Quick Start Method and Device for Electromagnetic Transient Simulation of AC/DC Hybrid System

Abstract

The embodiment of the invention provides a method and a device for rapidly starting the electromagnetic transient simulation of an alternating and direct current hybrid system. The method comprises the following steps: obtaining a tide fracture surface; from the tide fracture surface, starting the electromagnetic transient simulation of the target alternating and direct current hybrid system, wherein the tide fracture surface is generated by carrying out climbing starting control on the target alternating and direct current hybrid system based on a tide calculation result of the target alternating and direct current hybrid system. By using the tide fracture surface provided by the tide calculation result of a large-scale system and setting the starting mode switching of a synchronous machine, rapid starting to a steady state for the electromagnetic transient simulation of the target alternating and direct current hybrid system can be realized, the calculation resources can be utilizedmore reasonably, and the simulation calculation efficiency is improved effectively.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of electric power system control, and more specifically, relate to a method and device for quick start-up of electromagnetic transient simulation of an AC / DC hybrid system. Background technique [0002] For the research of AC / DC hybrid system, a key link is to model and simulate it. In order to achieve this goal, many existing simulation platforms such as CloudPSS, PSCAD, and BPA can be used for modeling AC / DC hybrid systems, and electromagnetic transient models can be obtained, but the start-up problem of AC / DC hybrid system models , has not been fully resolved. [0003] Currently, there is no typical start-up strategy for the electromagnetic transient model of the AC / DC hybrid system. However, when starting the AC / DC hybrid system using the traditional synchronous machine ramp (Ramp), due to the multi-dimensional coupling of the DC system and the AC system in the large-scale AC / DC h...

AI Technical Summary

Problems solved by technology

In order to achieve this goal, many existing simulation platforms such as CloudPSS, PSCAD, and BPA can be used for modeling AC / DC hybrid systems, and electromagnetic transient models can be obtained, but the start-up problem of AC / DC hybrid system models , has not been fully resolved

[0003] At present, there is no typical start-up strategy for the electromagnetic transient model of the AC-DC hybrid system

However, when starting the AC / DC hybrid system using the traditional synchronous machine ramp (Ramp), due to the multi-dimensional coupling of the DC system and the AC system in the large-scale AC / DC hybrid system, the system structure and equipment types are becoming more and more complex, and a large amount of power The connection of electronic devices and devices has caused various power quality problems and transient stability problems, and the steady-state characteristics and transient characteristics of the AC system and the DC system affect each other, so that the conventional synchronous generator starting method cannot meet the requirements of AC The requirements of the DC hybrid system, especially when establishing a full electromagnetic transient simulation model, it is very likely that the start-up phase will take too long or even fail to enter the steady-state operation, which will greatly affect the calculation resources and time costs of the simulation. big waste

Images