Analysis and Design of a Modern SCADA System
10.4dB/ 0.4dB/km =26 kilometers ............................................ ( 3 - 10) 5.9dB/ 0.4dB/km =14.75 kilometers ....... ...
18.4dB/ 0.3dB/km =61.3 kilometers .................................................. ( 3 - 20) Figure 3. 5 illustrates the desig ...
7 TheSCADASystem SimulationModel There exista number of network simulators which can be used to analogue to network topology in ...
Table 3. 5 :Concepts of objects used in Network Model Sequence Object Name Symbol in Objects Palette Purpose 1 Ethernet workstat ...
3. 7 .2 The simulation model Size................................... The simulation model consisted of:- 1. 19 substation nodes ...
The total numbers of bits for each feeder and transformer or substation can be concluded from Table 3.6; as 49bits for each feed ...
2. Telnetservice was used to enable SCADA manager to login to any substation remotely to watch and fix errors. 3. Videostreaming ...
1. Node Statistics: Statistics collected by all the nodes in the network which clarified as Application traffic sent and receiv ...
An OPNET model analogue to network topology was built andit is shown in Figure 3. 6. Figure3. 6 :OPNET simulated network model F ...
Figure 3. 7 : FTP downloads response time(X-axis is the simulation duration in minutes) Figure 3. 8 illustrates Remote login res ...
Figure 3. 9 :Video conferencing packet End-to-End Delay, include video streeming and conference(X-axis is the simulation duratio ...
3.8 Network Availability and Reliability........................ A network must be able to meet a certain number of criteria. Th ...
Links Redundancy which depends on STP or RSTP protocols to prevent loops in Ethernet switched networks[ 76 ]. In Ethernet switch ...
3.8.3 System Network Reliability Implementation To add reliability and optimize the SCADA system network topology layout as ment ...
Figure 3. 11 :Reliability (dual links and redundant paths) added to the network. ...
9 Improving System Reliability Using a Standby WirelessMesh Network (WMN) In this thesis a standby WMN network is used as a red ...
threshold (receiver sensitivity) value. It was found that the transmitted power at 300m distance (default maximum propagation de ...
Where 푑푟푒푓is the reference distance and d is the typical distance; here d is 300 meters. To obtain the received power for differ ...
4 Performance Metrics: The performance metrics used to measure the performance of the routing protocol are: FTP Response time ...
the packets' short or long retry counts reached the MAC's short retry limit or long retry limit, respectively. 9. Wireless LAN. ...
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