
About
213
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Introduction
Design sustainable electric power grids for renewable energy to enhance the connectivity of the renewable sources as well as loads. Simulation, validation, feasibility evaluation, and cyber-physical integration are the key methods used in my research.
Skills and Expertise
Additional affiliations
January 2020 - January 2021
Ørsted
Position
- Systems Engineer
June 2019 - present
March 2006 - August 2008
Publications
Publications (213)
Electricity distribution cable networks suffer from incomplete and unbalanced data, hindering the effectiveness of machine learning models for predictive maintenance and reliability evaluation. Features such as the installation date of the cables are frequently missing. To address data scarcity, this study investigates the application of Variationa...
Throughout the past few years, various transmission system operators (TSOs) and research institutes have defined several functional specifications for grid-forming (GFM) converters via grid codes, white papers, and technical documents. These institutes and organisations also proposed testing requirements for general inverter-based resources (IBRs)...
The validation of Electromagnetic Transients (EMT) models is essential for ensuring the accuracy of grid compliance and stability studies. However, there is still room for improvement in understanding the processes and a lack of standards for EMT model validation, especially after the commissioning of a wind power plant. This paper addresses this g...
This paper proposes a collaborative learning framework based on vertical federated learning for detecting false data injection attacks in distribution networks. The proposed framework empowers entities that are responsible for a sub-network to collaboratively construct an FDIA detection model, effectively addressing issues associated with data shar...
The distribution grid is evolving into a multilateral cyber-physical system where efficient data sharing and management across stakeholders are fundamental. Consequently, many applications benefit from collecting data from decentralised sources, as in the case of data-driven reliability prediction of medium-voltage cables, where distribution grid o...
The digitalization of the power distribution grid has surged over the past decade. This transformation has given rise to a host of new data-driven applications focused on condition monitoring and predictive maintenance. However, from the perspective of the distribution system operator, there remains uncertainty about what and how digital maintenanc...
Throughout the past few years, various transmission system operators (TSOs) and research institutes have defined several functional specifications for grid-forming (GFM) converters via grid codes, white papers, and technical documents. These institutes and organisations also proposed testing requirements for general inverter-based resources (IBRs)...
As the proportion of converter-interfaced renewable energy resources in the power system is increasing, the strength of the power grid at the connection point of wind turbine generators (WTGs) is gradually weakening. Existing research has shown that when connected with the weak grid, the stability of the traditional grid-following controlled conver...
The rapid expansion of wind power needs increased efforts in establishing rules for connecting wind power plants (WPPs) through grid codes and standards. This makes grid compliance testing and model validation more complex for wind turbine generator (WTG) manufacturers and WPP developers. This paper explores various challenges and solutions within...
Synchronous condensers (SCs) play important roles in integrating wind energy into relatively weak power grids. However, the design of SCs usually depends on specific application requirements and may not be adaptive enough to the frequently-changing grid conditions caused by the transition from conventional to renewable power generation. This paper...
Grid-forming (GFM) converter control technology and synchronous condensers (SCs) have both been reported to improve the overall stability of a power system. GFM technology is being considered for offshore wind power plants (OF WPPs) due to their stabilising effect, and SCs are being integrated into OF WPPs as they increase the short circuit level o...
Ultra-short-term probabilistic wind power forecasting provides paramount uncertainty information for power system real-time operation. However, the stochastic dynamics of wind power generation are not well clarified in existing studies. To transcend such a research barrier, a nonparametric stochastic differential equation (NSDE) combined with deep...
When grid-forming (GFM) inverter-based resources (IBRs) face severe grid disturbances (e.g., short-circuit faults), the current limitation mechanism may be triggered. Consequently, the GFM IBRs enter the current-saturation mode, inducing nonlinear dynamical behaviors and posing great challenges to the post-disturbance transient angle stability. Thi...
Ensuring the reliability and efficiency of electricity distribution networks requires a proactive framework that ef-fectively manages and mitigates the risks associated with grid component failures. The Common Network Assets Methodology (CNAIM), widely used for regulation in the United Kingdom, stands as a state-of-the-art example of integrating Co...
The modernisation of medium voltage cable systems must be prioritised effectively. Fortunately, there exist methods which can rank cables by health and thus schedule investments properly. Thereby, many approaches benefit greatly from historical failure data. However, if available, failure records rarely include all required features, such as cable...
