Voltage-Based Hybrid Algorithm Using Parameter Variations and Stockwell Transform for Islanding Detection in Utility Grids

نویسندگان

چکیده

This paper has introduced an algorithm for the identification of islanding events in remotely located distribution grid with renewable energy (RE) sources using voltage signals. Voltage signal is processed Stockwell transform (ST) to compute median-based recognition factor (MIRF). The rate change root mean square (RMS) computed by differentiating RMS respect time (VRCIRF). proposed voltage-based (IRFV) multiplying MIRF and VRCIRF element element. event discriminated from faulty operational simple decision rules peak magnitude IRFV comparing pre-set threshold values. detection method (IDM) effectively identified presence solar energy, wind simultaneous both at a fast period less than 0.05 cycles compared (ROCOV) frequency (ROCOF) IDM that detects 0.25 0.5 cycles. provides minimum non-detection zone (NDZ). efficiently switching events. study performed on IEEE-13 bus test system interfaced generators MATLAB/Simulink environment. performance better methods based use ROCOV, ROCOF discrete wavelet (DWT).

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

islanding detection methods for microgrids

امروزه استفاده از منابع انرژی پراکنده کاربرد وسیعی یافته است . اگر چه این منابع بسیاری از مشکلات شبکه را حل می کنند اما زیاد شدن آنها مسائل فراوانی برای سیستم قدرت به همراه دارد . استفاده از میکروشبکه راه حلی است که علاوه بر استفاده از مزایای منابع انرژی پراکنده برخی از مشکلات ایجاد شده توسط آنها را نیز منتفی می کند . همچنین میکروشبکه ها کیفیت برق و قابلیت اطمینان تامین انرژی مشترکان را افزایش ...

15 صفحه اول

Islanding detection in micro-grids using sum of voltage and current wavelet coefficients energy

This paper presents wavelet based islanding detection in distributed generation (DG) interfaced to the microgrid. Also a new fast method is developed for islanding detection based on measuring the utility currents and voltages signals processed by discrete wavelet transform. These currents and voltages signals are measured before the main circuit breaker of microgrid network and their features ...

متن کامل

Fabric Defect Detection in Stockwell Transform Domain

To improve the accuracy and speed of the fabric defect detection, a novel and automated algorithm is proposed in this paper. The method is based on the Stcokwell transform (or S-transform, ST), a mathematical operation that provides the frequency content at each time point within a time-varying signal. Firstly, gray level integral projection is performed on the fabric image data to obtain a one...

متن کامل

Inverter based distributed generator islanding detection method using U/O voltage relay

Islanded operation of distributed generators is a problem that can take place when they are connected to a distribution system. In this paper an islanding detection method is presented for inverter based distributed generation (DG) using under/over voltage relay. The method is an adaptive one and is based on the change of DG active power reference (Pref) in inverter control interface. The activ...

متن کامل

Multi-objective and Scalable Heuristic Algorithm for Workflow Task Scheduling in Utility Grids

 To use services transparently in a distributed environment, the Utility Grids develop a cyber-infrastructure. The parameters of the Quality of Service such as the allocation-cost and makespan have to be dealt with in order to schedule workflow application tasks in the Utility Grids. Optimization of both target parameters above is a challenge in a distributed environment and may conflict one an...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Informatics (Basel)

سال: 2021

ISSN: ['2227-9709']

DOI: https://doi.org/10.3390/informatics8020021