Hello learners, welcome to this topic and Ring Main Unit that is RMU and FRTU that is Feeder Remote Terminal Unit in SCADA. Ring main unit is a compact sealed for life metal and close to switch gear widely used in urban power distribution networks. It has feature rich compact design, time and cost saving, smart capabilities. An RMU includes a combination of one or more load breakswitch or LBS **** earth switch as incomer. And outgoing feeder and vacuum circuit breaker with associated disconnector and earth for load feeders. RMU is in an SF6 compacts switchgear equipped with an SF6 switch disconnector and vacuums circuit breaker. Its compact design requires the least possible space to install and operate. RMU is complete switchgear and easy to install, saving, installation and commissioning time. Independent of climate and resistance to environmental conditions. The operation and maintenance cost of these units are also low when fitted with IEDS and communication capabilities. The RMU is easy to integrate with the distribution management system and in building a smart grid solution. It's one solution with comprehensive capabilities. The system will monitor all the substation equipment like circuit breakers, release, isolators etc. And the parameters of the incoming and outgoing feeders will be checked in real time in order to maintain system stability, reliability and availability. Supply to be balanced according to the demand during the normal and abnormal conditions. Abnormal conditions are like loss of generation, equipment failures and line falls with peak loads, load shedding. Application of FRTU enables us to automatic data logging, substation level control, energy management, load forecasting etc. FRTU collect, analyze signals are status inputs from either multi function transducer or direct signal modules from the equipment of the substation. Inputs of temperatures that is DTR connected to the RMU. Can be taken through transducers, process this shape and transmit to the master station. Use of MODBUS over RS485 interface protocol to communicate with the MFTs and FRTU shall be capable of acquiring analog values through transducers. Having output as 4-20mA, 0-( -10)mA, 0-10mA etc. Using analog input modules. A minimum number of I/O tags handling capacity shall be 100 I/O tags and 20,000 data points. FRTU have an inbuilt optical coupler to isolate the field signals for digital inputs. FRTU shall monitor suitable features of external battery availability. Check through potential free contact as DI signal to FRTU and suitable provision in FRTU to supervise and prevent accidental serious discharge of the battery. FRTU consist of the following parts analog inputs( 6/8 input AI card), control outputs, power supply. AC input supply, DC output required here is the block diagram of various components connected to an intelligence system. The details of the same are explained in the upcoming session based on data requirements. Meters are selected for arm you panel protection relay intelligent electronic device (IED), battery control card, modem, field remote terminal unit (FRTU) module. Available remote parameters IED are system voltage ( phase voltage and line voltage). System current, neutral current, frequency, power factor phase angle, active power that is kilowatt hour, reactive power, apparent power, active import energy. Active export energy, reactive inductive energy, apparent energy, maximum and minimum value of system voltage, maximum and minimum value of system current. FRTU is the main logic controller that process the field signal data from IEDs and MODBUS and takes feedback from LBS based code breaker and gives the user logic based command. Necessary inputs for SCADA are provided by FTRU on the IEC-608705-104 protocol. That's filed as one. Not for protocol. The effort to you controller offers the option of communicating via proof in it and more elasticity. The new feature is a support for an optional SD card programming is carried out using PC works express or Pc Works IEC six W 3, Protocol or various other user defined platforms. The four G modem supports comprehensive management, a serial console. The built in http and telnet server access locally via the internet. Ports are remotely via the wireless network and provide fault configuration, performance and security management. I C M P. Pink and trace route of our networks, diagnostics. In this section we will see about the future of four G. Modem. Dual sim support, cereal and internet business devices such as post terminal R. Tus data loggers and energy meters. Dual sim for two service providers with auto switch over based on health check, optional Rx diversity antenna and gain antennas. Supports LT he H S D P A GpRS, GSM cellular networks with static and dynamic address negotiation and P A P and C H J. P authentication, unity based address translation and fourth mapping for data separation. I P SEc. G R E VPN firewall is for the data security, static and dynamic routing protocols. WFP CBF and strict priority based ICMP Pink trace route and event logging. Keep alive and self heal feature with iCMP ping to multiple servers. History DP Associates, Telenet sn mp and SMS based management with the remote form were upgrade led indication for cellular signal quality and connectivity status. Support for compliant cabinets and power options. The block diagram shows a horizontal network of data flow from the various field equipment like I'd battery charger, production relays etc. The required data is communicated an internet based PLC over More of us are as for 85 This PLC module sends data through your world communication network to your four G. Model. All these companies are based on an arm you from the modem. The data is sent through the mobile network to the scada control center. The block diagram will give the learner an overall understanding of the integration of effort to you in arm you with this. We conclude this topic. Thank you.
