Tapping point rise-and-fall instruction simulation device

Abstract

The invention provides a tapping point rise-and-fall instruction simulation device, belongs to the field of electrical measurement, and particularly relates to a testing device used for a simulation study of a direct current control protection system of high-voltage direct current transmission equipment. A neutral current signal is connected to a first proportional component through a first arithmetic operation component, and the neutral current signal is connected to a second proportional component through a second arithmetic operation component. The first arithmetic operation component is connected to a tapping point rising signal module through a first absolute value arithmetic unit. A voltage rising signal end of a voltage control module and an angle rising signal end of an angle control module are connected to the tapping point rising signal module. The second arithmetic operation component is connected with a tapping point falling signal module through a second absolute value arithmetic unit. A voltage falling signal end of the voltage control module and an angle falling signal end of the angle control module are connected with the tapping point falling signal module. The device can truly simulate and reflect the running state of a direct current protection device, and provide corresponding simulation results for the study or design of the direct current control protection device.

Description

technical field [0001] The invention belongs to the field of electrical measurement, and in particular relates to a tap position simulation test device used for simulation research of a DC control and protection system of high-voltage direct current transmission equipment. Background technique [0002] The ever-increasing demand for electricity has led to the development of power transmission systems in the direction of long distance, large capacity and high stability. As the construction projects of UHV AC transmission projects and HVDC transmission projects in various power grid regions continue to increase, the power grids in areas where power consumption is concentrated show obvious characteristics of UHV AC-DC hybrid receiving-end power grids with multi-DC feeds. The power grid structure is tight, and the electrical distance between multiple AC and DC lines is closer. After the UHV and EHV AC systems fail, it is easy to cause multiple DCs including high-voltage DCs to f...

AI Technical Summary

Problems solved by technology

However, the simulation model does not involve the simulation of the tap position, so it cannot truly simulate the tap position operation status of the HVDC DC control and protection system

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