Monitoring in energy technology
The monitoring in energy technology deals with the permanent or at least regular monitoring of conditions of individual electrical installation within a system or network . Since the monitoring is usually coupled with a diagnosis, a corresponding forecast is made possible.
Basics
In the field of power distribution and supply, it is of enormous importance to quickly identify and rectify possible incidents. For this purpose, the behavior of systems and their individual components is monitored and attempts are made to predict the medium and long-term behavior by evaluating measurement data.
The monitoring of equipment from energy technology includes various components of a power grid that can be monitored:
- Power transformers
- Gas-insulated switchgear
- Protection devices
- electric wire
- Surge arresters
- Overhead lines → see also overhead line monitoring
- Circuit breaker
functionality
In order to be able to create the most accurate diagnosis possible, various process steps must be taken into account:
First, the current status of the component or the network must be determined. For this purpose, exact, physical sensor and measurement data such as temperature , humidity , vibrations and many more are analyzed and then evaluated.
These results are then compared with the required reference / target values. It is also possible that no specific target value, but only a limit value to be undercut, has to be observed.
Using the diagnosis and the measured and compared data, it is possible in the last step to make decisions about possible optimization of the electrical installation or preventive measures.
The monitoring system
All of these functions are contained in a so-called monitoring system. This enables network operators to have reliable information about the status of their network or the status of the individual components that can be called up at all times. It shows the operator which installations need to be serviced, repaired or even replaced shortly. A monitoring system is therefore an indispensable requirement for what is known as "condition-based maintenance". The advantage of this modern system becomes clear compared to outdated maintenance. With outdated (preventive) maintenance, the systems had to be switched off at specified time intervals and the individual components replaced depending on their service life. As a result, partly still functional components were replaced, in the event of random defects it was not possible to react as quickly as possible and, moreover, the system could not be operated during this time-consuming replacement process. By contrast, modern technology enables continuous condition monitoring and thus optimal utilization of the lifetimes of the various electrical installations.
Such a system not only relieves the operator of the great expense of monitoring, but also guarantees optimal control of the system and thus ensures an extended "service life" of the system.
By forecasting the medium and long-term behavior of the system components, it is also possible to identify upcoming faults at an early stage and thus reduce unplanned downtimes, which also extends the service life of the systems enormously.
Schematic representation of a monitoring system
- SA: Surge Arrestor = surge arrester
- cable: cable
- OHL: Overheadlines = overhead lines
- CB: Circuit breakers
- GIS: Gas-insulated switchgear = gas-insulated switchgear
- TR: Transformers = transformers
- RDC: Remote Diagnostic Center for remote maintenance and remote diagnosis
differentiation
ICM (= Integrated Condition Monitoring)
An example of this is ISCM - one of the market-leading products:
ISCM is an integrated monitoring system for the condition monitoring of switchgear. Only a single condition monitoring platform is used, which enables the strategic implementation of switchgears and their renovation. This Integrated Substation Condition Monitoring can be individually coupled with other monitoring systems. There are a number of other systems on the Integrated Condition Monitoring market that work in a similar way, such as ICMsys8 or ICMcompact.
SCADA (= Supervisory Control and Data Acquisition )
A Supervisory Control and Data Acquisition (SCADA) combines the function of monitoring, as with ISCM, with the control of the technical processes to be monitored or the system components by means of a computer system.
Web links
Individual evidence
- ^ Dennis H. Shreve: Integrated Condition Monitoring Technologies
- ↑ SungIl Jang: Development of an integrated Condition Monitoring and Diagnosis System (IEC61850) for cubicle-GIS
- ↑ http://www.energy.siemens.com/hq/en/services/power-transmission-distribution/asset-services/monitoring-and-diagnostics/iscm.htm ( page no longer available , search in web archives ) Info: The link was automatically marked as broken. Please check the link according to the instructions and then remove this notice.
- ↑ http://www.energy.siemens.com/hq/pool/hq/services/power-transmission-distribution/asset-services/monitoring/ISCM%20Solution%20Brochure.pdf
- ↑ http://www.siemens.com/iscm
- ↑ http://www.pdix.com/
