The importance of accurate transmission system model for cross-border exchange of balancing energy

2016 ◽  
Author(s):  
Iason Avramiotis-Falireas ◽  
Haoyuan Qu ◽  
Farzaneh Abbaspourtorbati ◽  
Marek Zima
Keyword(s):  
Transmission System ◽  
System Model ◽  
Cross Border ◽  
Balancing Energy

scholarly journals Preventing Internal Congestion in an Integrated European Balancing Activation Optimization

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 490 ◽  
Author(s):  
Martin Håberg ◽  
Hanna Bood ◽  
Gerard Doorman
Keyword(s):  
Market Structure ◽  
Transmission System ◽  
New Method ◽  
Numerical Example ◽  
Cross Border ◽  
Balancing Energy ◽  
System Operator ◽  
Transmission Constraints ◽  
Energy Activation ◽  
As If

New common platforms for optimization of balancing energy activation will facilitate cross-border exchange and integrate the fragmented European balancing markets. Having a zonal market structure, these platforms will optimize balancing actions as if intra-zonal transmission constraints did not exists, leaving it to each Transmission System Operator (TSO) to manage internal congestion caused by balancing energy activations. This paper describes a new method to pre-filter balancing bids likely to cause internal congestion due to their location. Furthermore, the complementary concept of exchange domains has been developed to prevent congested and infeasible balancing situations. A numerical example illustrates both the effectiveness and limitations of each method.

scholarly journals Evaluation of the Simultaneous Operation of the Mechanisms for Cross-Border Interchange and Activation of the Regulating Reserves

2021 ◽  
Vol 11 (17) ◽  
pp. 8188
Author(s):  
Marcel Topler ◽  
Boštjan Polajžer
Keyword(s):  
Frequency Control ◽  
Primary Objective ◽  
Load Frequency Control ◽  
Simultaneous Operation ◽  
Dynamic Simulations ◽  
Cross Border ◽  
Power Variation ◽  
Balancing Energy ◽  
And Performance ◽  
The Impact

This article examines the mechanisms for cross-border interchange of the regulating reserves (RRs), i.e., the imbalance-netting process (INP) and the cross-border activation of the RRs (CBRR). Both mechanisms are an additional service of frequency restoration reserves in the power system and connect different control areas (CAs) via virtual tie-lines to release RRs and reduce balancing energy. The primary objective of the INP is to net the demand for RRs between the cooperating CAs with different signs of interchange power variation. In contrast, the primary objective of the CBRR is to activate the RRs in the cooperating CAs with matching signs of interchange power variation. In this way, the ancillary services market and the European balancing system should be improved. However, both the INP and CBRR include a frequency term and thus impact the frequency response of the cooperating CAs. Therefore, the impact of the simultaneous operation of the INP and CBRR on the load-frequency control (LFC) and performance is comprehensively evaluated with dynamic simulations of a three-CA testing system, which no previous studies investigated before. In addition, a function for correction power adjustment is proposed to prevent the undesirable simultaneous activation of the INP and CBRR. In this way, area control error (ACE) and scheduled control power are decreased since undesired correction is prevented. The dynamic simulations confirmed that the simultaneous operation of the INP and CBRR reduced the balancing energy and decreased the unintended exchange of energy. Consequently, the LFC and performance were improved in this way. However, the impact of the INP and CBRR on the frequency quality has no unambiguous conclusions.

3D basin and petroleum system modelling in the North Sea Central Graben - a Dutch, German, Danish cross-border study

2020 ◽  
Author(s):  
Rüdiger Lutz ◽  
Jashar Arfai ◽  
Susanne Nelskamp ◽  
Anders Mathiesen ◽  
Niels Hemmingsen Schovsbo ◽  
...  
Keyword(s):  
Pilot Study ◽  
North Sea ◽  
Large Scale ◽  
Petroleum System ◽  
Source Rocks ◽  
System Model ◽  
Geochemical Data ◽  
System Modelling ◽  
Horizon 2020 ◽  
Cross Border

<p>A Geological Analysis and Resource Assessment of selected Hydrocarbon Systems (GARAH) is carried out as part of the overarching GeoERA project. Here, we report first results of a 3D basin and petroleum system model developed in a cross-border area of the Dutch, Danish and German North Sea Central Graben area. This pilot study reconstructs the thermal history, maturity and petroleum generation of potential Lower, Middle and Upper Jurassic source rocks. The 3D pilot study incorporates new aggregated and combined layers from the three countries. Results of the study feed back into the 3DGEO-EU project of GeoERA.</p><p>Eight key horizons covering the whole German Central Graben and parts of the Dutch and Danish North Sea Central Graben were selected for building the stratigraphic and geological framework of the 3D basin and petroleum system model. The model includes depth and thickness maps of important stratigraphic units as well as the main salt structures. Petrophysical parameters, generalized facies information and organic geochemical data from well reports are assigned to the different key geological layers. The model is further calibrated with temperature and maturity data from wells of the three countries and from publications. The time span from the Late Permian to the Present is represented by the model including the most important erosional phases related to large-scale tectonic events during the Late Jurassic to Late Cretaceous. Additionally, salt movement through time expressed as diapirs and pillows is considered within the 3D basin and petroleum system model.</p><p>This is a part of an ongoing EU Horizon 2020 GeoERA project (The GARAH, H2020 grant #731166 lead by GEUS).</p>

