Energy Storage for Peak Power and Increased Revenue

2017 ◽  
pp. 181-194
Author(s):  
Bahman Zohuri
Keyword(s):  
Energy Storage ◽  
Peak Power

scholarly journals Fault-Tolerant Control in a Peak-Power Reduction System of a Traction Substation with Multi-String Battery Energy Storage System

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4565
Author(s):  
Marcin Szott ◽  
Marcin Jarnut ◽  
Jacek Kaniewski ◽  
Łukasz Pilimon ◽  
Szymon Wermiński
Keyword(s):  
Energy Storage ◽  
Peak Power ◽  
Fault Tolerant ◽  
Storage System ◽  
Energy Storage System ◽  
Power Reduction ◽  
Battery Energy Storage System ◽  
Battery Energy Storage ◽  
Traction Substation ◽  
Battery Energy

This paper introduces the concept of fault-tolerant control (FTC) of a multi-string battery energy storage system (BESS) in the dynamic reduction system of a traction substation load (DROPT). The major task of such a system is to reduce the maximum demand for contracted peak power, averaged for 15 min. The proposed concept, based on a multi-task control algorithm, takes into account: a three-threshold power limitation of the traction substation, two-level reduction of available power of a BESS and a multi-string structure of a BESS. It ensures the continuity of the maximum peak power demand at the contracted level even in the case of damage or disconnection of at least one chain of cells of the battery energy storage (BES) or at least one converter of the power conversion system (PCS). The proposed control strategy has been tested in a model of the system for dynamic reduction of traction substation load with a rated power of 5.5 MW. Two different BESS implementations have been proposed and several possible cases of failure of operations have been investigated. The simulation results have shown that the implementation of a multi-string BESS and an appropriate control algorithm (FTC) may allow for maintenance of the major assumption of DROPT, which is demanded power reduction (from 3.1 MW to 0.75 MW), even with a reduction of the BESS available power by at least 25% and more in the even in fault cases.

scholarly journals Stationary energy storage system in a 3 kV DC – the conception comparison

2018 ◽  
Vol 180 ◽  
pp. 02013
Author(s):  
Włodzimierz Jefimowski
Keyword(s):  
Energy Storage ◽  
Peak Power ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Utilization ◽  
Power Demand ◽  
Dc System ◽  
Traction Substation ◽  
Stationary Energy ◽  
Regenerative Energy

The paper presents the research results of a few different conception of stationary energy storage system in a 3 kV DC system. The most attention is focused on the comparison between two topologies of the ESS: energy storage system with supercapacitor and with supercapacitor and LFP battery. The variants are compared in terms of energy saving and peak power demand reduction. The implementation of ESS with SC results the decrease of active energy drawn from traction substation. Meanwhile the implementation of ESS with SC and LFP battery leads to achieving of two aims - decreasing of active energy consumption by maximization of regenerative energy utilization and reduction of 15 - min. peak power demand of traction substation.

Management Strategies for a Compressed Air Energy Storage Plant

2006 ◽  
Author(s):  
Gianmario L. Arnulfi ◽  
Martino Marini
Keyword(s):  
Energy Storage ◽  
Gas Turbines ◽  
Peak Power ◽  
Supply And Demand ◽  
Management Strategies ◽  
Market Price ◽  
Previous History ◽  
Brayton Cycle ◽  
The Hours ◽  
Turbo Expander

Energy storage can balance supply and demand over different time scales, with technical and economical benefits. In the present paper, commercial gas turbines, just modified for storage purposes, are considered. The possibility to improve their profitability in an utility perspective is investigated. The adopted strategy is based on a fair mix of different working states (charging, discharging, stand by or mere Brayton cycle operation), according to the instant energy market price, the previous history (storage level) and the plant features (reservoir and GT size). A simple mathematical model of the plant was conceived and a dynamic self-adjusting abacus was developed in order to select a suitable sequence of working ways. The expected results consist in the improvement of the daily cash flow and in the peak power augmentation. Both of them are due to the chance of exploiting a turbo expander not loaded with the compressor driving during the hours when energy price is the highest.

