scholarly journals pandapipes: an Open Source Piping Grid Calculation Package for the Application in Coupled Multi-Energy Grid Simulations

2020 ◽  
Author(s):  
Daniel Lohmeier ◽  
Dennis Cronbach ◽  
Simon Ruben Drauz ◽  
Martin Braun ◽  
Tanja Manuela Kneiske
Keyword(s):  
Open Source ◽  
District Heating ◽  
Evaluation Process ◽  
Peak Shaving ◽  
First Case ◽  
Model Setup ◽  
And Performance ◽  
Set Up ◽  
Power To Gas

The increasing complexity of the design and operation evaluation process of multi-energy grids (MEGs) requires tools for the coupled simulation of power, gas and district heating grids. Most tools analyzed in this paper either do not allow coupling of infrastructures, simplify the grid model or are not publicly available. We introduce the open source piping grid simulation tool pandapipes that – in interaction with pandapower - fulfills three crucial criteria: clear data structure, adaptable MEG model setup and performance. In an introduction to pandapipes we illustrate how it fulfills these criteria through its internal structure and demonstrate how it performs in comparison to STANET®. Then we show two case studies that have been performed with pandapipes already. The first case study demonstrates a peak shaving strategy as interaction of a local electricity and district heating grid in a small settlement. The second case study analyzes the potential of a power-to-gas device to serve as flexibility in a power grid under consideration of gas grid constraints. They both show the importance of a clear database, a simple simulation setup and good performance to set up different large and complex studies on grid infrastructure design and operation.

scholarly journals Pandapipes: An Open-Source Piping Grid Calculation Package for Multi-Energy Grid Simulations

2020 ◽  
Vol 12 (23) ◽  
pp. 9899
Author(s):  
Daniel Lohmeier ◽  
Dennis Cronbach ◽  
Simon Ruben Drauz ◽  
Martin Braun ◽  
Tanja Manuela Kneiske
Keyword(s):  
Open Source ◽  
Small Neighborhood ◽  
District Heating ◽  
Evaluation Process ◽  
Peak Shaving ◽  
First Case ◽  
Model Setup ◽  
And Performance ◽  
Power To Gas

The increasing complexity of the design and operation evaluation process of multi-energy grids (MEGs) requires tools for the coupled simulation of power, gas and district heating grids. In this work, we analyze a number of applicable tools and find that most of them do not allow coupling of infrastructures, oversimplify the grid model or are based on inaccessible source code. We introduce the open source piping grid simulation tool pandapipes that—in interaction with pandapower—addresses three crucial criteria: clear data structure, adaptable MEG model setup and performance. In an introduction to pandapipes, we illustrate how it fulfills these criteria through its internal structure and demonstrate how it performs in comparison to STANET®. Then, we show two case studies that have been performed with pandapipes already. The first case study demonstrates a peak shaving strategy as an interaction of a local electricity and district heating grid in a small neighborhood. The second case study analyzes the potential of a power-to-gas device to provide flexibility in a power grid while considering gas grid constraints. These cases show the importance of performing coupled simulations for the design and analysis of future energy infrastructures, as well as why the software should fulfill the three criteria.

Preliminary Design and Performance Assessment of an Underwater CAES System (UW-CAES) for Wind Power Balancing

2019 ◽  
Author(s):  
Marco Astolfi ◽  
Giulio Guandalini ◽  
Marco Belloli ◽  
Adriano Hirn ◽  
Paolo Silva ◽  
...  
Keyword(s):  
Energy Storage ◽  
Performance Assessment ◽  
Power Input ◽  
Compressed Air ◽  
Preliminary Design ◽  
Round Trip ◽  
Peak Shaving ◽  
Renewable Power ◽  
And Performance

