Excitation Regulator Synchronous Voltage Detection Error Calibration Method, Device and Excitation System

Abstract

The invention relates to an excitation regulator synchronous voltage detection error calibration method and device and an excitation system. The excitation regulator synchronous voltage detection error calibration method comprises the steps that a reference pulse is synchronously transmitted to excitation regulators corresponding to parallel excitation power units; the phase difference returned bythe excitation regulators according to the reference pulse is received, and the phase difference is the difference between a phase of the reference pulse received by the excitation regulators and a phase of a synchronous voltage detected by the excitation regulators; the phase offset of the excitation regulators is determined according to the phase difference; and the phase offset is sent to thecorresponding excitation regulator, and the phase offset is used for calibrating the phase of the detected synchronous voltage by the excitation regulators. The excitation regulator synchronous voltage detection error calibration method and device and the excitation system can calibrate phase detection errors of the synchronous voltage, and the excitation system has high operational reliability.

Description

technical field [0001] The present application relates to the technical field of power electronics, in particular to a method, device and excitation system for calibrating synchronous voltage detection errors of an excitation regulator. Background technique [0002] The excitation system is an important part of the generator, which has a great influence on the safe and stable operation of the power system and the generator itself. The excitation system generally includes an excitation power unit and an excitation regulator. The excitation power unit supplies the excitation current to the rotor of the generator. The excitation regulator detects the phase of the input synchronous voltage, and controls the triggering of the excitation power unit in the excitation power unit based on a given adjustment criterion. SCR to control the output of the excitation power unit. [0003] At present, large and medium-sized excitation systems generally use multiple excitation power units to...

AI Technical Summary

Problems solved by technology

However, in the actual working process of the excitation system, the phase detection error of the excitation regulator to the synchronous voltage may be caused by factors such as device aging and environmental changes; and if the phase detection error of the synchronous voltage is large, it will cause the trigger angle between the excitation regulators different, resulting in low operating reliability of the excitation system

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