Experimental Study on Slope Modified Sawtooth Multiplying Reactive Power Control by Using Power Factor Correction Converter

2019 ◽  
Vol 139 (9) ◽  
pp. 791-799
Author(s):  
Ken-ichi Kondo ◽  
Jumpei Baba
Keyword(s):  
Experimental Study ◽  
Power Control ◽  
Power Factor ◽  
Reactive Power ◽  
Power Factor Correction ◽  
Reactive Power Control

scholarly journals Comparison of Reactive Power Control Techniques for Solar PV Inverters to Mitigate Voltage Rise in Low-Voltage Grids

Electronics ◽  
2021 ◽  
Vol 10 (13) ◽  
pp. 1569
Author(s):  
Dilini Almeida ◽  
Jagadeesh Pasupuleti ◽  
Janaka Ekanayake
Keyword(s):  
Power Control ◽  
Power Factor ◽  
Power Flow ◽  
Reactive Power ◽  
Low Voltage ◽  
Voltage Regulation ◽  
Solar Pv ◽  
Reactive Power Control ◽  
Control Techniques ◽  
Power Factor Control

The greater integration of solar photovoltaic (PV) systems into low-voltage (LV) distribution networks has posed new challenges for the operation of power systems. The violation of voltage limits attributed to reverse power flow has been recognized as one of the significant consequences of high PV penetration. Thus, the reactive power control of PV inverters has emerged as a viable solution for localized voltage regulation. This paper presents a detailed study on a typical Malaysian LV distribution network to demonstrate the effectiveness of different reactive power control techniques in mitigating overvoltage issues due to high PV integration. The performance of four reactive power control techniques namely, fixed power factor control, scheduled power factor control, power factor control as a function of injected active power, and voltage-dependent reactive power control were analyzed and compared in terms of the number of customers with voltage violations, reactive power compensation, and network losses. Three-phase, time-series, high-resolution power-flow simulations were performed to investigate the potential overvoltage issues and to assess the performance of the adoption of reactive power controls in the network. The simulation results revealed that the incorporation of reactive power controls of solar PV inverters aids in successfully mitigating the overvoltage issues of typical Malaysian networks. In particular, the Volt-Var control outperformed the other control techniques by providing effective voltage regulation while requiring less reactive power compensation. Furthermore, the comparative analysis highlighted the significance of employing the most appropriate control technique for improved network performance.

scholarly journals Development and experimental study of circuits of contactless device for automation of compensation of reactive power of capacitor batteries

2021 ◽  
Vol 289 ◽  
pp. 07012
Author(s):  
Maxsud K. Bobojanov ◽  
Raxmatillo Ch. Karimov ◽  
Toir H. Qosimov ◽  
Shokhin Dzh. Dzhuraev
Keyword(s):  
Experimental Study ◽  
Power Control ◽  
Power Factor ◽  
Power Supply ◽  
Reactive Power ◽  
Experimental Studies ◽  
Load Current ◽  
New Device ◽  
Capacitor Banks ◽  
Automatic Power Control

This article presents material based on the results of the analysis of literature sources on automatic devices for regulating reactive power in power supply systems. The operating mode of the compensating devices is determined taking into account the permissible voltage deviations at the terminals of the electric power receivers. Voltage, load current, reactive power directions, power factor, phase angle between the supply voltage and load current, and time can be used as control parameters. In addition, the article provides information regarding the performance of the developed circuits of contactless devices and verification of the experimental study of the operation of installations with their use. Also presented is material on the experimental study of a prototype of a contactless switching device for automatic power control of capacitor banks in various operating modes. Summarizing the results of experimental studies of a new device for automatic power control of capacitor banks, it can be stated that it fully meets the requirements for such devices and can ensure reliable operation of the power supply network with an appropriate power factor.

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