FROM ENERGY DATA COLLECTION TO REGRESSION ANALYSIS
Project location
Nürnberg, Germany
Year of implementation
2023
Application
Power quality and energy analysis
Hardware
UMG 512-PRO, UMG 509-PRO
Software
GridVis® Expert
Service
Replacement of existing devices
CREQUIREMENT
Veltins is one of the largest German breweries. Accurate operating data is essential for the continuous expansion and modernization of the production facilities, especially in times of rising energy costs. To this end, the pulse inputs of the meters were initially fed to the production data acquisition system via PLC. This procedure was to be replaced by direct recording based on measurement devices with suitable interfaces. The requirements of the departments are diverse. While the electrical workshop is mainly concerned with safety, capacity planning and power quality parameters, the process control technology focuses on energy management and ISO 50001 certification.
SOLUTION
IIn 2009, DATEV conducted a trial run with a UMG 604 power analyzer in combination with a UMG 103 energy analyzer. Updates are even available for the UMG 604. Impressed by the quality, DATEV has been installing only Janitza devices in new systems for several years now. In 2023, the company decided to replace its existing devices as well. Once this measure has been completed, around 700 Janitza devices will be in service at the Nuremberg headquarters alone. UMG 509-PRO and UMG 512-PRO power qualitiy analyzers are installed at the outputs of the transformers and UPS systems. The data is analyzed and evaluated using the power grid monitoring software GridVis®. It provides an overview of the transformers and UPS systems with load profile, utilization, efficiency, and power loss. Operators can also view different time periods via a dashboard. Devices from other manufacturers can also be integrated – all that is required is an open interface. In the data center, this option is used to record both the electrical power consumption of the IT systems and the cooling capacities. The connection is made via BACnet to a multi-protocol server, which forwards the data to GridVis® via OPC UA. The software also performs regression analysis, which takes external influences such as working hours and weather conditions into account. This is the only way to evaluate energy efficiency measures in a meaningful way.
CUSTOMER BENEFIT
Veltins derives multiple benefits from the system, for example in terms of energy tax refunds. There are also key performance indicators (KPIs) that show the relationship between energy and production volume. This provides a precise insight into the plant, even into very complex processes. Thanks to open interfaces, the measurement devices can be used in several systems in parallel: Meter readings and active power are sent to the in-house PDA system, while the GridVis® can also be used to obtain other valuable data, for example on power quality. The measurement devices also enable residual current monitoring (RCM). This makes system monitoring much easier and also ensures greater safety. Above all, it makes the recurring insulation measurement in accordance with DGUV regulation 3 superfluous.
