Design of fuzzy power system for distributed generation system

2011 ◽  
Author(s):  
Aihua Wang
Keyword(s):  
Power System ◽  
Distributed Generation ◽  
Generation System

The Optimal Dispatch of LED Lamps Based on Gradient Projection Method

2014 ◽  
Vol 687-691 ◽  
pp. 3530-3535
Author(s):  
Shu Lei Deng ◽  
Ming Xu ◽  
Jia Jie Wu
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Distributed Generation ◽  
Projection Method ◽  
Energy Generation ◽  
Gradient Projection ◽  
Gradient Projection Method ◽  
Generation System ◽  
Optimal Dispatch ◽  
Renewable Energy Generation

With the rapid development of distributed generation technology,a lot of renewable wind and solar power connect to the power system. Due to the random and intermittent characteristics of renewable energy, it brings a big challenge to the security and economical operation of power system. With the limits of climbing speed, non-renewable energy generation units cannot respond quickly to the change in the output of renewable energy generation units. Owing to the advantages of high luminous efficiency and long lifetime, LED lamps get rapid promotion and application in the smart distribution network. Based on the optical and electrical unique properties of LED lamps, the author studies the effects on the power system for a large number of LED lamps connecting to the distributed generation system, and establishing the mathematical model of LED lamp participating in the optimal dispatch of distributed generation system. In order to solve the model, the author uses gradient projection method. Through the SIMULINK simulation, it demonstrates that the algorithm has a fast convergence speed and high precision, and verifies the correctness and feasibility of the algorithm.

A Review on Development and Operational Strategy of Fault Current Limiters

2016 ◽  
Vol 1 (1) ◽  
pp. 1 ◽  
Author(s):  
S.P. Janani Priyadharshna ◽  
T. Venkatesan
Keyword(s):  
Power System ◽  
Distributed Generation ◽  
Recent Trend ◽  
Short Circuit ◽  
Detailed Knowledge ◽  
Fault Current ◽  
Voltage Profile ◽  
Generation System ◽  
Fault Current Limiters ◽  
Manageable Level

Distributed Generation (DG) plays a major role in existing power system. When such distributed generation system is interconnected with micro-grid improves voltage profile, power quality but at the same time results in fault conditions. Among various faults occurring in the power system, short circuit faults are the most predominant case. This results in the increase in flow of the fault current in the line. Also the equipments installed in such a line get damaged internally due to flow of excess fault current. Therefore in order to improve the transient conditions and limit the fault current to a manageable level, a device called Fault Current Limiters (FCLs) are being used in recent trend. This paper reviews about various fault current limiters, their development, characteristics and operating performance in the system. It gives a detailed knowledge about various operations performed by fault current limiters that is compared with other conventional techniques.

scholarly journals A Review on Development and Operational Strategy of Fault Current Limiters

2015 ◽  
Vol 16 (1) ◽  
pp. 145
Author(s):  
S.P. Janani Priyadharshna ◽  
T. Venkatesan
Keyword(s):  
Power System ◽  
Distributed Generation ◽  
Recent Trend ◽  
Short Circuit ◽  
Detailed Knowledge ◽  
Fault Current ◽  
Voltage Profile ◽  
Generation System ◽  
Fault Current Limiters ◽  
Manageable Level

<p>Distributed Generation (DG) plays a major role in existing power system. When such distributed generation system is interconnected with micro-grid improves voltage profile, power quality but at the same time results in fault conditions. Among various faults occurring in the power system, short circuit faults are the most predominant case. This results in the increase in flow of the fault current in the line. Also the equipments installed in such a line get damaged internally due to flow of excess fault current. Therefore in order to improve the transient conditions and limit the fault current to a manageable level, a device called Fault Current Limiters (FCLs) are being used in recent trend. This paper reviews about various fault current limiters, their development, characteristics and operating performance in the system. It gives a detailed knowledge about various operations performed by fault current limiters that is compared with other conventional techniques.</p>

scholarly journals Impact of the Generation System Parameters on the Frequency Response of the Power System: A UK Grid Case Study

Electricity ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 143-157
Author(s):  
Jovi Atkinson ◽  
Ibrahim M. Albayati
Keyword(s):  
Power System ◽  
Frequency Response ◽  
Power Grid ◽  
Sudden Increase ◽  
Generation System ◽  
System Parameters ◽  
Primary Frequency ◽  
Primary Frequency Response ◽  
The Impact ◽  
System Inertia

The operation and the development of power system networks introduce new types of stability problems. The effect of the power generation and consumption on the frequency of the power system can be described as a demand/generation imbalance resulting from a sudden increase/decrease in the demand and/or generation. This paper investigates the impact of a loss of generation on the transient behaviour of the power grid frequency. A simplified power system model is proposed to examine the impact of change of the main generation system parameters (system inertia, governor droop setting, load damping constant, and the high-pressure steam turbine power fraction), on the primary frequency response in responding to the disturbance of a 1.32 GW generation loss on the UK power grid. Various rates of primary frequency responses are simulated via adjusting system parameters of the synchronous generators to enable the controlled generators providing a fast-reliable primary frequency response within 10 s after a loss of generation. It is concluded that a generation system inertia and a governor droop setting are the most dominant parameters that effect the system frequency response after a loss of generation. Therefore, for different levels of generation loss, the recovery rate will be dependent on the changes of the governor droop setting values. The proposed model offers a fundamental basis for a further investigation to be carried on how a power system will react during a secondary frequency response.

scholarly journals SVM based pattern recognised islanding detection approach in a multiple distributed generation system

2018 ◽  
Vol 7 (1.8) ◽  
pp. 228 ◽  
Author(s):  
Gundala Srinivasa Rao ◽  
G. Kesava Rao
Keyword(s):  
Distributed Generation ◽  
High Accuracy ◽  
Islanding Detection ◽  
Generation System ◽  
Detection Zone ◽  
The Past ◽  
Detection Approach

The penetration of Distributed generation (DG) ensures the increase of demand for consistent, reasonable and spotless electricity facing with some design and operational challenges such as islanding. Several active and passive methods have been suggested in the past to detect islanding. Since they suffer from the large non detection zone and a high cost. In order to defeat such issues we propose a SVM based pattern recognising approach for islanding detection in a multiple DG system. The results show that our proposed method detects islanding with high accuracy.

Sign in / Sign up

Export Citation Format

Share Document