Extinction angle start control simulation device

Abstract

The invention provides an extinction angle start control simulation device, belongs to the field of electrical measurement, and particularly relates to the extinction angle start control simulation device which is used for simulation study of a direct current control and protection system of high-voltage direct current power transmission equipment. The extinction angle start control simulation device comprises a first speed limiting device, a first arithmetic operation element, a second arithmetic operation element, a first Schmitt trigger, a first timer, a second timer, a first phase inverter, a second phase inverter, a conjunction gate, a joint gate and a SR trigger. The first speed limiting device is connected to the first Schmitt trigger through the first arithmetic operation element and the second arithmetic operation element. The first Schmitt trigger is connected to the conjunction gate through the first timer, and the conjunction gate is connected to the S input end of the SR trigger. The first Schmitt trigger is connected to the joint gate through the second phase inverter and the second timer, and the joint gate is connected to the R input end of the SR trigger. According to the extinction angle starting control simulation device, the operating state of a direct current control protection device can be truly simulated and reflected, and corresponding simulation results can be provided for the study or the 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 an arc-extinguishing angle starting control 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 in...

AI Technical Summary

Problems solved by technology

However, the simulation model does not involve the simulation of the arc-cutting angle start control, and cannot truly simulate the running state of the arc-cutting angle start-up control of the HVDC DC control protection system

Images