نتایج جستجو برای: hvdc supplementary controller

تعداد نتایج: 94063  

Journal: :مهندسی برق و الکترونیک ایران 0
reza gholizadeh roshanagh sajad najafi ravadanegh

the ultimate goal of power system operation and planning is to increase power system reliability which enforces interconnected operation of power system. as a result of power system interconnection, the inter-area oscillation under different disturbances may cause power system partial or total blackout. dc-segmentation of interconnected power systems is a solution in which the topology of the n...

Gholizadeh Roshanagh, Reza , Najafi Ravadanegh, Sajad ,

The ultimate goal of power system operation and planning is to increase power system reliability which enforces interconnected operation of power system. As a result of power system interconnection, the inter-area oscillation under different disturbances may cause power system partial or total blackout. DC-segmentation of interconnected power systems is a solution in which the topology of the n...

2015
Shiyun Xu Huadong Sun Baiqing Li Guangquan Bu Jun Yi Jian Zhang Bing Zhao Zhanming Chen Xinggang Yan

The present study proposes a hierarchical wide-area decentralized coordinated control framework for HVDC power system that is robust to multiple operating conditions. The upper level wide-area coordinated controller is designed in the form of dynamic output feedback control that coordinates the lower level HVDC supplementary controller, PSS, and SVC. In order to enhance the robustness of the de...

2011
N. Nayak S. K Rout ray P. K. Rout

s : This paper proposes the improvement of power flow during transient condition of HVDC light using PI Controller. The Optimal design of PI controller for a HVDC light is a challenging task and time consuming using the conventional techniques. This work presents analysis of transient stability of HVDC link using PI controller, and the stability has been improved by optimized gains of PI contro...

2005
H. R. Najafi F. V. P. Robinson Jahed Motlagh

The design and stability assessment of a new robust nonlinear fuzzy controller that may be applied in the control loops of HVDC systems is presented. A new simplified nonlinear dynamic model is developed for HVDC systems that can be used to design the controller. The proposed model decomposes into several linear systems around important equilibrium points. These local linear models describe the...

2015
Omid Borazjani Alireza Rajabi Mojtaba Saeedimoghadam

High Voltage Direct Current (HVDC) power transmission is employed to move large amounts of electric power. There are several possibilities to enhance the transient stability in a power system. One adequate option is by using the high controllability of the HVDC if HVDC is available in the system. This paper presents a control technique for HVDC to enhance the transient stability. The strategy c...

2015
Sayara Y. Tamboli H. T. Jadhav

This paper presents the HVDC system for power system to control the power flow between two converter stations. In this paper, rectifier side is used to control current and inverter side is used to control current as well as extinction angle. In power control system, proportional-integral (PI) controller is widely used. Here we compare its performance with conventional controller and artificial ...

2010
S. Ramesh A. Krishnan

In this paper, a fuzzy logic controller is proposed for an application of HVDC link to stabilize the frequency oscillation in a parallel AC – DC interconnected power systems. When an interconnected AC power system is subjected to a load disturbance, system frequency may be considerably disturbed and becomes oscillatory. By utilizing the system interconnections as the control channels of HVDC li...

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