For decades, Remote Terminal Units (RTUs) have been utilized in substations to monitor circuit breaker positions, alarms, voltages/currents, temperature and other data from a variety of wired sensors, or to control breakers, tap changers, and capacitor banks.  These remote, real-time data enabled operators to perform supervisory control and data acquisition functions remotely.

However, with the earliest RTU implementations dating back to the late 1970’s, many legacy systems are no longer supported by the original manufacturers and spare parts can be difficult to acquire. In addition, continued advancements in the processing power and control capabilities of modern RTUs mean these units can often eliminate additional boxes, such as HMIs, Alarm Annunciators, Security Gateways, Logic Controllers and Communications Processors.

As a result, transmission and distribution substations that rely heavily on legacy RTUs are ripe for upgrade.  Unfortunately, the task traditionally meant not only replacing the RTUs, but also disconnecting and reconnecting hundreds of wires to monitored and controlled devices.

“Even medium-sized distribution substations can have 200-300 I/O points that need to be monitored by RTUs, The larger transmission substations can have well over 1000, so the magnitude of an RTU retrofit can be significant. In addition to the efforts to re-wire, there’s also the need in transmission to check out each re-wired circuit using skilled personnel in a costly and time-consuming commissioning process, and possibly applying for an outage. As a result of these high costs, utilities have stretched the service life of legacy RTUs to the breaking point, increasing the chances of disruptive failure and loss of real-time substation visibility.”

We assess your existing installation and develop a clear plan for retrofits and enhancements that fits well into your budgetary and business needs. With our knowhow and trusted expertise, we ensure reliable project planning, implementation, and a seamless integration of the identified retrofits and enhancements.

Based on the existing SCADA System and RTU functionalities required We do suggest or chose the appropriate Brand, We do deal with Multiple Brands of RTU and suggest FIT for Purpose Solutions.

Please Contact us Mohammed.iqbal@scada-world.net  +971 55 66 33 652