Multi-PV Interfaced Distribution Network fault analysis method considering LVRT control strategy

2021 ◽  
Author(s):  
J. Deng ◽  
S. Liang ◽  
L. Z. Zhu ◽  
L. Yao ◽  
F. Duan ◽  
...  
Keyword(s):  
Control Strategy ◽  
Distribution Network ◽  
Fault Analysis ◽  
Analysis Method ◽  
Network Fault

An Application of Heuristic-Search Based Tree Model in Fault Analysis of Distribution Network

2012 ◽  
Vol 614-615 ◽  
pp. 1827-1832
Author(s):  
Cai Qiang Wang ◽  
Jie Li ◽  
Qing Bin Wang ◽  
Song Hu
Keyword(s):  
Power Supply ◽  
Heuristic Search ◽  
Fault Location ◽  
High Reliability ◽  
Distribution Network ◽  
Processing System ◽  
Fault Analysis ◽  
Power System Security ◽  
Tree Model ◽  
Network Fault

Along with the increase of need for high reliability of the power system security, it is important to build up a distribution fault analysis network and processing system, which can provide decision-making help for dispatching personnel. This paper introduced framework of the distribution network fault analysis and processing system, and analyze the fault location, isolation, generation and evaluation of power supply reconfiguration strategy. Tree model and Heuristic search were used for fault location and power supply route switching strategy.

Based on the Integration of Power Grid Topology Model of Distribution Network Fault Analysis Applications

2014 ◽  
Vol 1006-1007 ◽  
pp. 1194-1198
Author(s):  
De Quan Yao ◽  
Yong Tao ◽  
Hao Ran Yu
Keyword(s):  
Power Grid ◽  
Distribution Network ◽  
Fault Analysis ◽  
Repair Service ◽  
Equipment Operation ◽  
Customer Information ◽  
Grid Topology ◽  
Topology Model ◽  
Network Fault ◽  
Fault Information

On the basis of grid GIS platform, in the distribution network repair platform implementation is based on the integration of power grid topology model of distribution network fault analysis mechanism, a combination of customer information, grid electricity equipment operation information such as all kinds of information, the cause of the problem of fault repair service to provide intelligence, integration judge method, improve the accuracy of the fault forecasting speed, the fault information, improve the efficiency of fault repair, shorten fault repair time, reduce the loss of electricity, improve customer satisfaction.

Efficient network fault analysis method for unbalanced microgrid systems

2018 ◽  
Vol 103 ◽  
pp. 89-101
Author(s):  
Ting-Yen Hsieh ◽  
Tsai-Hsiang Chen ◽  
Nien-Che Yang ◽  
Wei-Jen Lee
Keyword(s):  
Fault Analysis ◽  
Analysis Method ◽  
Network Fault

An improved fault analysis method based on bus-voltage thresholds determination for distribution networks with distributed generators

2021 ◽  
Vol 4 (2) ◽  
pp. first
Author(s):  
Phúc Duy Lê ◽  
Dương Minh Bùi ◽  
Minh Ngọc Đoàn ◽  
Phương Thanh Nguyễn
Keyword(s):  
Distribution Network ◽  
Distribution Networks ◽  
Fault Analysis ◽  
Fault Current ◽  
Analysis Method ◽  
Distributed Generators ◽  
Protection Systems ◽  
Bus Voltage ◽  
Current Calculation ◽  
Operation Characteristics

Integration of distributed generators (DGs) into a distribution network (DN) can impact on the reliability operation and stability of protection systems. Depending on DG types, their installed locations, and operation states, fault current values in the distribution network can be significantly changed such that protective devices can inaccurately operate. Traditional fault analysis methods have not considered the presence of distributed generators and their operation characteristics, bidirectional power flows and change in bus-voltage values in the DN. Therefore, improvement of fault current calculation methods is necessary to fast, automatically and accurately determine fault current values in the DN with distributed generators. Hence, this paper develops an improved fault analysis method based on bus-voltage thresholds determination for distribution networks with DGs. The bus-voltage thresholds can be evaluated by determining load power confidence intervals (LPCI), and fault current thresholds will be then calculated in the DN with DGs. Based on a developed LPCI calculation tool and E-terra distribution software, achieved simulation results have validated the effectiveness of fault analysis method based on bus-voltage thresholds for distribution networks in case of considering types, locations and operation states of various distributed generators.

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