Abstract A key approach to large renewable power management is based on implementing storage technologies, including batteries, power-to-gas and compressed air energy storage (CAES). This work presents the preliminary design and performance assessment of an innovative type of CAES, based on underwater storage volumes (UW-CAES) and intended for installation in the proximity of deep water seas or lakes. The UW-CAES works with constant hydrostatic pressure storage and variable volumes. The proposed system is adiabatic, not using any fuel to increase the air temperature before expansion; a sufficient TIT is instead obtained through a thermal energy storage system which recovers the compression heat. The system includes (i) a set of turbomachines (modular multi-stage compressor, with partial intercooling; expansion turbine); (ii) a thermal energy storage (TES) system with different temperature levels designed to recover a large fraction of the compression heat, allowing the subsequent heating of air prior to the expansion phase; (iii) an underwater modular compressed air storage, conceived as a network of rigid but open tanks lying on the seabed and allowing a variable-volume and constant pressure operation. The compressor operates at variable loads, following an oscillating renewable power input, according to strategies oriented to improve the overall system dispatchability; the expander can be designed to work either at full load, thanks to the stability of the air flow rate and of the TIT guaranteed by the thermal storage, or at variable load. The paper first discusses in detail the sizing and off-design characterization of the overall system; it is then simulated a case study where the UW-CAES is coupled to a wind farm for peak shaving and dispatchability enhancement, evaluating the impact of a realistic power input on performances and plant flexibility. Although the assessment shall be considered preliminary, it is shown that round trip efficiency in the range of 75%–80% can be obtained depending on the compressor section configuration; making the UW-CAES a promising technology compared to electrochemical and pumped-hydro storage systems. The technology is also applied to perform peak-shaving of the electricity production from a wind park; annual simulations considering part load operation result in global round trip efficiency around 75% with a 10 to 15% reduction in the average unplanned energy injection in the electric grid. The investigated case study provides an example of the potential of this system in providing power output peak shaving when coupled with an intermittent and non-predictable energy source.

scholarly journals Developing a Coupling Model System of Global Rainfall Data and Open-Source Model for Water Forecast in Poorly Gauged Basins

2019 ◽  
Vol 3 (1) ◽  
pp. 355 ◽  
Author(s):  
Duong Du Bui ◽  
Duc Minh Tran ◽  
Huong Thi Vu ◽  
Nuong Thi Bui
Keyword(s):  
Open Source ◽  
Input Data ◽  
Water Security ◽  
Coupling Model ◽  
Source Model ◽  
Rainfall Data ◽  
Creative Commons ◽  
Set Up ◽  
User Friendly

Water security is under severe pressures from human interventions and climate change in all over the world and improved water forecast is essential for water management. HYPE is a semi-distributed hydrographic model, running on Windows or Linux operating systems. The code of the model is written by the Fortran programming language and open source as Lesser GNU Public License. HYPE has been becoming a widely used tool in the forecasting of transboundary flows. However, the application of HYPE encounters many difficulties in processing input data and serving the construction, calibration, and validation of the model. This article introduces the development of the V-HYPE tool that helps a couple of global rainfall data and HYPE model for operational use. V-HYPE allows developing a user-friendly interface and setting parameters of the HYPE model as well as evaluating errors and transforming and visually displaying the results of the model. Besides, the V-HYPE has the ability to show related maps (i.e. sub-basins, river network, lake, and dams, etc), set up input data, automatically download global rainfall data, and visually display results on WebGIS. V-HYPE also can generate bulletins supporting for operational water resources warning and forecasting works in Vietnam. The utilities of this tool are demonstrated in the case study of Serepok river basin.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.

Preliminary Design and Performance Assessment of an Underwater Compressed Air Energy Storage System for Wind Power Balancing

2020 ◽  
Vol 142 (9) ◽  
Author(s):  
Marco Astolfi ◽  
Giulio Guandalini ◽  
Marco Belloli ◽  
Adriano Hirn ◽  
Paolo Silva ◽  
...  
Keyword(s):  
Energy Storage ◽  
Wind Farm ◽  
Power Input ◽  
Compressed Air ◽  
Preliminary Design ◽  
Compressed Air Energy Storage ◽  
Peak Shaving ◽  
Renewable Power ◽  
And Performance

