scholarly journals A New Fuzzy Based UPFC Topology for Active Power Enhancement in an offshore Wind Farm

2021 ◽  
Vol 7 (1) ◽  
pp. 1-10
Author(s):  
Dhanvanti Rathore ◽  
N K Singh
Keyword(s):  
Fuzzy Logic ◽  
Power System ◽  
Power Flow ◽  
Wind Farm ◽  
Reactive Power ◽  
Energy System ◽  
Transmission System ◽  
Active Power ◽  
Offshore Wind ◽  
Long Distance

The stability of a power system is the ability of a power system to restore an operating state of equilibrium for a given initial operating condition after it has been subjected to a physical disturbance, most of the variables of the system being limited so that almost the entire system remains intact. To create a MATLAB SIMULINK model of odd shore wind energy system having power being transmitted through DC transmission system. The first model will have no power flow controller and second model will have artificial intelligence based controlling technique. To design a controller for enhancing the power output from the wind energy system using UPFC. This will be made to feed DC transmission system. Finally integrating the system with long distance DC transmission system and then to the grid so as to make it more reliable and efficient. In this work a coordinated control based on Fuzzy logic for UPFC for cluster of offshore WPP connected to the same HVDC connection is being implemented and analyzed. The study is targeting coordination of reactive power flow and active power flow between HVDC Converter and the WPP cluster while providing offshore AC grid voltage control. Thus it can be drawn from this work that while designing a power control strategy the proposed fuzzy logic based active power controller in UPFC can serve the purpose with better results in terms of active as well as reactive power. This control can also be used in hybrid systems thus making it more reliable controlling method. The

scholarly journals Fuzzy controlled SVC for power system damping

2020 ◽  
Vol 18 (3) ◽  
pp. 1673
Author(s):  
Zalina Kamis ◽  
Mohd Ruddin Ab. Ghani ◽  
Muhammad Nizam Kamaruddin ◽  
Hairol Nizam Mohd Shah
Keyword(s):  
Fuzzy Logic ◽  
Power System ◽  
Reactive Power ◽  
Short Circuit ◽  
Active Power ◽  
Fuzzy Membership Function ◽  
Base System ◽  
Additional Signal ◽  
Mode Oscillation ◽  
Tie Line

<p>This paper presents the ability of the fuzzy logic-based stabilizer used to generate the supplementary voltage control signal of the SVC to improve the damping of the inter-area mode oscillation in the power system. The base system is symmetrical, consisting of two identical areas connected by a relatively weak tie line. The SVC is chosen to be installed at the tie line midpoint. The active power of the local line will be used as an input signal for the stabilizer. The additional signal is calculated using fuzzy membership function to determine the quantity of reactive power supplied absorbed by SVC. The system oscillation is indicated by a 3-phase-to-ground short circuit occurring at 0.2s of the simulation and subsequently clearing after 100ms. Simulation with the sample power system shows that when subjected to a disturbance, fuzzy logic-based SVC stabilizer provides good damping in inter-area mode oscillation for the system. The effectiveness of the stabilizer applied with and without PSS will also be investigated.</p>

scholarly journals Resource aware wind farm and D-STATCOM optimal sizing and placement in a distribution power system

2021 ◽  
Vol 11 (6) ◽  
pp. 4641
Author(s):  
Anzum Ansari ◽  
Shankarlingappa C. Byalihal
Keyword(s):  
Power System ◽  
Distribution System ◽  
Wind Farm ◽  
Reactive Power ◽  
Wind Farms ◽  
Offshore Wind ◽  
Optimal Placement ◽  
Offshore Wind Farms ◽  
Optimal Sizing ◽  
Multi Objective

<span lang="EN-US">Doubly fed induction generators (DFIG) based wind farms are capable of providing reactive power compensation. Compensation capability enhancement using reactors such as distributed static synchronous compensator (D-STATCOM) while connecting distribution generation (DG) systems to grid is imperative. This paper presents an optimal placement and sizing of offshore wind farms in a coastal distribution system that is emulated on an IEEE 33 bus system. A multi-objective formulation for optimal placement and sizing of the offshore wind farms with both the location and size constraints is developed. Teaching learning algorithm is used to optimize the multi-objective function constraining on the capacity and location of the offshore wind farms. The proposed formulation is a multi-objective problem for placement of the wind generator in the power system with dynamic wind supply to the power system. The random wind speed is generated as the input and the wind farm output generated to perform the optimal sizing and placement in the distributed system. MATLAB based simulation developed is found to be efficient and robust.</span>

scholarly journals Transient Stability Enhancement of DFIG based Offshore Wind Farm Connected to a Power System Network using STATCOM

