scholarly journals Dispatchable Substation for Operation and Control of Renewable Energy Resources

2020 ◽  
Vol 10 (21) ◽  
pp. 7938 ◽  
Author(s):  
Yeuntae Yoo ◽  
Seungmin Jung ◽  
Sungwoo Kang ◽  
Sungyoon Song ◽  
Jaehyeong Lee ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Resources ◽  
Entire System ◽  
Renewable Energy Resources ◽  
Stochastic Nature ◽  
Error Distributions ◽  
And Control

Renewable generation in power systems has proved to be challenging for system operators owing to the increasing levels of penetration. The operation of power systems currently requires additional flexibility and reserves due to the intermittency and unpredictability of renewable generators. However, it is difficult to precisely predict and control the stochastic nature of renewable sources; nevertheless, its capacity continues to increase. To monitor and control renewable generators efficiently, the entire system needs to be established in a hierarchical order. This study proposed the concept of a substation that is uniquely designed for renewable interconnection. The purpose of this substation is simple: to make the renewable generators dispatchable to operators such that each group of renewable generators is sufficiently stable to be considered as conventional generators. For this purpose, methods for sizing and controlling energy storage system are proposed based on forecasts and error distributions.

scholarly journals Optimal Operation of Combined Energy and Water Systems for Community Resilience against Natural Disasters

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6132
Author(s):  
Govind Joshi ◽  
Salman Mohagheghi
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Natural Disasters ◽  
Programming Model ◽  
Storage System ◽  
Optimal Operation ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Power Outages ◽  
Combined System

One of the most critical challenges for modern power systems is to reliably supply electricity to its consumers during and in the aftermath of natural disasters. As our dependence on electrical power has increased over the years, long-term power outages can lead to devastating impacts on affected communities. Furthermore, power outages can halt the operation of water treatment plants, leading to shortages in clean water, which is essential during post-disaster recovery. One way to address this is to temporarily reconfigure power and water networks into localized networks, i.e., electric microgrids and water micro-nets, that utilize local resources to supply local demand independently of the main power grid and/or water network. Utilizing distributed energy resources such as wind and solar and treating wastewater locally for potable reuse can provide the operational flexibility for such systems to operate sustainably. However, due to uncertainties in both renewable energy generation and electric/water consumption, ensuring sustainable operation is a challenging task. In this paper, an optimal operational strategy is proposed for an islanded microgrid/micro-net, considering the stochastic nature of renewable energy resources, electric demand, and water demand. An energy storage system is modeled to address the uncertainty in power generation and demand, in conjunction with local water storage and wastewater treatment to accommodate variable water demands. A two-stage stochastic programming model is formulated and solved to determine an optimal operation strategy for the combined system.

MPC Based Approach for Reliable Power System Energy Management with High Penetration Level of Renewable Energy Resources

2014 ◽  
Vol 986-987 ◽  
pp. 371-376 ◽  
Author(s):  
Yan Zhang ◽  
Bo Guo ◽  
Tao Zhang
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Distribution System ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Load Following ◽  
High Penetration ◽  
Battery Energy

This paper discusses using the battery energy storage system (BESS) to mitigate intermittency and sustain stability of distribution system integrating high penetration level of renewable energy resources (RER). The goal of the control is to have the BESS provide as much smoothing as possible, so that the RER power can be dispatchable in some kind and reliable. The effectiveness of model predictive control (MPC) based approach proposed in this paper have been tested by detail case study, also compared with the day ahead control strategy, load following strategy , and normal situation without energy storage which are usually used before. The result shows that the proposed MPC based approach is more practical, and more robust.

Load Management System with Integration of Renewable Energy Resources

2021 ◽  
Vol 13 (6) ◽  
Author(s):  
Faizan Rashid ◽  
◽  
Adeel Gilany ◽  
Saim Rasheed ◽  
Hamza Nisar ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Hybrid System ◽  
Management System ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Resources ◽  
Load Management ◽  
Renewable Energy Resources ◽  
Storage Unit

This article presents, a load management system is designed and implemented to integrate renewable energy resources (RES) (solar and wind), which manage the load according to the supply/demand and the user's priorities. The system is implemented on a hybrid system integrating wind energy, solar energy, utility supply, and battery energy storage system. Load management is carried out via switching of the loads. The sources can also be turned ON and OFF. During excess power, the battery module works as an energy storage unit or backup energy supply unit during demand. Loads can be turned ON and OFF wirelessly via GSM. The grid operator can switch the loads by simply sending a command via a short service message (SMS). In the end, the system is tested, and the results are presented. The hybrid system is simulated in MATLAB/Simulink first and then hardware implementation is carried out, which involves integrating renewable resources via converters and load management by switching using a microcontroller (Arduino).