Grid-forming control (GFC) has seen numerous technological advances in their control types, applications, and the multitude of services they provide. Some examples of the services they provide include black start, inertial frequency response, and islanded operation capabilities with the possibility of re-synchronization without the need of addition...
As the integration of renewable energy generation increases and as conventional generation is phased out, there is a gradual decline in the grid's strength and resilience at the connection point of wind turbines (WTs). Previous studies have shown that traditional grid-following controlled converters exhibit deteriorating dynamic characteristics and...
The main aging and failure drivers of medium voltage cables are known. However, the distribution grid's enormous number of cables makes it difficult to determine the status of each cable section individually. Machine learning approaches to predict the reliability of medium voltage cables are promising, but often use non-standard features. As a resu...
Through Royal Decree 1125/2021, issued on December 21, the Spanish government has regulated the granting of direct subsidies to electricity distribution companies for digitalization investments in their networks and electric vehicle charging infrastructure, funded by the Recovery, Transformation, and Resilience Plan (PRTR). In collaboration with Fe...
As the proportion of converter-interfaced renewable energy resources in the power system is increasing, the strength of the power grid at the connection point of wind turbine generators (WTGs) is gradually weakening. Existing research has shown that when connected with the weak grid, the dynamic characteristics of the traditional grid-following con...
As the number of converter-based renewable generations in the power system is increasing, the inertia provided by the synchronous generators is reducing, which in turn is reducing the stability margins of the power system. In order to assess the large-signal stability, it is essential to model the wind power plant connections accurately. However, t...
Modernización de las redes de distribución eléctrica en España. Evaluación de los beneficios de la digitalización en el contexto del Plan de Recuperación, Transformación y Resiliencia JOSE ANGEL LEIVA VILAPLANA Estudios sobre la Economía Española 2023/21 Junio de 2023 fedea Las opiniones recogidas en este documento son las de sus autores y no coinc...
This work investigates the efficiency of Travelling Wave (TW) based fault detection and locationing for multi-sectional cross-bonded export cable for offshore wind farm applications. The cables, instrument transformers and the offshore wind farm are modelled according to the TW method and practical conditions. In order to correctly reflect the offs...
Short circuit ratio is an outdated measure of system strength in converter dominated systems as the useful behaviour of inverter-based resources is not represented. While still useful for determining fault current provision, converter connected generation contributes to short circuit level and system strength in a different way to traditional synch...
The calculation of short-circuit current contributions from full-converter based type IV wind turbines and other inverter-based power plants are often simplified. They are represented as simple fixed current sources for the steady-state stage of the fault during short-circuit evaluations. As wind power penetration increases, it becomes increasingly...
There is a rapid increase in the installed capacity of offshore wind power plants (WPPs) worldwide, and the trend will continue in the context of the recent EU energy crisis and the Ukraine war. As the share of the capacity of wind power plants increases in power systems, it is essential that WPPs can stay connected with the grid during different o...
As wind and solar power penetration increases, more and more conventional power plants are being replaced; as a result, the nature of transient stability of the system evolves where the converter’s behaviour play dominating role during network events. This has necessitated a re-assessment of the nonlinear stability of the system. So far, the energy...
Rapid renewable energy sources (RESs) deployments in transmission and distribution networks have changed power systems’ operation and control mechanisms. This fundamental shift makes the interaction between transmission and distribution systems more sensitive and requires robust TSO–DSO coordination to ensure system stability and ancillary services...
Over the last decade, the rapid growth of wind power is driving an increase of efforts in defining the frameworks and rules for the connection of wind power plants (WPPs) through the grid codes and standards, making testing/validation more demanding and complex for wind turbine (WT) manufacturers and WPP developers. Traditionally, WT manufacturers...
This paper proposes an intelligent control scheme for a two-stage integrated onboard electric vehicle (EV) battery charger connected to a single-phase household outlet which offers a close to ideal battery charging profile with power factor correction feature. Generally, the front-end AC-DC conversion stage is controlled by dual loop proportional-i...
This paper presents a comprehensive evaluation of the HVDC system's impact on distance protection via systematic and realistic experimental tests, along with theoretical analysis of the root causes of the identified compromised protection performance. A methodology for quantifying the impact of Synchronous Compensation (SC) in supporting the distan...
