“This type of damage and the resulting production losses can entail immense costs extending into the millions,” explains Weidmüller Product Manager, Klaus Schürmann. “Users operating automation systems at a high level require power supply solutions that meet the requirements of their specific application and which comply with the applicable tiers of reliability.”
In automation, a highly available 24 V power supply avoids costly machinery downtimes caused by power outages
Modern battery management
power supply and UPS control unit enables the total load to be flexibly divided between secured and unsecured load circuits. This, in turn, allows our machine construction customers, for example, to maintain communication at specifically defined points of their facilities. In other applications it is even possible to completely avoid plant downtimes due to supply voltage,” explains Schürmann.
In the past, current flow was unidirectional. In other words, it was produced in the power plant and transported to the customer via high-voltage, medium-voltage and low-voltage power grids. Nowadays, distribution system operators are faced with the challenge of power generation becoming increasingly decentralized. Agrarian businesses and homeowners alike feed electricity into the low-voltage grid from their photovoltaic and wind energy installations. Since renewable energy is very volatile, it is very difficult to predict load curves from one day to the next. In sunny and windy conditions more electricity than usual enters the grid from renewable energy. If conventional power plants are also feeding into the grid at the same time, it can result in an overload. To meet this challenge, distribution system operators can either lay new cables or invest in smart substations.
To maintain security functions, process controls, and communications processes – such as, for example, in the wind energy sector – we need a constant supply of automated components
Substations are used in the secondary distribution system and comprise gas insulated medium-voltage switchgear, a distribution transformer and low-voltage switchgear. They are used to transform electricity from the medium-voltage grid with a voltage greater than 1 kV into 400 V low voltages. Consumers connected to low voltage outlets of this kind include households, workshops and farms.
FIONA, which stands for functional, intelligent substation automation, from ABB provides distribution system operators with a pre-programmed and scalable solution. From the simple recording of readings, short-circuits and earth faults through to control and regulation, FIONA can be adapted to a variety of customer
requirements. Thanks to the temperature-resistant and electromagnetically compatible design, FIONA is particularly suitable for use in medium voltage applications.
“Since substations can become very hot in midsummer, the components in our automation solution must be able to operate in the widest possible temperature range. As you would expect, this applies in particular to the modules responsible for ensuring an uninterrupted supply to all 24 V consumers,” explains Ulrich Aschenbroich of ABB. “The uninterruptible power supply of Weidmüller with its wide temperature range meets our requirements.” Reliable functionality under the most extreme
temperature conditions is also guaranteed by the temperature compensated charging characteristics, which ensure optimum battery charging. Temperature-dependent battery management ensures that the battery is carefully and correctly charged even at high temperatures. This results in a long battery life and a secure energy supply.
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News in the field of power supply
Published in April 2013
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