FLIR provides efficiencies for solar park

For a new solar park, located in Sebis, Arad, Romania, Omega Seguridad from Sevilla, Spain, installed 22 FLIR thermal imaging cameras for perimeter surveillance purposes.
As an increasingly important provider of electricity across the globe, solar parks need to be effectively secured. The threats these installations face are the same as for any other energy producing facility: vandalism, sabotage and terrorism. Based on a proven track record for perimeter protection projects across Spain, Omega Seguridad has also been able to offer its expertise to solar park projects in other European countries like Portugal, France, Italy and now Romania.

Largest park
The new park is the country's largest and also one of the largest parks in Europe. The park has been developed by Bester Generación, a leader in the renewable energy market, specialised in the promotion, construction, operation and maintenance of infrastructures for the production of clean energy. It stretches across 200 hectares and includes some 72,000 photovoltaic panels, amounting to 15 MW of power. The new solar park is said to ensure the need of energy for around 100,000 people.

The total perimeter, including two separate confined areas of approximately 2.1 km, could be covered with a total number of 22 cameras. On average, this amounts to approximately 1 thermal camera per 190 metres. For this particular project, Omega Seguridad relied on FLIR's SR series of surveillance cameras, offering high quality thermal imaging in any night- or daytime environmental conditions. More specifically they chiefly used the SR-313 camera with 35 mm lens and 320 x 240 resolution, next to the SR-324 camera with 19 mm lens and 320 x 240 resolution. The SR-Series of security cameras provide high contrast imagery optimised to get the most out of video analytics software. In this case, video analytics was provided by Spanish company Davantis.

Less cameras
Antonio Millán Fernández, project manager at Omega Seguridad, explains why his company always makes an extra effort to convince the customer to choose thermal imaging cameras: "Thermal cameras can see much farther than traditional CCTV cameras and therefore you need less of them. So in short: less cameras, less issues."
According to FLIR thermal cameras also have a higher accuracy and they generate fewer false alarms, which ultimately results in less frustration and less workload for the control room operator. "Obviously, we no longer experience light related false alarms," comments Vicente Nanclares Ocio. "Sometimes, car headlights can set off false alarms, but since thermal cameras are unaffected by light, they are also not disturbed by it. Thermal cameras also allow us to see better through fog. Sometimes, the fog can be so dense that traditional CCTV cameras are unable to see through it."

Cost savings
In addition the result gives a significant cost saving compared to traditional CCTV cameras not only in actual hardware but also in power consumption. Although a thermal camera is still more expensive than a visual video camera, the investment cost for perimeter surveillance will still be lower, since you need fewer camera units. Fewer cameras also means that there will be less required investments for all camera-related equipment (meaning: all equipment that is needed to get the camera operating properly and to get the video signal onto the control room screen).

All these added costs need to be made per camera unit. By reducing the number of required cameras, thermal imaging allows customers to make significant savings with the camera-related equipment and civil works. On top of that, thermal imaging cameras need no lighting equipment whatsoever and will operate with the same accuracy during night and day. Last but not least, Omega Seguridad calculated that the overall power consumption of a project with traditional CCTV systems is about 50% higher than the power consumption of a project with thermal cameras. This is a considerable saving on the electricity bill of the end user.

"For distances between 60 and 120 metres that would require two conventional cameras, but only one thermal camera, the cost of equipment involved on both systems would be equivalent," comments Enrique Delgado Torres, engineer and project manager at Omega Seguridad. "For distances between 120 and 180 metres where three conventional cameras would be required, the equipment associated to the thermal system becomes more economical. Longer distances will make the advantage bigger."

"The more bends and curves a perimeter has, the more camera positions you will need to have a sufficiently good view," comments Vicente Nanclares Ocio, director of the engineering department. "Luckily for us, solar parks generally tend to have straight shapes, so this allows thermal cameras to see even further than 180 metres."

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