Abstract A key approach to large renewable power management is based on implementing storage technologies, including batteries, power-to-gas, and compressed air energy storage (CAES). This work presents the preliminary design and performance assessment of an innovative type of CAES, based on underwater compressed air energy storage (UW-CAES) volumes and intended for installation in the proximity of deep-water seas or lakes. The UW-CAES works with constant hydrostatic pressure storage and variable volumes. The proposed system is adiabatic, not using any fuel to increase the air temperature before expansion; a sufficient turbine inlet temperature (TIT) is instead obtained through a thermal energy storage (TES) system which recovers the compression heat. The system includes (i) a set of turbomachines (modular multistage compressor, with partial intercooling; expansion turbine); (ii) a TES system with different temperature levels designed to recover a large fraction of the compression heat, allowing the subsequent heating of air prior to the expansion phase; (iii) an underwater modular compressed air storage, conceived as a network of rigid but open tanks lying on the seabed and allowing a variable-volume and constant pressure operation. The compressor operates at variable loads, following an oscillating renewable power input, according to strategies oriented to improve the overall system dispatchability; the expander can be designed to work either at full load, thanks to the stability of the air flowrate and of the TIT guaranteed by the thermal storage, or at variable load. This paper first discusses in detail the sizing and off-design characterization of the overall system; then it simulates a case study where the UW-CAES is coupled to a wind farm for peak shaving and dispatchability enhancement, evaluating the impact of a realistic power input on performances and plant flexibility. Although the assessment shall be considered preliminary, it is shown that round-trip efficiency (RTE) in the range of 75–80% can be obtained depending on the compressor section configuration, making the UW-CAES a promising technology compared to electrochemical and pumped-hydrostorage systems. The technology is also applied to perform peak-shaving of the electricity production from an off-shore wind farm; annual simulations, based on realistic wind data and considering part-load operation, result in global RTE around 75% with a 10–15% reduction in the average unplanned energy injection in the electric grid. The investigated case study provides an example of the potential of this system in providing power output peak shaving when coupled with an intermittent and nonpredictable energy source.

2Fik’s Coming out à l’orientale and “Coming out” of France

2018 ◽  
Author(s):  
Denis M. Provencher
Keyword(s):  
Coming Out ◽  
Creative Work ◽  
Personal Story ◽  
First Case ◽  
And Performance ◽  
Electronic Technologies

In this chapter, I present and analyze photographer and performance artist “2Fik” (pronounced “Toufik”), one of the Maghrebi French interlocutors from my fieldwork.I situate 2Fik as the first case study because his personal story and creative work provide a very poignant example of the convergence of all three driving threads of the book – language, temporalities, filiations – and the emergence of a transfilial model that draws significantly on his mastery of electronic technologies.

Ubiquitous Positioning Technologies for Modern Intelligent Navigation Systems

2005 ◽  
Vol 59 (1) ◽  
pp. 91-103 ◽  
Author(s):  
Guenther Retscher ◽  
Allison Kealy
Keyword(s):  
Dead Reckoning ◽  
Satellite System ◽  
Indoor Environments ◽  
Navigation Systems ◽  
Pedestrian Navigation ◽  
First Case ◽  
And Performance ◽  
Navigation Service ◽  
Global Navigation Satellite

Recently new location technologies have emerged that can be employed in modern advanced navigation systems. They can be employed to augment Global Navigation Satellite System (GNSS) positioning techniques and dead reckoning as they offer different levels of positioning accuracies and performance. An integration of other technologies is especially required in indoor and outdoor-to-indoor environments. The paper gives an overview of the newly developed ubiquitous positioning technologies and their integration in navigation systems. Furthermore two case studies are presented, i.e., the improvement of land vehicle safety using Augmented Reality (AR) technologies and pedestrian navigation services for the guidance of users to certain University offices. In the first case study the integration of map matching into a Kalman filter approach is performed (referred to as “Intelligent Vehicle Navigation”) and its principle is briefly described. This approach can also be adapted for the pedestrian navigation service described in the second case study.

