At Elpow, we specialize in providing comprehensive power systems modeling, simulation, and analysis services tailored to our client’s unique needs. With our expertise in this field, we offer a range of solutions that empower businesses to optimize their power systems, enhance reliability, and achieve cost-effective operations.

Our highly skilled engineers and domain experts utilize cutting-edge software tools and advanced modeling techniques to deliver accurate and insightful analyses. Whether you require load flow studies, transient stability analysis, voltage regulation assessments, or any other aspect of power systems analysis, we have the knowledge and capabilities to assist you.

Through our modeling and simulation services, we can help you identify potential bottlenecks, evaluate system performance under various conditions, and make informed decisions regarding infrastructure upgrades, capacity planning, and energy efficiency improvements. By leveraging our expertise, you can enhance the reliability and resilience of your power systems, reduce downtime risks, and optimize resource allocation.

Moreover, our analysis services go beyond technical evaluations. We provide comprehensive reports and actionable recommendations that enable you to make informed decisions and prioritize investments effectively. Whether you are a utility company, industrial facility, renewable energy provider, or any organization reliant on power systems, our services can be tailored to your specific requirements.

Partnering with us for power systems modeling, simulation, and analysis brings numerous benefits. You gain access to a team of experts with deep knowledge of power systems engineering, cutting-edge tools, and a commitment to delivering high-quality results. Our efficient and streamlined approach ensures the timely completion of projects, allowing you to make critical decisions without delays.

At Elpow, we are dedicated to providing top-notch power systems modeling, simulation, and analysis services that drive our client’s operational efficiency, reliability, and cost-effectiveness. Let us help you unlock the full potential of your power systems and navigate the complex landscape of energy management. Contact us today to discuss your specific needs and embark on a journey toward optimized power system performance.

In today’s world, programming has become an essential skill that empowers individuals to tackle complex analysis tasks. As power system engineers, we not only possess expertise in our field but also share a deep enthusiasm for programming, creating a powerful synergy. Leveraging this combination, we have successfully developed numerous software tools catering to a wide range of applications such as conventional and stochastic load flow, time-domain simulations, power system stabilizer tuning, small-signal stability analysis, subsynchronous resonance analysis, grid code compliance studies, etc. These software tools have primarily been developed in response to the specific needs of our valued industrial partners, who have entrusted us with their orders.

Many projects often necessitate integrating custom-designed models into simulation software for various types of power equipment. These models are tailored to match specific features and characteristics provided by equipment vendors. Such models include excitation systems, generators, power converters, controllers, and turbine governors. Our organization has extensive expertise in implementing these models using PowerFactory, Matlab/Simulink, ATP-Draw, and Python.

Additionally, certain power system stability analyses require linearized models. We are well-equipped to provide this service as well.

Grid code compliance of power generation is paramount in ensuring power systems’ reliable and efficient operation. Through rigorous grid code simulation studies, advanced software tools are employed to thoroughly assess and evaluate the adherence of power generation facilities to grid codes and regulations. These studies involve meticulous analysis of various scenarios, including fault events, frequency deviations, and voltage fluctuations, to gauge the performance and stability of the power generator. By focusing on grid code compliance, power system engineers and operators can identify potential issues, optimize system parameters, and implement necessary measures to guarantee grid stability, facilitate seamless integration of renewable energy sources, and uphold the overall reliability of the grid.

By far, we have assessed several power plant projects for compliance with the respective national grid codes (Belgium, Estonia, UK, Ireland, Romania, and others).

Power system stability studies play a crucial role in ensuring the reliable and secure operation of electrical grids. These studies employ advanced analytical techniques and simulation tools to assess the stability of power systems under different operating conditions and disturbances. By analyzing factors such as generator dynamics, control systems, and network behavior, stability studies evaluate the ability of the power system to maintain steady operation and recover from disturbances. They identify potential stability issues, such as oscillations or voltage instabilities, and propose appropriate control and protection measures to enhance system stability. Power system stability studies are essential for ensuring the resilience and uninterrupted supply of electricity to consumers.

