LE CHI HOANG TRUNG

I. INTRODUCTION II. SCADA IN VIET NAM III. SCADA IN DONG NAI POWER COMPANY III. CONCLUSION

SCADA SYSTEM was installed in Viet Nam from Up to now, mostly province in Viet Nam has owned SCADA system. Many experts criticized the safety in operation of SCADA system in Area Centers like A0, A1, A2. Many systems after having installed can not go to operation in the reality. All of them just looked as Training System

SCADA system is used to supervise and control plans, factories, or equipments in industry such as: telecommunication, waste system, energy system, oil filtering system, transportation., etc. The system transfer data from master unit in SCADA center and some RTU - Remote Terminal Unit) or PLC - Programable Logic Controller) LE CHI HOANG TRUNG

SCADA consist of 3 levels of controlling: Level 1: controlling, supervising for respectively equipments. The most common device is protective relay and RTU Level 2: Collecting data from IEDs and save in order to serve for the data reading. Level 3: The Controlling Center of all system, where data come from Substation Server, and then is calculated, judged status of distribution system and predict for the loads in the future LE CHI HOANG TRUNG

Level 1 Level 2 Level 3 LE CHI HOANG TRUNG

Mhz, Mhz Mhz, Mhz Mhz Dây điện thọai dùng để dự ph òng Trạm Đồng Nai Trạm Biên Hòa Trạm cắt Hóa An MCC Trạm Tân Mai Trạm cắt KCN Trạm Tân Hòa Trạm hợp bộ, Recloser và LBS Trạm cắt Tân Phong Trạm Long Bình Number of node using in controlling and supervising: MCC and 48 positions (05 medium voltage stations), 03 breaker stations, 20 compacts, 10 Recloser and 10 LBS)

LE CHI HOANG TRUNG

At compact, LBS, Recloser: Adding RTU 232 with functions: -Receiving and processing command form MSC, transferring these commands to equipments - Being processed and transferring status signals, measurement signal from equipments to MSC. - Managing information system between MSC and RTU. - Saving events of faults of not linking between MSC and RTU and transferring these data to MSC. LE CHI HOANG TRUNG

Compact station LE CHI HOANG TRUNG Some compacts are chosen to be the separated nodes between lines Here, some power poles 20m were installed with antenna CA400Y At the low-voltage room, installing one Transducer TRIAD to collect current, pressure, and active power signal Signals were transfer to RTU 211 to transform into wireless signals. And then, these signal will be transferred to antenna to go to Control Center.

LBS, Recloser: Using power poles to install antenna CA400Y Installing more DLUs to collect current, voltage signal. DLUs will supply these signals to Control Center (MCC) Data were transfer to MCC through Telemodem 32/485 LE CHI HOANG TRUNG

At the station 110/ 220KV: The current stations were installed more devices such as: - Radiator VHF with 4 chanels - Transmission line PSTN. - Information tower - RTU 560 LE CHI HOANG TRUNG

Data is transferred in the possible shortest time delay, about 5 seconds – even in the emergency cases One channel UHF is used to collect data from 4 breaker station with protocol Master/Slaver between SCADA and RTU in high voltage station

Information from Relay, and transducer were transferred to RTU 232 The high voltage stations were installed information cabin, named Marshall. Data were transformed into the proper protocol (from RP570 to IEC ) and transfer to MCC through dial modem LE CHI HOANG TRUNG

Telecommunication system LE CHI HOANG TRUNG substation MV/LV, Recloser, LBS were controlled in remote by UHF. System UHF was configured to be suitable with the operation of SCADA. Substation will transfer data to breaker station/ high voltage station and wait for a moment to reply. To limit the data transferring, maximum 4 breaker station/ high voltage station will be collected data in a circulation by a receiver in the Control Center.

Telecommunication Line - Two respective frequencies are used to transfer and receive (dual UHF). - Protocol: using protocol IEC LE CHI HOANG TRUNG

Telecommunication system LE CHI HOANG TRUNG System VHF available can support the voice communication. So, all 4 channels can be used concluding as follow MHz cho caùc hoaït ñoäng ñieàu ñoä MHz for distribution application MHz for maintenance application MHz for maintenance application The main characteristic of current VHF is: one- way transferring. The distance between channels is 12.2/25kHz, transferred power is 40W max. Signal type: voice.

