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[av_heading heading=’SCADA Networks with Cellular’ tag=’h3′ style=” size=” subheading_active=” subheading_size=’15’ padding=’10’ color=” custom_font=” custom_class=”][/av_heading]
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Background
GAIL (India) Limited is the largest gas transmission and distribution company in India. Facing challenges such as aging infastructure and unstable pipeline controls near their New Dehli distribution pipeline, GAIL found it difficult to meet the increasing demand for natural gas in the area. To address these issues, GAIL undertook an aggressive plan to upgrade the pipeline network with an advanced remote monitoring and control system. This remote monitoring system would reduce operating costs by allowing technicians to monitor the aging infastructure without on-site visits, allowing the company to provide a higher quality of service while reducing engineering expenses, on-site visits and travel time. The development of this solution required a simple wireless communications device that would transmit monitoring data from the field controllers to the operations center.
The project requirements included:
- Transfer data from pipe flow controllers to a SCADA system with high-speed HSPA+ cellular
- IPsec VPN, RS-232 and RS485 serial to provide a secure remote serial connection for a variety of flow controllers
- Longevity with EMC level III and resistance to India’s warm, humid climate
- Compact design for control panels
Solution
- The InGateway601 is a compact industrial gateway, able to transmit serial data over GPRS, WCDMA and HSPA+. It supports an RS232 or RS485 software selectable serial ports with support for a wide range of serial RTUs and PLCs. The IG601 monitors the flow controllers and uploads the data in real-time by translating the serial data to standard TCP/IP.
- The field devices were designated for a ten-year lifecycle. In order to provide continued network security for these devices over a ten-year lifecycle, GAIL chose to protect the communications with an IPsec VPN. Two Cisco routers would act as the primary and backup VPN servers to provide high avaibility while protecting the system from network or power outages.
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[av_heading heading=’SCADA Networks with Radio’ tag=’h3′ style=” size=” subheading_active=” subheading_size=’15’ padding=’10’ color=” custom_font=” custom_class=”][/av_heading]
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Background
In Nokia the water management data transfer network is being built and developed with a long-term perspective. Different generations of equipment operate together, allowing the network to be renewed one part at a time. SATEL radio modems have been used in Nokia Waterworks since the 1990s, in remote monitoring and control at various locations. The network currently has around 50 substations and four receiving stations. The shortest interval between stations is around 300 m and the longest around 6 km. Connecting new equipment into the remote monitoring and control system will also be easy in future. With the aid of automation systems, operations at water intake plants, the central waterworks, the water mains and wastewater sewer networks, and wastewater pumping plants are monitored and controlled.
Benefits
Productivity at the waterworks is improving, because the maximum ratings of plants and equipment can be reduced with a direct impact on operating costs. The soundest reasons for using SATEL radio modems are reliability and the capacity to operate a network oneself. Long distances, a rugged landscape and changeable weather conditions easily present challenges for data transfer. Inexpensive operating costs are also a clear advantage.
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