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The demand for electricity is increasing rapidly, a consequence of this is the threat to the stability of the electrical system, one of which is the stability of the voltage. Voltage instability causes the system voltage to collapse, which causes the system voltage to decrease. System voltage which decreases during maximum loading will cause blackouts. One way to overcome the voltage instability can be by using the power flow method (PF) and the Sustainable Power Flow Method (CPF). Performing PF and CPF methods will provide a clear picture of the existing power system network structure. In experiments conducted using the Java-Bali 500 kV electrical system showed that total active power generation was valued at 12,144 p.u. and total reactive power generation valued at 5,268 p.u. While the total active power load is worth 12,058 p.u. and the total reactive power load is 4.65 p.u. And get the four most critical buses or the most vulnerable to voltage instability on the Tasik Malaya, Mandarincan, Ungaran, and Pedan buses. On the Pedan bus, the most critical bus ride compared to other buses can be related to the length between buses to and to the Pedan bus which is very long which can increase profit and loss on the transmission line. These losses can replace the power supply at the load past the set critical point. And can also produce reactive power generated on the pedan bus is very small while the required amount is very large. [ABSTRACT FROM AUTHOR]

Saving electricity in an induction motor can be done by compensating for reactive power so that the power factor can be increased. The purpose of this study was to determine the characteristics of the MERS as a reactive power compensator in an induction motor. The method used is designing a reactive power compensator using a magnetic energy recovery switch. Before designing a reactive power compensator, simulation is used as a reference in the design of the reactive power compensator. The result of the application of MERS as a reactive power compensator is to increase the power factor to 0.75 from the previous 0.70. [ABSTRACT FROM AUTHOR]

Demand for electricity is increasing rapidly, the consequence of this is a threat to the stability of the electrical system, one of which is the voltage stability. FACTS or flexible alternating current transmission system is an electronic equipment capable of regulating electrical power transmission that can be used to overcome stability problems. This research will analyze the use of SVC and STATCOM as an equipment model from FACTS to overcome the stability of the electric power system on the most critical buses. Simulations were carried out using PSAT using case studies: a 500 kV Java-Bali network. Then the stability of the voltage is observed using the help of the PV curve which can show the value of the voltage conditions in each operating condition. SVC installation in the Java-Bali 500 kV case does not reduce the active power losses or reactive power, but also the addition of length λ is 0.233 p.u. (6.01%) and compared to the addition of length λ at STATCOM of 0.149 p.u. (3.85%). [ABSTRACT FROM AUTHOR]