The Indonesian government has allocated the 3.3-3.4 GHz band, which is adjacent to the extended Cband 3.4-3.7 GHz, for Broadband Wireless Access (BWA) services. The country has been using the extended C-band for Fixed Satellite Service (FSS). This research shows the interference potential between the two systems if an adjacent band is allocated for them. Using a clutter loss of 10 dB and site s...

In the article an experimental power system consisting of Russian equipment, as well 220 kV line distance protection, are simulated in RTDS Simulator. The settings were calculated and polygonal characteristics protection constructed. A sequential installation wind turbines into various nodes was carried out correct operation verified. As a result study, impact on when they connected between sit...

This paper presents the development of adaptive distance relay for protection of parallel transmission line with mutual coupling. The proposed adaptive relay, automatically adjusts its operation based on the acquisition of the data from distance relay of adjacent line and status of adjacent line from line circuit breaker IED (Intelligent Electronic Device). The zero sequence current of the adja...

This paper investigates the impact on operating time delay and relay maloperation when 1,2 and 3 order analog antialiasing filters are used in numerical distance protection. RC filter with cut-off frequency 90 Hz is used. Simulations are carried out for different SIR (Source to line Impedance Ratio), load, fault type and fault conditions using SIMULINK, where the voltage and current signals are...

When a distance relay protects transmission line located on dual circuit tower, coupling effect will occur between the two circuits. Transposition of circuits can reduce mutual impedances, but this does not cater to zero-sequence impedance during earth faults. As result, measured by under phase-to-earth fault conditions in these circumstances represent correct point unless effects are taken int...