Section 18 in Rajasthan Electricity Regulatory Commission (Metering) Regulations 2007
18. Remote Transmitting Units and Transducers.
(1)The RTU and Transducers shall be used for SLDC/Sub SLDC data acquisition and monitoring of grid operation and the data so obtained may be used as standby to automatic/remote metering schemes and vice versa.(2)Instantaneous value of following data shall be made available either directly by the meter or through transducers and RTUs from selected individual stations to sub-load dispatch center and load dispatch center continuously.(a)MW (Import/export).(b)MVAr (Lag and lead).(c)Voltage.(d)Current.(e)Frequency.(f)the status of various isolators, circuit breakers and transformer tap positions shall be communicated through RTUs .Note. - The RTUs & Transducers requirement shall not be considered where the meters are capable of transmitting various parameters to SLDC / sub LDC.(3)The transducers shall be suitable for 3 phase 4 wire MW and MVAr measurement. Single transducer giving output of MW, MVAr, voltage, frequency and ampere shall be preferred in place of individual transducers for each metering point.(4)The RTU shall be located in the PLCC room or at location as per optimum cabling requirement. The size of the CT & VT cable to the transducer shall be the same as provided in the metering circuit.(5)The data collected by transducers and fed to RTU shall be processed in the RTU and output will be provided in the digital telegraphic form. Transmission of these data to the load dispatch center can be through any of the communication links or private network of licensee or low power radio. The data shall again be processed at the load dispatch end in Data Concentrator Unit and converted to analog data and displayed on the monitor screen. The RTU shall be utilized for monitoring and for remote control of feeders / breakers, located at remote sub-stations.
