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
2000. 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)
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
Level 1
Level 2
Level 3
Trạm Long Bình
Trạm Tân Hòa
Trạm Đồng Nai
Trạm cắt KCN
Trạm cắt Hóa An
Trạm hợp bộ,
Recloser và LBS
•406.125Mhz, 406.175Mhz
•409.800Mhz, 409.875Mhz
•414.225Mhz
•Dây điện thọai dùng để dự phòng
Trạm Biên Hòa
MCC
Trạm Tân Mai
Trạm cắt Tân Phong
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)
National
SCADA/EMS
Regional
SCADA/EMS
Substation
Generation
G
Substation
G
G
RTU
G
SCADA
RTU
Transmission
SCADA
Distribution
RTU
RTU
Substation
Substation
Regional
SCADA/EMS
At compact, LBS, Recloser:
functions:
Adding
RTU 232 with
-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.
Compact station
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
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
One channel UHF is used to collect data from 4
breaker station with protocol Master/Slaver
between SCADA and RTU in high voltage
station
Data is transferred in the possible shortest
time delay, about 5 seconds – even in the
emergency cases
The high voltage stations were installed
information cabin, named Marshall.
Information from Relay, and transducer were
transferred to RTU 232
Data were transformed into the proper
protocol (from RP570 to IEC 870-5-101) and
transfer to MCC through dial modem
Telecommunication system
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 60870-5-101
Telecommunication system
System VHF available can support the voice communication. So, all 4
channels can be used concluding as follow 142.65 MHz cho caùc hoaït
ñoäng ñieàu ñoä.
143.15 MHz for distribution application
143.25 MHz for maintenance application
143.45 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.
Control Center MCC
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
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.
Server AS
PC. DMS
PC. SyS 1
PC. SyS 2
PC.EW
Overview ACC
Máy in Laser A4
Sys 1
Máy tính
điều khiển
Máy tính chủ
Lýu dữ liệu
(AS)
22”
22”
Sys 2
Máy tính
điều khiển
22”
22”
22”
Đồng bộ
thời gian
Máy chiếu
22”
Máy in kim
Truyền thông
dự phòng
22”
22”
Máy tính chủ
DMS
GPS
M
SW A
LAN 1
HP Jetdirect
LAN 1
LAN 2
LAN 2
HUB
SW B
Cisco 1605R
17”
M
RAS
22”
22”
Máy tính chủ (MDW)
dïng ®Ó nghiªn cøu vµ më réng
22”
Máy tính chủ (Com
1)
thu thập dữ liệu
chính
Fall Back Switch
Máy tính chủ (Com
2)
thu thập dữ liệu
dự phòng
22”
22”
22”
Nối với Công ty Điện
lực 2
(Remote Console)
Máy tính chủ chính (EW)
để đào tạo nghiên cứu
và mở rộng hệ thống
Trạm Tân Mai
Trạm Biên Hoà
TC. Hóa An
TC. KCN
Trạm Đồng Nai
Long Bình
Tân Hoà
TC.Tân Phong
Các trạm hợp bộ,
Recloser và LBS
Designing of SCADA/DMS
Application is designed based on the software of SCADA and OPERA,
running on WINDOWS
Core software language is SCIL (Supervisory Control Implementary
Language)
- 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..
- 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)
Modulation of
Dong Nai
power line
1. Modulation
Opera ++
2. Modulation
DMS
User screen of SCADA/DMS
-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.
- 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.
XIN CHAÂN THAØNH CAÛM
ÔN YÙ KIEÁN CUÛA THAÀY
VAØ CAÙC BAÏN