English (1.2 Mo)

S U B S T A T I O N S
Protection relay with
full PLC function
SEPCOS-NG is a high-tech equipment that satisfies the most demanding safety requirements applicable to DC electrical
power transmission networks.
SEPCOS-NG is a powerful electronic system based on several microprocessors. It is used as a protection and control unit
of an outgoing feeder cubicle or rectifier unit in DC traction SUBSTATION of public transport systems such as streetcars,
underground railway, commuter trains or trolley buses.
SEPCOS-PRO, integrated into SEPCOS-NG, development is based on the safety requirement of the railway standards EN
50126 / EN 50128 and EN 50129.
SEPCOS-NG is stand alone, modular, extending and easily adaptable by software. Moreover, it is widely opened to
modern communication equipment. It delivers network communication or serial line monitoring facilities.
Sécheron is the precursor and leader in the field of IEC 61850 adapted for DC applications and has already successfully commissioned several projects using this standard.
Main Features
• Modular PLC concept, up to 54 Digital input and 30 Digital output possible
• 5,6'' Grafic display with "touchscreen" function
• Fully Approved in railways substation environment EN50255-22
• Very good noise immunity thanks to a high sampling rate (25 microsecond) for each of the 4 analog inputs
• Wide communication possibilities
• Control functions :
FI WD
5
T
PLC programming, IEC61131-3 normalised programming.
4
4
Application is customised depending of the substation layout and customer mode of functioning.
3
2
3
2
1
1
PWR
RUN
-
HSCB ON / OFF control with electric or magnetic holding
Intertripping
Automatic reclosing
Anti-pumping
Line Test function
External synchronisation of the PLC (NTP)
Measurement supervisor control
• A useful LED indicator helps to control each input/output status.
2
• Double settings: 2 sets of parameters can be memorized on the SEPCOS-NG. In case of failure of
a substation, settings of adjacents substations are adapted to the new characteristics of the line.
Bus connections
Open to all customers Network and protocols
Modularity and adaptability are the key words of the SEPCOS-NG. We developed this protection and command relay with
the objective to get it as adaptable of the customer's needs as possible, and we did that successfully: the SEPCOS-NG
is indeed open to all customers Network and protocols:
• Power distribution protocols: IEC60870-5-104 (-5-101), DNP3.0, IEC61850
• TCP/IP: MODBUS-TCP
• Fieldbus: MODBUS-RTU
• Flexibility in connectivity: Copper cable (RS485, RJ45) or optical fiber.
SEPCOS-NG can be also adapted to your specific needs.
Example of configuration with IEC61850
Configuration, network protocol and connection to the higher supervision system (SCADA) tailored for each network request.
Example of SEPCOS-NG
installed on a cubicle with
Optical Fiber connection.
3
Applications
With many command and protection functions, SEPCOS-NG satisfies the needs of DC electric traction networks such as
outgoing feeder cubicle or rectifier unit.
SEPCOS-NG is used for monitoring traction network segments and for logging events.
It analyzes the current gradient and voltages through cyclic measurements at the supply point of the substation to the
catenary.
The measurements are made via electrically isolated transducer (for example the isolated amplifiers type MIU 10 or VM10
developed by Sécheron).
Typical application of the SEPCOS-NG :
Touch Screen Display
Control & monitoring
SCADA
x
x
Communication
Bus
x
High Speed
Circuit Breaker
Current
(shunt or Hall sensor)
Measuring amplifier
MIU10
Voltage
Measuring amplifier
VM10
+
RS232
USB
TCP/IP
–
SEPCOS I
User software
4
Protection
di/dt Curve
PROTECTION Main Features
Last Detection
di/dt (kA/s)
2009/08/29 11:50:36.984
673
• Last 3 curves of detection memorised:
}
- di/dt
- current
2500 points each
- voltage
- HSCB input/output status memorisation
• Curve memorised pitch : 100 µs...5 s
-70
0
50
T (ms)
I
di/dt
U
• Sampling Rate : ~ 25 µs
PROTECTION Functions
• DDL + Delta I
• DDL + Delta T
• DDL - Delta I
• DDL - Delta T
• Imax +
• Imax ++ with a second level
• Imax • I max -- with a second level
• Thermic Feeder (calculated, based on current)
• Backup Current (2nd measurement & survey)
• Cable insulation fault detection
• U feeder Low
• U feeder High
• Track Alive
• Delta U
• Interrupted Arc
• Charge Report
• Falling Voltage
• Storage of the last 3 events: Total 9 curves
• Availability of the last 1000 events; 1ms time-stamped
Current Curve
Last Detection
I (A)
2009/08/29 11:50:36.984
4009
Voltage Curve
Last Detection
U (V)
-462
0
50
T (ms)
I
di/dt
2009/08/29 11:50:36.984
1000
U
-8
0
50
T (ms)
I
di/dt
U
You can parameterize the individual protective functions of the unit and deactivate protective functions that you do not need.
