Evaluating power system network inertia using spectral clustering to define local area stability

2022 ◽  
Vol 134 ◽  
pp. 107404
Author(s):  
Warren J. Farmer ◽  
Arnold J. Rix
Keyword(s):  
Power System ◽  
Spectral Clustering ◽  
Local Area

The Development and Application of a Marine Power System Simulator for Marine Engineer Training

2005 ◽  
Vol 42 (02) ◽  
pp. 80-87
Author(s):  
Weifeng Shi ◽  
Tianhao Tang
Keyword(s):  
Power System ◽  
Local Area Network ◽  
Local Area ◽  
System Model ◽  
Lubricating Oil ◽  
Network Communication ◽  
Area Network ◽  
Power Network ◽  
Marine Engineer ◽  
Power System Model

For marine engineer training, marine power system analysis and fault diagnoses, a marine power system simulator (MPSS) is proposed here. It has been developed by applying system simulation techniques. The main techniques employed were marine power system modeling, microcomputer control, and local area network communication. Some functions and typical fault simulations produced with the MPSS are introduced. These operations are particularly useful for marine engineer training. A marine power system model is built by applying the power system dynamic stability theory. The power system model is the most important element in the simulator. The system model is made of a diesel engine generator, induction motor, power network, and so on. Many simulation results were obtained, such as starting the lubricating oil pump and a power network three-phase ground fault. Because the system offers online control, local area network communication, and human-machine interface of information, this MPSS is used extensively in marine engineer training where the standard is professional skill in marine electrical technology. The system has been used to meet the standards of the STCW78/95 international convention in many marine companies and training centers in China with good results.

Weight Set of State Estimation Based on Partition

2013 ◽  
Vol 347-350 ◽  
pp. 2077-2081
Author(s):  
Jia Yi Zang
Keyword(s):  
Power System ◽  
State Estimation ◽  
Great Influence ◽  
Local Area ◽  
The State ◽  
Estimation Result ◽  
System State ◽  
Power System State Estimation ◽  
Accuracy Of Measurement ◽  
Bad Data

In power system state estimation, bad data of local area can make state estimation difficult, and accuracy of measurement can also have great influence on the result of state estimation. Based on grid partition, this paper forms a lot of independent sub area, then measurement weights are adjusted using the state estimation result of sub area. This overcomes the defects of uniform weights distribution, and improves the accuracy of state estimation

Effective Communication-Based Reactive Power Sharing Scheme for Meshed Microgrid in an Islanded Mode

2021 ◽  
Author(s):  
Anitha Daniel ◽  
Suchitra Dayalan
Keyword(s):  
Power System ◽  
Reactive Power ◽  
Local Area ◽  
Power Sharing ◽  
Matlab Simulation ◽  
Distributed Generators ◽  
Control Scheme ◽  
Islanded Mode ◽  
Radial Network ◽  
Virtual Impedance

Microgrids (MGs) are the most sought out and feasible solution for the present energy crisis. MG is a group of Distributed Generators (DGs) interacting with each other to provide energy to a defined local area. The inclusion of DGs into the conventional power system at various voltage levels has altered the topology of the power system and their control techniques. Hence, the MGs can no longer be considered as a traditional radial network but rather a meshed network. The control and operation of such practical MGs become a challenge, especially when operated in the islanded mode. This research paper considers a realistic meshed MG operating in an islanded mode for study. In an islanded MG, the issues of real and reactive power sharing among DGs are addressed so that the power contribution of each DG is proportional to its rating, thus preventing overload and ensuring reliable operation. A communication-based virtual impedance estimation is proposed in addition to the droop controller for proportionate real and reactive power sharing among DGs in a meshed MG. With the increased complexity of meshed MG, the proposed communication-based control scheme offers an efficient reactive power sharing between DGs without the feeder and network impedance requirements. A MATLAB simulation study proves the effectiveness of the proposed control strategy for a meshed MG with equal DG ratings and unequal DG ratings under changing load conditions.

scholarly journals Design of Velocity PID-Fuzzy Power System Stabilizer Using Particle Swarm Optimization

2021 ◽  
Vol 20 ◽  
pp. 9-14
Author(s):  
T. Hussein Elmenfy
Keyword(s):  
Particle Swarm Optimization ◽  
Power System ◽  
Fuzzy Controller ◽  
Particle Swarm ◽  
Local Area ◽  
Optimization Techniques ◽  
Power System Stabilizer ◽  
Swarm Optimization ◽  
Additional Signal ◽  
System Stabilizer

Power system stabilizer (PSS) is used to damping power system local and interarea modes of oscillation. It will act as additional signal through the generator excitation system which produces a component of electrical torque in phase with speed variation. Fuzzy controller is nonlinear. It is more difficult to set the fuzzy controller gains compared to conventional PID controller. This research proposed velocity (PID-FPSS) its gains are tuned off-line by particle swarm optimization techniques (PSO). The objectives are to damp local-area mode of oscillations that occur following power system disturbances. The effectiveness of the proposed technique is illustrated by applying the velocity PID-FPSS to a single-machine infinite bus power system that is typically used in the literature to test the performance of power system stabilizers. The simulation studies has been tested in MATLAB SIMULINK package . A comparison between the proposed PID-FPSS and a well-tuned and designed robust power system stabilizer (RPSS) confirms the superiority of the PID-FPSS.

The development of automatic restorative operation applicable to power system local area dispatching

1990 ◽  
Vol 110 (3) ◽  
pp. 37-49 ◽  
Author(s):  
Takenori Kasuya ◽  
Hiroshi Oda ◽  
Hiroshi Inoue ◽  
Shigeru Iizuka
Keyword(s):  
Power System ◽  
Local Area

scholarly journals Development of automatic restorative operation applicable to power system local area dispatching.

1989 ◽  
Vol 109 (4) ◽  
pp. 177-184
Author(s):  
Takenori Kasuya ◽  
Hiroshi Oda ◽  
Hiroshi Inoue ◽  
Shigeru Iizuka
Keyword(s):  
Power System ◽  
Local Area
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