2018 ◽  
Vol 7 (3.12) ◽  
pp. 1303
Author(s):  
Varun Kumar ◽  
Vipin Patel ◽  
A S Pandey ◽  
S K Sinha ◽  
Dilip Kumar
Keyword(s):  
Power System ◽  
Wind Farm ◽  
Transient Stability ◽  
Reactive Power ◽  
Offshore Wind ◽  
Offshore Wind Farm ◽  
Aggregate Model ◽  
Power Requirement ◽  
Transient Disturbances ◽  
Terminal Voltage

This paper presents the transient stability enhance of DFIG-based offshore wind farm connected power system network using STATCOM. The studied system is simulated in MATLAB/Simulink platform for study the effect of transient disturbances like, three phases to ground fault, sudden load change, voltage sag & swell. A fully aggregate model of wind DFIG is used for simulation study of system. The DFIG based wind generator, more sensitive to the grid faults than other wind generators. During transient disturbances DFIG terminal voltage reduced below the critical value and hence DFIG trips. The external reactive power support is required for stabilization of wind farm during the transient disturbances. In studied system STATCOM is used to fulfil the reactive power requirement to stabilize the wind farm. In presence of STATCOM, DFIG does not trip during transient disturbances of power system and all bus voltages & DFIG terminal voltage are also improved. 

scholarly journals SIMULASI ALIRAN DAYA PADA SISTEM TENAGA LISTRIK DI GARDU INDUK GANDUL PT. PLN (PERSERO) MENGGUNAKAN SOFTWARE MATLAB POWER SYSTEM ANALYSIS TOOLBOX (PSAT) 2.1.7 DENGAN METODE NEWTON RAPHSON

2020 ◽  
Vol 5 (1) ◽  
pp. 14-20
Author(s):  
Endiansyah Pradana ◽  
Rif’an Muhammad ◽  
Imam Arif Raharjo
Keyword(s):  
Power System ◽  
Power Flow ◽  
System Analysis ◽  
Reactive Power ◽  
Flow Simulation ◽  
Numerical Data ◽  
Small Error ◽  
Active Power ◽  
Simulation Software ◽  
Power System Analysis

ABSTRACT This study aims to determine the results of the simulation of the power flow transformer 4 10 buses in the Gandul Substation of PT. PLN (Persero) with MATLAB Power System Analysis Toolbox (PSAT) 2.1.7. To find out the results of a comparison of the simulation of the flow of power 4 transformer 10 buses in the Gandul substation PT. PLN (Persero) MATLAB PSAT 2.1.7 software with ETAP software 12.6.Data analysis technique used in this study is quantitative descriptive analysis method. Descriptive will only describe the state of a symptom that has been recorded and then processed according to its function. Descriptive statistics are statistics that have the task of organizing and analyzing numerical data, in order to provide a regular, concise and clear picture of a phenomenon, event or situation, so that certain understandings or meanings can be drawn.The results of research on power flow at the Gandul substation PT. PLN (Persero) uses MATLAB Power System Analysis Toolbox (PSAT) 2.1.7 simulation of power flow with MATLAB PSAT 2.1.7 software completed at Power Flow Completed 0.066 s with a number of 2 iterations, iteration 1 shows Maximum Convergency Error 0.0011257 and iteration 2 shows Maximum Convergency Error 1.2621e-06. While the result of the simulation software ETAP 12.6 the number of oterations completed in iteration 3.The results of power flow simulation software MATLAB PSAT 2.1.7 and ETAP 12.6 on Active Power (MW) have a fairly big error, which is 11.5%. The largest error value generated is 11.5%, namely the feeder Sheen and Niece. Then, the results of power flow simulation software MATLAB PSAT 2.1.7 and ETAP 12.6 on Reactive Power (MVar) have a fairly big error, which is 24.4%. The largest error value generated is 24.4%, which is found in Canggah feeders. And the results of power flow simulation software MATLAB PSAT 2.1.7 and ETAP 12.6 against voltage (kV) have a fairly small error. Almost every feeder has the same error from the Rainbow feeder to the niece.The conclusion in this study is the results of power flow simulation with MATLAB Power System Analysis Toolbox 2.1.7 show the value of Active Power of 15.1362 MW and Reactive Power of 10.0349 MVar. Meanwhile, the results of power flow simulation with ETAP 12.6 software show the value of Active Power of 15.3720 MW and Reactive Power of 10.3510 MVar.   ABSTRAK Penelitian ini bertujuan Untuk mengetahui hasil dari simulasi aliran daya Trafo 4 10 bus di Gardu Induk Gandul PT. PLN (Persero) dengan software MATLAB Power System Analysis Toolbox (PSAT) 2.1.7. Untuk mengetahui hasil perbandingan simulasi aliran daya Trafo 4 10 bus di Gardu Induk Gandul PT. PLN (Persero) software MATLAB PSAT 2.1.7 dengan software ETAP 12.6. Teknik analisis data yang digunakan pada penelitian ini adalah metode analisis desktriptif kuantitatif. Deskriptif hanya akan mendeskripsikan keadaan suatu gejala yang telah direkam kemudian diolah sesuai dengan fungsinya. Statistik deskriptif adalah statistik yang mempunyai tugas mengorganisasi dan menganalisa data angka, agar dapat memberikan gambaran secara teratur, ringkas dan jelas, mengenai suatu gejala, peristiwa atau keadaan, sehingga dapat ditarik pengertian atau makna tertentu. Hasil penelitian aliran daya di gardu induk Gandul PT. PLN (Persero) menggunakan software MATLAB Power System Analysis Toolbox (PSAT) 2.1.7 simulasi aliran daya dengan software MATLAB PSAT 2.1.7 selesai pada Power Flow Completed 0.066 s dengan jumlah 2 iterasi, iterasi 1 menunjukkan Maximum Convergency Error 0.0011257 dan iterasi 2 menunjukkan Maximum Convergency Error 1.2621e-06. Sedangkan hasil simulasi software ETAP 12.6 jumlah iterasi selesai pada iterasi 3. Hasil simulasi aliran daya software MATLAB PSAT 2.1.7 dan ETAP 12.6 pada Daya Aktif (MW) mempunyai error yang cukup besar, yaitu 11.5%. Nilai error terbesar yang dihasilkan sebesar 11.5% yaitu pada penyulang Kemilau dan Keponakan. Lalu, hasil simulasi aliran daya software MATLAB PSAT 2.1.7 dan ETAP 12.6 pada Daya Reaktif (MVar) mempunyai error yang cukup besar, yaitu 24.4%. Nilai error terbesar yang dihasilkan sebesar 24.4%, yaitu terdapat pada penyulang Keponakan. Dan hasil simulasi aliran daya software MATLAB PSAT 2.1.7 dan ETAP 12.6 terhadap tegangan (kV) mempunyai error yang cukup kecil. Hampir setiap penyulang mempunyai error yang sama dari penyulang Pelangi hingga Keponakan. Kesimpulan dalam penelitian ini yaitu Hasil simulasi aliran daya dengan software MATLAB Power System Analysis Toolbox 2.1.7 menunjukkan nilai Daya Aktif sebesar 15.1362 MW dan Daya Reaktif sebesar 10.0349 MVar. Sedangkan, hasil simulasi aliran daya dengan software ETAP 12.6 menunjukkan nilai Daya Aktif sebesar 15.3720 MW dan Daya Reaktif sebesar 10.3510 MVar.

