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The Design And Implementation Of Intrusion Detection Model For SCADA System

Posted on:2017-05-05Degree:MasterType:Thesis
Country:ChinaCandidate:Z GongFull Text:PDF
GTID:2322330512460934Subject:Engineering
Abstract/Summary:PDF Full Text Request
Urban and rural power grid in our country,three phase four wire system is used in great quantities in the distribution,distribution transformer Y/yn0 wiring.For single phase load users,wells such as electrified railway traction power supply system power supply industrial smelting electricity utilization and all kinds of urban residents,and so on,because of the single phase load Electricity at the same time,most has the characteristics of overloading and changeful low power factor and high harmonic,lead to transformer three-phase unbalanced load The imbalance of the power supply point of three-phase voltage and current and the neutral line current increase,so Copper loss increase line loss transformer iron losses,resulting in enormous waste.It will take appropriate measures when the normal operation of power system three-phase imbalance degree of control in a certain range,ensure the quality of user power supply is of great significance.This paper is study the transformer intelligent three-phase unbalanced adjustment and reactive compensation method,depending on the requirement of the national standard and the readings of the center line on the low voltage side of distribution transformer in current shall not exceed the rated current of low 25% voltage winding,set the regulation scheme.In this paper,design of the middle route of the distribution transformer current suppression and intelligent compensation system USES B/S of system development model,and using the SSH system framework model for design.System of background database used is the mainstream of SQL Server2010 back-end data storage.System optimization,through the analysis of the real-time data according to the actual state of grid adjustment device of cutting compound switch,through the organic combination of interphase and relatively capacitance,balance of the regulating transformer three-phase active load,power factor compensation transformer,reduce the line current,make the transformer at the most reasonable.This article mainly from the reduce the loss of transformer is put forward Saving of electricity,transformer on-line detection technology and the method of intelligent compensation of the loss of system,achieve real-time monitoring of transformer.Based on the data obtained from monitoring of,through the analysis of the working state of treatment response transformer,to provide accurate and reliable data for electric power department,thus power sector can be according to the actual state of powergrid,adjustment device in the cutting of compound switch,eventually achieve the goal of improve the loss of power.
Keywords/Search Tags:Transformer, three-phase unbalance, current suppression, intelligent compensation system
PDF Full Text Request
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