scholarly journals RETRACTED ARTICLE: Three New Structures for Reactive Power Market by Considering Reactive Losses Caused by the Active Power Flow

2019 ◽  
Vol 44 (4) ◽  
pp. 1687-1687 ◽  
Author(s):  
A. Ahmadimanesh ◽  
M. Kalantar
Keyword(s):  
Power Flow ◽  
Reactive Power ◽  
Power Market ◽  
Active Power ◽  
Retracted Article ◽  
Active Power Flow ◽  
Reactive Power Market

scholarly journals MATLAB SIMULATION OF D-STATCOM USING SVPWM

2020 ◽  
Vol 5 (5) ◽  
pp. 184-195
Author(s):  
Adeesh Sharma ◽  
Himmat Singh
Keyword(s):  
Power Factor ◽  
Distribution System ◽  
Power Flow ◽  
Reactive Power ◽  
Active Power ◽  
Static Synchronous Compensator ◽  
Power Flow Control ◽  
Control Power ◽  
Active Power Flow ◽  
Distribution Line

In this paper, A Distribution Static Synchronous Compensator (D-STATCOM) is used for improving the power factor, power quality and to control power flow control in the distribution line. It used to give reactive and active power compensation in the distribution line. The power depends on the power factor of the loads connected to the transmission line. In this paper we have used a new DSTATCOM using modified SVPWM technique. The previous DSTATCOM are basically controlled by PWM, or SPWM technique which produce high harmonics distortion but using SVPWM technique distortion reduces to maximum possible level. In our system we also have examined the losses due to DSTATCOM when connected in the distribution system. To decrease the reactive power and to minimize the undesirable load to require maintains the flow of reactive power. As a result, the power a factor of the load descant, leading to the limitation of the active power flow in the line. The D-STATCOM is a power electronics based on advanced device can be used to control power flow in the distribution line. The construction of system is able to recover the drop-in bus voltage when any loading effect arises, but due to 5th harmonic performance of DSTATCOM reduces somewhere.

Modification of the mandatory generation region of producers in the reactive power market by considering reactive power losses

2017 ◽  
Vol 28 (7) ◽  
pp. 744-762 ◽  
Author(s):  
A Ahmadimanesh ◽  
M Kalantar
Keyword(s):  
Market Structure ◽  
Power Flow ◽  
Reactive Power ◽  
Power Market ◽  
Test System ◽  
Power Losses ◽  
Synchronous Generators ◽  
Fair Competition ◽  
Generation Region ◽  
Reactive Power Market

In this paper, a new reactive power market structure is studied and presented. Active power flow by itself causes active and reactive losses. Considering such losses in the reactive power market without paying any costs is the main purpose of this paper. So, this study tries to improve reactive power market and create fair competition in reactive power generation through improving the market structure. For this aim, firstly a new allocation method for reactive power losses is presented, and contribution of each producer in reactive losses is calculated. In the next step, this share of losses is used for modification of the mandatory generation region of units and the new structure of reactive power market is proposed. Also, in this work, the cost payment function of synchronous generators is modified. In order to simulate and describe the proposed methods in the implementation of the reactive power market, IEEE 24 bus reliability test system is applied and the proposed methods are compared with each other and the conventional reactive power market structure. As will be shown, the total payment by ISO will be reduced by using the proposed methods.

scholarly journals OPTIMAL POWER FLOW USING STATCOM

2021 ◽  
Vol 5 (10) ◽  
Author(s):  
Tanisha Bharol ◽  
Pranjali Bora ◽  
Sravani Sai M ◽  
Dhruvi Bansal ◽  
Dr. Sandeep Sharma
Keyword(s):  
Power System ◽  
Transmission Lines ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Reactive Power ◽  
Stability Limit ◽  
Active Power ◽  
Main Concern ◽  
Optimal Power ◽  
Active Power Flow

— In power system, active power flow is the main concern in order to manage the demand supply. The maximum use of the transmission lines under their stability limit is very much required. Flexible alternating current transmission system (FACTS) device are very much useful to control power system parameters. A STATCOM (STATCOM) is a FACTS device which is able to control active and reactive power with voltage magnitude and phase angle. In this paper, STATCOM is used in a 10 bus system to control the flow of active power under contingency condition. Simulation result shows the effectiveness of the STATCOM in providing the optimal power flow in the power system considered here.

scholarly journals Power Quality Enhancement in Windfarm by using STATCOM

2020 ◽  
Vol 8 (5) ◽  
pp. 596-601
Keyword(s):  
Wind Turbine ◽  
Power Flow ◽  
Reactive Power ◽  
Dynamic Performance ◽  
Active Power ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Dc Microgrid ◽  
Active Power Flow ◽  
Shunt Compensation

A FACTS (Flexible AC Transmission) controlled device, STATCOM is the best solution for power compensation in the area of microgrid system. It regulates the reactive power by injecting the reactive current in to the ac/dc hybrid microgrid terminals. The STATCOM is applicable for shunt compensation which has a great role in dynamic performance by controlling its reactive power. The proposed work demonstrated about the enhancement of voltage sag during fault condition. It can improve the wind turbine performance. The main objective for the STATCOM application in windfarm is to improve the system voltage by supplying or absorbing the reactive power into hybrid ac /dc microgrid system. During steady state operation, the fundamental component of the VSC (Voltage source converter) voltage in phase with system voltage, which shows uncontrol action on active power flow. If there is change between these two voltages (lead or lag), then STATCOM can generates (or absorbs) reactive power. This phase shift leads to flow of active power which is responsible for increase or decreases of capacitor voltage. Assumption has been taken by considering the fixed speed of wind turbine. The performance of windfarm with and without STATCOM is examined and analyzed under fault condition by using MATLAB Simulink 2016.

scholarly journals Phase-Independent Reactive Power Compensation Based on Four-Wire Power Converter in the Presence of Angular Asymmetry between Voltage Vectors

Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 497
Author(s):  
Dariusz Zieliński ◽  
Bartłomiej Stefańczak ◽  
Konrad Jędrys
Keyword(s):  
Urban Areas ◽  
Power Flow ◽  
Reactive Power ◽  
Power Transmission ◽  
Economic Benefits ◽  
Power Converter ◽  
Reactive Power Compensation ◽  
Active Power ◽  
Active Power Flow ◽  
Reactive Power Compensator

The paper presents the reactive power compensation method that allows for reducing the active power flow even in the presence of angular asymmetry between voltage vectors of the utility grid. Reactive power compensation ensures the reduction of power transmission losses and therefore brings significant economic benefits to electricity consumers. The concept of the alternating current/direct current (AC/DC) converter for prosumer applications operating as a local reactive power compensator has been proposed. The system is driven by a multi-resonant algorithm, allowing for independent control of the reactive power in each phase. The proposed method was validated experimentally by using a prototype of the converter, programmable AC source, and grid impedance model. The method made it possible to cover the reactive power demand without unnecessary active power generation and thus to improve the efficiency of the analyzed prototype. This solution can be implemented particularly in radial grids and non-urban areas.

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