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Deregulation is, restructuring the rules and economic incentives that the government setup to control and drive the Electric Supply Industry (ESI). It is also called as open power market, competitive power market, vertically unbundled market etc. With the introduction of deregulation, the electric power industry needs changes in various power system operation, control and planning activities. In this...
In this paper an off-grid hybrid energy system consisting of a reverse osmosis desalination plant for brackish water powered by renewable energy sources, and a diesel generator as back-up will be described. The whole system serves as a prototype for testing new automatic control methods to increase the plant reliability, which is crucial in remote arid areas. The necessary steps for the design of...
This document presents a robust control H∞ based in Linear Matrix Inequalities applied to a power multimachine interconnected system, which is expressed such as Differential and Algebraic linear model. The strategy permits to damp oscillations generated by changes in operation point of each subsystem and input perturbations in mechanic power. The strategy only uses minimal available information in...
In this paper, we present a simple, distributed algorithm that adjusts the power-frequency set-points of generators to correct for generation and load fluctuations, and asymptotically achieves the lowest-cost power allocation among generators while driving the power imbalance exponentially to zero. In this algorithm each generator executes its own control law using only the power imbalance in the...
In the condition of suddenly increasing load such as summer peak load, contingencies and so on, it is important to ensure voltage stability margin (VSM) for preventing voltage instability as well as voltage collapse. To support active power on the system, some facilities for weak buses, such as ULTC, SC, FACTS (flexible AC transmission system), are controlled and the dispatch of committing generator...
In order to get the maximum power from the wind, the variable-speed turbine should run at different speed when wind speed changes.The dynamic characteristics of the control system must be properly defined and designed to achieve satisfactory generated power quality and system security, availability and reliability. Therefore great attention has to be kept in the theoretical design task, as well as...
With the increasing levels of wind generator penetration in modern power systems, one of major challenges in the present and coming years is the optimization control, such as optimal power flow including wind farms. The power flow model for a fixed speed wind generator (FSWG) system and a variable speed wind generator (VSWG) system is discussed respectively. The expectation model of wind generators'...
With the organizational reform of electric power industry in our country day by day, and the market of generation side gradually maturing, the construction of ancillary services market was brought into schedule. As one of the most important ancillary services, AGC possesses certain competitiveness so far as its own characteristics and supply trend of the electrical network, and marketization is relatively...
Due to much larger numbers of small generators it will be more complex to control the balance between supply and demand in future power systems. To deal with this complexity, autonomous power networks could be effective. Autonomous power networks are aggregations of producers and consumers on both physical and economical level and have the capability to control complex systems with simple rules. To...
Computer simulation is an increasingly popular tool for determining the most suitable hybrid energy system type, design and control for an isolated community or a cluster of villages. This paper presents the development of the optimum control algorithm based on combined dispatch strategies, to achieve the optimal cost of battery incorporated hybrid energy system for electricity generation, during...
Automatic generation control (AGC) has been one of the important issues in the operation of local area and interconnected power systems. AGC provides power demand signals for AGC power generators to control frequency. In AGC, some variables of power system such as frequency and power generation are measured to calculate the area control error (ACE). The ACE value is an important factor of AGC performance...
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