Monday, 25 June 2012

Take a fresh look at your system security


Industrial automation networks differ greatly from office networks and, as such, need a different approach to safety and security, as Paul Hingley explains

Alittle known organisation called the CPNI (Centre for Protection of National Infrastructure), along with other government agencies, spends a great deal of time and effort offering practical advice to some of the businesses supporting the UK's major infrastructure requirements. Road, rail and transport industries, power generators, energy providers and water utilities are all potentially high risk in terms of threat. Any type of incident, attack or failure occurring within them would have potentially devastating consequences.

However, it isn't just this type of business that needs ongoing risk assessment and protection of SCADA networks. The same methodical preparation, thinking and implementation should also be front of mind for any manufacturing or process-driven business that could be at risk of attack or production failure. Company systems can be open to any number of threats and, once attacked, it is often too late to retrieve a situation. Think, for example, of a food manufacturer whose quality control procedures are compromised, or an industrial process targeted by environmental, political or animal rights protestors. Conversely, internal threats may appear, either accidental or intentional access violations, or virus introduction. It is my view that many businesses are at best complacent, and at worst potentially negligible, when it comes to protecting themselves and safeguarding their industrial networks' health, particularly when focusing upon automation networks. 

Sunday, 24 June 2012

Smart Grid, Advanced Distribution Management Systems


Not everyone agrees on a precise definition of the smart grid, but most agree the modern grid will become increasingly complex.
As new kinds of loads, sources and equipment are implemented, the nature of the distribution network might evolve from a radial, one-way commodity delivery system to a bidirectional one. As the modern grid grows in sophistication, the need to plan, engineer and operate the network more effectively is critical. Enter advanced distribution management systems (ADMSs). Innovations in distribution management systems (DMSs) are helping address network complexity and making the smarter grid a reality.

A Revolution in DMS

DMS isn't new. Some utilities have used computers to model their networks for nearly four decades using load-flow algorithms to calculate voltages and power flows at nodes throughout the network. More recently, say, for the past 25 years, supervisory control and data acquisition (SCADA) systems have monitored and controlled the grid at key locations such as substations in real time. More recently, DMS combined the two ideas, solving the network model with using a load flow while accessing key real-time data points to enhance the picture of the grid.
As good as they were, first-generation DMSs can't cope with the requirements of a smarter grid. To safely and reliably operate, the modern grid needs a brain with capacity and functionality.