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SYNPOL®D is a compact devise used for the control
and protection of generators and deisel engines. In addition, SYNPOL®D
is equipped with a power management system that includes automatic
connection to big consumers for controlling the entire mains systems
of marine or land-based power stations. Because of its modular structure,
the system is not influenced by any central control unit. Since a
SYNPOL®D control device is assigned to each generator
panel, all generator panels are identically constructed. A two-wire
bus communication (CAN-Bus) connects the SYNPOL®D
control devices to each other. In case of failure of one device, the
others will continue operating. Each SYNPOL®D device
incorporates all important functions necessary for power management.
Thus, the system of independent and autonomous electric diesel engines
has been consistently developed for switching gears, control and monitoring
(modular independent systems.) Optionally, a PC-monitor system can
be connected if CAN communication is in use.
A SYNPOL®D device is mounted on the front of the
door of each generator panel. The control panel of the SYNPOL®D
device itself contains elements for displaying all of a generator’s
important values. These values, permanently indicated on the green
seven-segment LED displays, are:
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Generator voltage,
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Generator current,
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Generator power,
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Generator frequency,
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Generator power factor.
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In addition to the seven-segment displays, a generator’s
current and power are shown by analog indication with continuous green
light bands that turn red after passing the 100% mark.
There is a large LCD display on the SYNPOL®D
control panel, which provides the following information:
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Diesel engine status
display,
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Measuring data of generator,
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Display of incoming alarms in case
of exceeding value limits,
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Status display of total plant when
power management operation is in use,
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Display of parameters and limits
for input when the programming mode is selected,
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Status display of internal computers.
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All values can be entered via a keyboard on the SYNPOL®D
control panel. Some of the keys are also used for operating the diesel
engine, so there is no need for a separate programming device. The
key "Acknowl" serves for acknowledgment and resets stored
alarms.
Two red LEDs for "Alarm" and "Tripped" are located
on the SYNPOL®D control panel. In case a limit is
surpassed triggering an alarm, the LED "Alarm" will blink.
After the alarm time has run down, the LED "Alarm" will
turn to a steady light and remain on until the triggering value falls
below the limit value and the key "Acknowl" is pressed.
If a limit triggering the generator breaker is surpassed, the LED
"Tripped" will blink. After the end of the delay time, the
LED "Tripped" will turn to a steady light and remain on
until the triggering value falls below the limit value and the key
"Acknowl" is pressed.
The SYNPOL®D is controlled by means of several microcontrollers
that monitor each other. Important functions are laid out in a double-redundancy
combination, with the second channel operating independently and without
a processor.
The short-circuit protection operates parallel to the microcontroller
and does so even if the entire supply voltage fails.
The SYNPOL®D device has several connectors installed
on its back that link it to the terminal boards. These terminal boards
are mounted in the generator panel of the switchboard and are connected
to the control unit via terminal blocks. The cables connecting the
terminal boards to the control unit are shielded on both sides.
The following terminal boards can be connected:
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1.
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Terminal board CMA 131 – Generator
connection
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2.
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Terminal board CMA 132 – Generator
relay
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3.
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Terminal board CMA 133 – Differential
protection and earth-fault monitoring
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4.
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Terminal board CMA 134 – Resistor
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Terminal board CMA 135 – Diesel
start, stop, control and monitoring
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6.
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Terminal board CMA 136 – Communication
control
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7.
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Terminal board CMA 137 – Additional
functions
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8.
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Terminal board CMA 138 – Special
types of control
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Short-circuit protection
that remains effective even if the entire supply voltage of
the device should fail. Selective disconnection of a faulted
generator. Reconnection protection by manual resetting.
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Three-step overload protection by
over-current recording.
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Reverse power protection.
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Three-step disconnection of non-essential
power consuming components in case of overload, under frequency
and over current.
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Synchronization of the alternator
to the busbar.
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Automatic speed adaptation of the
diesel engine to the busbar frequency.
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Under and over-voltage monitoring.
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Under and over-frequency monitoring.
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Open circuit monitoring of the current
transformer circuits.
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Asymmetrical current protection.
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Asymmetrical voltage protection.
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Self monitoring of supply voltages
and of program operation via Watch-Dog function.
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Active power measuring, including
non-sine voltages and currents and especially thyristor loads
(output signal ±10 V/DC or ±20mA/DC intended for
moving coil instrument connection).
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Reactive-power measuring.
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Apparent-power measuring.
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Current output 4 – 20 mA for
remote control display.
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Permanent storage and indication
of all release functions.
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Supply for the under-voltage coil
(direct current), supporting the supply in case of short-time
voltage drop.
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Differential protection with current-adaptive
tripping characteristic and minimum-differential monitoring
in case generator is operating at no load.
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Earth-fault monitoring, including
phase recognition and minimum-differential monitoring, in case
a generator is operating at no load.
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Counter for the following data: working
hour, kWh (dual counter), kvar, start, and main breaker.
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Active-load regulation
with secondary frequency regulation, twice controlling several
mains (in case tie circuit breakers are used).
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Power factor in combination with
voltage control in several networks.
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Load-free disconnection of the alternator
circuit breaker.
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Asymmetrical load regulation, with
constant load set point (for example, shaft generators).
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Asymmetrical power factor control
with constant set point (for example, land stations).
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Start, stop and preglow outputs rated
for 24 V/40 A.
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Galvanic separation of I/O’s
by optocouplers.
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Galvanic separation of 24 V supply
to the engine.
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External connections on a separate
terminal board.
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Individual programming for each unit
by initialization routine.
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Actual speed measuring either by
tachogenerator or by pick-ups, including monitoring.
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Eight programmable wire fault alarm
inputs that permit free determination of logic, delay and alarm
text displays.
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Wire break monitoring
of start/stop solenids.
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Serial interface between several
SYNPOL®D units, as well as interface for data transmission
and control of external plants (RS 485, RS 422, RS 232).
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Parameter setting via
lap top.
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Menu-operated input of all limit
values and parameters.
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Power management with
multi-master system.
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For landstations: rapid-phase-jump
relay, fast voltage and frequency detector.
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For more information about SYNPOL®D, please email
us at mail@stuckegmbh.de
or call +49(0)40-227-468-0.
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