Evolution of internal quality assurance at one university – a case study

2017 ◽  
Vol 25 (2) ◽  
pp. 189-205 ◽  
Author(s):  
David O’Sullivan
Keyword(s):  
Quality Assurance ◽  
Evaluation Process ◽  
Internal Quality ◽  
Research Assessment ◽  
Strategy Execution ◽  
Content Type ◽  
Study Approach ◽  
Policies And Procedures ◽  
And Performance

Purpose Quality assurance (QA) at one University has evolved over the past 15 years through emerging National and European standards, various leadership initiatives and through the engagement of key stakeholders in co-designing and implementing internal QA processes. In 2000, the QA process was focussed mainly on quality review (QR) that involved extensive reporting of information. It was characterised by stakeholders as a largely reactive culture, treated with scepticism by faculty staff and that struggled to convince both management and faculty that QA provided value. In 2016, QR is now leaner, more evidence based and focussed around creativity and enhancement. In addition to QR, additional QA processes now incorporate a variety of activities including benchmarking, structured policies and procedures and research assessment. QA is also part of a tripartite approach that links quality, strategy and performance together, with quality focusing on assuring an appropriate standard of excellence, strategy guiding faculty towards a vision of the future and performance providing evidence of quality enhancement and strategy execution. The paper provides a case study of the transformation of QA at the University. Design/methodology/approach The research uses a case study approach. It documents a methodology used to engage a wide number of stakeholders in a self-evaluation process and the results of that process, i.e. enhancements to the internal review process and various policies and procedures. Findings There are early indications that the University’s internal QA has migrated towards a more responsive culture and is increasingly endorsed by the various internal and external stakeholder groups. Research limitations/implications This paper presents the evolution of QA and potential lessons for the wider Higher Education Institutions (HEI’s) sector. Originality/value This paper provides a case study of changes to QA processes at one university that has risen significantly in various university rankings since. Some evidence is provided to show that quality initiatives have contributed to overall performance.

scholarly journals A cost-effective IoT strategy for remote deployment of soft sensors – a case study on implementing a soft sensor in a multistage MBBR plant

2020 ◽  
Vol 81 (8) ◽  
pp. 1733-1739 ◽  
Author(s):  
A. M. Nair ◽  
A. Hykkerud ◽  
H. Ratnaweera
Keyword(s):  
Open Source ◽  
Cost Effective ◽  
Data Access ◽  
Quality Parameters ◽  
Soft Sensor ◽  
Biofilm Reactor ◽  
Remote Access ◽  
Soft Sensors ◽  
Set Up

Abstract Model-based soft sensors can enhance online monitoring in wastewater treatment processes. These soft sensor scripts are executed either locally on a programmable logic controller (PLC) or remotely on a system with data-access over the internet. This work presents a cost-effective, flexible, open source IoT solution for remote deployment of a soft sensing algorithm. The system uses low-priced hardware and open-source programming language to set up the communication and remote-access system. Advantages of the new IoT architecture are demonstrated through a case study for remote deployment of an Extended Kalman Filter (EKF) to estimate additional water quality parameters in a multistage moving bed biofilm reactor (MBBR) plant. The soft-sensor results are successfully validated against standardised laboratory measurements to prove their ability to provide real-time estimations.

Critical barriers to augmented reality technology adoption in developing countries: a case study of Nigeria

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ayodeji Emmanuel Oke ◽  
Victor Adetunji Arowoiya
Keyword(s):  
Augmented Reality ◽  
Construction Industry ◽  
Project Managers ◽  
Content Type ◽  
Significant Difference ◽  
Augmented Reality Technology ◽  
The Difference ◽  
And Performance ◽  
Set Up

Purpose The paper aims to identify the critical barriers to augmented reality technology (ART) in the Nigerian construction industry to allow wider adoption. The objectives are to reveal those hindrances to the wider usage of ART so that the obstacles can be tackled and overcome. Design/methodology/approach A survey of construction professionals involved in the built environment was sent well-structured questionnaires in the study area. The professionals involved are quantity surveyors, architects, engineers, project managers and builders. Convenience sampling techniques were used in selecting those professionals. Descriptive and inferential statistics were used in analyzing the retrieved data. Findings The most ranked obstacles in adopting augmented realities are lack of technological awareness, difficulty in ease of ART system set up, the unwillingness of government and private bodies to invest in augmented reality research, lack of repository database, lack of portability for ART equipment system. The findings also revealed the difference in the opinions of professionals among the variables. The results showed that there is a significant difference in the opinions of respondents regarding 6 of the identified 15 variables. Originality/value The study gives deep insight into possible hindrances in the use of emerging technologies such as ART in construction. This study also enumerated some ways how these challenges can be tackled and solved in the Nigerian construction industry for better adoption and performance.

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