With our expertise spanning from analyzing the stability of individual machines to evaluating the stability of entire power systems, we are well-equipped to address a wide range of stability challenges. Whether it’s assessing the dynamic behavior of a specific generator or ensuring the reliable operation of complex interconnected grids, our experienced team can provide comprehensive solutions tailored to your specific needs. Contact us today to discuss how our power system stability analysis services can help enhance the reliability and performance of your electrical infrastructure.

The rotor angle stability of synchronous generators is maintained through the use of Power System Stabilizers (PSS). Acting as supplementary controllers to the excitation system, PSSs play a crucial role in modulating the electromagnetic torque to dampen the inherent electromechanical oscillations that disrupt the rotor speed. By precisely optimizing the PSS parameters, its robust operation can be ensured across the entire operating range of the generator. Conversely, suboptimal PSS settings can significantly compromise the stability of the synchronous machine. Therefore, high-quality parameter tuning is crucial for power plants.

Elpow’s team boasts extensive expertise in developing software for the optimal tuning of power system stabilizers. We have successfully served esteemed customers such as ESO EAD, General Electric, Siemens PTI, and Siemens-Energy. Our track record includes optimizing PSSs in numerous countries, including Bulgaria, Turkey, Australia, Saudi Arabia, Estonia, Belgium, and more.

Subsynchronous resonance (SSR) is a power system phenomenon characterized by interactions between synchronous generators and series-compensated transmission lines. It occurs when the mechanical oscillations of a turbine-generator system resonate with the electrical oscillations in the power system caused by the series compensation. This resonance can lead to harmful torsional vibrations and potentially costly damage to the generator. Effective mitigation strategies, such as power oscillation damping controllers and system design considerations, are employed to minimize the impact of SSR and ensure the stable operation of the power system.

At Elpow, we have developed a software frequency scanning tool to screen power plants for potentially dangerous SSR interactions. If an issue is detected, we perform a more in-depth analysis based on electromagnetic transient simulations and modal analysis.

Elpow is equipped to offer harmonic analysis in power systems. This is the process of studying and evaluating the presence and effects of harmonic currents and voltages. Harmonics are unwanted periodic distortions of the sinusoidal waveforms in the power system caused by non-linear loads. Through harmonic analysis, the amplitude, frequency, and phase relationships of these harmonics are examined to identify potential issues such as voltage distortion, unwanted resonance, equipment overheating, and communication interference. This analysis helps in designing appropriate mitigation measures, such as harmonic filters and proper load planning, to ensure the reliable and efficient operation of power systems.

Ph.D. dissertations of Elpow team members are dedicated to the field of insulation coordination. In the context of electric power systems, this term refers to the systematic design and selection of insulation materials and electrical equipment to ensure reliable and safe operation in the presence of overvoltages. Overvoltages can occur due to lightning strikes, switching circuit breakers, or other transient events. Insulation coordination involves determining appropriate insulation levels, surge protective devices, and insulation clearances to withstand these overvoltages without causing insulation breakdown or equipment failure. It also considers factors such as insulation aging, environmental conditions, and system reliability. Proper insulation coordination is vital for maintaining the integrity and longevity of power system components and minimizing the risk of electrical failures and outages.

We specialize in providing our clients with comprehensive electromagnetic transient simulation studies, utilizing state-of-the-art tools and expertise. These simulations are designed to analyze the system’s response to fast transients, such as those caused by lightning strikes and electric circuit commutation. By conducting these simulations, we can assess various critical factors, including the required insulation level of power equipment, the surge arresters’ energy withstand capability, the recovery voltage characteristics of circuit breakers, and much more. The insights derived from these simulations enable informed decision-making and help ensure the reliability and safety of power systems.

