scholarly journals Substation Related Forecasts of Electrical Energy Storage Systems: Transmission System Operator Requirements

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6207
Author(s):  
Tamara Schröter ◽  
André Richter ◽  
Jens Götze ◽  
André Naumann ◽  
Jenny Gronau ◽  
...  
Keyword(s):  
Power Plants ◽  
Storage Systems ◽  
Electrical Energy ◽  
Distribution Networks ◽  
Transmission System ◽  
Specific Storage ◽  
Network Load ◽  
System Operator ◽  
Micro Power ◽  
The Impact

The growth in volatile renewable energy (RE) generation is accompanied by an increasing network load and an increasing demand for storage units. Household storage systems and micro power plants, in particular, represent an uncertainty factor for distribution networks, as well as transmission networks. Due to missing data exchanges, transmission system operators cannot take into account the impact of household storage systems in their network load and generation forecasts. Thus, neglecting the increasing number of household storage systems leads to increasing forecast inaccuracies. To consider the impact of the storage systems on forecasting, this paper presents a new approach to calculate a substation-specific storage forecast, which includes both substation-specific RE generation and load forecasts. For the storage forecast, storage systems and micro power plants are assigned to substations. Based on their aggregated behavior, the impact on the forecasted RE generation and load is determined. The load and generation are forecasted by combining several optimization approaches to minimize the forecasting errors. The concept is validated using data from the German transmission system operator, 50 Hertz Transmission GmbH. This investigation demonstrates the significance of using a battery storage forecast with an integrated load and generation forecast.

USE OF PHOTOELECTRIC MODULES WITH DOUBLE-SIDED RECEIVING SURFACE FOR SMALL GENERATION UNITS

2021 ◽  
pp. 93-100
Author(s):  
V. V. Kuvshinov ◽  
E. A. Bekirov ◽  
E. V. Guseva
Keyword(s):  
Solar Cells ◽  
Energy Storage ◽  
Solar Energy ◽  
Power Plants ◽  
Storage Systems ◽  
Renewable Energy Sources ◽  
Experimental Studies ◽  
Electrical Energy ◽  
Photovoltaic Systems ◽  
Energy Storage Systems

In the presented work, the possibility of using photovoltaic silicon panels with a double-sided arrangement of solar cells on the front and back sides is presented. With a lack of space for placing solar panels, these types of modules can significantly increase the generation of electrical energy. Equipping photovoltaic systems with rechargeable batteries contributes to a more rational consumption of electrical energy, while energy storage systems significantly increase the efficiency of solar generating systems. The proposed designs are intended to increase the power characteristics of solar energy converters in the winter months, in the presence of snow or when using reflective surfaces on road surfaces. The results of the experimental studies have shown a significant efficiency of the proposed designs, as well as an increase in the total generation of electrical energy. With the development of the global technical potential and a significant increase in the production of power plants for solar energy, a new opportunity has emerged to use combined solar plants for photovoltaic conversion of the flux of incident solar radiation. At the Department of Renewable Energy Sources and Electrical Systems and Networks at Sevastopol State University, at the site of the Institute of Nuclear Energy and Industry, a photovoltaic installation was developed and studied, consisting of two side silicon solar cells and energy storage systems. The article presents the results of experimental and theoretical studies, presents diagrams, drawings and graphs of various characteristics of the FSM-110D photovoltaic panel and storage batteries. The research results show the increased efficiency of the proposed installation, as well as a good possibility of using the presented photovoltaic systems to provide them with autonomous and individual consumers living in the Crimean region and the city of Sevastopol.

scholarly journals Modeling and analysis: power injection model approach for high performance of electrical distribution networks

2021 ◽  
Vol 10 (6) ◽  
pp. 2943-2952
Author(s):  
Baraa Jalil Abdulelah ◽  
Yousif Ismail Mohammed Al-Mashhadany ◽  
Sameer Algburi ◽  
Gozde Ulutagay
Keyword(s):  
High Performance ◽  
Fuzzy Inference ◽  
Block Diagram ◽  
Electrical Energy ◽  
Distribution Networks ◽  
Effect Of Temperature ◽  
Inference System ◽  
Modeling And Analysis ◽  
Point Tracking ◽  
The Impact

