Tuesday, May 1, 2012

The future Security Moves on solar power


Solar panels generate power directly from the sun. They convert the sunlight that they draw directly into electricity; this form of power is friendly to the environment, as there are no harmful gases or chemicals that are used in producing this power. This is therefore better for the environment.
The solar panels are made up of a collection of individual silicon. A single solar cell can produce about 0,5volt. Solar cells are grouped together to create a panel, which can produce up to 24 volts output. Solar panels can also be wired in parallel, this will increase the power output creating more power, and if wired in series, this will increase voltage for 24, 48 or possibly even higher voltage systems.
The three types of solar panels are mono-crystalline, polycrystalline and amorphous. At present, PSS Distributors is concentrating on two types, mono-crystalline and polycrystalline. We already discussed in my earlier post.

The differences between the panels are as follows:
Monocrystalline – All crystals face the same direction. This form of solar panel is the most effective, but the cost factor is a lot more expensive. Slices are cut at sizes of 0,2 and 0,4 mm thick. These are then put together as individual cells, wired together in the panel. Manufacturing temperature is around 1400 degrees Celsius.

Polycrystalline – Crystal faces have different directions, grains are not parallel and can also be called multi-crystalline. These panels are less expensive, but can also be less efficient. The cells are not single crystals but a block of many crystals. Manufacturing temperature is a bit lower than Monocrystalline at about 800-1000 degrees Celsius.

Amorphous – This is the angle of the adjustable solar panel, which can be changed two or more times during the year. This helps increase the solar output by approximately 25%.
When you have decided on the location of the solar panels, ensure you have a good amount of sunlight between the times of 9 am – 4 pm. It is not advised that solar panels be placed in the shade, but remember that heat build up can cause the panel to be less efficient. There should always be spacing around the panels, this will ensure that there is sufficient cooling and ensure that the panels do not build up to much heat. 

Solar panels should always face the equator for effective coverage. So if living in the southern hemisphere, the solar panels would face in a northern direction. The angle of the panel should only be changed twice per year. In winter +15° latitude and in summer -15° latitude. This will increase the solar panels output by a further 25%.
Tracking solar panels are the most effective type as they follow the sun, but the cost of these units are expensive and during winter, may not be as effective. Solar panels are a more cost effective way of ensuring constant power as well as ensuring that the environment remains emission free and allows the environment to remain green.

Having now completed the construction of a 9, 4-megawatt solar farm in the province of Turin, the company turned to address the problem of guaranteeing the highest possible levels of protection.
“The client asked us to design a solution in which the network infrastructure was both sturdy and scalable so that it could be used simultaneously by the security system, the video-surveillance system and the other equipment used to monitor the production of electricity. Moreover, in compliance with the applicable laws in force, the video-surveillance system had to ensure low luminous impact at night and, therefore, had to be able to operate satisfactorily without any lights on, except in exceptional circumstances,” explains Claudio Toaldo, owner of Sicurtel, the company that built the plant.
The plant took about two months to complete, including meetings with the client and the realisation of the design plan.
Given the distance of the perimeter (about 4000 metres) and the possible electromagnetic interference caused by 12 inverters installed on the field, Sicurtel decided to construct a closed ring fibre-optic Ethernet infrastructure using O-ring technology with 12 field switches and an extended temperature range of -40°C/+75°C.
The network hosts 28 ERMO 482 X PRO Cias microwave barriers and 11 Ulisse Compact IP 36 + Videotec 110 mt IR cameras.
The Cias barriers are connected on the field via 15 485/Ethernet IB-FMCREP-ETH converters and are controlled by means of an IB-SYSTEM IP server.

The Videotec cameras used for the surveillance system guarantee lowest environmental impact during nighttime monitoring and are also fitted with a powerful optical zoom for close-up inspection when necessary.

Sicurtel considered the Milestone XProtect system to be the only fully integrated platform that could manage all the field equipment on an IP platform, hence satisfying its client’s requirements.

“We decided to use the Milestone XProtect Corporate video management and recording system,” continues Toaldo, “because it allows you to record video images and transmit them to the security company’s control room. This enables the control room to handle emergencies and, at the same time, collect information on any alarms detected by the system and recorded by one of at least three pre-set cameras, which the Milestone video management software (VMS) immediately focuses on the security barrier section that triggered the alarm. This is extremely helpful to the work of the security companies, as they are able to quickly and effectively verify all intrusion attempts”. 

The system provides the end user with real time data on the production of electricity. The XProtect Smart Client can be used from the company’s headquarters. Furthermore, XProtect Mobile is a useful and powerful tool for maintenance operators. It is used to remotely plan and verify all interventions, whenever and wherever they are. 

The Milestone VMS supports a number of I/O IP modules to allow the operator, the end user and the security company to use XProtect Smart Client to turn on the lights installed along the perimeter when an alarm is triggered at night, to monitor anomalies detected inside electrical substations or special situations such as a lack of power supply.

“The possibility to integrate the anti-intrusion security system, the video-surveillance system and the electricity production monitoring equipment within the same network infrastructure means that the end user has full control over all the systems installed at the solar farm and, at the same time, can realize important economies of scale, while paving the way for all future upgrades to the systems,” highlights Toaldo.
The solution guarantees efficacy and timely interventions by technical assistance teams managed by Sicurtel using remote systems. In particular, all the routine maintenance operations and interventions to resolve any malfunctions detected by the system that do not imply the replacement or repair of and field devices or equipment are managed via the Internet.

8 comments:

Anonymous said...

A dazzling future for solar power?

Solar power is expected to provide almost a quarter of the world's electricity supplies by 2050, according to a new report published by the International Energy Agency (IEA).

Eleven percent of total supplies are predicted to come from solar panels on homes and offices while a further 11 percent will be provided by central solar power stations feeding clean electricity to populous areas.

Solar power currently accounts for 0.5 percent of total electricity supplies, but this will need to rise if cuts in carbon emissions are to be achieved, according to the IEA.

Another prove ...
Good job Mr. Arindam Bhadra

visit me on http://lightyears.blogs.cnn.com/tag/matthew-knight-for-cnn/

Rgds
Matthew Knight for CNN

Anonymous said...

Solar configurations are particularly useful when conventional power isn't readily available. However, it has it's drawbacks:
1. more components mean more failures
2. generally batteries are part of the configuration, requiring maintenance
3. not too effective in lo-sunlite regions, or sites
4. the camera and power systems may be tied to each other so if one fails, they can't be used with other camera or power sources
An alternative to consider, in WIRED network settings, is POWER-OVER-ETHERNET. This is a low-voltage power supply over the CAT-V cable- a more stable, robust solution for remote power applications. The current standard offers up to 15w (about 1A @ 12VDC for you other EE's out there).. There is a POE+ standard that looks to offer 25-50w.

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Caezar said...

The Solar Power is considered as the new energy for us and it is green power for the environment. We should encourage more people using it in the life.
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