SCADA
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bharathp
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#1
21-03-2010, 08:29 PM


As i am cse student ,am doing seminar and presentation on SCADA i need full report and ppts of SCADA .. so please help me out . i need report more than 20 pages
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21-03-2010, 10:18 PM

please read topicideashow-to-SCADA-Supervisory-Control-and-Data-Acquisition for more technical details and presentation of scada
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
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#3
17-02-2011, 12:24 PM


.doc   016 Scada for TELEPHONE EXCHANGE With Bluetooth.doc (Size: 30.5 KB / Downloads: 59)
SCADA FOR TELEPHONE EXCHANGE WITH BLUETOOTH INTERFACE

This project and implimentation is designed to form bridge between rural exchanges and district telecom and to statewide telecom. By implementing this idea in a telephone exchange will improve the quality of work.
We have considered many factors in this project and implimentation starting from coaxial cable to optical fiber cable along with security and safe operation of the exchange, without any human interference.
By implementing our idea, the user can identify the cable failure (conductor), OFC (Optical Fiber Cable) failure, fire hazardous, human interruption, RDX bomb detection, air conditioner failure, generator and UPS monitoring. All the above plays a vital role in almost all the exchanges irrespective of the size.
We would like to provide embedded solution for the above. A perfectly crafted 16F877A controller will be used to make further perfection of processing.
All the above mentioned events will be demonstrated lively. This is not a simulation; this could be the real application model.
Status of the one exchange will be connected to the main exchange using SCADA software. This software allows to propagating the exchange related parameters to web. If incase of any communication failure, can be identified automatically.
Both the transmitting person and receivers can identify the transmission failure.
Parameters and Events taken into consideration
1. OFC failure
2. Coaxial cable failure
3. RDX bomb detection
4. Intruder sensing
5. UPS voltage monitoring
6. Major rectifier bank monitoring
7. Floor temperature monitoring
8. Changed number announcement
9. No tapping
10. Auto fire put off
11. Stand by air conditioner ON
12. Flame detection
13. Multimedia for all
14. Staff attendance
All the above events can be made into graphical form can be recorded without disturbing the acquiring. This could be a single chip solution for SCADA telephone exchange.
This project and implimentation consists of self-sufficient sensors and transducers supported with embedded controllers.
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#4
06-05-2011, 12:07 PM

Abstract
SCADA systems are widely used in industry forSupervisory Control and Data Acquisition of industrialprocesses. Companies that are members ofstandardisation committees (e.g. OPC, OLE for ProcessControl) and are thus setting the trends in matters of ITtechnologies generally develop these systems. As amatter of fact, they are now also penetrating theexperimental physics laboratories for the controls ofancillary systems such as cooling, ventilation, powerdistribution, etc. More recently they were also appliedfor the controls of smaller size particle detectors suchas the L3 muon detector and the NA48 experiment, toname just two examples at CERN.SCADA systems have made substantial progressover the recent years in terms of functionality,scalability, performance and openness such that theyare an alternative to in house development even forvery demanding and complex control systems as thoseof physics experiments. This paper describes SCADAsystems in terms of their architecture, their interface tothe process hardware, the functionality and applicationdevelopment facilities they provide. Some attention ispaid to the industrial standards to which they abide,their planned evolution as well as the potential benefitsof their use.
1 WHAT DOES SCADA MEAN?
SCADA stands for Supervisory Control And DataAcquisition. As the name indicates, it is not a fullcontrol system, but rather focuses on the supervisorylevel. As such, it is a purely software package that ispositioned on top of hardware to which it is interfaced,in general via Programmable Logic Controllers (PLCs),or other commercial hardware modules.SCADA systems are used not only in most industrialprocesses: e.g. steel making, power generation(conventional and nuclear) and distribution, chemistry,but also in some experimental facilities such as nuclearfusion. The size of such plants range from a few 1000to several 10 thousands input/output (I/O) channels.However, SCADA systems evolve rapidly and are nowpenetrating the market of plants with a number of I/Ochannels of several 100 K: we know of two cases ofnear to 1 M I/O channels currently under development.SCADA systems used to run on DOS, VMS andUNIX; in recent years all SCADA vendors have movedto NT. One product was found that also runs underLinux.
2 ARCHITECTURE
This section describes the common features of theSCADA products that have been evaluated at CERN inview of their possible application to the control systemsof the LHC detectors [1], [2].2.1 Hardware ArchitectureOne distinguishes two basic layers in a SCADAsystem: the "client layer" which caters for the manmachine interaction and the "data server layer" whichhandles most of the process data control activities. Thedata servers communicate with devices in the fieldthrough process controllers. Process controllers, e.g.PLCs, are connected to the data servers either directlyor via networks or fieldbuses that are proprietary (e.g.Siemens H1), or non-proprietary (e.g. Profibus). Dataservers are connected to each other and to clientstations via an Ethernet LAN. The data servers andclient stations are NT platforms but for many productsthe client stations may also be W95 machines. Fig.1.shows typical hardware architecture.

