Digital Simulator

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Venkata Dinavahi - One of the best experts on this subject based on the ideXlab platform.

  • a versatile cluster based real time Digital Simulator for power engineering research
    IEEE Transactions on Power Systems, 2006
    Co-Authors: M O Faruque, Venkata Dinavahi
    Abstract:

    This paper presents the development of a unique parallel and distributed real-time Digital Simulator for power engineering research at the University of Alberta. The Simulator is built entirely from commodity-off-the-shelf (COTS) hardware and software components, making it very flexible and scalable. In parallel multi-tasking operations, a combination of real-time Linux operating system and an ultra-fast network forms the backbone for the internal communication between the 16 powerful processors of the Xeon-Cluster. Field programmable gate array (FPGA)-based multi-channel Digital and analog I/O ports are interfaced to communicate with the external hardware components. The model development software utilized for power applications is based on the highly customizable industry-standard MATLAB/SIMULINK environment. A detailed case study of the real-time simulation of a three-level 12-pulse vector-controlled ac drive is presented to illustrate the precision capabilities of the Simulator. Multiple integration algorithms and multirate computation have been applied for the simulation of the system, with slow (machine) and fast (converter) dynamic components. Real-time simulation of the entire system has been achieved with a maximum computation time of 5.35 /spl mu/s on a step-size of 10 /spl mu/s for the first time. Results obtained from the real-time simulation have been validated with an offline simulation using PSCAD/EMTDC.

  • design of a real time Digital Simulator for a d statcom system
    IEEE Transactions on Industrial Electronics, 2004
    Co-Authors: Venkata Dinavahi, R Iravani, R Bonert
    Abstract:

    Real-time Digital simulation of power electronic systems requires significant computational resources due to increasingly complex system configurations, control algorithms, and higher switching frequency. Consequently, it is prudent to exploit various computer resources for optimizing the design of Simulators/controllers for such systems. This paper presents the design and implementation details of a real-time Digital Simulator for a Voltage-Source-Converter-based Distribution STATic COMpensator (D-STATCOM) power system. The design process adopts a modular approach utilizing distributed Digital signal processor/field-programmable gate array resources of a Digital processing platform. The design has been validated by using an experimental setup of a 5-kVA D-STATCOM system.

Saikat Chakrabarti - One of the best experts on this subject based on the ideXlab platform.

  • An exhaustive search based topology error detection method and its validation in real time Digital Simulator
    TENCON 2017 - 2017 IEEE Region 10 Conference, 2017
    Co-Authors: Ankur Srivastava, Anamika Dubey, Saikat Chakrabarti
    Abstract:

    An exhaustive search based topology error detection method for power systems is presented in this paper. The method is based on minimization of the measurement residual. Power systems completely observable by PMUs is considered here. Realtime voltage and current measurements from PMUs are simulated using real time Digital Simulator (RTDS). The simulation considers both GTNET and hardware PMUs. The measurements are received and time aligned using iPDC. The exhaustive search method with inclusion of measurement vector is executed on MATLAB platform, and it was found that the execution is possible before the arrival of every alternate measurement set from PMUs. The concept has been illustrated and validated on IEEE 14-bus test system.

  • testing and validation of power system dynamic state estimators using real time Digital Simulator rtds
    IEEE Transactions on Power Systems, 2016
    Co-Authors: Ankush Sharma, S C Srivastava, Saikat Chakrabarti
    Abstract:

    This paper presents an approach to test and validate a number of power system dynamic state estimation (PSDSE) algorithms, utilizing Real Time Digital Simulator (RTDS), a real-time simulation tool. WSCC 9-bus and IEEE 30-bus systems have been utilized to demonstrate the proposed approach. The test systems are developed on the RSCAD software of the RTDS. The conventional remote terminal unit (RTU) measurements and the phasor measurement unit (PMU) measurements are sent from the RTDS runtime environment to the MATLAB based PSDSE application at regular intervals for the estimation of the states, using software-in-the-loop (SIL) configuration. The PSDSE is solved by utilizing the extended Kalman filter (EKF), the unscented Kalman filter (UKF), and the cubature Kalman filter (CKF) approaches, and their relative performances are studied with the help of the simulation results on the two test systems.

