A Data-Mining Model for Protectionof FACTS-Based Transmission LineABSTRACT:

This paper presents a data-mining model for fault-zone identification of flexible ac transmission systems (FACTS)-based transmission line including a thyristor controlled series compensator (TCSC) and unified power-flow controller (UPFC), using ensemble decision trees. Given the randomness in the ensemble of decision trees stacked inside the random forests model, it provides effective decision on fault-zone identification. In the FACTS-based transmission line, if the fault does not include FACTS device, then the impedance calculation is like an ordinary transmission line, and when the fault includes FACTS, then the impedance calculation accounts for the impedances introduced by FACTS device. The line impedance is compared with the protective zone and if the line impedance is less than the relay setting, then the relay issues a signal to trip the circuit breaker (CB). Further, for similar types of faults, the current level may be of the same order at two different points of theTransmission line, (before and after TCSC/UPFC). Thus, before the apparent impedance to the fault point is computed, a more reliable and accurate fault-zone identification technique is necessary for safe and reliable operation of the distance relay.

Existing System: The current trend for building an protection for transmission line is held by statically. Which means there having no knowledge about the accurate voltage and current levels mostly because of using analog meters for measurement. And also remote measurement is also not possible. It leads to the loss of power and also requires lot of man power to monitor and maintain purpose.Problems on existing system:1. Maintenance cost is high and also requires lot of man power for maintenance.2. Computerized relay control is not possible.3. Its not possible to disconnect the relay the power grid quickly.

Proposed System: Here, we extend the existing definitions of modules and we introduce real time transmission line monitoring and relay control system with accurate measurement of voltage and current in FACTS-based transmission line. The main idea to develop this system is to reduce the wastage of power and also to avoid the flow of low and high voltage in the transmission lines. Advantages:1. We can relay the power grid quickly when the voltage or current gets lead or lags.2. The graphical measurement is also possible.3. We can measure the power remotely and also relay the grid remotely. Implementation: Implementation is the stage of the project when the theoretical design is turned out into a working system. Thus it can be considered to be the most critical stage in achieving a successful new system and in giving the user, confidence that the new system will work and be effective. The implementation stage involves careful planning, investigation of the existing system and its constraints on implementation, designing of methods to achieve changeover and evaluation of changeover methods.Main Modules:-1. Connecting meters with power grid:In the FACT-Based transmission line we have to install the voltage and current measurement system and send those measured values to the remote stations for definite intervals.1. Receiving and Monitoring the measured values: In the remote station the measured values frequently monitored. The measured samples are taken for specified period of time. If the measured value exceeds the specified lead or lag values for that particular period of time, an alert message will be displayed and then it automatically relay the power grid in the same time. 1. Admin And User Module: In this module, Users are having authentication and security to access the detail which is presented in the ontology system. Before accessing or searching the details user should have the account in that otherwise they should register first.System Configuration:H/W System Configuration:

Processor - Pentium III

Speed - 1.1 GhzRAM - 256 MB(min)Hard Disk - 20 GBFloppy Drive - 1.44 MBKey Board - Standard Windows KeyboardMouse - Two or Three Button MouseMonitor - SVGA S/W System Configuration:

Operating System : Windows95/98/2000/XPApplication Server : Tomcat5.0/6.XFront End : HTML, Java, JspScripts : JavaScript.Server side Script : Java Server Pages.Database : Mysql 5.0Database Connectivity : JDBC.

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