Computer for dispatchers to operate: - 2 master computer SYS1 and SYS2 with dual application (main and back-up ) were used to supervise, collect, and remote control. - 1 master computer DMS (Distribution Management System) to serve for operating the system by real map LE CHI HOANG TRUNG Control Center MCC

Caùc thieát bò phuïc vuï cho chuyeân vieân Scada : - Maùy chuû MDW (Management Development Workstation) vaø EW (Engineering Workstation) daønh rieâng ñeå phuïc vuï ñaøo taïo, môû roäng vaø nghieân cöùu. - Maùy chuû AS (Archive Server)ï: ghi nhaän, löu tröõ, taùi naïp caùc thoâng tin quùa khöù vaø khôûi taïo caùc baùo bieåu. - Maùy chuû EW phuïc vuï trao ñoåi döõ lieäu vôùi caùc trung taâm ñieàu khieån khaùc. LE CHI HOANG TRUNG

Server AS LE CHI HOANG TRUNG PC. DMS PC.EW PC. SyS 1 PC. SyS 2 Overview ACC

LUẬN VĂN TỐT NGHIỆP – SV. LEÂ CHÍ HOAØNG TRUNG Trạm Đồng Nai Long Bình Tân Hoà TC.Tân Phong Trạm Tân Mai Trạm Biên Hoà TC. Hóa An TC. KCN SW A SW B Máy in kim Cisco 1605R Máy in Laser A4 Máy tính chủ chính (EW) để đào tạo nghiên cứu và mở rộng hệ thống Máy tính chủ (Com 2) thu thập dữ liệu dự phòng Nối với Công ty Điện lực 2 (Remote Console) LAN 2 Máy tính chủ (MDW) dïng ®Ó nghiªn cøu vµ më réng GPS Truyền thông dự phòng Sys 1 Máy tính điều khiển LAN 2 22” Máy tính chủ DMS LAN 1 HP Jetdirect M Máy tính chủ Lýu dữ liệu (AS) LAN 1 22” Sys 2 Máy tính điều khiển Đồng bộ thời gian Máy chiếu 22” HUB M RAS 17” Máy tính chủ (Com 1) thu thập dữ liệu chính Fall Back Switch 22” Các trạm hợp bộ, Recloser và LBS 409,800 MHz 409,875 MHz 406,125 MHz 406,175 MHz 414,22 5 MHz

Designing of SCADA/DMS LUẬN VĂN TỐT NGHIỆP – SV. LEÂ CHÍ HOAØNG TRUNG Application is designed based on the software of SCADA and OPERA, running on WINDOWS Core software language is SCIL (Supervisory Control Implementary Language)

LUẬN VĂN TỐT NGHIỆP – SV. LEÂ CHÍ HOAØNG TRUNG - Collecting and processing data from RTU. - Calculating from data were transferred from RTU. - Supervising and controlling in remote Breaker, Recloser, LBS and Compact Station. - Creating and managing alarm clocks of faults. - Recording the event - Report : Receiving, showing the value of measurement, giving charts from these data..

LE CHI HOANG TRUNG - Report : Receiving, showing the measurement and drawing charts according the real time. - Event list : Recording and events in the past time can be reviewed by the dispatchers. - Alarm list : Recording and highlighting temporary faults or permanent faults. - Note : Creating notes on the breakers (for more information)

User screen of SCADA/DMS LE CHI HOANG TRUNG Modulatio n of Dong Nai power line 1.Modulation Opera Modulation DMS

LE CHI HOANG TRUNG -At MCC, we can not confirm weather breaker in compact station 22KV or in the high voltage station is in the operation position or out of operation position. - When the breaker is not in the ready operation position, dispatchers can control them, DMS show the change of status but no measurements were recognized. - Breaker is in the remote position, but operator can open/close it.

LUẬN VĂN TỐT NGHIỆP – SV. LEÂ CHÍ HOAØNG TRUNG - When doing the contract, Dong Nai power company didn’t require ABB to supply Sources of Scada vaø DMS. In the future, when there is any fault to SYS1 and SYS2, the system can not be used - Because Mini-Scada TP.Bieân Hoøa was designed from 1997 so that the data was transfer by UHF, the back-up is tele-line, so that the area to control and supervise is limited by 20Km from MCC.

CHAÁT LÖÔÏNG ÑIEÄN NAÊNG – TS. HOÀ NGUYEÂN NHAÄT CHÖÔNG XIN CHAÂN THAØNH CAÛM ÔN YÙ KIEÁN CUÛA THAÀY VAØ CAÙC BAÏN