1 research outputs found
ANALISIS STATIS DAN DINAMIS PENEMPATAN OPTIMAL DIVAIS FACTS UNTUK KEAMANAN OPERASI SISTEM
Flexible AC Transmission System (FACTS) in a power system plays a vital role
in improving the performance of power systems, both static and dynamic, i.e.
improve stability, increase security, improve the reliability of loading and reduce
losses. FACTS must be optimally placed to implement such the vital role, because
the development investment costs of FACTS are high.
FACTS devices considered for placement are: Static Var Compensator (SVC),
Thyristor Controlled Series Compensation (TCSC), Unified Power Flow Controller
(UPFC) and the Generalized Unified Power Flow Controller (GUPFC). It is
proposed in this study two techniques of determining the location of FACTS, the
technique of the sensitivity of system loading factor and N-1 contingency criteria.
The first technique, corresponds to the real and reactive power balance equation with
respect to changes in the magnitude and phase angle of the voltage at each branch in
the network. The second technique is the determination of the level of contingency
for each branch in the network. Furthermore, the optimal location is determined in
accordance with the highest absolute values obtained from these techniques. Four
types of FACTS ie SVC, TCSC, UPFC and GUPFC each tested with static and
dynamic performance analysis at that location. Static performance testing is done
with power flow and optimal power flow (OPF) algorithm. Nonlinear Predictor-
Corrector Primal-Dual Interior-Point Algorithm (NLPCPDIPA) is used with the
objective function to optimize cost of supply, demand and loading parameters, the
condition without or with FACTS to obtain an optimal power flow and parameters
FACTS. Then, the static performance testing carried out by time-domain simulation.
Testing is done by using simulation and using power systems IEEE 57-bus to obtain
the performance of both static and dynamic systems. The type, location and
parameters of FACTS device control can be determined from the best results of the
above procedure which are based on the most outstanding dynamic stability values
of the voltage profile, the lowest losses and the highest loading margin.
The application of FACTS controllers is done to determine the optimal location
of FACTS devices by selecting the type, determining the control parameters and
computing investment cost which provide the desired results. This is indicated by a
decrease in losses and an increase in the loading margin which can eventually
improve the security of the operating system or avoid contingency conditions.
The type and location of FACTS devices selected in the IEEE 57-bus system is
GUPFC on line-9 (buses 9-10) and line-10 (buses 9-11) with parameters (in pu): ���
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