Download SolarQuestÒ es una empresa que desarrolla equipo de alta

Solar
Quest

Power Management System
SolarQuest has developed a Power Management System that offers an integral view of
the electric power (currently and historically consumed) where it is installed. By strategically
placing sensors on the equipment and auxiliary outputs, the Power Management System
records electrical power consumption, every minute. If the strategic sensor nodes are
expanded to include more measuring points, this will create a more detailed power
consumption chart.
One of the major advantages of the Power Management System by SolarQuest is the
availability on the Internet of all the information collected. SolarQuest hosts the private
database for all the data collected and processed. Then, the authorized database owners may
request any portion of their data, using a web browser. This means that data is accessible
world-wide via the Internet to authorized users. Furthermore, we permit user control over the
scaling factors of the sensors placed in the field. This will diminish the level of specialization for
the technician in charge of installing the data acquisition equipment in the field, simplifying
installation of the system. The scaling factors are defined by filling out a web form and
uploading it to the database.
The data measured every minute is averaged in periods of 15 minutes. The time-stamped
15 minutes intervals are displayed on the Internet either in a table form, or as a graph.
To customize the time interval over which the user is interested in requesting data, we
offer the Graph Builder. This form allows the user to obtain a graph of the selected variables
within the time frame specified.
We have installed an experimental Power Management System in our facilities at Santa
Cruz, California. Our Power Management System has been customized to match our solar
powered, grid-backup energy system, and we have also included climate measurements. This
information advises us of how much electric power our solar panels produce, how much we
take from the grid, how much our AC loads consume, how much our DC loads consume, when,
and how often. Please check out the energy performance of our solar system in our Server
Room, where all SolarQuest servers are installed, including the one that hosts our Power
Management System database and web interface:
http://data.solarquest.com/
The next images show the most relevant information available on the Internet, for the
Power Management System installed at our facilities.
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Solar
Quest
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Electricity graphs Display
Tabular display
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Solar
Quest
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Environment graphs
Energy graphs
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Solar
Quest
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Graph Builder for authorized users
Field technician screen to configure sensors scales (password protected)
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Solar
Quest
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The following schematic shows the Photovoltaic system and Power Management System
installed in SolarQuest at Santa Cruz, California.
Photovoltaic
Array
2.5 KW
Solar Radiation
Temperature indoors/out
Wind speed/direction
Humidity
Rainfall
Photovoltaic Voltage
Photovoltaic Current
Charge
Controller
Battery Voltage
Battery Input/Output current
Battery Array
48 Vdc load current
24 Vdc load current
12 Vdc load current
DC/DC
converter
48/12 - 48/24
DC BUS
Inverter
GRID
Servers
ac load
AC BUS
SolarQuest
servers
The environmental parameters we are measuring are: solar radiation, indoor and outdoor
temperature, wind speed and direction, humidity and rainfall.
In the next page, there is a more detailed schematic of the instrumentation deployed to
record electrical and climate measurements, and its data flow.
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Solar
Quest

Equipment room
roof penetrations
Weather
station
Weather data
console
Internet
RS232
Weather data
Solarimeter
LAN
Power data
control /
logger
Power-monitoring,
Environmental database
RS232 LAN interface
module
PV power data
Consumer power data
via powerline
LAN
208 V interconnect panel
powermonitor
clamps
PV interconnect
Logging host PC
PV power output
Software Manifest
208 VAC
120 V distribution
Bulk transformer
480/208
PV power data host
Consumer power data host
Weather data host
Multi-port serial driver
FTP daemons
Housekeeping
Win OS
(0ptional remote access)
480 VAC
Utility net
meter
Instrumentation Overview
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Solar
Quest
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Data Flow Overview
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Solar
Quest
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Instrumentation System
Representative Illustrations
Power monitor data logger:
Control Plus module, including 6 available analog input channels. (Shown is the smaller
Control module.)
Power monitor transducer clamp sets: 4-20mA :: 0 – 108.2 kW
1 set per sub-meter, maximum 4 for logger module (above). Each set is wired and
clamped onto the 3 phases of the consumer branch circuit, within the panel.
(Installation
requires electrical power off and lock-out.) Control wiring is 24VDC, twisted pair (non-conduit).
Serial port -LAN interface adapter:
puts RS232/485 equipment onto the LAN.
Requires virtual port software driver installation on supervisory PC.
Shown:
8-port;
recommended: 1 - 2 ports.
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Solar
Quest
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Solarimeter, with tilt bracket, for rooftop solar-panel plane mounting.
Recommended for input channels 1-2; range: 0 - 1500 Watts/m2
Weather station: equipment-room, and rooftop temperatures, plus wind, rain, barometric
pressure. (Also shown with optional solar radiation and UV sensors, recommended for site
assessment-only installations.)
Wall-mount industrial computer: for installation in customer equipment room.
Optionally replaces both LAN adapter, above, and customer-supplied computer system.
If
required, specify extended temperature range operation.
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Solar
Quest
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Configurable Solar-Powered Energy System
DC/AC rack: 1 - 6 KW
Photo-Voltaic array
400 W - 12 KW ( 8 - 250A)
AC
120VAC
LVD
Sensor
Transducer
signal
AC bank
breaker
DC/DC rack: 1 - 6 KW
DC bank
breaker
Array protection junction box
DC
48VDC
DC current
DC
24VDC
LVD
Frame Ground
DC current
DC
12VDC
DC current
Battery bank
breaker
Transducer
signal
Charge Controller rack
PV Array
breaker
Transducer
Signal
Charge controller
Batteries 5 - 50 KWHrs
LVD
HVD
TC
Sensor
TC
temperature
compensation
DC return
Circuit Breaker
High Voltage
Disconnect
HVD
Low Voltage
Disconnect
LVD
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