stability and control-aided decision-making methods are urgently needed. Most prior art methods consider preventive control and emergency control strategies separately. However, preventive control and emergency control are important components of the "three lines of defense" of th...

AI Technical Summary

Problems solved by technology

The use of preventive control alone is likely to cause too high control costs for grid operation; the use of emergency control alone may increase the risk of grid instability, and if the control strategy is improper, there may be "negative effects" and secondary shocks, which is not conducive to the restoration of system stability

In addition, the traditional transient stability evaluation and control decision-making method is a model-driven time-domain simulation method, which is difficult to meet the needs of online transient stability monitoring and instability prevention and control decision-making.

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