Method for improving transient stability analysis efficiency of electric power system

Abstract

The invention discloses a method for improving a transient stability analysis efficiency of an electric power system and relates to the field of the electric power system. The method comprises the following steps of: initializing element parameters of the electric power system and inputting data of the electric power system; selecting a network topology state, a generator state and a load level of the electric power system, and determining an operation state of the electric power system; carrying out Monte Carlo sampling selection on the operation state of the electric power system to form a fault sampling sequence; utilizing a task distribution method facing to a multiprocessor parallel system and distributing the fault sampling sequence; carrying out transient stability analysis on a fault sample based on an energy function method by each processor; receiving a result returned by a processor by a main processor and storing the result into a database; and when the fault sampling sequence X is finished, calculating the possibility index of the transient stability of the electric power system and outputting the result. The method disclosed by the invention meets the requirements of instantaneity of information of the electric power system and improves the analysis efficiency and the safety of the electric power system.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a method for improving the efficiency of transient stability analysis of power systems. Specifically, it involves the strategy and implementation method of using transient energy function and Monte-Carlo method to improve the efficiency of transient stability analysis of large-scale power systems. Background technique [0002] Power system transient stability refers to whether the synchronous motors can continue to maintain synchronous operation after the system suddenly experiences a large disturbance. Commonly considered disturbances include the occurrence of various short-circuit faults, removal of large-capacity generators or transmission equipment, and sudden changes in certain loads. The power system is a multi-dimensional random system. Not only are the types and locations of faults suffered by the system random, but also the state of the system at the time of the fault, the ...

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Problems solved by technology

[0005] The existing transient stability analysis methods are complicated to implement in computer simulation of large-scale power systems. Although the accuracy is high, it is difficult to know in advance when the system simulation needs to restart the fault system simulation, and it usually takes a long time. Long time and low analysis efficiency [2] ; Make it impossible to detect the faults in the power system in time, reducing the security of the power system

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