Description of Di/Dt functions
DDL + Delta T
If the value of the Delta t measured is higher than the
parameter Tmax and the value of Delta I measured is higher than the parameter Delta Imin, the function declares a
detection by DDL + Delta T and a tripping is initiated.
i
Trip
Delta Imax
DDL Delta I
i(t)
If the current rise Delta I measured is higher than the
parameter Delta Imax during a time higher or equal to the
parameter t Delta Imax, the function declares a detection
by DDL + Delta I and a tripping is initiated.
F
X
DDL + Delta I
DDL + Delta T detection
Tmax
i
Delta Imin
Trip
Tmax
DDL Delta T
i(t)
Delta Imin
F
t
X
E
DDL + Delta I detection
Delta Imax
t Delta Imax
Delta Imax
E
t
5
Graphic display and user interface
8 multipurpose LED
Status LED
The display module is a simple,
modular and user-friendly monitoring tool that collects the information
available from the SEPCOS.
It is including the modification of the
SEPCOS parameters (Setting protections, Command parameters,
etc.).
It's based on a resistive touch
screen LCD display 1/4 VGA
(320x240 pixel).
It is also equipped with 8 Led with
dynamic labels for the visualization
of state of the PLC (Position, Type of
fault, …)
¼ VGA touch screen
graphic display
Control orders
Trolley
Service
Protection parameters
Event list
Local
750 V
HSCB
1/73
Event List: Protection
09/09/16
21:25:07.875
ON
Trolley D D L + D e l t a I 750 V
DDL + Delta I
Service Ana log V a lue s
8: Detection
Imax -
D D L + DS
e tl taat eT : A c t i v e
Mode:
On without LT
09/09/16
21:25:05.625
RESET
OFF
0A
... .....................
................................
...........
.................
... .....................
................................
...........
.................
i
D D L - D eSlttaat iTs t i c : N o n e
0A
E : 55 kA/s
Charge Report
Imax +
F : 15 kA/s
D ePlrote
t a Icmtion
ax : 500 ms
Com m a nd
t Delta Imax : 1 ms
G e ne ra l P a ra m
0V
... .....................
................................
0V
i
Loading ...
Control of the equipment (orders IN,
OUT, RESET etc.).
Mode:
t i toant e:a TIr a n s i s t o r
D D L - D eAlct S
103: HSCB ON & OFF pos. Error
Ids or Ext. Override Detected
...........
.................
Local
Reading and modification of protection parameters, such as DDL Delta I.
The events lists (last 1000 events)
stored by the SEPCOS-NG can be
displayed, including the last 150 protection events.
Visualisation
Trolley
Local
750
U V
R ect if ier ( V) : 750
Service A n al o g Valu es
V er si on s
U F eed er ( V) :
750
D at e an d T ime I F eed er ( A ) :
N et w ork ID
P assw o rd
0A
L an g uag e
T est L E D s
S t at es I/O
Aux (-):
θ If ( %) :
SA N A 1 ( - ) :
SA N A 2 ( - ) :
kW h :
1250
0
750
0
Local
Input
Trolley
750 V
Mode: Ana log V a lue s
Service
I1
Versions
Date and Time
Français
Password
0A
Language
Deutsch
Shows the analogical values of the
voltage and the Current, the consumption and the impedance of the
line.
