Edge security in smart inverters: Physical invariants based approach

The endeavour towards making power distribution systems (PDSs) smarter has made the interdependence on communication network indispensable. Further, prospective high penetration of intermittent renewable energy sources in the form of distributed energy resources (DERs) has resulted in the necessity for smart controllers on such DERs. Inverters...

Governance of shallow geothermal energy resources

Successful electrification of cities' heating and cooling demands depends on the sustainable implementation of highly efficient ground source heat pumps (GSHP). During the last decade, the use of shallow geothermal energy (SGE) resources in urban areas has experienced an unprecedented boost which nowadays is still showing a steady 9% market...

A Single-Level Rule-Based Model Predictive Control Approach for Energy Management of Grid-Connected Microgrids

A single-level rule-based model predictive control (RBMPC) scheme is presented for optimizing the energy management of a grid-connected microgrid composed of local production units, renewable energy sources, local loads, and several types of energy storage systems (ESSs). The single-level controller uses two different models that yield different...

Exploratory visual analytics for the european single intra-day coupled electricity market

European single intra-day coupled electricity market (SIDC) trading activity has increased substantially in recent years mainly as a consequence of the increasing penetration of renewable energy production and its subsequent impact on imbalance market prices. Nonetheless, more research is needed to understand this growing market. This paper...

Validation of a robust neural real-time voltage estimator for active distribution grids on field data

The installation of measurements in distribution grids enables the development of data driven methods for the power system. However, these methods have to be validated in order to understand the limitations and capabilities for their use. This paper presents a systematic validation of a neural network approach for voltage estimation in active...

Integrating demand flexibility with distributed generation - Renewable energy sources (DG-RES) at the residential household and commercial customer level in electricity grids

Commercial and operational use of residential and commercial user demand-side flexibility in energy grids will play an important but, as yet, not disclosed role in realising the required increase in the penetration of DG-RES. An increased embedding potential is needed to satisfy ambitious energy efficiency and carbon dioxide emission targets....

Risk assessment of aggregated flexibility usage for optimal multi-market trade

With the supply mix evolving to incorporate more and more uncontrollable renewable energy sources there is a need for more storage and demand response solutions. Aggregated demand response flexibility has been investigated in the past years as one of the potential solution this problem. This paper will investigate the potential impact on risks...

DREAM: An ICT architecture framework for heterarchical coordination in power systems

Agent based techniques are used to coordinate demand and supply for increasing the embedding capacity of dispersed, badly predictable, renewable energy based power systems. VPPs (Virtual Power Plants) using this technology have demonstrated their feasibility in field tests and currently are scaled up to satisfy requirements for massive rollout ...

Innovative approach for risk assessment in green field geothermal project

At present, the worldwide geothermal energy production provides less than 1% of the world's energy needs but the geothermal resources confined in the first 6 km of the earth's crust are estimated to be in the fairly above 200 GW of which 50-80 GW are located in Europe. Exploring and developing at large scale untapped hydrothermal resources...

Workshops in Dutch sustainable building design practice

Within the present context of the Dutch Sustainable Building Practice it is hard for the different involved building design disciplines to give a good answer to sustainability. Especially this is the case for the application solar energy either in passive or active form. As traditional methods did not work out adequately a new approach within...

Seismic characterisation for geothermal energy prospecting

The city of The Hague intends to use geothermal energy to heat approx. 4000 houses in a planned urban development area called The Hague South-West. This paper describes the application of advanced seismic interpretation workflows to help positioning a geothermal doublet consisting of one injector - and one producer well. An existing 3D seismic...

ThermoGIS: An integrated web-based information system for geothermal exploration and governmental decision support for mature oil and gas basins

In the recent years the use of geothermal energy through implementation of low enthalpy geothermal production systems for both electricity and heating have been growing rapidly in north-western Europe. Geothermal exploration and production takes largely place in sedimentary basins at depths from 2 to 5 km. Geothermal activities can take...

Diffusion paths for micro cogeneration using hydrogen in the Netherlands

We estimate the diffusion of micro cogeneration systems (MiCoGen) using hydrogen produced from natural gas in the Netherlands for the 2000-2050 period on the basis of economical factors. The diffusion is important for the transition to a hydrogen economy based on renewables, with natural gas paving the way for hydrogen from renewables. For three...

Towards an Optimum Design of Energy Supply Systems

TNO-MEP developed and implemented an analysis method in a software tool called ODESSY. One of the major breakthroughs of the method is that it not only calculates possible energy saving achievements, but it will also generate an optimized heat exchanger network (HEN), including the positioning of heat pumps and CHP/utility heaters. The resulting...