Technical Presentations

Dynamic EMT Models Homologation - Usage and Projection898

Abstract
Since 2022, the National Electric Coordinator in Chile has requested standardization of the dynamic models of the power plants or parks connected to the National Electrical System (SEN). As a company ... see more(EEMT), we have participated in the development of dynamic models for various wind and photovoltaic parks, carrying out a series of EMT homologations, both for equivalent and complete models. This involves analyzing their operation and validating them through records. Once this process is completed, it is possible to conduct tests and systemic verifications on the model, performing different short circuits and analyzing the LVRT. Thanks to the development and homologations of these models, in their complete and equivalent stages, different analyses can be carried out where electromagnetic phenomena exist for complete models, while with the equivalent models analyses can be carried out in a delimited area, generating faults and comparing them with real cases that have occurred. Within the framework of this conference, EEMT wants to present what the development of the homologation of these models has meant, the results that have been obtained in their different stages, and the usage that can be given to them for the performance of different analyses. On the other hand, as a consulting firm, we have been developing our own model of the Chilean National Electrical System based on various studies and based on the experience we have acquired as a leading consulting in EMT models. With the progress of homologations and the development of EMT models, it is expected that in the future there will be a systemic Database of the SEN that contains a greater number of aggregated models and that reliably allows for a large scale systemic analysis, such as, failures in the 500 kV transmission line, among other phenomena.

Tag(s): Wind Power Photovoltaic Systems, EMT Homologations, Chilean National Electrical System

Wide-area EMT simulation of Colombian Power system with high inverter-based-resources penetration and weak SCR network900

Abstract
This presentation will focus on a specific issue of bipolar HVDC lines with a dedicated metallic return (DMR). DMR is insulated to a lower level than the pole and its insulators are shorter. One event... see more, for example, pole-to-ground-fault will cause a fault on both the pole insulation and the DMR insulation simultaneously because the DMR insulation fault will be supported by the DC current and will turn into a DC arc. To ensure independent pole operation, these types of events should be avoided or, if the DMR does flashover, to extinguish the fault as soon as possible. This is phenomena are presented and how different solutions are tested with EMTP software to protect the DMR.

Tag(s): Colombian Power System, EMT Model, Solar Power, Wind Power

Technical Feasibility of the BESS Grid Booster Project for Integrating More VRE Into the Chilean Power Grid891

Abstract
The study analyzes the technical feasibility of the BESS Grid Booster project in an EMT simulation environment. A detailed EMT model of the Chilean power system was developed for the main 500 and 220 ... see morekV transmission systems. Most of the dynamic models for VRE generators used the AVM models from the EMTP® library. The study also included critical FACTS devices and all series compensation in the main transmission lines.

Tag(s): FACTS, Transmission Lines, EMT Simulations

Experiences in modeling PV plants for grid operators. What is next?865

Abstract
This presentation shows a summary of EMT modelling experiences of PV power plants according to different grid operator requirements. Depending on the study that is demanded, aggregated or disaggregate... see mored representation is needed to characterize the internal network, a simplified method for obtaining an electric equivalent is presented.

Tag(s): PV power plant, average value model, PLL model, power oscillation, voltage oscillation

A new resource is available to explain step-by-step how to create a DLL in EMTP.776

Abstract
A new step-by-step resource is available to explain how to create a DLL in EMTP®.

The DLL (Dynamic Link Library) function is designed to allow EMTP® users to develop advanced program mode... see morel modules and interface them directly and intimately with the EMTP® engine. It is for advanced users and offers advanced capabilities.

Users interested in programming language-based model development should use this feature to develop and maintain models. Such models can be placed in a specified location, attached to a device with graphical user interface features in EMTPWorks and maintained in a library just as any other built-in EMTP model.

This option may be used by converter manufacturers to interface real code into EMTP®, to perform Software In the Loop.

For this purpose, EMTP® is also compatible with the Joint IEEE TASS Task Force and CIGRE B4.82 Working Group “USE OF REAL-CODE IN EMT MODELS FOR POWER SYSTEM ANALYSIS”.