Protection of the line reserve she2607 011

Appointment

Are intended as reserve or only protection of the line of 110-220 kV and automatic equipment of control of the linear switch.

 -

Application

The case ShE2607 011 is applied to switches with the three-phase drive.

Case ShE2607 012 – for switches with the incremental drive.

Cases ShE2607 011011, ShE2607 012012 are used as protection and automatic equipment of control of switches of two lines.

 -

Structure

The case ShE2607 011 (ShE2607 012) contains one set realizing the DZ, TNZNP, TO functions -
AUV, APV, UROV, ARPT, MTZ. The case ShE2607 012 in addition contains ZNFR and ZNF.

Cases ShE2607 011011, ShE2607 012012 contain two identical sets.

 -

Features

In each set food by an operational direct current of the terminal, chains of electromagnets of inclusion and the first group of electromagnets of shutdown, and also chains of the second group of electromagnets of shutdown of the switch is executed from separate automatic switches. Thanks to it the possibility of shutdown of the switch even is provided at the faulty terminal.

 -

In DZ for choice there are two algorithms of blocking -
when swings:

• on the speed of change of currents of the return and direct sequence -

• on the speed of change of vectors of resistance.

 -

Principle of action

DZ is executed five-step with blocking during the swings and malfunctions in tension chains, and the first step provides protection against all types of KZ, vtorayapyaty – from interphase KZ.

The possibility of a turn of the fourth and fifth steps of DZ and the fifth and sixth steps of TNZNP in the opposite direction is provided.

TNZNP contains six directed steps for protection against KZ on the earth.

Possibilities of acceleration of protection are provided: from the parallel line, at approbation of the line, quick and on VCh to the channel.

ON current reacts to linear and phase sizes of currents.

The AUV function provides reception of teams of inclusion and shutdown, control and fixing of situation, -
blocking from repeated inclusions.

Start-up of APV (single or double) is carried out with control of tension on tires and the line (control of absence, existence or synchronism of tension). The mode of turning on of the switch both with control, and with synchronism catching is provided.

The UROV function realizes the principle of the individual device, and performance of universal UROV both according to the scheme with the duplicated start-up, and according to the scheme with automatic check of serviceability of the switch is possible.

 -

Additional opportunities

In cases ShE2607 011011, ShE2607 012012 the possibility of independent service of sets is provided.

 -