3) constant PQ model
恒定功率模型
1.
An important concern of the two types of HVDC models is that to what extent the calculation results are impacted by using the constant PQ model.
对大规模交直流输电系统进行低频振荡(LFO)分析时,直流系统通常采用恒定功率模型或准稳态模型来表示,对这2种不同的直流模型,需要考虑采用简化的恒定功率模型会对计算结果带来何种程度的影响。
2.
In the low frequency oscillation(LFO) analysis in an AC/DC interconnected system the part of HVDC links is usually described by a constant PQ model or a Quasi-Steady-State (QSS) model.
在一个交、直流互联的电力系统中,直流输电部分一般用恒定功率模型或准稳态线性化模型来描述。
4) unsteady friction model
非恒定摩阻模型
1.
This article introduces unsteady friction models that base the extra friction losses on the history of the weighted accelerations during the transient phenomena or on the instantaneous flow acceleration with a second group of models that assume that the wall shear stress due to the flow variations is proportional to the flow acceleration.
该文介绍在快速瞬变流数值模拟中应用最为广泛的两类非恒定摩阻模型:物理理论基础模型和准恒定流经验修正模型,前者以引入历史速度权函数为特点,后者考虑非恒定流加速度对摩阻项的影响。
5) unsteady flow model
不恒定流模型
1.
In this paper, a 1-D unsteady flow model and a quasi 2-D flow model for simulating flood flow for storage and detention basins are developed.
系统地研究了描述洪水在蓄滞洪区内演进过程的一维不恒定流模型和二维流模型，突出对河流与沿河堤外洼地间水流交换的描述和对淹没区各蓄水单元间水流交换的描述及河流与调蓄区水流连接的描述。
6) constant load impedance model
恒定阻抗负荷模型
补充资料：恒定
永恒固定。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条