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Abdullah Nadar TUBITAK-BILTEN Ankara/TURKEY

A Specific application of SCADA (Supervisory Control And Data Acquisition): Feeder Automation System for Medium Voltage Distribution Networks of Istanbul. Abdullah Nadar TUBITAK-BILTEN Ankara/TURKEY. TUBITAK-BILTEN. TUBITAK : The Scientific and Technical Research Council of Turkey.

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Abdullah Nadar TUBITAK-BILTEN Ankara/TURKEY

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  1. A Specific application of SCADA (Supervisory Control And Data Acquisition):Feeder Automation System for Medium Voltage Distribution Networks of Istanbul Abdullah Nadar TUBITAK-BILTEN Ankara/TURKEY

  2. TUBITAK-BILTEN TUBITAK : The Scientific and Technical Research Council of Turkey BILTEN : Information Technologies and Electronics Research Institute

  3. TUBITAK-BILTEN It was founded in 1985 works on numerous national projects funded by industry and the public sector as well as many international joint research projects in the fields of information technologies and electronics. The organization consists of 12 different research groups and 210 personnel. 120 personnel are highly qualified full-time engineers.

  4. TUBITAK-BILTEN12 Project Groups • Applied Software Development Group • Communication Systems Group • Electronic System Design Group • Information Society Policies, E-Commerce and Inf.Security Group • Intelligent Energy Conversation Group • Internet and Multimedia Technologies Group • Organization, Information and Project Monitoring Group • Power Electronics Group • Hardware Development & Power System Group • Satellite Technologies Group • Signal Processing and Remote Sensing Group • VLSI Design Group

  5. TUBITAK-BILTEN Hardware Development and Power Systems Group • SCADA (Supervisory Control and Data Acquisition) Main Projects: • MV Electricity Distribution Master Plan of Istanbul City • Fider Otomation Project for Istanbul Electricity Distribution • Power Systems Capability: • To perform the analysis of electricity generation, transmission and distribution systems. • To use PSS/E “Power System Simulator for Engineers”, ATP “Alternative Transient Program”, EMTP “Electro Magnetic Transient Program”

  6. TUBITAK-BILTEN Hardware Development and Power Systems Group • Some Projects of Power Systems • Sub-Synchronous Resonance (SSR) Analysis for Adapazari-Gebze NGCC (1999) and Iskenderun Power Plants (2001) • Feasibility and Evaluation Study of Electricity Interconnection of Turkey with Balkan Pool and UCTE (2000) and Primer Frequency Control Performance Tests and Network Frequency Analysis (2003) • High Power Transmision Lines Over Voltage Swiching Analysis for Turkey-Georgia (2004) • Performance Tests and Network Frequency analysis of Power Plants (2004)

  7. Feeder Automation System The specific application of SCADA for European side of Istanbul Mid-Voltage (MV) Distribution Network

  8. Why did we need “Feeder Automation System”? The utility decide to only 34.5 kV MV distribution instead of the two Mid-Voltage levels, 34.5 kV and 10.5 kV, which are used in Istanbul’s distribution network tobe purified due to the losses of two times transformation, difficulties in operation, and increase in costs.

  9. Why did we need “Feeder Automation System”? • The 34.5 kV MV distribution able to serve three times more power for the same crossectional area of 10.5 kV underground cable. • Easily operated ring system • But, there was a disadvantages as; Three times more subscribers are effected if a fault occurs.

  10. Why did we need “Feeder Automation System”? Solution: “Feeder Automation System”

  11. Feeder Automation • System Components can be classified into threegroups: • 1.Data Collection • 2.Remote Control • 3. Fault Identification and De-energization

  12. Data Collection • Collects Data and Digitizes • Transmits Data via Fiber Optic Cables • Regional Control Center Gets the Data

  13. RTU Types • DTTU: (Distribution Transformer Terminal Unit) used in Distribution Stations. • LETU: (Line End Terminal Unit) used in Switching Stations. • STU: (Substation Terminal Unit)Substation’s remote terminal units. • CCTU: (Control Centre Terminal Unit) used in Control Centre.

