• 2023 EMTP User Conference

2023 EMTP International User Conference

2023 EMTP® International User Conference

Join us at the EMTP® International User Conference in Thessaloniki, Greece on June 16 and 19, 2023. With speakers coming from all around the world, this event promises to be an exciting opportunity to connect with professionals and learn about the latest advancements in power system transients.

  • On June 16, the conference will be both in-person and online, giving you the opportunity to connect with speakers directly.
  • On June 19, the conference will be held online.

Why should you attend the EMTP® User Conference?

  • Attend high-level technical presentations on power system transients.
  • Share your simulation problems and learn about the latest developments in EMTP® and power system transients in general.
  • Engage in thoughtful discussions with people from the same industry, research center, or university as you.

Preliminary Agenda

On-Site Conference | Thessaloniki, Greece

June 16, 2023

9:00 - 9:30 | Meet & Greet

The EMTP® development team is introduced, along with the program schedule and a brief history on EMTP® . Also, attendees will have the chance to learn about upcoming software developments, provide feedback to developers, request updated modules, features, and discuss EMTP-related issues.

Power transformers are susceptible to various types of overvoltages during their lifetime (e.g., switching, lighting VFTO), making it crucial to monitor these events in the power network. Transients recorders can now measure the voltages at the bushing measurement taps, and EMTP® can simulate the level of transferred overvoltages and checking the efficiency of installed overvoltage protection. The presentation will showcase different transformer models, including the extended BCTRAN model and the black-box model valudated using transferred overvoltages measured in a high voltage laboratory. The results of EMTP® simulations of the lightning overvoltages are presented and compared to the onsite measurements at power transformer terminals.
The presentation will last 30 minutes, followed by 15 minutes for Q&A.

10:45 - 11:00 | Coffee Break

To facilitate the integration of renewable energy, RTE must connect new substations where multiple onshore wind power plants are connected at a distribution voltage level. These substations can be connected to the transmission grid with long underground cables, which can lead to harmonic amplification issues. To compensate for the lack of data on the distribution level of wind generators, RTE developed generic harmonic models for conducting harmonic studies and sensitivity analysis. This presentation will focus on the wind farm models, sensitivity analysis models, and results related to understanding which parameters influence harmonic amplification factors.
The presentation will last 30 minutes, followed by 15 minutes for Q&A.

The Delta-connected STATCOM is regarded as the most advantageous topology for STATCOMs based on the Modular Multilevel Converter (MMC) technology. Embedding energy storage devices into the MMCs has gained significant research interest in recent years. This presentation focuses on modeling of MMC-based Delta-STATCOMs with embedded energy storage. A flexible modeling approach is proposed, which allows easy interfacing of various converter models with various energy storage device models. Four commonly used types of MMC models are applied to STATCOM modeling: detailed, detailed equivalent, arm equivalent, and average value. Supercapacitors and batteries are used as energy storage devices. Dynamic performances of the models are compared in transient simulation cases using EMTP.

12:30 - 14:00 | Lunch

In this presentation the modelling of earth conduction effects on the steady-state and electromagnetic transient (EMT) analysis of aboveground pipelines caused by nearby OHLs is presented by using EMTP.
The presentation will last 30 minutes, followed by 15 minutes for Q&A.

In this presentation three single-core cables with 630 mm2 copper conductors and lead sheathed cores, being in trefoil touching formation, are simulated through EMTP® and evaluated against experimental measurements. Both solid- and single-point sheath bonding configurations are considered. The standing voltages and circulating currents induced in the metallic sheaths are measured and compared against EMTP®. Positive-sequence impedance and loss results are also considered. As demonstrated, significantly better agreement between theoretical and experimental results occur when proximity effects are considered in EMTP®.
The presentation will last 30 minutes, followed by 15 minutes for Q&A.

15:30 - 15:45 | Coffee Break

The accurate modelling of underground cable systems and specifically of sheath bonding designs in system studies is very important. In this presentation different modelling issues regarding the calculation of sheath currents and voltages at power frequency in power cable systems is systematically investigated. Different bonding schemes are considered, i.e., single-point bonding, solid bonding and cross-bonding, and a parametric steady-state analysis is presented using EMTP®. The results of the investigations reveal some important issues regarding the accurate modelling of the underground power cable systems.
The presentation will last 30 minutes, followed by 15 minutes for Q&A

Online Conference

June 19, 2023

9:00 - 9:15 | Meet & Greet

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, 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.

EHV cables have higher capacitance and a larger current, which increases the possibility of overvoltage occurrences during the charging. A 400kV EHV cable experienced a long-duration overvoltage incident that damaged the Lightning Arrestor. The incident was analyzed using EMTP®, and mitigation methods for cable charging were proposed. The EMTP simulation and site relay measurements matched closely. The presentation will share the analysis results and mitigation methods.

10:45 - 11:00 | Break

Battery technology and power electronic converters have facilitated the widespread use of Electric Vehicles (EVs), resulting in reduced rotational inertia and frequency stability of the power system. To address this issue, grid frequency support must be provided through various methods, including the regulation of power exchange between the grid and grid-tied inverter. Virtual inertia can be obtained from the energy stored in the DC link capacitors of the grid-tied VSC and the battery charging points. Coordinated droop control strategies from the VSC and EV charging ports can provide frequency support to the grid during disturbances. This session will discuss the use of EMTP® simulations to develop coordinated droop control strategies for mitigating frequency stability issues.

Synchronous generators are exposed to oscillatory stresses due to their proximity to statcom devices and other power electronics devices, such as FSCs, HVDC controllers, and STATCOMs, which generate sub-harmonic frequencies. The interaction between sub-harmonic frequency components and mechanical mass can lead to Sub-Synchronous Resonance (SSR), an unstable and dangerous condition that causes torsional oscillation in the turbine generator shaft. This can reduce machine life, cause fatigue and damage to the shaft, and even result in its breakage. To avoid this, SSR detection/protection should be installed in generator units close to series compensated transmission lines. Different SSR modes can occur depending on the network condition and degree of compensation provided. Comprehensive Torsional Vibration Monitoring & Analysis systems are expensive, but there are cost-effective solutions to sense sub-harmonic quantities reliably at low amplitudes based on desired magnitude of sub-synchronous voltage and/or current. The offered solutions are supported by simulations, studies, modeling, and detailed analysis carried out in EMTP®.

12:30 - 14:00 | Lunch Break

In this work, the standard model for wind power generation systems based on the international standard IEC 61400-27-1 (Edition 2.0, 2020) was implemented in EMTP®. Its validation has been carried out in a test system with respect to a validated RMS model of a wind farm in Chile.

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 kV 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.

Lightning is one of the main electric hazards a photovoltaic is subjected to. This is due to the large collection area of the plant itself and to the incoming electric lines connected to the plant. The main purpose of this paper is to investigate in what cases LV/MV step-up transformers of the PV farm must be protected against overvoltages after a potential lightning strike event. This paper stabilises the lightning assessment simulation process by implementing a computer-based model in EMTP® based on the real engineering design of a 9MW PV plant connected to a 23 kV distribution grid in Chile.


Porto Palace Hotel Thessaloniki
26is Oktovriou 65
Thessaloniki, Greece

Porto Palace Hotel location, Thessaloniki, Greece