Technical Presentations

EMTP Development Roadmap: Real-code DLL Interface828

Abstract
Real-code models/DLLs
- Exact copy of a real control implementation
- Original source code of a controler


Why use real-code DLLs in EMT simulations?
- Ultimate accurac... see morey (same code as onsite)
- Manufacturer's intellectual property is protected


Applications:
- Modeling of windfarms, PV farms, HVDC, exciters, etc.

Tag(s): DLL Interface, control implementation, EMT simulations

POWERGRID experience with EMTP793

Abstract
To meet the increasing power demand, a number of extra high voltage (EHV) transmission lines is being added to the power system network, which enhances the complexity of power system network. It is es... see moresential duty of power engineer to fulfill the growing demand ensuring the reliability, stability & security of GRID. Transient simulation tools like EMTP play a vital role to provide the flexibility to power engineer for simulating/studying the various case scenarios which couldn’t be simulate in physical power system.


Such tools eventually help power engineer to build a sustainable and secure GRID. In POWERGRID, being a central transmission utility, various studies are being carried out to arrive the technical particular of new transmission system and optimize or fine tuning of existing system. Some of them i.e. Transient Recovery Voltage (TRV) study of 1200kV Transmission network, Smart Power from insulated earth wire of EHV transmission line and 1200kV Transformer Inrush current study are discussed in presentation. 1200kV National Test Station was established & successfully charged along with the transmission line in state of BINA in India.


TRV study was carried out for assessment of various test duties of 1200kV Circuit Breaker. Presentation cover the detailed discussion of 1200kV TRV study and a brief about the facilities like HIL, HVDC control Replica setup, STATCOM replica setup available at Powergrid Advanced Research and Technology Centre (PARTeC).

HVDC grid protection algorithm based on fault parameter estimation786

Abstract
This presentation focuses on voltage and current sensors modelling and its application on a transient based protection algorithm within a 4-terminal HVDC grid simulated in EMTP.

Fully selec... see moretive protection strategies for meshed HVDC grids need very fast DC fault identification and isolation which constitutes one of the main locks for large deployment of such grids. Transient based fault identification algorithms based on the modelling of the voltage and current traveling waves are seen as a promising solution to achieve fast fault identification. In addition, such algorithms are able to estimate the fault parameters such as the fault distance using local sensor data.As a model based approach, the accuracy of the sensors may impact the fault identification results as well as the precision of the estimated fault parameters.

In depth sensitivity analysis for different parameters of the sensor are carried out to outline the influence of the sensor characteristics on the fault identification results as well as the accuracy on the estimated fault parameters.

Composite testing of HVDC-connected offshore wind farms in Great Britain778

Abstract
Transmission connections to offshore wind generation typically consist of multiple technologies supplied by different manufacturers with each tested at the factory, but with limited composite modellin... see moreg and testing of the combined system control and protection performance.

To start to address these technical challenges, the HVDC Centre with the support of ESO connections team commissioned the COMPOSITE project with RTE International to identify practical guidelines and best practices for composite testing and compliance of complex electricity connections, leveraging the experience we share across multi-vendor and multi-device testing we have delivered.

This joint webcast by HVDC Centre in collaboration with RTE International and EMTP® will describe key findings and lessons learned from the COMPOSITE project, including a demonstration of EMTP® modelling the composite models and their test cases.

Speakers:
- Benjamin Marshall – HVDC Technology Manager
- Dr. Oluwole Daniel Adeuyi - Simulation Engineer & Offshore Networks Lead
- Hani Saad - Power system expert engineer

Overview of EMTP capabilities and VLPT modeling 774

Abstract
This webinar presents the main features of the EMTP system and the tools designed for the study of high-voltage direct current (HVDC) lines. Examples of modeling the most important components of elect... see moreric power systems are discussed; how to perform flux-distribution calculations, simulate transients, and visualize and interpret calculation results are shown. The tools for modeling the HVDC are discussed using the Modular Multilevel Converter (MMC) analysis and will include: MMC modeling in EMTP, control and protection system analysis, and analysis of transient dynamics.

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