A real-time simulation method of substation based on model segmentation method

Abstract

The invention discloses a transformer substation real-time simulation method based on a model segmentation method. The method comprises the following steps: step 1, c An ideal transformer model (ITM)method is adopted on a main transformer to divide a hub transformer substation model into subsystems with the same scale, and electromagnetic transient real-time simulation of a transformer substationis achieved under the condition that internal switches and nonlinear elements of the transformer substation are not processed. 2, the star-shaped equivalent circuit of the three-winding transformer is converted into a triangular equivalent circuit, and model segmentation is performed on the triangular equivalent circuit by adopting an ITM method, Therefore, one-to-one transmission of voltage andcurrent is realized. Step 3, aiming at the numerical stability problem generated after model segmentation of the hub transformer substation, waveform distortion is eliminated by adopting a hybrid integration method; The technical problems that real-time processing of a simulator is difficult and the balance of a segmentation model and the stability of numerical values are difficult to guarantee due to a hub transformer substation are solved.

Description

technical field [0001] The invention relates to the technical field of intelligent substations and equipment thereof, in particular to a real-time simulation method suitable for substations. Background technique [0002] With the rapid development of substations, the simulation modeling technology of substations is becoming more and more mature. The substation simulation system has covered the planning, design, operation, protection and training of substation operators. At the same time, the modern monitoring system and The emergence of new transformers, circuit breakers, intelligent electronic devices and other devices has not only affected the construction and implementation of substations, but also caused major changes in the testing methods of substations. [0003] In developed societies, both industrial users and residential users have higher and higher requirements for power supply reliability, which makes the real-time requirements of smart substations more stringent....

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Problems solved by technology

[0005] The purpose of the present invention is to provide a real-time simulation method for substations based on the model segmentation method to achieve the purpose of decoupling the original overall model, reducing the order and shortening the calculation time, so as to solve the real-time processing brought by the hub substation to the simulator Difficult and difficult to ensure the balance of the segmentation model and the stability of numerical values ​​and other technical issues

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