一种甩负荷判断装置在调速器控制中的应用

Application of a load rejection judging device in governor control

在水电站运行中,甩负荷是对发电机组安全运行造成较大影响的一个暂态过程。尤其当甩负荷发生在电网端时,调速器反应滞后,可能导致水轮发电机组过速而紧急停机。本文详细介绍了一种电网甩负荷智能判断装置在水电站中的应用,通过分析发电机定子电流和频率的变化,快速准确地判断出电网甩负荷,并开出给调速器,确保能将水轮发电机组安全地由大网运行状态转到孤网运行状态。

In the operation of a hydropower station,load rejection is a transient process that greatly affects the safe operation of the generating set.Especially when the load rejection occurs on the grid side,the governor's response would lag,which may cause the hydro-generator unit to overspeed and stop emergency.This article introduced in detail about the application of a power grid load dump intelligent judgment device in hydropower stations.By analyzing the changes in generator stator current and frequency,it can quickly and accurately determine the power grid load dump and send it to the governor to ensure that the water can be removed.To make sure that the generator set is safely transferred from the operating state of the large grid to the operating state of the isolated grid.