The generation of electrical energy varies depending on the needs of the user, initial requirements, capacity, intended use, waste generation, and economic efficiency. In order to meet the challenges of the proposed overvoltage of the presented system, it is possible to use the solar collectors and profit from them economically through smart grid smart control systems. The mathematical model with four main parts was created: simulation, correlation, and evaluation according to the solar program set of photovoltaic solar modules, maximum power point tracking (MPPT), an adaptive neuro-fuzzy inference system (ANFIS) controller, and 600-volt electric network. Then in this phase, the investigation of the effects on the network on the basis of the output power with the coincidence of radiation and the effect of temperature in the network is carried out. An analysis was carried out to evaluate the impact of these fundamental limitations in practical application. In this section, the simulation of the proposed system is discussed. The block diagram of the developed system is presented in the last part. The proposed system was assessed from the Matlab simulation tapes and graphs for each part of the system, and the results of the overall system simulation were taken into account.

scholarly journals Modelling of Luminous Flux Directed to the Upper Hemisphere from Electrical Substation before and after the Refurbishment of Lighting Systems

Energies ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 345
Author(s):  
Tomas Novak ◽  
Petr Becak ◽  
Roman Dubnicka ◽  
Jana Raditschova ◽  
Dionyz Gasparovsky ◽  
...  
Keyword(s):  
Rural Areas ◽  
Luminous Flux ◽  
Transmission System ◽  
International Standards ◽  
Low Luminance ◽  
Before And After ◽  
System Operator ◽  
Lighting Systems ◽  
Electrical Substation ◽  
The Impact

This article deals with options for how to express the luminous flux from outdoor electrical substations of the electric transmission system. Processing of the models of light emissions before and after refurbishment of lighting systems was motivated by setting out rules for the design and erection of refurbished lighting systems in outdoor electrical substations, which are most commonly built in inhabited rural areas with low luminance of the background. The proposed model and calculations are based on requirements of international standards and recommendations for lighting of outdoor workplaces as well as on internal regulations of the ČEPS (Czech Transmission System Operator). These requirements are implemented in real electrical substations and lighting models that are extended by the calculation space of the software goniophotometer. The software goniophotometer was used to evaluate light distribution characteristics of entire electric stations in various situations. This article assesses the impact of different lighting systems installed at electrical substations from the perspective of both direct and total luminous flux directed to the upper hemisphere. It takes into account three outdoor electrical substations (420 kV) of a transmission network and their lighting systems before and after refurbishment. The aim of this article is to determine to what extent the electrical substations contribute to emissions of luminous flux to the upper hemisphere. Results from calculations on models show reduced radiation to the upper hemisphere up to 52.3% after refurbishment of obsolete lighting systems, although total installed flux actually increased due to a change in the ratio of direct and reflected luminous flux after refurbishment of lighting systems.

Carbon Dioxide Capture Using Sorbent-Loaded Hollow-Fiber Modules for Coal-Fired Power Plants

2021 ◽  
pp. 1-28
Author(s):  
Bachir El Fil ◽  
Dhruv C. Hoysall ◽  
Srinivas Garimella
Keyword(s):  
Carbon Dioxide ◽  
Power Plant ◽  
Hollow Fiber ◽  
Carbon Capture ◽  
Power Plants ◽  
Carbon Dioxide Capture ◽  
Electrical Energy ◽  
Parasitic Load ◽  
Temperature Swing Adsorption ◽  
The Impact

Abstract The impact of post-combustion carbon dioxide capture on the performance of a power plant is evaluated. A model of a coal power plant with post-combustion temperature swing adsorption CO2 capture using sorbent-loaded hollow fibers is presented. The resulting performance and cost of carbon capture are compared with those of other adsorption-based technologies. A parametric analysis of the performance of the power plant with respect to key parameters in the hollow fiber module operation is presented. It is found that electrical energy consumption for the compression of CO2 is a major parasitic load common to all absorption technologies and accounts for almost half of the total parasitic load. The effect of source temperature, flue gas fan and coupling fluid pump flow rates on overall system performance is presented. The impacts of different carbon capture technologies on the same coal-fired power plant are compared. Hollow fiber modules had the lowest parasitic load on the power plant, followed by KS-2 based carbon capture.

scholarly journals An Applied Model for Identification and Evaluation of Factors Affecting Energy Losses of Electric Distribution Network Case Study: Selected Counties of Bushehr Province

2016 ◽  
Vol 11 (1) ◽  
pp. 90
Author(s):  
Hamid Shahbandarzadeh ◽  
Gholamreza Jamali ◽  
Seyedeh FatemehYahosseini
Keyword(s):  
Energy Loss ◽  
Distribution Network ◽  
Electrical Energy ◽  
Distribution Networks ◽  
Influential Factors ◽  
Energy Losses ◽  
Statistical Population ◽  
Applied Model ◽  
Electric Distribution Network ◽  
The Impact

