scholarly journals Co‐optimization of active power curtailment, load shedding and spinning reserve deficits through hybrid approach: Comparison of electrochemical storage technologies

2021 ◽  
Author(s):  
Pavlos Nikolaidis ◽  
Andreas Poullikkas
Keyword(s):  
Hybrid Approach ◽  
Active Power ◽  
Load Shedding ◽  
Spinning Reserve ◽  
Electrochemical Storage ◽  
Storage Technologies

Recent Advancements of Functional Gel Polymer Electrolytes for Rechargeable Lithium Metal Batteries

2021 ◽  
Author(s):  
Sha Fu ◽  
Lan-Lan Zuo ◽  
Peng-Sheng Zhou ◽  
Xue-Jiao Liu ◽  
Qiang Ma ◽  
...  
Keyword(s):  
Energy Density ◽  
Polymer Electrolytes ◽  
High Energy ◽  
High Energy Density ◽  
Gel Polymer Electrolytes ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Metallic Lithium ◽  
Electrochemical Storage ◽  
Storage Technologies

Lithium metal batteries (LMBs) as the next generation promising high energy density alternatives among electrochemical storage technologies have received worldwide attention. However, the incompatibility between metallic lithium and traditional liquid...

Under Frequency Load Shedding Techniques for Future Smart Power Systems

2019 ◽  
pp. 188-202
Author(s):  
H. H. Alhelou
Keyword(s):  
Power Systems ◽  
Power System ◽  
Active Power ◽  
Load Shedding ◽  
System Stability ◽  
Special Focus ◽  
Power Demand ◽  
Synchronous Generators ◽  
Smart Power ◽  
System Frequency

It is critical for today's power system to remain in a state of equilibrium under normal conditions and severe disturbances. Power imbalance between the load and the generation can severely affect system stability. Therefore, it is necessary that these imbalance conditions be addressed in the minimum time possible. It is well known that power system frequency is directly proportional to the speed of rotation of synchronous machines and is also a function of the active power demand. As a consequence, when active power demand is greater than the generation, synchronous generators tends to slow down and the frequency decreases to even below threshold if not quickly addressed. One of the most common methods of restoring frequency is the use of under frequency load shedding (UFLS) techniques. In this chapter, load shedding techniques are presented in general but with special focus on UFLS.

scholarly journals Impact of Grid-Scale Electricity Storage and Electric Vehicles on Renewable Energy Penetration: A Case Study for Italy

Energies ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1303 ◽  
Author(s):  
Sara Bellocchi ◽  
Michele Manno ◽  
Michel Noussan ◽  
Michela Vellini
Keyword(s):  
Electric Vehicles ◽  
Low Cost ◽  
Energy System ◽  
Heat Pumps ◽  
System Perspective ◽  
Electricity Storage ◽  
Italian Case ◽  
Electrochemical Storage ◽  
Power To Gas ◽  
Storage Technologies

Storage technologies are progressively emerging as a key measure to accommodate high shares of intermittent renewables with a view to guarantee their effective integration towards a profound decarbonisation of existing energy systems. This study aims to evaluate to what extent electricity storage can contribute to a significant renewable penetration by absorbing otherwise-curtailed renewable surplus and quantitatively defines the associated costs. Under a Smart Energy System perspective, a variety of future scenarios are defined for the Italian case based on a progressively increasing renewable and storage capacity feeding an ever-larger electrified demand mostly made up of electric vehicles and, to some extent, heat pumps and power-to-gas/liquid technologies. Results are compared in terms of crucial environmental and techno-economic indicators and discussed with respect to storage operating parameters. The outcome of this analysis reveals the remarkable role of electricity storage in increasing system flexibility and reducing, in the range 24–44%, the renewable capacity required to meet a given sustainability target. Nonetheless, such achievements become feasible only under relatively low investment and operating costs, condition that excludes electrochemical storage solutions and privileges low-cost alternatives that at present, however, exist only at a pilot or demonstration scale.

An adaptive approach to load shedding and spinning reserve control during underfrequency conditions

1996 ◽  
Vol 11 (4) ◽  
pp. 1805-1810 ◽  
Author(s):  
V.N. Chuvychin ◽  
N.S. Gurov ◽  
S.S. Venkata ◽  
R.E. Brown
Keyword(s):  
Load Shedding ◽  
Spinning Reserve ◽  
Adaptive Approach

An Underfrequency Load Shedding Scheme with Minimal Knowledge of System Parameters

2015 ◽  
Vol 16 (1) ◽  
pp. 33-46 ◽  
Author(s):  
Athbel Joe ◽  
S. Krishna
Keyword(s):  
Power Systems ◽  
Power System ◽  
New England ◽  
Load Shedding ◽  
Spinning Reserve ◽  
Generator System ◽  
Pass Filter ◽  
Low Pass Filter ◽  
System Parameters ◽  
Frequency Measurements

Abstract Underfrequency load shedding (UFLS) is a common practice to protect a power system during large generation deficit. The adaptive UFLS schemes proposed in the literature have the drawbacks such as requirement of transmission of local frequency measurements to a central location and knowledge of system parameters, such as inertia constant H and load damping constant D. In this paper, a UFLS scheme that uses only the local frequency measurements is proposed. The proposed method does not require prior knowledge of H and D. The scheme is developed for power systems with and without spinning reserve. The proposed scheme requires frequency measurements free from the oscillations at the swing mode frequencies. Use of an elliptic low pass filter to remove these oscillations is proposed. The scheme is tested on a 2 generator system and the 10 generator New England system. Performance of the scheme with power system stabilizer is also studied.

Under Frequency Load Shedding Plan in Active Power Systems: Analysis and Innovative Proposals

2018 ◽  
Author(s):  
T. Baffa Scirocco ◽  
G. Bruno ◽  
L. Caciolli ◽  
G. Giannuzzi ◽  
R. Zaottini ◽  
...  
Keyword(s):  
Power Systems ◽  
Systems Analysis ◽  
Active Power ◽  
Load Shedding

scholarly journals A New Load Shedding Scheme with Consideration of Distributed Energy Resources Active Power Ramping Capability

2021 ◽  
pp. 1-1
Author(s):  
Qiteng Hong ◽  
Liang Ji ◽  
Steven M Blair ◽  
Dimitrios Tzelepis ◽  
Mazaher Karimi ◽  
...  
Keyword(s):  
Active Power ◽  
Load Shedding ◽  
Energy Resources ◽  
Distributed Energy Resources ◽  
Distributed Energy
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