Strategies for handling UPFC constraints in steady-state power flow and voltage control

2000 ◽  
Vol 15 (2) ◽  
pp. 566-571 ◽  
Author(s):  
Jun-Yong Liu ◽  
Yong-Hua Song ◽  
P.A. Mehta
Keyword(s):  
Steady State ◽  
Power Flow ◽  
State Power ◽  
Voltage Control

scholarly journals Analysis of Unified Power Flow Controller Steady-State Power Flow Regulation Capability and Its Key Factors

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4419
Author(s):  
Jian Yang ◽  
Zheng Xu ◽  
Zheren Zhang
Keyword(s):  
Steady State ◽  
Power Flow ◽  
Estimation Method ◽  
State Power ◽  
Flow Regulation ◽  
Unified Power Flow Controller ◽  
Key Factors ◽  
Systems Research ◽  
Flow Controller ◽  
Power Flow Controller

As the latest generation of flexible AC transmission system (FACTS) devices, the unified power flow controller (UPFC) has comprehensive control capability and has played an important role in modern power systems. Research on UPFC steady-state power flow regulation capability is valuable for the design and operation of UPFC projects. To analyze the UPFC regulation capability, in this paper, the interaction between the UPFC and the external system is studied and the key factors of UPFC regulation capability are analyzed. It is demonstrated that the changes in the voltage magnitude and phase angle difference of UPFC-embedded line terminals will hinder the UPFC from regulating the power flow and decrease the UPFC regulation capability. Therefore, the UPFC power flow regulation capability is not only related to the parameters of the UPFC and its installation line, but also related to grid parameters. To analyze the UPFC active power flow regulation capability in practical power grids, the relationship between the UPFC regulation capability and grid parameters is deduced, and an estimation method is proposed to calculate the regulation range. Then, the estimation method is applied in the Chuxiong Power Grid and compared with power flow calculations. The results verify the UPFC power flow regulation characteristics given by the analysis and the effectiveness of the estimation method. Besides, it is shown that the estimation method can lower the requirements for the power flow calculation program, and reduce computation load.

Experimental Investigation of Static Load Characteristics

2014 ◽  
Vol 960-961 ◽  
pp. 969-973 ◽  
Author(s):  
Alexander Tavlintsev ◽  
Andrey Pazderin ◽  
Anton Suvorov ◽  
Pavel V. Chusovitin ◽  
Olga Malozemova
Keyword(s):  
Experimental Investigation ◽  
Steady State ◽  
Power Flow ◽  
Static Load ◽  
State Power ◽  
Power Flow Calculation ◽  
Load Model ◽  
Order Polynomial ◽  
System Data ◽  
Load Characteristics

It is common practice to use 2nd order polynomial load model for steady-state power flow calculation. The paper describes the experiment for obtaining static load characteristics and the technique for identifying coefficients of the load model based on remote metering system data.

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