Minwon Park - One of the best experts on this subject based on the ideXlab platform.

  • Hardware-in-the-loop Simulation Method for a Wind Farm Controller Using Real Time Digital Simulator
    Journal of Electrical Engineering and Technology, 2014
    Co-Authors: Gyeong-hun Kim, Jin-hong Jeon, Jong-yul Kim, Seul-ki Kim, Eung-sang Kim, Ju-han Lee, Minwon Park
    Abstract:

    A hardware-in-the-loop simulation (HILS) method for a wind farm controller using a real time Digital Simulator (RTDS) is presented, and performance of the wind farm controller is analyzed. A 100 MW wind farm which includes 5 MW wind power generation systems (WPGS) is modeled and analyzed in RSCAD/RTDS. The wind farm controller is implemented by using a computer, which is connected to the RTDS through transmission control protocol/internet protocol (TCP/IP). The HILS results show the active power and power factor of the wind farm, which are controlled by the wind farm controller. The proposed HILS method in this paper can be effectively utilized to validate and test a wind farm controller under the environment in practice without a real wind farm.

  • FGIT-CA/CES3 - Simulation Analysis of Microgrid Using Real Time Digital Simulator
    Communications in Computer and Information Science, 2011
    Co-Authors: Serim Heo, Gyeong-hun Kim, Minwon Park
    Abstract:

    Microgrid is a new type of electric power grid which consists of distributed generation systems, energy storage devices and loads. It can operate either in grid-connected or islanded operation mode. Due to environmental pressure and enhanced demands on quality, security and reliability of electric power energy system, a microgrid has become a subject of special interest. In this paper, microgrid which has permanent magnet synchronous generator type wind power generation system, photovoltaic power genetation system, diesel generator, battery energy storage system (BESS), energy storage system (ESS) with an electric double layer capacitor (EDLC) and load was modeled using real time Digital Simulator. The modeled microgrid was simulated in both grid-connected and islanded operation mode. Simulation results represent that microgrid can supply high quality electric power to customers through the operation BESS and ESS with an EDLC. The modeled microgrid can be utilized to develop management system for a microgrid.

  • Analysis of voltage faults in the grid-connected inverter of a wind power generation system using real-time Digital Simulator
    8th International Conference on Power Electronics - ECCE Asia, 2011
    Co-Authors: Byeong-mun Song, Chul-sang Hwang, Minwon Park
    Abstract:

    This paper presents the analysis of voltage faults of the grid-connected inverter of a 3MW wind power generation system (WPGS). The analysis using a real time Digital Simulator (RTDS) is performed and evaluated for voltage faults to enable to withstand voltage dips during transient disturbance. For validation, typical voltage sag conditions and faults are deployed to the system. Simulation and experimental results validate that the analytical model is introduced and implemented under transient grid conditions.

  • Design and manufacture of a toroidal-type SMES for combination with real-time Digital Simulator (RTDS)
    Cryogenics, 2011
    Co-Authors: Kwangmin Kim, Hae Jong Kim, A. Rong Kim, Minwon Park, Seokho Kim, Myunghwan Sohn, B.y. Eom, Kidoek Sim, Joon-han Bae
    Abstract:

    Abstract The authors designed and manufactured a toroidal-type superconducting magnetic energy storage (SMES) system. The toroidal-type SMES was designed using a 3D CAD program. The toroidal-type magnet consists of 30 double pancake coils (DPCs). The single pancake coils (SPCs), which constitute the double pancake coils, are arranged at an angle of 6° from each other, based on the central axis of the toroidal-type magnet. The cooling method used for the toroidal-type SMES is the conduction cooling type. When the cooling method for the toroidal-type SMES was designed, the two-stage Gifford–McMahon (GM) refrigerator was considered. The Bi-2223 HTS wire, which was made by soldering brass on both sides of the superconductor, is used for the magnet winding. Finally, the authors connected the toroidal-type SMES to a real-time Digital Simulator (RSCAD/RTDS) to simulate voltage sag compensation in a power utility.

