Sietec Industrial Automation
For the fast-growing system intergrator Sietec Industrial Automation, CTN provides engineering capability to operate its customer in the Zeeland region.
From its own recruitment, CTN has been able to provide an experienced Siemens S7 PLC engineer and will eventually be taken over by Sietec.
Power Management System for luxury vessels
HyPS (Hybrid Power Systems) company builds energy systems for medium-sized vessels.
These are often hybrid combinations of battery banks (batteries), diesel generators and grid converters. On board the ship, the grid (a copper rod) is maintained at approximately 700 Volt voltage by the aforementioned suppliers. The grid also includes consumers, drive systems such as thrusters, but also lighting and heating.
Our engineer deals with the Battery Control System (BCS) and the umbrella Power Management System (PMS). The latter is responsible for the ‘accounting’ (how much power is available, how much is asked) and switching of suppliers and consumers depending on the situation.
The BCS consists of one or more Battery Sets, which consist of a converter, a Battery Monitoring System and a String of 4 to 6 modules (batteries). A module contains 24 cells.
All information from the BCS is sent via CAN messages to the BCS PLC (Bachmann).
From that, status and control messages are sent over Modbus TCP to the PMS (also a Bachmann PLC).
An important parameter for a battery system is the State Of Charge (SOC): how much% is the battery loaded. The CAN traffic is significant: hundreds of signals are exchanged from the battery system and the BCS converter. The converter gets setpoints that keep the voltage and current (during loading and unloading) in check.
Bachmann PLCs are special, because they are programmed by C ++!
Helwin Beta is an offshore high-voltage transformer platform. Here, 155 kV AC voltage is converted to 320 kV DC. For all systems on this platform such as cooling water system, HVAC, lighting and control, 400V is required. To provide this, there is also a 10 kV distribution. On behalf of IV Oil & Gas, Control Talent Net has assisted in putting the 10 kV installation into operation. The work consisted of the following:
- Change trip settings of the Siprotec modules with Siemens Digsi software;
- Downloading the software in the Siprotec modules;
- Interlocking testing by switching the power switches;
- Trouble shooting in Siemens Digsi CFC software from the Siprotec modules.
Applied knowledge: Siemens Siprotec, Siemens Digsi CFC, High voltage systems, Medium voltage systems, Commissioning
Software changes in existing tunnels on behalf of Rijkswaterstaat must be carried out according to the WWAS (Work Procedures Adaptation Software in existing tunnels, part of the tunnel standard). Based on impact assessment, which heavy-duty regime is to be applied, is determined. The severity regime to be applied leads to a number of documents to be drawn up, which provide a good insight into the risks and allows for a controlled implementation of the requested changes.