Electric power system state determination method and device, computer medium and storage medium

Abstract

The invention is applicable to the technical field of computers, and particularly relates to an electric power system state determination method and device, a computer medium and a storage medium. Theelectric power system state determination method comprises the steps of obtaining system measurement data, system topology network information and a node admittance matrix and establishing an electric power system state estimation model; processing the system state quantity equation according to a set membership filtering algorithm, and establishing a time updating ellipsoid; processing the system quantity measurement equation according to an adaptive algorithm; and determining measurement update ellipsoids. According to the power system state determination method provided by the embodiment of the invention, state estimation is carried out on a system state quantity equation through a set membership filtering algorithm; combined with the adaptive algorithm program, the electric power system state determination method can better adapt to the non-Gaussian noise distribution; the method is advantaged in that the adaptive algorithm is utilized to process the system quantity measurement equation, the data processing sequence in the system quantity measurement equation can be adjusted, measurement data redundancy is fully utilized, and numerical precision is further improved.

Description

technical field [0001] The invention belongs to the technical field of computers, and in particular relates to a method, a device, a computer medium and a storage medium for determining the state of a power system. Background technique [0002] With the rapid development of the power system, the structure of the power grid is becoming more and more complex, and the safe and stable operation of the system is facing great challenges. It is necessary to obtain real-time, accurate and comprehensive system operation status to ensure that operators can make reasonable decisions based on these status information. At present, it is difficult to directly measure all power system state variables, and there are inevitably errors in direct measurement. Therefore, state estimation, which provides the best estimate of system state by processing redundant measurements, becomes an important part of power system monitoring and control. [0003] The existing system state estimation algorithm...

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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method for determining the state of a power system, which aims to solve the technical problem that existing system state estimation algorithms are difficult to use for online determination of the best estimated value of the system state

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