Economic feasibility of battery energy storage systems for replacing peak power plants for commercial consumers under energy time of use tariffs

2020 ◽  
Vol 29 ◽  
pp. 101373 ◽  
Author(s):  
Julio Romel Martinez-Bolanos ◽  
Miguel Edgard Morales Udaeta ◽  
André Luiz Veiga Gimenes ◽  
Vinícius Oliveira da Silva
Keyword(s):  
Energy Storage ◽  
Peak Power ◽  
Power Plants ◽  
Storage Systems ◽  
Economic Feasibility ◽  
Energy Storage Systems ◽  
Battery Energy Storage ◽  
Battery Energy Storage Systems ◽  
Battery Energy

Battery Discharging Power Control in a Double-Wound Flywheel System Applied to Electric Vehicles

2011 ◽  
Vol 12 (1) ◽  
Author(s):  
Janaína Goncalves de Oliveira ◽  
Johan Abrahamsson ◽  
Hans Bernhoff
Keyword(s):  
Energy Storage ◽  
Electric Vehicles ◽  
Peak Power ◽  
Low Voltage ◽  
Good Alternative ◽  
High Energy ◽  
High Energy Density ◽  
Power Capacity ◽  
Control Logic ◽  
Efficient System

Flywheel Energy Storage Systems (FESS) are a good alternative for power handling and energy storage in hybrid and electric vehicles. The combination of a FESS and a battery has several advantages, such as higher peak power capacity and reduced number of charging/discharging cycles in the battery. Nevertheless, batteries have a significant effect on the performance of the system and the control of the flywheel-battery link should be optimized in order to increase the system efficiency.The FESS investigated in this paper has its novelty in the use of a double wound flywheel machine which divides the system in two different voltage/power levels. High-Voltage/Power (HV) side connects the flywheel machine to the wheel motor and Low-Voltage/Power (LV) side connects the flywheel machine to the battery.The present paper focuses on the converter system and the control logic which regulates battery discharging process and the flywheel rotational speed. Emphasis has been given to the overall power/energy management of the system. Simulations and experimental results show that an ON/OFF battery control allows a highly efficient system, requiring a robust speed control and high energy density for the flywheel machine.

New Compressed Air Energy Storage Concept Improves the Profitability of Existing Simple Cycle, Combined Cycle, Wind Energy, and Landfill Gas Power Plants

2004 ◽  
Author(s):  
Michael Nakhamkin ◽  
Ronald H. Wolk ◽  
Sep van der Linden ◽  
Manu Patel
Keyword(s):  
Energy Storage ◽  
Wind Energy ◽  
Peak Power ◽  
Renewable Energy Sources ◽  
Landfill Gas ◽  
Combined Cycle ◽  
Compressed Air ◽  
Full Potential ◽  
Compressed Air Energy Storage ◽  
Ambient Temperatures

The proposed novel compressed air energy storage (CAES) concept is based on the utilization of capacity reserves of combustion turbine (CT) and combined cycle (CC) plants for the peak power generation, instead of development of highly customized and expensive turbo-machinery trains. These power reserves are particularly high during high ambient temperatures that correspond to typical summer peak power requirements. The stored compressed air will be injected into the CT after the compressor diffuser to supplement the reduced (due to high ambient temperature or altitudes) mass flow, through the turbine to the full potential (typically achieved at low ambient temperatures). The alternative concept, with stored compressed air, is humidification before injection into the CT, this reduces the auxiliary compressor size, the storage volume and associated costs. Power increase of up to 25% can be realized, coincidental with that which is typical for a CAES plant, significant reduction in the heat rate and emissions. The novel CAES concept reduces specific plant costs by a factor of two, which makes it particularly effective for integration with renewable energy sources, like wind energy plants and landfill gas (LFG) plants. The paper also presents an alternative small capacity CAES plant, which is based on using smaller man-made storage facilities (high pressure pipes and/or vessels), either underground or above ground that can be readily constructed at CT sites without specific geological requirements. The latter part of this paper specifically concentrates on integration of CAES with wind and landfill gas (LFG) plants.

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