Transcript 4f8f068bcb4681.64061636x

EHT
INTERNATIONAL
iMCC
Intelligent Motorized Control Cabinet
Innovative control for disconnect switches
iCOD
Control
EHT
INTERNATIONAL
Main Substation Components
Transformers
These devices step up or
step down the incoming
voltage of the substation.
They are the most costly
components of the
transmission and distribution
network.
Circuit Breakers
These devices protect the
network from overloads.
They also protect against
lightning strikes. They are
used to cut power to the
network.
Disconnects
These devices ensure a
visible break in an
electric circuit and
isolate equipment within
the substation for
maintenance.
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What is iMCC?
Controls:

Complete operation of the Disconnect
Monitors:

All components of the Disconnect
Alarms:

Warns of incipient faults
Mechanically conforms:

Can be used with ALL disconnect designs
Replaces conventional controllers with the Smart Grid in mind
iCOD
Control
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INTERNATIONAL
Control

Intelligent operation of Disconnects

Real time status of switch operation

Real time status of arm location during operation

Optimal contact pressure

Full motor control allowing variable speed to reduce
arc time

Interphase synchronization

Multi-trial mode
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Monitor
• Operation completion (Opening and
Closing)
• Arm position via optical positioning system
• Disconnect position failure
• Motor voltage, current and torque
• Temperature and Humidity measurements
• SCADA connectivity
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Alarm
Alarms are recorded in a nonvolatile memory and transmitted
via the communication port or by
the dry contact relays.
Code
0
1
2
4
5
6
7
8
An LED will illuminate locally and
the alarm code will be displayed on
the iCOD panel if an alarm is
present.
Alarm levels:
Level
I : Maintenance required in
the medium term
Level
II : Immediate maintenance
is required the disconnect is not
functional.
9
12
13
14
17
25
26
27
28
29
30
31
Description
No Error
Enclosure maximum temperature surpassed
Motor overvoltage
No rotation of positioning shaft, encoder detects no
movement
No reading of the encoder. Encoder failure
Security switch activated, position limit attained
Local button failure (button activated for more than
60 sec)
Motor activated for more than 3 minutes; motor
stopped
Environmental sensor failure
Enclosure minimum temperature surpassed
Motor overcurrent
Encoder position out of range
Three trials performed in multi-trial mode
Other phase(s) failure - inter-phase locking(IPL) signal
activated
Mechanical link failure of disconnect
Blade of disconnect fallen outside of jaw
Main contact of disconnect jammed outside of jaw
Main contact of disconnect jammed inside jaw
Encoder failure
Positioning shaft failure
Level
0
I
I
I
I
I
I
II
I
I
II
II
I
II
II
I
II
II
II
II
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Mechanical
• Designed for 50 years
operational use with little or no
maintenance.
• Will work with any disconnect
design.
• Over rated motor and gears
for years of trouble free use.
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Operation and Diagnosis
The controller knows the position of the arm at
all times.
It can detect a break or blockage of live parts or
gears.
Cams are NOT used to determine arm position,
a combination of torque and position is used to
determine the actual position of the arm
throughout entire operation.
Arm wedged in corona ring
The optical positioning system has a precision
of 1/5 of a degree, thus providing great
flexibility for data analysis by function of the
position.
Arm fallen outside of
corona ring
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Elimination of Auxiliary Cam Switches
The optical positioning system, OPS,
provides an accuracy in the DS arm
position measurement that is
impossible with traditional methods.
Positions are now assigned within
the software.
Once the positions are established
the configuration file can be copied
to other iCODs operating DS of the
same design.
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Elimination of Auxiliary Cam Switches
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De-Icing
During icing conditions the disconnect
will attempt three time to break the ice.
A built in delay allows time for the
operator to get out of the way.
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Arc Reduction
Increased lifespan of disconnect
switches and adjacent
equipment due to reduced
arcing time (50% or more)
Reduced harmonics injected into
equipment and grid.
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DSV : Avantages of variable speed control
A strategic solution for control and monitoring

Reduction of harmonics by 50% or more per manoeuvres .

Reduction of exposure of harmonics to transformers .

Reduction of exposure to arcs on contact fingers therefore
reduced pitting of contacts.

Increased contact pressure on pantograph and semi
pantograph designs.

Minimized motor stress due to fluid motor acceleration and
deceleration.

An active system for the measurement and control of
motor current, cycle by cycle, for optimal motor protection.
Motor will never burn out as current is constantly being
measured thus preventing overcurrent conditions.
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DSV : Avantages of variable speed control
 Direct link between arc time and energy dissipated
 Reduced arc time, reduced harmonics dissipated.
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Maintenance Free Design
 Solid state design, no moving cams or micro
switches.
 No degradation due to poor contacts from
oxidation.
 Elevated resistance to vibration.
 Motor current monitoring to increase motor life
and other components.
 Very low control operating current versus the
activation of a relay coil.
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Maintenance Free Design
 Control panel membrane prevents dust and pollution from
affecting the contacts.
 Military grade robust, proven and isolated.
 Contact switch life more than one million operations.
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Maintenance Free Design
Front panel and terminals – zero
maintenance.
Connections for SCADA easily
accessible.
No Cams to become lose over time
Configuration file can be copied to
other iCODs
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Optional Maintenance Free Design - Terminals
 Vibration tests conducted IEC60068-2-6 at a frequency of 2000Hz
with an acceleration of 20G. Specially designed for the railways.
 Excellent contact over life of equipment tightening not
required.
 Used at many utilities including Hydro One and Hydro
Quebec.
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Standards and Approvals
Testing conclusions by Hydro-Québec
 Reliability observed for the duration of
the tests.
 Decrease adverse effects caused by the
operation of the disconnect.
 Immunity to EMI / RFI
Testing Standard IEC 62271-102
All specifications of the standard
have been successfully completed;
Compliant with purchasing and HQ
SN62.1008 SN.19.3
Hydro Quebec Certification In Progress
Testing in the laboratories of EHT
 10 000 operations over a period of one
month
 1000 maneuvers continuously
 Operations at high temperature
 Continuous operation at 70 ° C
All PCBs are treated with a
conformal coating
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Tests with Hydro Quebec
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Reduced Losses
 With an accuracy (0.1%) of the
positioning system for the power
contacts results in a significant
reduction in losses through the bad
positioning of primary contacts.
Système de régulation avec thermostat au mercure
sans dissipateur de chaleur
 Environmental control system
(control of heat and humidity)
optimized with 20% to 30% energy
saving.
Température
(T)
T0
ΔT3
Consigne
T1
T_initiale
t1
t0
Δt1
Temps (t)
Système de régulation avec sondes électronique
et dissipateur de chaleur
Température
(T)
T0
ΔT4
Consigne
T1
T_initiale
t0
Δt2
t1
Temps (t)
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Software Interface
Monitoring panel
Operation graph
Operation description
Analysis panel
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Field Installation
Upgrading an existing Hydro
Quebec cabinet with…..
iCOD
Control
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INTERNATIONAL
ICOD Intelligent Disconnect Controller
 Real time monitor of the entire operation of the disconnect
 No maintenance required – solid state design
 Predictive maintenance tool
 Multi-Trial mode
 Ensures optimal contact pressure
 Fully tested with Hydro Quebec
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INTERNATIONAL
Thank You
EHT International
www.ehtinternational.com
+450-906-0705