scholarly journals Transactive Energy in an Urban Environment: A Case Study of Local Generation and Flexibility Potentials in a Singaporean Urban District

2021 ◽  
Vol 9 ◽  
Author(s):  
Kai Zhang ◽  
Sebastian Troitzsch ◽  
Si-Yue Zhang ◽  
Erine Siew Pheng Teh ◽  
Lalitha Subramanian ◽  
...  
Keyword(s):  
Urban Environment ◽  
System Integration ◽  
State Space Model ◽  
Real Life ◽  
Energy System ◽  
Waste To Energy ◽  
Pv System ◽  
Urban District ◽  
Representative Study

This article presents a case study of distributed generation and flexibility potential for a multienergy system in an urban district in Singapore. The analysis incorporates real-life data of a local energy system consisting of flexible loads (i.e., district cooling demand from air-conditioned buildings) and distributed generators (DGs) (i.e., waste-to-energy (W2E) generators and photovoltaic (PV) generators) from a representative study area. The demand-side flexibility (DSF) potentials from air-conditioned buildings are derived based on a state-space model and its underlying base load estimation. Besides the conventional consideration of PV system integration in the urban environment, we conducted a feasibility study of the distributed W2E technology deployment and estimated the generation potentials for the study area. Furthermore, to facilitate flexibility and energy exchange, market frameworks are proposed to harvest energy and flexibility from distributed energy resources (DERs) and in the real-time market context in Singapore.

scholarly journals Techno-Economic Analysis of Grid-Connected PV and Fuel Cell Hybrid System Using Different PV Tracking Techniques

2020 ◽  
Vol 10 (23) ◽  
pp. 8515
Author(s):  
Saif Mubaarak ◽  
Delong Zhang ◽  
Yongcong Chen ◽  
Jinxin Liu ◽  
Longze Wang ◽  
...  
Keyword(s):  
Hybrid System ◽  
Energy Systems ◽  
Energy System ◽  
Vital Role ◽  
Pv System ◽  
Hybrid Energy ◽  
Cost Of Energy ◽  
System Components ◽  
Pv Generation

Solar energy has attracted the attention of researchers around the world due to its advantages. However, photovoltaic (PV) panels still have not attained the desired efficiency and economic mature. PV tracking techniques can play a vital role in improving the performance of the PV system. The aim of this paper is to evaluate and compare the technical and economic performance of grid-connected hybrid energy systems including PV and fuel cells (FC) by applying major types of PV tracking technique. The topology and design principles and technical description of hybrid system components are proposed in this paper. Moreover, this paper also introduces economic criteria, which are used to evaluate the economy of different PV tracking techniques and seek the optimal configuration of system components. In the case study, the results show that the vertical single axis tracker was ranked 1st in terms of highest PV generation, penetration of renewable energy to the grid, lowest CO2 emission, highest energy sold to the grid and lowest purchased, and lowest net present cost (NPC) and levelized cost of energy (LCOE). The study found that the optimal design of a grid-connected hybrid energy system (PV-FC) was by using a vertical single axis tracker which has the lowest NPC, LCOE.

A framework for local and regional energy system integration between industry and municipalities—Case study UPM-Kymmene Kaukas

Energy ◽  
2006 ◽  
Vol 31 (12) ◽  
pp. 2162-2175 ◽  
Author(s):  
T TVEIT ◽  
J AALTOLA ◽  
T LAUKKANEN ◽  
M LAIHANEN ◽  
C FOGELHOLM
Keyword(s):  
System Integration ◽  
Energy System ◽  
Regional Energy

scholarly journals Identification of Risk Factors Affecting PPP Waste-to-Energy Incineration Projects in China: A Multiple Case Study

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
Yong Liu ◽  
Chenjunyan Sun ◽  
Bo Xia ◽  
Sai Liu ◽  
Martin Skitmore
Keyword(s):  
Risk Factors ◽  
Real Life ◽  
Regulatory System ◽  
Multiple Case Study ◽  
Risk Identification ◽  
Waste To Energy ◽  
Risk Allocation ◽  
Factors Affecting ◽  
Multiple Case