Modeling and Simulation for Super-Mild Hybrid Electric Vehicles

2013 ◽  
Vol 333-335 ◽  
pp. 2072-2075
Author(s):  
Jian Fei Shi ◽  
Bo Jun Zhang ◽  
Yu Wang
Keyword(s):  
Electric Vehicles ◽  
Hybrid Electric Vehicle ◽  
Hybrid Electric Vehicles ◽  
Model Development ◽  
Vehicle Control ◽  
Transmission System ◽  
System Model ◽  
Simulation Results ◽  
Hybrid Electric ◽  
Mild Hybrid

Analysis the super-mild hybrid electric vehicle and its transmission system, the transmission system model of low-gear is established through bond graph. Establish vehicle control simulation model, development of low-gear control strategy to simulation. The simulation results show that the fuel economy and emission performance are improved.

A framework for analysing cross-border climate change impacts, responses and their propagation

2021 ◽  
Author(s):  
Timothy R. Carter ◽  
Magnus Benzie ◽  
Emanuele Campiglio ◽  
Henrik Carlsen ◽  
Stefan Fronzek ◽  
...  
Keyword(s):  
Climate Change ◽  
Conceptual Framework ◽  
Global Economy ◽  
Climate Change Impacts ◽  
Transmission System ◽  
Arctic Sea Ice ◽  
Climate Impacts ◽  
The European Union ◽  
Cross Border ◽  
The Impact

<p>Most studies of climate change impacts, adaptation and vulnerability confine their attention to impacts and responses within the same geographical region. However, cross-border climate change impacts that occur remotely from the location of their initial impact can severely disrupt societies and livelihoods (Benzie et al., 2019; Carter et al., under review). In this paper we present a conceptual framework and accompanying terminology for describing and analysing such cross-border impacts. The conceptual framework distinguishes an initial impact that is caused by a climate trigger within a specific region. Downstream consequences of that impact propagate through an impact transmission system while adaptation responses to deal with the impact are propagated through a response transmission system.</p><p>The framework recognises and classifies differences in the types of climate trigger, categories of cross-border impacts, scales and dynamics of impact transmission, targets and dynamics of responses and the socio-economic and environmental context. We will demonstrate how the framework can be applied using  historical examples of cross-border impacts (e.g. the severe 2011 floods that affected industrial production in Thailand, propagating through the global economy) as well as prospective cases (e.g. multiple cross-border risks and opportunities presented by Arctic sea ice decline).</p><p>We argue that the framework provides a simple, but flexible, structure to describe and analyse cross-border climate impacts and their consequences. It offers a foundation for consistent comparisons of different patterns of cross-border impacts in different sectors and geographies. It also aids understanding of adaptation strategies and their potential consequences. In particular, with systematic application of the framework it is possible to highlight gaps in our existing understanding of system dynamics, or gain new insights into particular leverage points within the system. These can be targeted in order to find ways of building resilience to climate change in the region of origin, along the impact transmission system and in the recipient region exposed to the propagated risk.</p><p>Acknowledgement</p><p>This work is being undertaken as part of the European Commission Horizon 2020-funded project CASCADES (Cascading climate risks: Towards adaptive and resilient European Societies).</p><p>References</p><p>Benzie M, Carter TR, Carlsen H, Taylor R (2019) Cross-border climate change impacts: implications for the European Union. <em>Regional Environmental Change</em> 19: 763-776, https://doi.org/10.1007/s10113-018-1436-1.</p><p>Carter TR, Benzie M, Campiglio E, Carlsen H, Fronzek S, Hildén M, Reyer CPO, West C (in review) A conceptual framework for cross-border impacts of climate change.</p>

Distributed Series Static Compensator Deployment Using a Linearized Transmission System Model

2015 ◽  
Vol 30 (3) ◽  
pp. 1269-1277 ◽  
Author(s):  
Alexander Brissette ◽  
Dragan Maksimovic ◽  
Yoash Levron
Keyword(s):  
Transmission System ◽  
System Model ◽  
Static Compensator

scholarly journals The impact of the construction of the new 400 kV transmission power lines between Slovakia and Hungary on the cross-border transmissions

2019 ◽  
Vol 70 (5) ◽  
pp. 418-428
Author(s):  
Marek Siranec ◽  
Alena Otcenasova ◽  
Peter Bracinik
Keyword(s):  
Simulation Model ◽  
Transmission Lines ◽  
Transmission System ◽  
Power Lines ◽  
Transmission Power ◽  
System Operation ◽  
Cross Border ◽  
Before And After ◽  
The Cross ◽  
The Impact

Abstract This article is focused on the analysis of impacts on the cross-border transmissions between Slovakia and Hungary and between Slovakia and Ukraine after the completion of the new 400 kV transmission lines on the cross-border profile Slovakia – Hungary. A simulation model of the Slovak transmission system in software ETAP was created, which is set for exploring the impacts of the new Slovak – Hungarian transmission lines 447, 480 and 481 on the cross-border and national transmissions. Correctness of the created simulation model was confirmed by the match of the measured values from winter nationwide measurement with the calculated values from the simulation model. Subsequently, several variants of the Slovak transmission system operation before and after completion of the new power lines to Hungary were evaluated.

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