  • operational characteristic analysis of conduction cooling hts smes for real time Digital Simulator based power quality enhancement simulation
    Physica C-superconductivity and Its Applications, 2010
    Co-Authors: A. Rong Kim, Minwon Park, Gyeong-hun Kim, K.d. Sim, Kwangmin Kim, Daewon Kim, Seokho Kim, Myunghwan Sohn, Kichul Seong
    Abstract:

    This paper analyzes the operational characteristics of conduction cooling Superconducting Magnetic Energy Storage (SMES) through a real hardware based simulation. To analyze the operational characteristics, the authors manufactured a small-scale toroidal-type SMES and implemented a Real Time Digital Simulator (RTDS) based power quality enhancement simulation. The method can consider not only electrical characteristics such as inductance and current but also temperature characteristic by using the real SMES system. In order to prove the effectiveness of the proposed method, a voltage sag compensation simulation has been implemented using the RTDS connected with the High Temperature Superconducting (HTS) model coil and DC/DC converter system, and the simulation results are discussed in detail.

Vahan Gevorgian - One of the best experts on this subject based on the ideXlab platform.

  • Test Cases for Wind Power Plant Dynamic Models on Real-Time Digital Simulator: Preprint
    2012
    Co-Authors: Mohit Singh, E. Muljadi, Vahan Gevorgian
    Abstract:

    The objective of this paper is to present test cases for wind turbine generator and wind power plant models commonly used during commissioning of wind power plants to ensure grid integration compatibility. In this paper, different types of wind power plant models based on the Western Electricity Coordinating Council Wind Generator Modeling Group's standardization efforts are implemented on a real-time Digital Simulator, and different test cases are used to gauge their grid integration capability. The low-voltage ride through and reactive power support capability and limitations of wind turbine generators under different grid conditions are explored. Several types of transient events (e.g., symmetrical and unsymmetrical faults, frequency dips) are included in the test cases. The differences in responses from different types of wind turbine are discussed in detail.

  • Test cases for wind power plant dynamic models on real-time Digital Simulator
    2012 IEEE Power Electronics and Machines in Wind Applications, 2012
    Co-Authors: Mohit Singh, E. Muljadi, Vahan Gevorgian
    Abstract:

    The objective of this paper is to present test cases for wind turbine generator and wind power plant models commonly used during commissioning of wind power plants to ensure grid integration compatibility. In this paper, different types of wind power plant models based on the Western Electricity Coordinating Council Wind Generator Modeling Group's standardization efforts are implemented on a real-time Digital Simulator, and different test cases are used to gauge their grid integration capability. The low-voltage ride through and reactive power support capability and limitations of wind turbine generators under different grid conditions are explored. Several types of transient events (e.g., symmetrical and unsymmetrical faults, frequency dips) are included in the test cases. The differences in responses from different types of wind turbine are discussed in detail.

R Bonert - One of the best experts on this subject based on the ideXlab platform.

  • design of a real time Digital Simulator for a d statcom system
    IEEE Transactions on Industrial Electronics, 2004
    Co-Authors: Venkata Dinavahi, R Iravani, R Bonert
    Abstract:

    Real-time Digital simulation of power electronic systems requires significant computational resources due to increasingly complex system configurations, control algorithms, and higher switching frequency. Consequently, it is prudent to exploit various computer resources for optimizing the design of Simulators/controllers for such systems. This paper presents the design and implementation details of a real-time Digital Simulator for a Voltage-Source-Converter-based Distribution STATic COMpensator (D-STATCOM) power system. The design process adopts a modular approach utilizing distributed Digital signal processor/field-programmable gate array resources of a Digital processing platform. The design has been validated by using an experimental setup of a 5-kVA D-STATCOM system.