6. Complete set of basic differential defense of wl-110 kV (transmission of signal on fibre-optic communication line) with the functions of reserve defense

The complete set of defense can consist of one or a few microprocessor devices and must realize next functions:

• differential defense with the transmission of signals on FCL (fibre-optic communication line);

• controlled from distance protecting from all kinds between phase contactors and contactors to earth;

• four step current protecting from contactors with the organ of direction of power a zero sequence;

• logic of the three-phase disconnecting;

• logic of teleacceleration of reserve defense;

• exposure of disrepair of current chains;

• blocking at the disrepair of chains of tension;

• protecting from the incompletely phase mode;

• autoreclosing;

• amount of groups of setpoints – not less than 4th;;

• distance-finding to the site of damage;

• real-time clocks with synchronization from an outsourcing;

• free-programmable logic;

• internal recorder of events;

• oscillographic testing;

• energyindependent memory;

• measurings: currents, tensions, frequency, power;

• self-diagnostic of device;

• liquid-crystal screen on a front panel;

• user-programmable light-emitting-diode indicators for signaling;

• signaling about the state and functioning of device;

• support of protocol of MEK 61850, and presence of standard international protocols of exchange by information for integration in ACS;

• front port of Ethernet (Rs232) for connection with a device;

• back port with an optical fibre ethernet-interface for connection with ACS substations;

7. Complete set of defense wl-110 kV (on the controlled from distance and current principle) with funk-ciey dbrs,ari

The complete set of defense can consist of one or a few microprocessor devices and must realize next functions:

• step controlled from distance protecting from all kinds between the phase shorting;

• four the step current directed protecting of a zero sequence from contactors;

• step controlled from distance protecting from all types of contactors;

• maximal current defense (MCD);

• fast-acting MCD (current pinch-off);

• defense at including on a damage;

• logic of the three-phase disconnecting;

• logic of teleacceleration of reserve defense;

• control of good condition of current chains;

• control of disrepair of chains of tension;

• freely programmable logic;

• presence of three-phase DBRS;

• presence of three-phase ARI;

• internal recorder of events;

• oscillographic testing;

• energyindependent memory;

• measurings: currents, tensions, frequency, power;

• self-diagnostic of device;

• liquid-crystal screen on a front panel;

• user-programmable light-emitting-diode indicators for signaling;

• signaling about the state and functioning of device;

• location damage on a line;

• groups of setpoints: no less 4th;

• synchronization from the outsourcing of exact time;

• support of protocol of MEK 61850, and presence of standard international protocols of exchange by information for integration in ACS;

• front port of Ethernet (Rs232) for connection with a device;

• back port with an optical fibre ethernet-interface for connection with ACS substations;