A General-Order System Frequency Response Model Incorporating Load Shedding: Analytic Modeling and Applications

2006 ◽  
Vol 21 (2) ◽  
pp. 709-717 ◽  
Author(s):  
D.L.H. Aik
Keyword(s):  
Frequency Response ◽  
Load Shedding ◽  
Order System ◽  
Response Model ◽  
Analytic Modeling ◽  
General Order ◽  
System Frequency

A low-order system frequency response model

1990 ◽  
Vol 5 (3) ◽  
pp. 720-729 ◽  
Author(s):  
P.M. Anderson ◽  
M. Mirheydar
Keyword(s):  
Frequency Response ◽  
Order System ◽  
Response Model ◽  
System Frequency ◽  
Low Order

Low-Order Frequency Response Model in the Application of Frequency Control

2012 ◽  
Vol 518-523 ◽  
pp. 3820-3825
Author(s):  
Gao Zheng
Keyword(s):  
Power System ◽  
Frequency Response ◽  
Time Constant ◽  
Frequency Control ◽  
Accurate Method ◽  
Order System ◽  
Response Model ◽  
Large Power ◽  
System Frequency ◽  
Low Order

This paper introduces a low-order system frequency response model (SFR). SFR model is simplified from other models, which can be used to estimate the frequency response of a large power system, or sudden load disturbance of the island.SFR model is based on the neglecting nonlinear power system of u the units equation, which is controlled by the steam turbine generator . This means that the generator inertia and reheat time constant make system average frequency response. In addition, because of the two time constant , the resulting frequency response can be calculated in the closed loop form, which provides a simple and accurate method to estimate the essential characteristics of the system frequency response.

The Influence of Motor Low Voltage Trip on under-Frequency Load Shedding in the Electric Network of Refinery Enterprise

2013 ◽  
Vol 732-733 ◽  
pp. 1119-1124
Author(s):  
Tian Zhen Han ◽  
Qi Yang ◽  
Yun Ting Song ◽  
Xiao Jun Tang ◽  
Qing Kui Guo ◽  
...  
Keyword(s):  
Frequency Response ◽  
Low Voltage ◽  
Low Frequency ◽  
Load Shedding ◽  
Response Model ◽  
Electric Network ◽  
The Impact

A simple frequency response model is generally used in UFLS (under-frequency load shedding) design, without considering the impact of voltage on the frequency. In fact, in the case of large active and reactive shortage power, the system will suffer from the low voltage problem by the emergence of low frequency, which easily leads a large number of motors tripping due to low voltage protection trip in the UFLS process. The influence on UFLS is compared and problems needed to solve are put forward.

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