Inclusion of Energy Storage System with Renewable Energy Resources in Distribution Networks

2021 ◽  
pp. 281-327
Author(s):  
Rayees Ahmad Thokar ◽  
Vipin Chandra Pandey ◽  
Nikhil Gupta ◽  
K. R. Niazi1 ◽  
Anil Swarnkar ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Storage System ◽  
Distribution Networks ◽  
Energy Storage System ◽  
Energy Resources ◽  
Renewable Energy Resources

scholarly journals Control of an isolated microgrid including renewable energy resources

2020 ◽  
Vol 17 (3) ◽  
pp. 297-312
Author(s):  
Omar Feddaoui ◽  
Riad Toufouti ◽  
Djamel Labed ◽  
Salima Meziane
Keyword(s):  
Renewable Energy ◽  
Rural Areas ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Power Stations ◽  
Distributed Generators ◽  
Logic Control ◽  
Islanded Mode

It is now more then a choice to use small-distributed generators (DGs) based on renewable energy resources (RES) due to their benefits in minimizing environmental problems and simplifying power system planning and operation. The integration of DGs in the main grid or in forming a standalone microgrid (MG) is increasing day by day and became as an alternative solution to large conventional central power stations and as a key for the electrification of rural areas. This paper presents an overall comparison of controlling the MG system combining between different DGs in islanded mode. Energy management system (EMS) applied is mainly an essential task to maintain an ideal flow of energy in between generation and consumption, many are strategies to do so, the artificial intelligence (AI) (highlighted) is one of the most advantages methods to help sizing, optimizing, and power energy managing. To solve this problem in this paper we present a Fuzzy Logic Control of isolated MG in comparison with a classic PI control system to see the different influences in maintaining stability in voltage and frequency output especially in the standalone application. The considered HRES combines a wind turbine (WT) and photovoltaic (PV) and an energy storage system (ESS). Simulation results obtained from MATLAB/Simulink environment demonstrates the effectiveness of the proposed intelligent artificial algorithm.

THE ANALYSIS OF OPERATION MODES OF ENERGY STORES IN AUTONOMOUS HYBRID POWER PLANTS WITH RENEWABLE ENERGY RESOURCES

2018 ◽  
pp. 55-67
Author(s):  
S. G. Obukhov ◽  
I. A. Plotnikov ◽  
V. G. Masolov
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Low Frequency ◽  
Rechargeable Batteries ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Hybrid Power ◽  
Operation Modes ◽  
Energy Stores ◽  
Energy Store

The paper presents the results of the comparative analysis of operation modes of an autonomous hybrid power complex with/without the energy store. We offere the technique which defines the power characteristics of the main components of a hybrid power complex: the consumers of the electric power, wind power and photo-electric installations (the last ones have been constructed). The paper establishes that, in order to compensate the seasonal fluctuations of power in autonomous power systems with renewable energy resources, the accumulative devices are required, with a capacity of tens of MWh including devices that are capable to provide energy storage with duration about half a year. This allows abandoning the storage devices for smoothing the seasonal fluctuations in the energy balance.The analysis of operation modes of energy stores has shown that for a stock and delivery of energy on time intervals, lasting several hours, the accumulative devices with rather high values of charging and digit power aren't required. It allows using the lead-acid rechargeable batteries of the deep category for smoothing the daily peaks of surplus and a capacity shortage. Moreover, the analysis of operation modes of energy stores as a part of the hybrid complexes has demonstrated that in charging/digit currents of the energy store the low-frequency and high-frequency pulsations of big amplitude caused by changes of size of output power of the renewable power installations and loading are inevitable. If low-frequency pulsations (the period of tens of minutes) can partially be damped due to the restriction of size of the maximum charging current of rechargeable batteries, then it is essentially impossible to eliminate high-frequency pulsations (the period of tens of seconds) in the power systems with the only store of energy. The paper finds out that the combined energy store having characteristics of the accumulator in the modes of receiving and delivery of power on daily time intervals, and at the same time having properties of the supercondenser in the modes of reception and return of impulses of power on second intervals of time is best suited to requirements of the autonomous power complexes with renewable energy resources.

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