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    Visual alert system - Operation of UPS-type
    Nuclear Power Plants

Electrical calculation for nuclear power plants

Description

Nuclear power plants produce steam from the heat produced at the time of the nuclear fission, a process during which the atoms divide and release energy. Steam is used to drive large turbines and produce electricity. In the center of the reactor stands the nucleus, which contains uranium fuel. In other words, a nuclear power plant is a thermal power plant in which the heat source is a nuclear fuel.

The design of the electrical power system for a specific plant will depend on the network, the design of the systems of the plants and the decisions about the engineering design. Despite the multiple design possibilities, any nuclear power plant is based on three electrical systems: the main system, the internal electrical system and the external electrical system.

The external electrical system consists of the substation to which the power plant evacuates the generated electricity and the distribution or transport network.

The main system consists of the generators and step-up transformers associated to each of them, as well as the connection systems (phase bars) and protections (generator switch, protection relays, measurement transformers …).

The internal electrical system consists of all those auxiliary subsystems necessary for the correct operation of the main system – to which it is connected through an auxiliary transformer – such as lubrication and cooling pumps, as well as all its protection and control equipment, UPS and DC systems, emergency power systems such as diesel generators … and of course all the corresponding protection and control equipment that guarantees the correct functioning of each subsystem. The internal system can be very complex, and its correct design is essential to ensure the proper functioning of the main system and the safety of the entire plant.

Trace Software International Solutions

Given the complexity of a nuclear plant, safety is of paramount importance. elec calc™  features all the necessary functions to carry out a complete analysis of critical facilities with detailed studies. It further allows the user to check several operational scenarios such as emergency, network change-over, to analyze each operational condition using the behavior and sizing of the installation. elec calc™ Suite incorporates a full suite of applications that are essential to the optimal sizing of the installation along with the correct maintenance during the installation’s life cycle.

Benefits

  • Automatic calculations multi-norm in real time.

  • Possibility of connecting multi-sources of different powers.

  • Calculations of short-circuit currents (according to IEC 60909).

  • Different earthing systems (TT, TNS, TNC, IT).

  • Creation of different operating modes within the same project.

  • Study of the discrimination between protections.

  • Multi-manufacturer catalogs and user catalogs.

  • Management of different types of engine start.

  • Operation of UPS-type components and drive type.

  • Visual alert system.

Highlighted Video

Testimonial

“In the hospital sector where quality and continuity of service of an installation are paramount, we simulate all the scenarios with elec calc ™. It is both ergonomic, intuitive and well integrated with the manufacturers’ catalogs.”

Loïc BardouElectrical department manager, CHU Rennes, France



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Industries

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