  14. Network Architecture CCTU CCTU Loop Work Station Control Center STU STU STU Loop STU Loop LETU LETU LETU LETU LETU DTTU DTTU LETU DTTU DTTU DTTU DTTU DTTU

  15. Data Collection • Distribution Transformer • LV Fuse On/Off Position • Loadbreak Switch On/Off Position • Buckholz Relay • Thermometer Relay • Thermic Relay

  16. A Sample Distribution Transformer Centre

  17. Remote Control

  18. Remote Control • Distribution Transformers • Loadbreak Switches • 154/34.5 kV Substations • Circuit Breakers

  19. Communication Network Structure

  20. Automatic Fault Detection and Isolation • Fault on feeder or distribution transformer • Is detected, • Exact position is found, • Position of fault is isolated automatically by open and close actions • Position of fault and isolation actions are sent to control centre in order to be followed by operators.

  21. Automatic Fault Detection and Isolation • Due to wish of operator the non-energised feeders are energised again; • Completely automatic • semi-automatic(some part by system, the other by operator • completely by the operator (manually)

  22. 154/34.5 kV DTTU DTTU DTTU LETU DTTU DTTU DTTU Fiber Optic Cable DTTU DTTU 154/34.5 kV DTTU LETU Automatic Fault Detection and Isolation

  23. Automatic Fault Detection and Isolation CB 154/34.5 kV 34.5/0.4 kV 154/34.5 kV CB

  24. Automatic Fault Detection and Isolation CB 154/34.5 kV 34.5/0.4 kV 154/34.5 kV CB

  25. Automatic Fault Detection and Isolation CB 154/34.5 kV 34.5/0.4 kV 154/34.5 kV CB

  26. Automatic Fault Detection and Isolation CB 154/34.5 kV 34.5/0.4 kV 154/34.5 kV CB

  27. Automatic Fault Detection and Isolation CB 154/34.5 kV 34.5/0.4 kV 154/34.5 kV CB

  28. Alternative Communication Types For DAS • Some examples of communication methods for a distribution automation system; • Power line carrier(PLC) • Telephone lines • GSM lines • Communication by radio frequency • Fiber optic cables • Since Fiber optic cable and power cable installation made together, the fiber optic was chosen for the communication system.

  29. Other Choosing Reasons • Do not suffer from the electromagnetic env.s. • Supplies wide bandwidth. • Do not suffer from lightning. • No need for licence. • No cross talk problem. • Minimised dimensions • No danger of fire when short circuited.

  30. Remote Control using select-before-operate, Remote Control using direct-operate, Automatic fault isolation within at most 1 minute time interval, Regional Control CentreRequirements

  31. Regional Control CentreRequirements • Monitoring of fault locations in the Control Centre, • Monitoring of any change-of-status events by the Control Centre.

  32. Regional Control CentreResponsibilities • Records the events with time occurrence, • Interacts with other computer networks, • Runs programs as Energy Management System (EMS) and Distribution Management System (DMS).

  33. Regional Control Centre

  34. Regional Control CentreOperator • Control Centres are controlled by the experienced operators, • Should know the Distribution System as a whole, • Should know the Control Centre Software, • Regional Control Centre is a Man Machine Interface between the operators and the Distribution System.

  35. Regional Control CentreSummary • Regional Control Centre is a place in which all data is : • collected; • recorded; • edited; • analysed; • and displayed • by control of operators.

  36. Regional Control CentreMMI • Feeder Diagrams

  37. Regional Control CentreMMI • Inside of a substation

  38. Regional Control CentreMMI

  39. The Application • By considering that this system is an feeder automation system, it is the first and only. • The time taken to find the place of a fault is not more than 40 sec. • The system is in usage at Istanbul Levent, Yeni Bosna and Sagmalcilar Regional distribution networks. • Now system running on about 400 trasformer centers totally at Istanbul.

  40. The Application

  41. The Application– Levent RCC

  42. The Application– Y.Bosna RCC

  43. The Application– Sagmalcilar RCC

  44. To control the consumption of the electric energy and to handle effective usage of the energy. Quick and easy fault detection, isolation and energising again. Automatic or operator controlled isolation. Remote control ability with open/close function for the operator at control center. Results

  45. When completed, this system is going to provide to the utility the following benefits: Improved customer service and system reliability through reduction in duration of power-off, Reduced manual sectionalizing expenses in system switching operations, Improved utilization of available substation transformer and distribution line capacity, Improved circuit, deciding for better planning, design and operations. Conclusions

  46. Thanks for your attention ...

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