Technical Presentations

Author(s): Bob Arritt
Type:PDF Presentation
Downloaded: 13
Date: 2022-07-21

EMTP in Transmission Planning Research859

Abstract
The initiation of inverter-based generation (IBG) has been changing the characteristics of the grid. The addition of non-traditional generation sources gives rise to several grid concerns, such as red... see moreuced short-circuit fault current capacity and harmonic concerns. Because of this, the use of EMT studies has been becoming more common to accommodate special studies. This presentation will highlight a few examples of the use of EMTP in transmission level planning research.

Tag(s): inverter-based generation, short-circuit fault, harmonic analysis, transmission planning

Author(s): Aboutaleb Haddadi, Hossein Hooshyar
Type:PDF Presentation
Downloaded: 7
Date: 2022-07-21

Part 1 - Modeling the New York State Grid in EMTP861

Abstract
PART 1 - The New York state electric grid is transitioning to significantly higher shares of inverter-based resources (IBR) to achieve the clean energy goals of customers and the state. To address th... see moreis challenge, more detailed whole-system modelling in electromagnetic transient (EMT) domain has recently been used for system-level studies including long-term planning and IBR interconnection studies. Along the same line, an EMTP model of the New York State grid was developed and benchmarked in NYPA’s Advanced Grid Innovation Laboratory for Energy (AGILe). This presentation talks about the developed model and its use cases including interconnection studies for High-Voltage Direct Current (HVDC) and renewables.

Tag(s): inverter-based resources, interconnection studies, long-term planning, hvdc

Author(s): Aboutaleb Haddadi, Hossein Hooshyar
Type:PDF Presentation
Downloaded: 5
Date: 2022-07-21

Part 2 - Modeling the New York State Grid in EMTP862

Abstract
PART 2 -The New York state electric grid is transitioning to significantly higher shares of inverter-based resources (IBR) to achieve the clean energy goals of customers and the state. To address this... see more challenge, more detailed whole-system modelling in electromagnetic transient (EMT) domain has recently been used for system-level studies including long-term planning and IBR interconnection studies. Along the same line, an EMTP model of the New York State grid was developed and benchmarked in NYPA’s Advanced Grid Innovation Laboratory for Energy (AGILe). This presentation talks about the developed model and its use cases including interconnection studies for High-Voltage Direct Current (HVDC) and renewables.

Tag(s): inverter-based resources, interconnection studies, long-term planning, hvdc

Author(s): Willy Nzale, Victor Velar
Type:PDF Presentation
Downloaded: 4
Date: 2022-07-21

Automatic model parameter determination to fit IBR behavior864

Abstract
This presentation shows a tool developed in EMTP to automatically determine the optimal model settings to fit an IBR recorded behavior. The optimization process uses a particles swarm optimization alg... see moreorithm, which is an optimization technique used in artificial intelligence. The tool can estimate a mix of model parameter values.

Tag(s): optimization, inverter-based resources, particle swarm optimization, data fit, WECC model

Author(s): Husam Samkari & Rafael Castillo Sierra
Type:On-demand webinars
Date: 2022-02-17

Slideshow of the projects from our grand prize winners857

Abstract
During this webinar, our two winners of the EMTP® Research Contribution Prize Program 2021 will present their work. The aim of the award is to recognize student contributions to the technology associ... see moreated with power system transients. The two competition categories are:
- Best accepted IEEE, IET, PSCC, EPSR or IPST journal or conference paper on EMT simulations;
- Best EMTP® model developed.

Discover our winner and the topics of their presentation:

o Husam Samkari, Ph.D. and P.E. in Electrical Engineering
Impact of Distributed Inverter-Based Resources on Incremental Quantities-Based Protection

Abstract:
This paper studies the impact of distributed inverter-based resources (IBR) on time-domain incremental quantities-based relays. One implementation of the incremental quantities for protection is a high-speed sub-cycle directional element. The incremental, also known as superimposed, quantities are fault-generated instantaneous components of voltages and currents. The directional element indicates fault direction based on the transient voltages and currents’ relative polarities. It is essential to ensure that the element does not fail to indicate the correct direction if IBRs fault current responses impact the quantities. IBRs’ fast control response impacts the current quantities by changing both magnitude and angle.

This paper characterizes the incremental quantities-based relay response to IBRs’ nonlinear fault currents. A modified IEEE 34-bus distribution with an IBR system is modeled and simulated using the electromagnetic transients program (EMTP-RV) for demonstration.

o Rafael Castillo Sierra, Electrical Engineer, Ph.D. Student
Model category for his model on Power System with a Transmission Line operating at low frequency

Abstract:
The transmission of electric power with alternating current (AC) faces constraints that are inherent both to the stable operation of the power system and to the physical properties of the transmission lines or cables. Many factors stand to motivate the alleviation of these constraints without a need to construct new transmission lines or cables. One demonstrated method to accomplish this is to lower the electrical frequency of a transmission branch or section of the network, an approach known as low frequency AC (LFAC) transmission. The resulting lower reactance of the lines improves the transmission under the stability concerns which arise with long, inductive overhead lines, as well as under thermal concerns that can be substantial due to charging currents in underground cables. In this order of ideas, the Modular Multilevel Matrix Converter (MMMC) offers the necessary frequency conversion for low-frequency transmission, while allowing controllability of power through the transmission line.

For this reason, this presentation focuses on the EMTP modeling and simulation of this converter starting from a design that meets the typical voltage and power requirements for a transmission line. The averaged model of the converter has been implemented to evaluate its performance as a frequency converter and how it interacts with the power system. Simulations have been carried out under nominal operating conditions in a study case power system.

Tag(s): EMTP, Prize winners, IBR, Protection, Power system, Transmission Line, Low frequency,