Installation of capacitor batteries on SCRU-2

General part

This work design is based on contract No. 0851 dated 23.05.2008. Between the Customer

The project provides installation of devices of compensation of reactive power on ShchSU1 of SOFAS..... Customer .

The source data for the project is:

terms of reference (see Appendix 1);

single line diagram of 1 ShchSU1, 1 ShchSU2;

actual measurements of rooms.

Brief characteristics of the object

ShchSU1 is located in the building of PSU-1 of SOFAS of SKRU2 on a mark +7.800m. and has two tire sections. The single line diagram of ShchSU1 is given in fig. UKU.08.016EP of l.2.

From the substation, power is distributed via cable lines. The outgoing cable lines are protected by circuit breakers.

The main load is electric drives of flotation machines, pumps, stirrers, vacuum filters.

Installation of compensating devices will allow:

increase power factor on MCC tires;

reduce power losses in supply cables and transformers.

Key Technical Solutions

The design provides for the installation of two KU: S1 (UKM 580,430050 UZ 300 kVar) - in sections No. 1 and S2 (UKM 580,430050 UZ 300 kVar) - in section No. 2. KU is an all-metal cabinet with installed equipment. The plant is controlled by a digital microprocessor reactive power controller. Plants can operate in automatic or manual control mode, reactive power control is carried out by changing the number of connected stages of CP .

Connection of KU S1 is carried out by cable 2hVVG1 3x7035, protection of KU is carried out by the automatic VA513934001020UHLZ switch installed on panels No. 9 ShchSU1 (see fig. UKU.08.016EP of l.4).

Connection of KU S2 is carried out by cable 2hVVG1 3x7035, protection of KU is carried out by the automatic VA513934001020UHLZ switch installed on panels No. 12 ShchSU1 (see fig. UKU.08.016EP of l.5).

To enable C1, C2 installation, two non-usable cells 25, 26 are to be removed in the MCC (see drawing UKU.08.016EP l.3), the resulting opening is closed with steel sheet.

Cables are laid in the existing cable channel of the room (see drawing UKU.08.016EP l.3).

To ensure the possibility of automatic maintenance of the power factor, current transformers for phases "A" of each input are installed on the input TP buses (see drawing UKU.08.016EP l.2).

Installation and Adjustment

Install and lay cables as per drawing UKU.08.016EP l.3, install circuit breakers as per drawings UKU.08.016EP l.4, UKU.08.016EP l.5. Current transformers are installed directly on the buses near the distribution bus section after the disconnectors.

Values of power factor, transformation factor of current transformers are entered into the controller during parameterization. KP operation, maintenance and other works are performed in accordance with the operating instructions on KP.

Fire Safety Measures

Fire safety is ensured by the design of compensating devices and measures taken in the electrical room.

Installed KUs comply with specification 16673.083-86. The plants are designed for operation in regions with moderate climate (type of climatic design UZ as per GOST 1515069, nominal values ​ ​ of mechanical external influencing factors for the mechanical design group M2 as per GOST 1551672, contact connections of the plants correspond to GOST 1043482. KU are environmentally safe, made of non-combustible materials, with built-in fuses, degree of protection IP 21 as per GOST 1425480.

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