As extreme weather events have become more frequent in recent years, improving the resilience and reliability of power systems has become an important problem. In this paper, a robust preventive-corrective security-constrained optimal power flow (RO-PCSCOPF) model is proposed to improve power system reliability under N-k outages. Both the short-ter...
The rapid growth of microgrids with various distributed energy resources (DERs) brings new opportunities for local energy sharing in the microgrids. However, the uncertainties of renewable distributed generation and loads pose a great technical challenge for a microgrid operator (MGO). Thus, this paper proposes a transactive energy sharing (TES) ap...
The decreasing cost of solar photovoltaics (PVs) and battery storage systems is driving their adoption in the residential distribution system, where more consumers are becoming prosumers. Accompanying this trend is the potential roll-out of home energy management systems (HEMSs), which provide a means for prosumers to respond to externalities such...
Management of electric power balance requires accurate forecasting of load and generation, especially in the context of renewable energy adoption. In this context, forecasting electric load requires more attention to decrease the uncertainties in the system operation. There have been many studies under this context, however, the effect of the lookb...
Inflexible combined heat and power (CHP) plants and uncertain wind power production result in excess power in distribution networks, which leads to inverse power flow challenging grid operations. Power-to-X facilities such as electrolysers and electric boilers can offer extra flexibility to the integrated energy system. In this regard, we aim to jo...
This paper presents a novel approach for realizing coordinated control of Distributed Energy Resources (DERs) based on cloud-hosted and edge-hosted digital twins (DTs) of DERs. DERs are playing an increasingly important role in supporting the frequency regulation of power systems with massive integration of renewable resources. However, due to the...
Offshore wind power has been developed in Europe for nearly 30 years. Nowadays, it has been developed into one of the most important sources of renewable energy generation, and occupies strategical importance in future renewable energy planning and adoption. Offshore wind farms start their journey in several European countries including Denmark, Br...
There is an ongoing trend of reduction in short circuit power at the grid connection point due to the decommissioning of synchronous generation plants causing system strength issues in wind power plants. Whereas wind power plant rating and export cable length are increasing, further weakening the system strength and accompanied by stability challen...
There is an ongoing trend of reduction in short circuit power at the grid connection point due to decommissioning of synchronous generation plants causing system strength issues in wind power plants. Whereas wind power plant rating and export cable length are increasing, further weakening the system strength and accompanied by stability challenges....
Research on enhancing power system resilience against extreme events is attracting significant attention and becoming a top global agenda. In this paper, a preventive augmented power dispatch model is proposed to provide a resilient operation. In the proposed model, a new N-1-1 security criterion is proposed to select disruptive N-1-1 contingency c...
Recently, the penetration of renewable energy sources (RESs) into electrical power systems is witnessing a large attention due to their inexhaustibility, environmental benefits, storage capabilities, lower maintenance and stronger economy, etc. Among these RESs, offshore wind power plants (OWPP) are ones of the most widespread power plants that hav...
Electric vehicle batteries can be a flexible resource for providing regulation reserves in ancillary service markets. But uncertainty exists both in EVs’ charging behavior and system’s real-time regulation demand, which may cause the deficiency of regulation power of EVs, thus lowering the performance in ancillary service provision. Based on histor...
—Grid forming control applied to power converters which interface storage or renewable generation to the power grid, has been identified as a potential solution to facilitate a substantial share of converter-based renewable generation in the power system. Analyzing the response of grid forming converters (GFC) for large frequency, phase, and voltag...
The converter control functions to provide the capabilities similar to synchronous generators are referred to as grid forming converters (GFC). Identical to a synchronous machine, a grid forming converter is expected to behave as a voltage source behind an impedance beyond the control bandwidth. However, GFC's realization has been different, with s...
With the growth of intermittent renewable energy generation in power grids, there is an increasing demand for controllable resources to be deployed to guarantee power quality and frequency stability. The flexibility of demand response (DR) resources has become a valuable solution to this problem. However, existing research indicates that problems o...
As typical prosumers, commercial buildings equipped with electric vehicle (EV) charging piles and solar photovoltaic panels require an effective energy management method. However, the conventional optimization-model-based building energy management system faces significant challenges regarding prediction and calculation in online execution. To addr...
In a grid-connected power converter, synchronizing with ac grid voltage is often realized by a phase-locked loop (PLL). A single input single output linear model of PLL with the phase angle of the point of common coupling (PCC) voltage as input and the estimated phase angle as the output is generally used in the PLL analysis and design. However, an...