A method of chopper gate control based on instantaneous power flow regulation

1988 ◽  
Vol 108 (3) ◽  
pp. 82-91
Author(s):  
Makoto Nohmi
Keyword(s):  
Power Flow ◽  
Flow Regulation ◽  
Instantaneous Power ◽  
Gate Control

scholarly journals Optimal Multiobjective Control of Low-Voltage AC Microgrids: Power Flow Regulation and Compensation of Reactive Power and Unbalance

2020 ◽  
Vol 11 (2) ◽  
pp. 1239-1252 ◽  
Author(s):  
Danilo I. Brandao ◽  
Willian M. Ferreira ◽  
Augusto M. S. Alonso ◽  
Elisabetta Tedeschi ◽  
Fernando P. Marafao
Keyword(s):  
Power Flow ◽  
Reactive Power ◽  
Low Voltage ◽  
Flow Regulation ◽  
Multiobjective Control

scholarly journals A Modular Approach to Power Flow Regulation Solution

2015 ◽  
Vol 9 (1) ◽  
pp. 91-98
Author(s):  
Yang Liu-Lin ◽  
Hang Nai-Shan ◽  
Liu Bai-Jiang
Keyword(s):  
Power Flow ◽  
Flow Regulation ◽  
Differential Method ◽  
Differential Sensitivity ◽  
Differential Analysis ◽  
Operating Modes ◽  
Node Voltage ◽  
Correction Equations ◽  
Mixed Variable ◽  
Power Flow Problem

The operating modes of generations and the voltage states of power system must be solved when calculating and analyzing the power flow problem with operation demands. The generation variable differential were derived as well as the complete principle of variable differential analysis was formed, based on the model of expanded power flow with constraints, by using the implicit function differential method, the linear composing relation between the voltage variable differential and the expanded correction equations which included the equations of PQV node and branch power, solutions were also proposed. This new solving method is not featured in minimum variables however it is featured as a one-time simultaneous solution. Through the IEEE 5 bus system, the analyzing cases of total differential sensitivity and operation under conditions of constant line power and constant node voltage were carried out, these cases described the fact that the mixed variable solving method of power flow regulation has a simple form, small calculation volume and efficiency.

scholarly journals Power Flow Regulation by UPFC in Networks with Voltage Dependent Loads

2020 ◽  
Vol 8 (6) ◽  
pp. 925-932
Keyword(s):  
Power Flow ◽  
Flow Analysis ◽  
Flow Regulation ◽  
Load Flow ◽  
Constant Current ◽  
Voltage Source ◽  
Unified Power Flow Controller ◽  
Flow Equations ◽  
Load Flow Analysis ◽  
Voltage Dependent

In this paper calculations are made to find out the power flow regulation capabilities of Unified Power Flow Controller (UPFC) in load flow analysis with loads which are voltage dependent. New equations for load flow analysis are developed that includes the models of voltage sensitive loads and voltage sources model of UPFC. Newton Raphson algorithm is used to solve the power flow equations of the network. UPFC voltage source model when included in the power equations has unique advantages over other modeling approaches. Analysis is done for two types of Loads. In the first analysis Constant current, Constant Power and Constant Impedance type of loads are examined. In the second analysis Composite loads are analyzed. The results of analysis on standard 5 bus system is presented here as a case study.

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