Tracking and Analysis of Two-Dimensional Saddle Node Bifurcation Boundary in Wind Power System with Reactive Power Compensation of STATCOM

2011 ◽  
Vol 317-319 ◽  
pp. 1778-1782 ◽  
Author(s):  
You Jie Ma ◽  
Jin Hua Liu ◽  
Xue Song Zhou ◽  
Ji Li
Keyword(s):  
Power System ◽  
Wind Power ◽  
Voltage Stability ◽  
Wind Farm ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
Active Power ◽  
Two Dimensional ◽  
Saddle Node Bifurcation ◽  
Wind Power System

As a new dynamic reactive compensation devices, static synchronous compensator (STATCOM) has better reactive power compensation effect such as small in size, capacity, continuous adjusting, fast response and economic performance compared with SVC. It is suitable to be used in large-scale wind farm to improve the voltage stability of wind power system. With the help of ideas and methods in conventional electric power system to calculate the two-dimensional parameter bifurcation boundary, the node voltage two-dimensional saddle-node bifurcation boundary of wind power system was calculated by using wind farm active power inject(Pin ),STATCOM parameters KMdc and Vrefdc as bifurcation control parameters. And on the basis of this analysis, the laws of wind power system voltage stability affected by active power and STATCOM parameters were obtained.

scholarly journals Implementation of UPFC for Improving the Power Flow and Voltage Stability with Fuzzy Logic Controller

2019 ◽  
Vol 8 (12) ◽  
pp. 2723-2727
Keyword(s):  
Fuzzy Logic ◽  
Power Flow ◽  
Voltage Stability ◽  
Fuzzy Logic Controller ◽  
Reactive Power ◽  
Simulation Models ◽  
Active Power ◽  
Control Voltage ◽  
Unified Power Flow Controller ◽  
Bus Voltage

This paper deals about one of the FACTS devices which is called UPFC (Unified Power Flow Controller). It is used to control reactive (KVAR) and active power (KW) by means of adjusting bus voltage at the located line. UPFC can improve the quality of power within their limits on the targeted line. That’s why this device has the different way of controlling the power flow and voltage stability. Without UPFC, it is impossible to control voltage, reactive and active power. In this thesis, we can also analyze by attaching fuzzy logic controller to this system. The simulation models are made in MATLAB software. Under simulation we get results for with and without using UPFC and then we compare these results in the form of active and reactive power in the required line. By comparing these results, we decide that UPFC is an ideal controller.

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