O2
O3
I4
O4
I5
O5
P a s s w ord
0 A I6
La ngua ge
O6
Ne t w ork ID
Cont ra s t
0V
i
Boa rd n° 2
S t a t e s I/O
Brightness
Mode:
Boa rd n° 1
Te s t LE Ds
Contrast
Local
O1
I2
Türkçe
St a tes I/O
0V
V e rs ions
Output
Da t e a nd TimIe3
English
Network ID
Test LEDs
B r i g h t ness
6
Trolley
750 V
Analog Values
Service
Mode:
0
1250
C o n t r ast
i
Multilanguage Display. Can be
adapted on request
Bright ne s s
i
0V
State of each Inputs and Outputs.
Optional functions
• Cable insulation fault detection
In DC traction application, power cables built with metal shields must be protected against high touch voltage. This protection must be active when a dangerous contact voltage or a high current appear on the shield in case of insulation fault.
The system is designed to detect a leak current either between shield and conductor or between shield and earth. If a
fault occurs, actuation of intertripping out signal can be selected. The settings for this function can be adjusted with the
SEPCOS-I software.
• Power and energy
This function calculates the energy transported by the feeder.
The value can be reset to zero or adjusted through its parameter.
Permanent monitoring of the voltage of the circuit breaker (Ul) and of the line current (Ul).
SEPCOS-I : Control and parametrization software
The software SEPCOS-I is the interface PC program to
configure and read the SEPCOS data.
This software allows in particular to:
• Modify the protection parameters and the command
parameters of the cubicle.
• Transfer on a PC the information recorded by the SEPCOS
• Download on a SEPCOS the information (parameters)
recorded in a PC
• Show at real time the analogical inputs value and detection
result.
Approvals
• EMC testing according to IEC 60255-26
• Voltage and Insulation Withstand tests
according to IEC 60255-5
• Development following the EN50126,
EN50128 & EN50129 standard.
• Conform to IEC 61131-3 PLC standard
programming
• Environmental testing
-
Cold storage test and Cooling test according to IEC 60068-2-1
Hot storage test and dry heat test according to IEC 60068-2-2
Damp heat test according to IEC 60068-2-30
Salt mist according to IEC 60068-2-52
Altitude 3000m (=700mbar) according to RTCA D0160F section 4
• Vibrations, shock and bump test
-
Vibrations test according to IEC 60255-21-1
Shock test according IEC 60255-21-2
Bump test according IEC 60255-21-3
Seismic tests according to IEC60980
7
Technical specifications
Mechanical format
A big advantage of the SEPCOS-NG is its modularity:
• The position concerning the PC/104 fastenings and the connectors for the board complies with
the PC/104 specification.
• The boards are integrated in modules to make up an element of the SEPCOS-NG.
• All electrical connections are located on the front panel of the housing:
• The weight of one module is in average of approx. 270 g
From 231.5
to 332.6
6.7
112
11
Environment
Connections
The environment must comply with the following conditions:
•
•
•
•
Storage temperature : -40°C / +85°C
Operating temperature : -25°C / +70°C
Humidity : Relative humidity 10% / 95%
Altitude : < 3000 m (700mbar)
All connections (power supply, analog signals, RS232,
network, etc.) are placed on the front panel.
Power supply
The SEPCOS-NG is powered by a modular power
unit, choose according to the input voltage.
SG815135BEN_D00-08.10
Power supply:
• 24 - 48 V DC
• 60 - 125 V DC
• 220 V DC.
Sécheron SA
Rue du Pré-Bouvier 25
1217 Meyrin - Geneva
CH-Switzerland
Tel: +41 22 739 41 11
Fax: +41 22 739 48 11
[email protected]
www.secheron.com
This document is not contractual and contains information corresponding to the level of technology at the date of printing. Sécheron reserves the right to modify and/or improve
the product, whose characteristics are described in these documents, as required by new technology at any time. It is the purchaser's responsibility to inform himself, no matter
what the circumstances, of the product's maintenance conditions and requirements. Sécheron reserves all rights, especially those arising from our "General Delivery Conditions".
Copyright© 2007 Sécheron SA