From its generation to utilization, some of the electrical energy gets wasted in the process. This loss of energy occurs due to various reasons, one of which is energy loss in distribution networks. Considering the high cost of power generation, it is important to identify factors causing this loss. This study was carried out with the objective of identifying energy loss factors and the importance of each factor. Lack of identification for factors stealing energy, network deterioration, amount of electrical load and the impact of such factors that can have significant influence on energy loss could diverge the path of energy management. Thus, the main objective of this study was to reduce energy loss and its additional costs by developing the concept of identifying influential factors and measuring the effect of each factor especially in different regions. The statistical population of this study comprised of power and energy experts and university professors. The statistical sample included 12 energy experts and their opinions were collected using questionnaires and paired comparisons. Weights of criteria were determined using SWARA technique. COPRAS-G technique was used for measuring the importance of criteria for Bushehr province distribution networks. The importance of criteria are: energy theft, measurement error, amount of load, network deterioration, loose fittings, improper placement of equipment, the amount of voltage, conductor resistance, equipment casualty, location and size of the capacitor, geographical conditions, Size and dimensions of the conductor, leakage, and network arrangements respectively. Distribution network of Assaluyeh region had the highest energy losses.

scholarly journals Modelling Energy Distribution in Residential Areas: A Case Study Including Energy Storage Systems in Catania, Southern Italy

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3715
Author(s):  
Alberto Fichera ◽  
Alessandro Pluchino ◽  
Rosaria Volpe
Keyword(s):  
Energy Storage ◽  
Energy Distribution ◽  
Urban Areas ◽  
Power Plants ◽  
Storage Systems ◽  
Distribution Networks ◽  
Operating Conditions ◽  
Residential Areas ◽  
Energy Storage Systems

Complexity is a widely acknowledged feature of urban areas. Among the different levels to which this definition applies, the energy sector is one of the most representative of this way of conceiving cities. An evidence of this complexity can be detected in the growing impact of prosumers. Prosumers produce energy to meet their own demands, distribute it directly to neighbors and, eventually, store the energy neither consumed nor distributed. The modelling of distribution networks is a challenging task that requires ad hoc models to simulate the mutual energy exchanges occurring among prosumers. To serve at this scope, this paper proposes an agent-based model aiming at determining which operating conditions enhance the energy distribution among prosumers and diminish the supply from traditional power plants. An application of the model within a residential territory is then presented and simulations are conducted under two scenarios: the first investigating the distribution among prosumers equipped with photovoltaics (PV) systems, the second integrating energy storage systems to PV panels. Both scenarios are studied at varying the installed PV capacity within the territory, the allowed distance of connection among prosumers, as well as the rate of utilization of the links of the network. Results from the simulated case study reveal that the energy distribution among prosumers can be enhanced by providing short-range links for the electricity exchange. Similar advantages can be achieved by integrating storage systems to PV, along with a significant reduction in the electricity requested to the centralized grid.

Assessing the value and impact of demand side response using whole-system approach

2017 ◽  
Vol 231 (6) ◽  
pp. 498-507 ◽  
Author(s):  
Danny Pudjianto ◽  
Goran Strbac
Keyword(s):  
Distribution System ◽  
System Approach ◽  
Distribution Systems ◽  
Transmission System ◽  
Investment Model ◽  
Demand Side ◽  
Electricity System ◽  
System Operator ◽  
The Impact ◽  
Demand Side Response

This paper describes the whole-system based model called Whole-electricity System Investment Model to quantify the benefits of demand flexibility. Whole-electricity System Investment Model is a holistic and comprehensive electricity system analysis model, which simultaneously optimises the long-term investment decisions against real-time operation decisions taking into account the flexibility provided by demand. The optimisation considers the impact of demand side response across all power subsystems, i.e. generation, transmission and distribution systems, in a coordinated fashion. This allows the model to capture the potential conflicts and synergies between different applications of demand side response in supporting particularly intermittency management at the national level, improving capacity margin, and minimising the cost of electrification. The impact and value of demand side response driven by whole-system approach are compared against the impact and value of distribution system operator or transmission system operator centric (silo approaches) demand side response applications and the importance of control coordination between distribution system operator and transmission system operator for optimal demand side response is discussed and highlighted.

Sign in / Sign up

Export Citation Format

Share Document