Electricity + Control February 2018

round up

TRANSFORMERS + SUBSTATIONS

Protection with flexible and space saving DEHNcord

as the terminal compartments of end loads, cable ducts or flush-mounted systems. The compact de- sign of DEHNcord allows it to be installed wherever the performance of a standard Type 3 surge pro- tective device for terminal equipment reaches its limits. The lighting protection offered by DEHNcord helps to offset the possibility of lost productivity and costs for the repair or replacement of equip- ment after an unprotected lighting strike.” DEHNcord therefore ensures surge protection where space is restricted. It can also be used at the transition from lightning protection zone (LPZ) 0B to 1 or higher. DEHNcord meets the requirements of EN/IEC 61643-11. It has a short-circuit current with- stand capability Isccr of 25 kArms in case of mains- side overcurrent protection and a total discharge current of 20 kA (8/20 µs). Enquiries: Hano Oelofse.Tel. +27 (0) 11 704 1487 or email hano.oelofse@dehn-africa.com

The South African summer season brings with it widespread possibilities of lightning strikes. The massive voltage fluctuations caused by lightning can damage sensitive equipment, as well as cause data loss on computers, servers and storage devices. To combat this, the DEHNcord surge arrester from lightning and surge protection expert, DEHN Africa, offers reliable protection from surges caused by light- ning interference, and is flexible and space-saving. Hano Oelofse, DEHN Africa technical director, notes that Type 2 surge arrestors are surge pro- tective devices designed to discharge the currents generated by indirect lightning strikes, and which cause induced or conducted over-voltages on the power distribution network. They are installed in the main distribution switchboard. He says, “The DEHNcord Type 2 surge arrester, available in single-pole, two-pole and three-pole versions, can be fitted in installation systems such

ADMS allows for utilities to manage reliable, safe, efficient power grids

Schneider Electric believes that its Advanced Distribution Manage- ment System (ADMS) will become the pervasive platform for utili- ties to manage reliable, safe and efficient operations of power grids. ADMS will facilitate management of end-to-end processes in and around the control room and will be instrumental in the process of IT/OT transformation. “Increasing energy demands has led network operators to search for an efficient operational platform, gathering all applications and solutions in one integrated platform, model and user interface. It needs integrated sophisticated software products, which may unify OperationTechnologies (OTs) and InformationTech- nologies (ITs) in the single platform and Schneider Electric believes that ADMS is the best solution,” explains Taru Madangombe, Vice President of Energy in Southern Africa for Schneider Electric. The ADMS is a modern and comprehensive solution for elec- trical network management, control, monitoring, analysis, optimi- sation, planning, simulations and training, applicable on all voltage levels from low voltage up to the transmission. It is a fully integrat- ed smart control system for utilities, integrating six modules into a single platform for a seamless operation of power systems: • Remote control and dynamic network monitoring and manage- ment (SCADA)

• Advanced mathematical model, simulations, analysis, optimisa- tion and planning of distribution network (DMS) • Advanced mathematical model, simulations, analysis, optimisa- tion and planning of transmission network (EMS) • Comprehensive workflow of unplanned and planned outages (OMS) • Control and management of generation units (PCS) • Distribution Energy Resource Management (DERMS) “The ADMS integrated solution provides many advantages – it has one unified IT platform; user interface, database, network model; one place for all system configuration and administration and one maintenance procedure and process,” continues Madangombe. “ADMS scales to cover the smallest to largest networks with high performance. It is built on top of secure operating system and middleware, with encryption of all traffic and secure authentica- tion, based on Microsoft Active Directory and Kerberos protocol. It has been deployed in over in over 80 utilities worldwide”. Enquiries: Brighton Mwarehwa. Email brighton.mwarehwa@schneider-electric.com

Taru Madangombe, Vice President of Energy in Southern Africa for Schneider Electric.

Electricity + Control

FEBRUARY 2018

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