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This paper presents a comprehensive approach to evaluate tie line operation control and stiffness for Sudan and Ethiopia networks. Tie line operation control evaluate by the frequency and area control error deviation from Sudan Stander, The work has been supported by on line measurement made for frequency deviation and area control error in the tie line.
In this paper, the impact of integration of FACTS devices viz. TCPS and TCSC on Automatic Generation Control (AGC) of a two area thermal-thermal deregulated power system have been studied in order to enhance the performance of responses such as frequency deviation and oscillation damping, deviation of tie line power between the areas and power generated by GENCOs. The comparison of results between...
PID-derivative filter has been considered better than the normal PID control when it comes for the stability analysis of a power system. This paper presents a PID-derivative filter load frequency controller for the two thermal-thermal and hydro-thermal interconnected areas. The proposed controller has been based on cascading of derivative filter with PID controller. The Internal model control (IMC)...
High voltage direct current (HVDC) systems have been used as an effective solution to transmit power over long distances. Performance of HVDC systems has significantly improved with the emergence of voltage source converter based HVDC (VSC-HVDC). Increased controllability provides independent control of active and reactive power which facilitates controlling of voltage and frequency. This paper investigates...
The load on the power system is always varying with respect to time which results in the variation of frequency, thus leading to load frequency control problem (LFC). The variation in the frequency is highly undesirable and maximum acceptable variation in the frequency is ± 0.5Hz. In this paper load frequency control is done by PI controller, which is a conventional controller. This type of controller...
The power transfer restrictions on the transmission lines 150 kV in Sumatera Interconnection System caused electric power generated by the power plant with lower cost in fuel at Southern Sumatera cannot be optimally delivered to the load centers in Northern Sumatra. One of technical solution that is expected to solve this problem is fixed series capacitor installation in tie line Lubuk Linggau — Bangko...
An attempt is made to examine the effective application of artificial bee colony algorithm to optimize the parameters in load frequency control (LFC) of a two area interconnected thermal system. The proportional gains (Kp) and integral gains (Ki) have been optimized to ensure best performance of the system, minimizing the tie-line deviation and frequency deviations of both the areas. The settling...
In recent years, power systems have steadily grown larger and more complicated. Meanwhile, there has been a push toward a strong deregulation of the power industry, which has also progressed, causing increases in newcomers called PPS (Power Producers and Suppliers) generation ratio and power wheeling via the tie-lines connecting different power companies. These factors all contribute to the increase...
Purchasing and importing electricity from neighbor countries (or systems), has several benefits such as reduced network losses, reduced energy not served (ENS) criteria, possibility to export power to other systems, and probably the most important one is its contribution to supplying the load without increasing generation capacity. To improve reliability of the network by interconnecting systems,...
Presently, the construction of new transmission lines is very difficult by opposition from the inhabitant, and the investment for new equipment tends to be suppressed by the progress of power market deregulation. In addition, transient stability has become a problem under the deregulated environment. On the other hand, the use of a NAS battery system is effective in power system problems, because...
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