High-voltage cables pose unique technical challenges compared to overhead power lines. They require extensive insulation, adding complexity and cost to their design and installation. Additionally, high-voltage cables experience higher electrical losses, limiting their efficiency compared to overhead lines. Thermal constraints further limit their current carrying capacity, necessitating effective heat dissipation. However, high-voltage cables offer a viable solution in scenarios where overhead power lines are impractical or undesirable, such as urban areas or environmentally sensitive locations.

At our company, we specialize in high voltage cable solutions and provide expert consultation on their implementation. We work closely with clients to understand their requirements and offer tailored recommendations. Additionally, we conduct thorough studies to assess the impact of high-voltage cable implementation on power systems. Our expertise, backed by Ph.D. thesis studies and practical experience, helps clients make informed decisions regarding the integration of high-voltage cables, ensuring optimal performance and system reliability.

Our comprehensive feasibility studies provide you with the most up-to-date insights on cutting-edge technologies, industry best practices, and optimal solutions for designing and constructing photovoltaic power plants. With a thorough comparison of available technologies and the most popular PV power plant types, we estimate the potential installed power while considering the varying electricity production costs. Our expert analysis guides investors towards optimal design choices aligned with their expected business models for trading the generated electricity, ultimately ensuring the desired return on investments.

Stay ahead of the curve in the dynamic world of photovoltaics. Our feasibility studies empower you with the knowledge and strategic guidance needed to navigate the ever-evolving landscape, unlocking the full potential of your photovoltaic projects. Contact us today to embark on a brighter, more sustainable future.

Grid development and expansion planning consultancy services are crucial in the realm of electric power systems. These services focus on optimizing and enhancing the electrical infrastructure to meet the growing demands of society while ensuring reliability and sustainability. Our expert consultants analyze the current grid, identify bottlenecks, and propose efficient solutions for system expansion. They assess renewable energy integration, smart grid technologies, and storage options to promote clean energy adoption. Furthermore, they consider load forecasting, economic factors, and regulatory requirements in their recommendations. Ultimately, these consultancy services play a pivotal role in shaping a resilient and adaptive grid, driving the electrification of economies and paving the way for a greener future.

We are proud the be licensed with DIgSILENT’s PowerFactory (LINK) comprehensive simulation software. PowerFactory is a leading power system analysis software application for use in analyzing generation, transmission, distribution, and industrial systems. It covers the full range of functionality from standard features to highly sophisticated and advanced applications, including wind power, distributed generation, real-time simulation, and performance monitoring for system testing and supervision. With its flexibility for scripting and interfacing, PowerFactory is perfectly suited to highly automated and integrated solutions. Our experts are quite experienced in using PowerFactory’ Python scripting capabilities, which adds incredible flexibility to perform complex and computationally intensive analysis.

Our experts are experienced ATP-EMTP (LINK) engineers. This world-renowned software covers the whole range of transients, from lightning and switching studies to temporary overvoltages and sub-synchronous resonance. It has steady-state initialization, good multi-conductor analysis support, and powerful MODELS scripting.

Much of our research was performed using Matlab and Simulink (LINK). For our academic work, we have developed several toolboxes and various Simulink models. This software (and programming environment) is one of the best in the world for quick prototyping and is thus widely used in the industry and academia.

Several of our projects were performed using Siemens PTI’s PSS/E (LINK). This is a simulation software dedicated to studying the transient stability of power systems. Our experts are quite experienced in using PSS/E’s Python API, which adds incredible flexibility to perform complex and computationally intensive analysis.

Besides these third-party software products, we have developed in-house software tools to support our work. We use these tools to analyze the stability of power plants, tune power system stabilizers, analyze the performance of excitation systems, screen for subsynchronous resonance issues, and execute grid code compliance tests.

Our team includes fully licensed professionals certified by the Chamber of Engineers in Investment Design in Bulgaria. With our expertise, we offer comprehensive electrical design services for a wide range of installations, including transformer stations, switchgear, electrical systems, power lines, street lighting, and others. Trust us to deliver reliable and optimized designs that meet industry standards.