scholarly journals EPS-Ledger: Blockchain Hyperledger Sawtooth-Enabled Distributed Power Systems Chain of Operation and Control Node Privacy and Security

Electronics ◽  
2021 ◽  
Vol 10 (19) ◽  
pp. 2395
Author(s):  
Abdullah Ayub Khan ◽  
Asif Ali Laghari ◽  
De-Sheng Liu ◽  
Aftab Ahmed Shaikh ◽  
Dan-An Ma ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Monitoring System ◽  
Network Architecture ◽  
Power Grid ◽  
Privacy And Security ◽  
Distributed Power ◽  
Control Node ◽  
And Control ◽  
Bidirectional Power Flow

A distributed power system operation and control node privacy and security are attractive research questions that deliver electrical energy systems to the participating stakeholders without being physically connected to the grid system. The increased use of renewable energy in the power grid environment creates serious issues, for example, connectivity, transmission, distribution, control, balancing, and monitoring volatility on both sides. This poses extreme challenges to tackle the entire bidirectional power flow throughout the system. To build distributed monitoring and a secure control operation of node transactions in the real-time system that can manage and execute power exchanging and utilizing, balancing, and maintaining energy power failure. This paper proposed a blockchain Hyperledger Sawtooth enabling a novel and secure distributed energy transmission node in the EPS-ledger network architecture with a robust renewable power infiltration. The paper focuses on a cyber–physical power grid control and monitoring system of renewable energy and protects this distributed network transaction on the blockchain and stores a transparent digital ledger of power. The Hyperledger Sawtooth-enabled architecture allows stakeholders to exchange information related to power operations and control monitoring in a private ledger network architecture and investigate the different activities, preserved in the interplanetary file systems. Furthermore, we design, create, and deploy digital contracts of the cyber–physical energy monitoring system, which allows interaction between participating stakeholders and registration and presents the overall working operations of the proposed architecture through a sequence diagram. The proposed solution delivers integrity, confidentiality, transparency, availability, and control access of the distribution of the power system and maintains an immutable operations and control monitoring ledger by secure blockchain technology.

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

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 418 ◽  
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.

scholarly journals Active Synchronous Control Strategy of Distributed Power Grid Connection Based on Mobile Network

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Liu Zhang ◽  
Shaohua Ma ◽  
Yangyang Ge ◽  
Cailian Gu ◽  
Hao Wang
Keyword(s):  
Power System ◽  
Control Strategy ◽  
Control Method ◽  
Power Grid ◽  
Mobile Network ◽  
Large Power ◽  
Distributed Power ◽  
Synchronous Control ◽  
Grid Connection ◽  
Distributed Power System

This paper presents an active synchronous control scheme for distributed power grid connection based on the mobile network. This scheme avoids the disadvantages of the traditional control method, such as long waiting time and low reliability, and can meet the requirements of “the hotplug online” distributed power grid connection. The scheme uses the mobile network to collect and detect voltage slip information between the distributed power system and large power grid before operation. When the voltage slip cannot meet the requirements of grid connection, the side voltage information of the distributed power system is actively regulated. The amplitude difference and phase difference signals are, respectively, adjusted by PI, and the generated adjustment signals are, respectively, sent to the corresponding controllers through the mobile network with different weight coefficients. After the receiver receives the regulated signal, it changes the amplitude and frequency of its output voltage by shifting the pendent characteristic curve, so as to realize the distributed power system side voltage and the large power grid side voltage eventually. Finally, simulation analysis and experiments are used to verify the effectiveness and practicability of the active synchronous control strategy.

scholarly journals Implementation of Controlled Islanding Scheme for Self-healing Smart Grid

2018 ◽  
Vol 7 (3.12) ◽  
pp. 945 ◽  
Author(s):  
Abul Khair ◽  
Mohd Rihan ◽  
Mohd Zuhaib
Keyword(s):  
Smart Grid ◽  
Power System ◽  
Power Grid ◽  
Wide Area ◽  
Cascading Failure ◽  
Self Healing ◽  
Monitoring And Control ◽  
Controlled Islanding ◽  
On Line ◽  
And Control

With increase in deregulations and renewable sources of generation, the power system network is leading towards more geographical spread and interconnectedness. This causes significant challenges requiring on-line monitoring and control. It also provides a path for disturbances to propagate causing cascading failure, even blackouts. Wide area detection of potential island formation and controlled separation is considered as an effective tool against a blackout under severe disturbances. In the present work one line remaining algorithm has been utilized for implementation of controlled islanding in a section of Indian power grid.  

scholarly journals Digital modeling and control of multiple time-delayed distributed power grid

2012 ◽  
Vol 36 (9) ◽  
pp. 4118-4134 ◽  
Author(s):  
V.V. Joshi ◽  
L.B. Xie ◽  
J.J. Park ◽  
L.S. Shieh ◽  
Y.H. Chen ◽  
...  
Keyword(s):  
Power Grid ◽  
Multiple Time ◽  
Distributed Power ◽  
Modeling And Control ◽  
Digital Modeling ◽  
And Control

scholarly journals A Systematic PVQV-Curves Approach for Investigating the Impact of Solar Photovoltaic-Generator in Power System Using PowerWorld Simulator

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2662 ◽  
Author(s):  
Abdullahi Oboh Muhammed ◽  
Muhyaddin Rawa
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Power System ◽  
Power Factor ◽  
Reactive Power ◽  
Power Grid ◽  
Percentage Change ◽  
Droop Control ◽  
Solar Photovoltaic ◽  
The Impact

With the recent growing interest in renewable energy integrated power systems across the globe for the various economic and environmental benefits, it is also significant to consider their influence on voltage stability in power systems. Therefore, this paper reports the static voltage stability impact of solar photovoltaic generation on power networks using PowerWorld simulator power-voltage (P–V)- and voltage-reactive power (V–Q)-curves to investigate the renewable energy generator model performance suitability. The impact of varying power factor control and static voltage droop control of a photovoltaic plant on the maximum generated power, threshold voltage profile and reactive power marginal loading has been examined. Besides, the concept of percentage change in voltage-power sensitivity has been systematically utilized to determine the optimal location for the solar photovoltaic generator on the power grid and the feasible penetrations have been defined for selected system buses. From the simulation results it can be concluded that in a steady-state analysis of the grid integrated power system the effects of power factor (pf) control and voltage droop control should be considered by power grid engineers for effective system operation and, equally, the application of percentage change in voltage-power sensitivity should be extended to real networks to determine the best positions for multiple installations of renewable energy resources.

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