American Electric Power System Electric Thermal Storage Program: an Evaluation of the Impact on the Transmission and Distribution Systems

Efforts to reduce greenhouse gas emissions constitute a worldwide trend. According to this trend, there are many plans in place for the replacement of conventional electric power plants operating using fossil fuels with renewable energy sources (RESs). Owing to current needs to expand the RES penetration in accordance to a new National power system plan, the importance of RESs is increasing. The RES penetration imposes various impacts on the power system, including transient stability. Furthermore, the fact that they are distributed at multiple locations in the power system is also a factor which makes the transient impact analysis of RESs difficult. In this study, the transient impacts attributed to the penetration of RESs are analyzed and compared with the conventional Korean electric power system. To confirm the impact of the penetration of RESs on transient stability, the effect was analyzed based on a single machine equivalent (SIME) configuration. Simulations were conducted in accordance to the Korean power system by considering the anticipated RES penetration in 2030. The impact of RES on transient stability was provided by a change in CCT by increasing of the RES penetration.

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The influence of the global electric power system on terrestrial biodiversity

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.1909269116 ◽

2019 ◽

Vol 116 (51) ◽

pp. 26078-26084 ◽

Cited By ~ 3

Author(s):

Robert A. Holland ◽

Kate Scott ◽

Paolo Agnolucci ◽

Chrysanthi Rapti ◽

Felix Eigenbrod ◽

...

Keyword(s):

Climate Change ◽

Power System ◽

Supply Chains ◽

Electric Power ◽

Structural Changes ◽

Electric Power System ◽

Power Sector ◽

Total Contribution ◽

Electric Power Sector ◽

The Impact

Given its total contribution to greenhouse gas emissions, the global electric power sector will be required to undergo a fundamental transformation over the next decades to limit anthropogenic climate change to below 2 °C. Implications for biodiversity of projected structural changes in the global electric power sector are rarely considered beyond those explicitly linked to climate change. This study uses a spatially explicit consumption-based accounting framework to examine the impact of demand for electric power on terrestrial vertebrate biodiversity globally. We demonstrate that the biodiversity footprint of the electric power sector is primarily within the territory where final demand for electric power resides, although there are substantial regional differences, with Europe displacing its biodiversity threat along international supply chains. The relationship between size of individual components of the electric power sector and threat to biodiversity indicates that a shift to nonfossil sources, such as solar and wind, could reduce pressures on biodiversity both within the territory where demand for power resides and along international supply chains. However, given the current levels of deployment of nonfossil sources of power, there is considerable uncertainty as to how the impacts of structural changes in the global electric power system will scale. Given the strong territorial link between demand and associated biodiversity impacts, development of strong national governance around the electric power sector represents a clear route to mitigate threats to biodiversity associated with efforts to decarbonize society over the coming century.

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Electric Power System Operation Mechanism with Energy Routers Based on QoS Index under Blockchain Architecture

Energies ◽

10.3390/en13020418 ◽

2020 ◽

Vol 13 (2) ◽

pp. 418 ◽

Cited By ~ 2

Author(s):

Gangjun Gong ◽

Zhening Zhang ◽

Xinyu Zhang ◽

Nawaraj Kumar Mahato ◽

Lin Liu ◽

...

Keyword(s):

Renewable Energy ◽

Power System ◽

Electric Power ◽

Distribution Networks ◽

Electric Power System ◽

Control Flow ◽

Utilization Efficiency ◽

Stable Operation ◽

Bidirectional Power Flow ◽

Transmission And Distribution

With the integration of highly permeable renewable energy to the grid at different levels (transmission, distribution and grid-connected), the volatility on both sides (source side and load side) leading to bidirectional power flow in the power grid complicates the control mechanism. In order to ensure the real-time power balance, energy exchange, higher energy utilization efficiency and stability maintenance in the electric power system, this paper proposes an integrated application of blockchain technology on energy routers at transmission and distribution networks with increased renewable energy penetration. This paper focuses on the safe and stable operation of a highly penetrated renewable energy grid-connected power system and its operation. It also demonstrates a blockchain-based negotiation model with weakly centralized scenarios for “source-network-load” collaborative scheduling operations; secondly, the QoS (quality of service) index of energy flow control and energy router node doubly-fed stability control model were designed. Further, it also introduces the MOPSO (multi-objective particle swarm optimization) algorithm for power output optimization of multienergy power generation; Thirdly, based on the blockchain underlying architecture and load prediction value constraints, this paper puts forward the optimization mechanism and control flow of autonomous energy coordination of b2u (bottom-up) between router nodes of transmission and distribution network based on blockchain.

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Impact of micro hydro power plants on transient stability for the micro grid 20 kV system

Indonesian Journal of Electrical Engineering and Computer Science ◽

10.11591/ijeecs.v24.i3.pp1278-1287 ◽

2021 ◽

Vol 24 (3) ◽

pp. 1278

Author(s):

Syarifuddin Nojeng ◽

Syamsir Syamsir ◽

Reny Murniati

Keyword(s):

Power Plant ◽

Power System ◽

Electric Power ◽

Transient Stability ◽

Interconnection Network ◽

Electric Power System ◽

Hydro Power ◽

Micro Grid ◽

The Stability ◽

The Impact

Transient stability analysis is conducted to determine the ability of the electric power system in maintaining the operating stability after a major disturbance. The disturbance can be trigger an impact on the stability of the rotor angle, voltage, and system frequency which can cause loss of synchronization. In this paper, the impact of the interconnection of the Tombolo-Pao mini hydro power plant (MHPP) on the stability of the system was analyzed by several scenarios to determine the behavior of system parameters in a 20 kV system interconnection network. This research is an implementation of regulatory provisions relating to the study of the connection to the PLN distribution network through by regulator. Based on the result of simulation study, transient stability of generators at TomboloPao power plant about 0.1 second, will not occur with network configuration according to modeling activation of anti-islanding protection of Tombolo Pao Power Plant which is set by 2 second. The simulation results show that the location of the disturbance in the electric power system has been influenced by the behavior of the power plant (synchronous generator) which can lead to the instability of the micro-hydro connected to the micro-grid system 20 kV.

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