Friday 23 October 2015

Collapsing architecture in infrastructure

The internet has a lot to answer for. Think about your job and how it would be different without the global system of computer networks we know as the inter-super-highway. Some of you might not even have a job without the internet. The information technology research and advisory company Gartner predicts that by 2020 there will be 25 billion industrial and commercial connected devices in use. Here Nick Boughton, sales manager at Boulting Technology discusses how greater connectivity is changing infrastructure.
Collapsing architecture in infrastructure
Collapsing architecture is impacting
 industrial control systems

Collapsing architecture in an automation environment is a fairly new term that refers to the changing way in which systems in a factory communicate with one another. Systems in a plant are segregated into layers - from hardware level on the plant floor through to enterprise resource planning (ERP) computer networks in the office.

Traditionally, each layer of the factory worked on different networks; information from the factory floor was kept away from the office network and vice-versa. This was partly due to security and partly because raw data from sensors and actuators wasn't thought to be particularly valuable to the overall process.

However, in the modern age of manufacturing where margins are tight and everybody is looking for an edge, data can be collated and analysed to better understand factory processes and maximise efficiency.

With a new emphasis on quality and quantity of data, all layers of the factory are starting to communicate with one another. This means traditional network architecture in factories is starting to collapse, giving way to a new overarching, more fluid transfer of information. Industry calls this new level of interconnectedness the Internet of Things (IoT).

Whereas before, PCs on the corporate network couldn't access raw data from SCADA or hardware level, now information can be retrieved through secure access to different network cells.  There is a definite trend, not just for more data, but for more intelligence and this is spreading beyond the factory floor.  

Infrastructure is no longer publically owned. Like electricity and gas before it, water supply has become commercialised and understandably, there is now more pressure to turn a profit.

With this in mind, the factory model of collapsing architecture is starting to be seen in utilities. Competition is driving companies to look at their systems and ask how they can make them more intelligent.

The more data collected in infrastructure cells like pumping stations, the more likely it is to identify useful information. All this data can be collated and analysed to offer better insight and make more informed decisions that result in more profitable outcomes.

For example, let's say a supervisor at a pumping station turns on a pump to fill a reservoir upon arriving to work in the morning. The reservoir fills and the supervisor turns the pump off, job done. However, if you collect data at each step of this short process, certain questions arise.

Is this a peak time of day when the electricity needed to power the pump is more expensive? Can the reservoir wait to be filled during off-peak time? Does the reservoir need to be completely full or is it more efficient to only fill it to 75 per cent capacity? All this information can be processed to form more efficient results.

The IoT has brought about the collapsing architecture model with a view to improving efficiency by making better, more informed decisions. The end goal is to equip industrial computers and control systems with decision-making abilities. This allows the supervisor to concentrate on tasks that require more skill that intelligent automation can't muster...yet.

Friday 2 October 2015

Changing industry standards: one year on

Boulting Technology - Systems integration - BS EN 61439
Pat McLaughlin
In 1998, Google was founded, the first Apple iMac was introduced and the legendary Windows ’98 was released by Microsoft. In a less glamorous but equally important corner of industry, a new commission was being formed to revise the complex IEC 60439 industry standard, which governed the safety and performance of electrical switchgear assemblies. Although Windows ‘98 has long been consigned to history, the new industry standard – BS EN 61439 – only became mandatory on November 1, 2014. 

One year on, Pat McLaughlin, Boulting Technology’s Operations Director, evaluates how original equipment manufacturers, panel builders, electrical engineers, consulting engineers and contractors have been affected by the new BS EN 61439 standard.

Why a new standard?
In a market where the demand to optimise and reduce costs blends heavily with higher needs for assembly flexibility, the introduction of a new set of standards was needed to  guarantee the performance of Low Voltage Switchgear Assemblies.

Switchgear and Control Gear assemblies are multifaceted and have an endless number of component combinations. Before the introduction of the new standard, testing every conceivable variant was not only time consuming and costly, but impractical.

The intricate character of assemblies also meant that many did not fit into the previous two testing categories: Type Tested Assembly (TTA) and Partially Tested Assembly (PTTA). For example, panels which were too small to be covered by TTA and PTTA fell outside the standard. Finally, in the case of a PTTA, ensuring the safety and suitability of a design was often dependent strictly on the expertise and integrity of the manufacturer.

Design verification
Boulting Technology - Systems integration - BS EN 61439
The Boulting Power Centre
The major change introduced by the new BS EN 61439 standard refers to testing. It states that the capabilities of each assembly will be verified in two stages: design verification and routine verification. This means the new standard completely discards the type-tested (TTA) and partially type-tested assemblies (PTTA) categories in favour of design verification.

Although BS EN 61439 still regards type testing as the preferred option for verifying designs, it also introduces a series of alternative routes to design verification.

The options include using an already verified design for reference, calculation and interpolation. The BS EN 61439 standard specifies that specific margins must be added to the design, when using anything other than type testing.

One of the main benefits of the new design verification procedure is its flexibility. Under the old BS EN 60439 specification customers would demand a Type Test certificate for each assembly particularly Incoming Air Circuit Breakers, which was very expensive and time consuming.

The new standard allows users and specifiers to pertinently define the requirements of each application. Annex D of the BS EN 61439 standard provides a list of 13 categories or verifications required, what testing method can be used and what comparisons can be made. In order to optimise testing time, the standard allows derivation of the rating of similar variants without testing, assuming the ratings of critical variants have been established by test.

Dividing responsibility
The second major change implemented by the new industry standard refers to the responsibilities of each party involved in the design, test and implementation of low voltage switchboard assemblies. Unlike BS EN 60439, which stated the OEM or the system manufacturer was solely responsible throughout the testing programme, the new standard divides the responsibilities between the OEM and the assembly manufacturer, or panel builder.

The new standard recognises that several parties may be involved between concept and delivery of a switchboard assembly. The OEM is responsible for the basic design verification. In addition, the assembly manufacturer is meant to oversee the completion of the assembly and routine testing.

For innovators like Boulting Technology, the new BS EN 61439 has brought more freedom and flexibility when designing switchboard assemblies. For example, Boulting Technology has designed and launched the Boulting Power Centre, a range of low voltage switchboards, which are available in 25kA, 50kA, 80kA and 100kA, fault ratings, and up to 6300Amp current ratings.

Although change is never much fun, it’s what technology and industry are all about. If this wasn’t the case, we would all still be using Windows 98 or the indestructible Nokia 5110.