Uninterrupted power supply system

Industrial uninterruptible power supply and uninterruptible power supply units (UPS and UPSU)

Industrial uninterruptible power supply and uninterruptible power supply units (UPS and UPSU) are designed for power supply of three-phase and single phase essential service requiring high-quality power voltage and placing high requirements to the electric power supply stability.

Main partner of BPA in industrial-grade UPS is the world-wide leader in the field of uninterruptible power supply systems – GUTOR company, a member of Schneider-Electric Group. GUTOR is engaged, first of all, in design and development of its own technologies for high-efficiency power protection. The industrial-grade interruptible power supply units produced by GUTOR meet the requirements of such industries as oil and gas, petrochemical and chemical industries and production and transmission of electrical energy.

UPS of GUTOR grade are designed for output power of 5 to 220 kVA, supported by all commonly used input and output voltages and frequencies. At the Customer’s request, manufacturing of any customized UPS of higher capacity is possible. To improve reliability and efficiency, UPS modules are connected in parallel (2 to 9 units). A wide range of additional options expands the functionality of industrial grade UPS according to the variety of the Customer’s demands.

The GUTOR technology satisfies basic requirements of essential service of uninterruptible electric power supply:

- performance flexibility, maximum safety and reliability of systems;

- double conversion;

- parallel redundancy;

- active load division;

- modular design;

- accumulators of closed and hermetically sealed types completed with genuine parts of HAWKER GmbH (Germany).

    

The result of BPA’s work is tern-key supply of up-to-date complex systems of uninterruptible power supply, own monitoring and control systems that are linked with general APCS system of the enterprise.

Examples of implemented projects:

Implementation of the redundant uninterruptible power supply unit (UPSU), 20kVA, with network bypass at Belozerny GTP OJSC

BPA has completed a complex project for implementation of redundant AC power supply unit of PDW-R series (GUTOR):

- development of detail design for UPSU;

- completing with components and supply of equipment;

- construction and installation works, commissioning and start-up works;

- development of handover-and-acceptance documentation.

UPSU is designed for power supply of three-phase and single phase electrical energy essential service requiring high quality feed voltage and placing special requirements to power supply stability. UPSU provides power supply of APCS systems, control instrumentation and actuating mechanisms of two main process plants of the Belozerny GTP.

High quality of output voltage of the system is ensured by double conversion technology. High reliability is achieved due to redundancy (backup) of uninterruptible power supply modules (UPS), and due to employment of an auxiliary (bypass) in-feed.

The system is composed of two identical AC UPS modules and a bypass cabinet. The functional structure of the system includes two accumulator batteries (one for each UPS module), which are supplied separately.

UPSs of PDW series are designed for power supply of three-phase and single phase electrical energy essential service requiring high quality feed voltage. Each UPS module is full-range AC power supply unit with double electrical energy conversion (~/=/~).

UPS module consists of a controlled thyristor rectifier converting three-phase input ac voltage in the mains into dc voltage of buffer circuit, and an inverter transistor converting dc voltage of buffer circuit into output three-phase ac voltage.

If input circuit voltage is available, the rectifier feeds the inverter and simultaneously provides charge to the accumulator battery in optimum regime (for extended life of the battery).

The inverter converts dc voltage of the buffer circuit into output ac voltage. The conversion is provided by commutation of power transistors with employment of pulse-length digitally controlled (regulated) modulation. If circuit voltage is available, the power source for inverter is the rectifier, if no voltage in the circuit – the accumulator battery.

In addition to the main components of the inverter and rectifier, UPS module includes protective switching units, fast power static switches, as well as a microprocessor-based controller that controls all UPS module equipment.

Bypass cabinet provides a possibility of power supply to the electric energy consumers from auxiliary (bypass) power supply and is composed of the following equipment: three-phase insulating transformer, manual 3-way switch of bypass, protective switching devices.

Implementation of the uninterruptible power supply system for the needs of Nizhnevartovski GTP LLC

Within the framework of retrofitting of the system of uninterruptible power supply (UPSU) in 10kV rectifier charger unit and GPP-4 of Nizhnevartovski GTP LLC, BPA has implemented a range of works on implementation of an advanced ac UPSU made by GUTOR:

- facility survey, development of technical solutions;

- development of detail design for UPSU;

- expert examination of the facility with respect to its industrial safety;

- packaging and supply of equipment;

- construction and installation works, commissioning and start-up works;

- development of handover-and-acceptance documentation.

UPSU is designed for power supply of three-phase and single phase electrical energy essential service requiring high quality feed voltage and placing special requirements to power supply stability. The used UPS of industrial grade, PDW series, is a full-range AC power supply unit with double electrical energy conversion (~/=/~) and it is designed for power supply of three-phase and single phase electrical energy essential service requiring high quality feed voltage.

Systems of uninterruptible power supply for the needs of platforms used in the Filanovski oil field by Lukoil Nizhnevolzhsneft LLC

Under the projects implemented by Lukoil Nizhnevolzhsneft LLC, BPA has performed completing with components, supply, commissioning, start-up, handover and acceptance works for four industrial-grade systems of uninterruptible power supply of PDW series (manufactured by GUTOR, Switzerland).

Supply of interruptible ac power supply systems (UPSU) and operating power control cabinets for electrical sub-station DNKS-2 of Sakhalin II project.

Under the projects implemented by Iskra-Energetika CJSC (city of Perm), BPA has performed completing with components and supply of industrial-grade uninterruptible power supply units of PEW series, made by Gutor (6 systems), Switzerland.

Implementation of interruptible power supply systems for the needs of NP “Nefteckhimiya” LLC

Under the project for reconstruction of СЕ-01 Central substation at NP “Neftekhimiya” LLC, BPA has performed a range of works on implementation of advanced systems of uninterruptible power supply on the basis of the equipment made by GUTOR, Switzerland:

- facility survey, development of a technical solution;

- development of detail design for UPS;

- completing with components and supply of equipment;

- construction and installation works, commissioning and start-up works.

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