scholarly journals Wide area inter-area oscillation control system in a GB electric power system

2019 ◽  
Vol 2019 (16) ◽  
pp. 3294-3300
Author(s):  
Deyu Cai ◽  
Lei Ding ◽  
Xin Zhang ◽  
Vladimir Terzija
Keyword(s):  
Control System ◽  
Power System ◽  
Electric Power ◽  
Electric Power System ◽  
Wide Area ◽  
Oscillation Control

Supporting Windpower Within a Separate Electric Power Grid

2011 ◽  
Author(s):  
Zygfryd Domachowski ◽  
Marek Dzida ◽  
M. Hossein Ghaemi
Keyword(s):  
Control System ◽  
Power System ◽  
Electric Power ◽  
Gas Turbine ◽  
Electric Power System ◽  
Combined Cycle ◽  
Turbine Plant ◽  
Wind Turbulence ◽  
Gas Turbine Plant ◽  
Plant Control

Utilization of windpower is considerably increasing in many countries around of the world. However, it produces an unreliable output due to the vagaries of the wind profile. To solve the problem, wind energy should be supported by local conventional sources. The requirements concerning the reliability and quality of electric energy supply can be most satisfactorily fulfilled when a windfarm is connected to a large electric power system. Then any electric power fluctuations, resulting either from wind turbulence or power demand variation, provoke system frequency variations. They should be damped by applying an appropriate control system of such a large power system. In this paper, the problem of control of a separate electric power system composed of windpower farm and supported by a gas turbine plant or a combined cycle has been investigated. First, the impact of wind turbulence on gas turbine plant control system has been modeled and simulated. This is carried out for different amplitudes and frequencies of wind speed. Next, the structure of gas turbine plant control system and its parameters have been adapted to limit the power and frequency fluctuations resulting from wind turbulence. Then the design is further developed by considering a combined cycle instead of a single gas turbine.

scholarly journals Hierarchical MPC Secondary Control for Electric Power System

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
Freddy Milla ◽  
Manuel A. Duarte-Mermoud ◽  
Noreys Aguila-Camacho
Keyword(s):  
Control System ◽  
Power Systems ◽  
Power System ◽  
Electric Power ◽  
Frequency Control ◽  
Regulatory System ◽  
Industrial Sector ◽  
Electric Power System ◽  
Regulatory Control ◽  
Secondary Control

Although in electric power systems (EPS) the regulatory level guarantees a bounded error between the reference and the corresponding system variables, to keep its availability in time, optimizing the system operation is required for operational reasons such as, economic and/or environmental. In order to do this, there are the following alternative solutions: first, replacing the regulatory system with an optimized control system or simply adding an optimized supervisory level, without modifying the regulatory level. However, due to the high cost associated with the modification of regulatory controllers, the industrial sector accepts more easily the second alternative. In addition, a hierarchical supervisory control system improves the regulatory level through a new optimal signal support, without any direct intervention in the already installed regulatory control system. This work presents a secondary frequency control scheme in an electric power system, through a hierarchical model predictive control (MPC). The regulatory level, corresponding to traditional primary and secondary control, will be maintained. An optimal additive signal is included, which is generated from a MPC algorithm, in order to optimize the behavior of the traditional secondary control system.

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