Download full report
elettra.trieste.it/icalepcs99/proceedings/papers/mc1i01.pdf
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29-06-2012, 05:04 PM

SCADA


.docx   SCADA.docx (Size: 624.66 KB / Downloads: 26)

INTRODUCTION

SCADA stands for Supervisory Control, and Data Acqiuisition System. As name,indicates it is not fully control system, but brather focuses on Supervisory level. As such, it is a purely software package that is positioned on top of hardware to which it is interfaced, in general via Programmable Logic Controllers (PLCs), or other commercial hardware modules.
Data acquisition refers to the method used to access and control information or data from the equipment being controlled and monitored. The data accessed are then forwarded onto a telemetry system ready for transfer to the different sites. They can be analog and digital information gathered by sensors, such as flow meter, ammeter, etc. It can also be data to control equipment such as actuators, relays, valves, motors, etc.

SCADA system consists of :

1. One or more field data interface devices, like RTUs, or PLCs, which interfaceto field sensing devices and local control switch boxes and valve actuators.
2. A communications system used to transfer data between field data interface devices and control units and the computers in the SCADA central host. The system can be radio, telephone, cable, satellite, etc., or any combination of these.
3. A central host computer server or servers (called SCADA Canter, master station, or Master Terminal Unit (MTU)
4. A collection of standard and/or custom software [sometimes called Human Machine Interface (HMI) software or Man Machine Interface (MMI) software] systems used to provide the SCADA central host and operator terminal application, support the communications system, and monitor and control remotely located field data interface devices.
Each of the above system components will be discussed in detail in the next sections. SCADA, describes a number of remote terminal units (RTUs) installed on a pipeline or on offshore platforms which communicate with a master station computer at a centrally-located room. An RTU is a microcomputer-based system with analogue and digital input/output interface to the instrumentation and control system at that remote location. Each RTU provides data acquisition to a centrally –located master station computer system using a datatransmission technique generally unique to hat system supplier. The master station computer, under software control, enables continuous data acquisition of all remotely located RTUs and supplies remote control capability when initiated by the system operator.

The master station acquired data is displayed to the system operator or colour VDUs using a facility- related graphic display layout and also provides data printout capability on a regular basis.All these devices are interconnected to a SCADA system providing data acquisition and remote control capability at a centrally- located control room. Operational data display is in a concise format, as are hourly, daily or batch reports. Remote-control capability generally provides start and stop control of pumps and open and close control of valves. Operational parameters, such as pressure and flow conditions, can be remotely regulated by the centrally- located operator via the SCADA system so that pipeline or offshore operations can be routinely monitored for upset conditions or can be regulated to achieve optimal operational conditions within the safe limits established for the monitored facilities.
In SCADA system,the RTU accepts commands to operate control points, setanalog o/p levels, and provide responses, it sends status analog, and accumulator data to SCADA master station. The data representations sent are not identified in any fashion other than by absolute addressing. The addressing is designed to correlate with database contained in the SCADA master station, and the RTU hasn’t knowledge of which unique parameters it is monitoring in the real world. It simply monitors certain points and stores the information in a local addressing scheme, figure.1.llustrate the data and control flow between master station and one or more RTUs.

The SCADA master station is part of the system that should ‘know’ that first status point of RTU number ‘x’ is the status of certain circuit breaker of given substation. This represents predominant SCADA system and protocols in use in the utility industry today. Each protocol consists of two message sets or pair. One set forms master protocol, containing valid statements for master station initiation or response, and the other set is RTU protocols, containing valid statements an RTU can initiate and respond to. In most but not all cases, this pairs can be considered a poll or request for information or action, and a confirming response.
CONCEPTS OF SCADA SYSTEMS

A SCADA system includes input/output signal hardware, controllers, HMI,networks, communication, database and software. It mainly comes in the branch of Instrumentation Engineering. The term SCADA usually refers to a central system that monitors and controls a complete site or a system spread out over a long distance.


The bulk of the site control is actually performed automatically by a Remote Terminal Unit or by a Programmable Logic Controller . Host control functions are almost always restricted to basic site over-ride or supervisory level capability. For example, a PLC may control the flow of cooling water through part of an industrial process, but the SCADA system may allow an operator to change the control set point for the flow, and will allow any alarm conditions such as loss of flow or high temperature to be recorded and displayed.

The feedback control loop is closed through the RTU or PLC, the SCADA systemmonitors the overall performance of that loop Data acquisition begins at the RTU or PLC level and includes meter readings and equipment statuses that are communicated to SCADA as required.Data is then compiled and formatted in such a way that a controlroom operator using the HMI can make appropriate supervisory decisions that may be required to adjust or over-ride normal RTU (PLC) control

ARCHITECTURES OF SCADA SYSTEM

SCADA systems have evolved in parallel with the growth and sophistication ofmodern computing technology. The following sections will provide a description of the following three generations of SCADA systems:
First Generation – Monolithic
Second Generation – Distributed
Third Generation – Networked

MONOLITHIC SCADA SYSTEMS

When SCADA systems were first developed, the concept of computing in general centered on “mainframe” systems. Networks were generally non-existent, and each centralized system stood alone. As a result, SCADA systems were standalone systems with virtually no connectivity to other systems.
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