Establishment method and system of damping bus simulation calculation model

Abstract

The invention discloses an establishment method and system of a damping bus simulation calculation model. The method comprises: dividing an equivalent air-core coil of a damping bus into three left-middle-right local coils, enabling the air-core coil to be equivalent to local coils which are of a left end and a right end and are connected in the same phase, and calculating inductance values of thelocal coils of the left end and the right end; enabling the air-core coil to be equivalent to the left-middle-right local coils connected in the same phase, and calculating an inductance value of a middle local coil; and establishing the damping bus simulation model according to the above-mentioned inductance values. Further, a damping resistor is used to be in parallel with the equivalent air-core coil in the damping bus to improve performance of the damping bus. The system includes a human-machine interaction unit, a calculating unit and a modeling unit. The human-machine interaction unit is used to receive turn numbers which are of the left-middle-right local coils and are input by a user, and calculate the inductance values of all the local coils. The calculating unit is used to calculate the inductance values of all the local coils. The modeling unit is used to establish the damping bus simulation calculation model.

Description

technical field [0001] The invention relates to the field of high-voltage electrics, and more specifically, to a method and system for establishing a simulation calculation model of a damping busbar. Background technique [0002] Gas insulated switchgear (GIS) is more and more widely used in the fields of high voltage, extra high voltage and ultra high voltage due to its advantages of safe and reliable operation, flexible configuration, strong environmental adaptability, long maintenance cycle and convenient installation. In the equipment, the very fast transient overvoltage (VFTO) generated by the operation of the isolation switch will have an important impact on the safe operation of the GIS equipment, external connection equipment and secondary equipment, and with the increase of the voltage level, this This effect is becoming more and more significant, especially in UHV systems. This effect includes heavy breakdown between contacts and damage to inter-turn insulation; ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing modeling calculation method in the background technology obtains inaccurate parameters and cannot perform accurate modeling, the present invention provides a damping bus simulation calculation model establishment method and system; the method and system propose a damping The segmented modeling method of the busbar fully considers the mutual inductance between the windings, and can establish a more accurate damping busbar simulation calculation model; the method for establishing a damping busbar simulation calculation model includes:

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