نتایج جستجو برای: hvdc supplementary controller

تعداد نتایج: 94063  

2012
B. Vijayalakshmi Ram Kumar

HVDC transmission is more effective and economically cheaper where bulk power is to be transmitted over long distance. Hence the surplus power from a remote place can be exported to the needy place at cheaper rate. The HVDC system require only one transmission wire and the ground return or seawater can be used as an another line. The Lakshadweep Island is located at faraway place from the north...

In this paper, the modified linearized Phillips-Heffron model is utilized to theoretically analyze asingle-machine infinite-bus (SMIB) installed with SSSC. Then, the results of this analysis are used forassessing the potential of an SSSC supplementary controller to improve the dynamic stability of apower system. This is carried out by measuring the electromechanical controllability through sing...

2016
Shweta Mahajan S. U. Kulkarni

This paper highlights on the techniques used in the HVDC transmission line protection for the faults occurring at various locations. The different techniques deployed for HVDC protection includes Distance Protection technique, Discrete Fourier Transform technique, Artificial Neural Network technique, Fuzzy logic technique, Wavelet Transform technique, Natural Frequency technique, Independent co...

Journal: :International Transactions on Electrical Energy Systems 2022

After losing one or two poles of the high-voltage DC (HVDC) line, power systems may experience angular oscillations among synchronous generators (SGs), possibly followed by tripping SGs and blackouts loads. To suppress oscillations, difficulty lies in optimization methods countermeasures. For former, parameter based on eigen-analysis for a given scenario is not suitable oscillation after large ...

2010
Xiaorui Wang Ming Chen Charles Lefurgy Tom W. Keller

The supplementary file of the paper is organized as follows. Section II introduces the power distribution hierarchy used in many data centers. Section III describes the controller design and analysis of the PDU-level power controller. Section IV discusses the rack-level power controller. Section VI provides additional implementation details of our control architecture and additional empirical r...

2012
A. K. Baliarsingh D. P. Dash N. R. Samal S. Panda

Design of an optimal controller requires optimization performance measures that are often noncommensurable and competing with each other. Design of such a controller is indeed a particle swarm optimization (PSO) problem. This paper investigates the comparison of application of PSO based optimization technique and Differential Evolution (DE) for the design of a Thyristor Controlled Series Compen...

2013
P. Le-Huy S. Casoria O. Saad

This paper presents a unified approach for efficient modeling and simulation in a multi-tool environment. The motivations are clearly defined and the approach is explained. While this method is applicable to a wide range of tools and applications, it is illustrated with Matlab/Simulink, for control system development, and two EMT simulation tools, EMTP-RV and Hypersim. The sample application is...

2017
Benfeng Gao Ruixue Zhang Ren Li Hongyang Yu Guoliang Zhao

High-voltage direct current (HVDC) lines with line-commutated converter (LCC) are being increasingly employed to transmit bulk wind power over long distance. However, this may cause the sub-synchronous torsional interaction (SSTI) between the wind farms and the LCC-HVDC system. The SSTI characteristics of wind farms with fixed-speed induction generator (FSIG) wind turbines connected to LCC-HVDC...

2010
A. K. Baliarsingh S. Panda A. K. Mohanty C. Ardil

This paper presents a systematic approach for designing Unified Power Flow Controller (UPFC) based supplementary damping controllers for damping low frequency oscillations in a single-machine infinite-bus power system. Detailed investigations have been carried out considering the four alternatives UPFC based damping controller namely modulating index of series inverter (mB), modulating index of...

Journal: :Energies 2021

The massive integration of variable renewable energy (VRE) in modern power systems is imposing several challenges; one them the increased need for balancing services. Coping with high variability future generation mix incredible shares VER, system requires developing and enabling sources flexibility. This paper proposes demonstrates a single layer control coordinating steady-state operation bat...

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