scholarly journals Boundary Detection and Enhancement Strategy for Power System Bus Bar Stabilization—Investigation under Fault Conditions for Islanding Operation

Energies ◽  
2018 ◽  
Vol 11 (4) ◽  
pp. 889 ◽  
Author(s):  
Aref Pouryekta ◽  
Vigna Ramachandaramurthy ◽  
Sanjeevikumar Padmanaban ◽  
Frede Blaabjerg ◽  
Josep Guerrero
Keyword(s):  
Power System ◽  
Boundary Detection ◽  
Islanding Operation

Optimizing the Allocation of the Relay Setting Related to Power Grid and over Frequency Generator Tripping Scheme

2014 ◽  
Vol 986-987 ◽  
pp. 404-411
Author(s):  
Qi Yang ◽  
Xin Zeng ◽  
Qing Kui Guo ◽  
Yong Yu Yuan ◽  
Jian Jun Sun ◽  
...  
Keyword(s):  
Power System ◽  
Steam Turbine ◽  
Power Unit ◽  
Program Analysis ◽  
Thermal Power ◽  
Protection Device ◽  
Power Network ◽  
Whole Process ◽  
Islanding Operation ◽  
Frequency Generator

Through the summary of typical accident, the problem between the over speed protection device of thermal power unit steam turbine and over frequency generator tripping measure is analyzed in island operation of sending ends of regional grid. The optimizing allocation principle between over frequency generator tripping measure and over speed protection equipment is put forward. By a variety of program analysis and comparison, the optimizing scheme is given. Finally, the typical models of thermal power unit steam turbine over speed protection are established in software. Based on a practical power system as an example, the whole process of islanding is simulated. Checking the coordination with existing over frequency generator tripping measure and the relay setting related to power network in the islanding operation, the validity and practicability of the optimal scheme and principle are analyzed. With the method, the regional grid will remain safe and stable.

scholarly journals Boundary Detection and Enhancement of Islanding Operation Investigation Under Fault Condition

2017 ◽  
Author(s):  
Aref Pouryekta ◽  
Vigna K. Ramachandaramurthy ◽  
Sanjeevikumar Padmanaban ◽  
Lucian MIHET-POPA
Keyword(s):  
Distribution Systems ◽  
Dynamic Performance ◽  
Boundary Detection ◽  
Sensitivity Factor ◽  
Voltage Sensitivity ◽  
Autonomous Operation ◽  
System A ◽  
Autonomous Mode ◽  
Dynamic Voltage ◽  
Islanding Operation

Distribution systems can form islands when faults occur. Each island represents a subsection with variable boundaries subject to the location of a fault(s) in the system. A subsection with variable boundaries is referred to as island in this paper. For operation in autonomous mode, it is imperative to detect the island configurations and stabilize these subsections. This paper presents a novel scheme for the detection of islanding boundaries and stabilizing the system during autonomous operation. In the first stage, a boundary detection method is proposed to detect the configuration of the island. In the second stage a dynamic voltage sensitivity factor (DVSF) is proposed to assess the dynamic performance of the system. In the third stage, a wide area load shedding program is adopted based on DVSF to shed the load in weak busbars and stabilize the system. The proposed scheme is validated and tested on a generic 18-bus system using a combination of EMTDC/PSCAD and MATLAB softwares.

scholarly journals The Analysis of Technical Trend in Islanding Operation, Harmonic Distortion, Stabilizing Frequency, and Voltage of Islanded Entities

Resources ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 14 ◽  
Author(s):  
Thanh Son Tran ◽  
Duc Tuyen Nguyen ◽  
Goro Fujita
Keyword(s):  
Power System ◽  
Harmonic Distortion ◽  
Future Research ◽  
Self Healing ◽  
High Quality ◽  
Distributed Generations ◽  
The Future ◽  
Islanding Operation ◽  
Voltage Frequency ◽  
Continuous Power

This paper focuses on autonomous multi-islanded entities and the seamless reconnection to the main grid as the self-healing ability of the future power system. The minimization of power quality issues (mainly that of voltage, frequency, and harmonics) in such entities based on controllers, with or without intercommunication, is also an important part of this paper. The future power system, with the significant penetration of distributed generations (DGs), can rapidly respond to any problem occurring within it by separating into autonomous islanded entities to prevent the disconnection of DGs. As a result, high-quality and continuous power is supplied to consumers. Finally, future research that is necessary for the realization of the future power system is discussed.

scholarly journals Power System Stability for the Islanding Operation of Micro Grids

2016 ◽  
Vol 9 (38) ◽  
Author(s):  
, Samia ◽  
Sharma Kamal Kant ◽  
Kaur Inderpreet ◽  
Singh Balwinder
Keyword(s):  
Power System ◽  
Power System Stability ◽  
System Stability ◽  
Islanding Operation ◽  
Micro Grids
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