Waste-to-energy (WTE) incineration technologies are considered an effective solution for sustainable and efficient municipal solid waste (MSW) disposal in China, and the public-private partnership (PPP) arrangement has been widely used to construct and operate WTE incineration projects. However, PPP WTE incineration projects in China are affected by numerous risks due to the long concession period, various participants, and other factors commonly involved in PPPs, resulting in a number of failures. In light of the pivotal role that risk identification, analysis, and response play in the successful development of PPP WTE incineration projects, this paper presents a multiple case study to identify the risk factors involved in China by drawing on experience from the real-life risk events of 35 PPP WTE incineration plants. 18 risk factors are identified; the most critical of which being public opposition risk, environmental pollution risk, government decision-making risk, a defective legal and regulatory system, and MSW supply risk. The results of the study provide a solid foundation for the future risk analysis, risk allocation, and risk response of PPP WTE incineration projects, and shed light on performance improvement of the PPP WTE incineration projects as well as the development of the PPP WTE industry in China.

Design and Analysis of an Urban Building Integrated PV System

Solar Energy ◽  
2005 ◽  
Author(s):  
Shveta Kantamsetti ◽  
Mary Raskauskas ◽  
Vanessa Torres ◽  
Pritpal Singh
Keyword(s):  
Urban Development ◽  
Urban Environment ◽  
Physical Model ◽  
Material Properties ◽  
The Sun ◽  
Pv System ◽  
Photovoltaic Panels ◽  
Building Geometry ◽  
Center City

The objective of the present project is to estimate the power generated from solar energy absorbed by photovoltaic panels mounted on the fac¸ade of a building in an urban environment, taking into account shading and reflection from neighboring buildings. A simple prototype of an urban development has been designed and modeled in AutoCAD, with the help of AccuRender. This paper includes the simulation of the model, taking into consideration the building geometry, orientation with respect to the sun, material properties of the surrounding buildings, and ground reflections. Also included is a discussion about a scaled physical model that is being used to validate the computer modeling, followed by a case study on the installation of a BIPV system on Ten Penn Center in Center City, Philadelphia.

scholarly journals Integrated Modelling of Decentralised Energy Supply in Combination with Electric Vehicle Charging in a Real-Life Case Study

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6874
Author(s):  
Georg Göhler ◽  
Anna-Lena Klingler ◽  
Florian Klausmann ◽  
Dieter Spath
Keyword(s):  
Simulation Model ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Real Life ◽  
Energy Systems ◽  
Energy System ◽  
Electric Vehicle Charging ◽  
Self Sufficiency ◽  
The Future

Intelligent integration of decentralised energy resources, local storage and direct consumption are key factors in achieving the transformation of the energy system. In this study, we present a modular simulation concept that allows the planning of decentralised energy systems for buildings and building blocks. In comparison to related studies, we use a simulation model for energy planning with a high time-resolution from the perspective of the energy system planner. In this study, we address the challenges of the grid connection in combination with an increasing number of electric vehicles (EV) in the future. The here developed model is applied for an innovative building block in Germany with a photovoltaic (PV) system, a combined heat and power (CHP) unit, battery storage and electric vehicles. The results of the simulation are validated with real-life data to illustrate the practical relevance and show that our simulation model is able to support the planning of decentralised energy systems. We demonstrate that without anticipating future electric vehicle charging, the system configurations could be sub-optimal if complete self-sufficiency is the objective: in our case study, the rate of self-sufficiency of the net-zero energy building will be lowered from 100% to 91% if considering electric vehicles. Furthermore, our simulation shows that a peak minimising operation strategy with a battery can prevent grid overloads caused by EV charging in the future. Simulating different battery operation strategies can further help to implement the most useful strategy, without interruption of the current operation.

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