Transcript
Feature: Technical Developments in 2016
Power Systems Division Tetsuo Suzuki
The Paris Agreement (an international agreement reducing the imp ac t of c lim ate c h ang e) adopted in December 2015 came into force in November of last year. This agreement marks the start of gl o b al - level c lim ate c h ang e countermeasures, and serves as a historical turning point towards a trend of all the world’s countries engaging in concrete action to deal with the increasingly serious issue of global warming. Japan is the world’s fifth greatest producer of CO 2 emissions and is promoting countermeasures to meet a high target. Our specific numerical targets are to reduce g re e n h o u s e g a s e m i s s i o n s b y 26% and 80% by 2030 and 2050 respectively compared with 2013 levels through energy saving and utilization of renewable energy. As a power supply manufacturer,
S A N YO D E N K I i s a l s o m a k i n g ongoing efforts towards achieving these goals by developing products which further promote utilization of renewable energy, high-efficiency, high-reliability power supply units, and so on. Against this backdrop, the following is a summar y of the product development and technological accomplishments of our Power Systems Division in 2016. In the PV power system field, a new standard has been established for islanding detection of 3-phase PV inverters. SANYO DENKI has developed the “SANUPS P73J” in compliance with this standard. Furthermore, after the feed -in tariff scheme was launched in 2012, there has been a rapid increase in PV system installations leading to a limit on connectable volume due
to power grid capacity restrictions. As a solution, it has become essential to have PV power systems equipped with a remote - control function to control the amount of p ower generation b ased on information from power companies. The “SANUPS PV Monitor Type C” was developed as a P V system monitoring device equipped with an output control function. In the UPS field, SANYO DENKI has developed a technology enabling the easy construction of systems using Li - ion bat teries, w hi c h a re p refe r re d ove r l e a d batteries due to their wide operating temperature range and extended backup, as well as being maintenance-free and space-saving. This paper will provide an overview of these products and technologies and summarize their features.
SANYO DENKI Technical Report No.43 May 2017
18
Feature: Technical Developments in 2016
■ Development of the “SANUPS P73J JEM1505 (new active method type)” PV inverters feature both an active
“Standard active islanding detection
method and passive method for the
scheme (a frequency feedback method
swift detection of power outages in
with step reactive power injection) of
commercial power grids. However,
three-phase PV inverters connected
a problem arise when the type
to low-voltage power d istr ibution
of act ive method d i f fer s bet ween
lines” was established as the industry
manufacturers. When a PV inverter
standard for islanding detection (active
made by one manufacturer is installed
method) of three-phase PV inverters.
in a commercial power grid where a
The “SA N UPS P 73J” was newly
PV inverter of another manufacture
developed by SANYO DENKI as a
is already installed, a power company
3-phase PV inverter that conforms
requ i res a n isla nd i ng operation
to JEM1505 (a frequency feedback
test with the other manufacturer to
met ho d w it h step reac t ive p ower
check for any interference with the
injection).
active method. This test can be timeconsuming and costly. In September 2 015, J EM1505
Details of this product are provided in the “New Products Introduction” section of this Technical Report.
■ Development of the “SANUPS PV Monitor Type C” T he “Ac t o n S p e c i a l Me a s u re s
f i n a l i z e d ; t h e r e fo r e , a m o n g t h e
region covered by Kyushu Electric from
Concerning Procurement of Electricity
functions required of an output control
April 2017.
from Renewable Energy Sources by
unit, we only developed those enabling
This product allows the sale of PV
Electricity Utilities” established by
control of PV inverters in accordance
inverters to continue in the region and
Japan’s Agency for Natural Resources
with a given output control schedule.
even sales expansion in the future.
and Energy calls for the introduction
A fter wards, in September 2 016,
It a lso ser ves to establ ish a
of PV inverters with an output control
Kyushu Electric finalized the method
fou ndat ion for when other power
function.
for obtaining output control schedules.
companies require PV inverters with
In order to perform output control,
S p e c i f i c a l l y, o u t p u t c o nt r o l
output control functions, as will be
an output control unit is neccessary
schedules would be obtained from
for obtaining output control schedules
power company servers using HTTPS
Details of this product are provided
from power company servers to control
( Hy p er t ex t Tr a n s fer P rot o c ol
in the “New Products Introduction”
the PV inverters. Therefore SANYO
Secure) by an output control u n it
section of this Technical Report.
DEN K I developed the “SA N U PS
communicating directly with the power
PV Monitor E Model” with an output
company’s server via the Internet.
control function in August 2015.
19
In response to this method being
At the time, the method for obtaining
finalized, SANYO DENKI developed
output control schedules from power
a product to support the output control
company servers had not yet been
planned for implementation within the
SANYO DENKI Technical Report No.43 May 2017
inevitable in the future.
■ Development of a Technology
for “Li-ion Battery-Compatible Small-Capacity UPS Systems”
Conventionally, SANYO DENKI had offered small-capacity UPS for
1. Development of a LIB Monitoring System
(2) Reduced device size and weight •
B y combining with an LIB, the
indoor use as backup for servers and
S A N YO D E N K I d e v e l o p e d a
new system is approximately one-
ICT equipment or in combination with
monitoring system comprised of a
qu a r ter sm a l ler a nd one -f i f t h
industrial devices. In recent years, there
battery management unit (BMU) and
lighter than a 3-hour backup system
has been an increased demand for the
gateway PWB (GW) in order to use
backup power for outdoor facilities
LIB safely. This system has increased
such as communication base stations,
safety through a mechanism which
traffic lights, planned power outages,
isolates the LI B when a n er ror is
coin-operated parking, and outdoor
detected. (Fig. 1: Illustration of system
s u r vei l l a n c e c a mer a s . A s s u m i n g
configuration)
using lead batteries. (3) Improved maintainability •
10-year maintenance free period in an environment with an average temperature of 30˚C.
•
Modularization of the battery and
outdoor usage will involve exposure
M o r e o v e r, t h i s s y s t e m c a n b e
UPS to enable replacement for
to harsh environments, requirements
connected using the external interface
increased maintainability. This
include a wide operating temperature
of a SANYO DENKI UPS, therefore
product also comes standardly
range, securing installation space, and
making it possible to easily combine
e qu ipp e d w it h a m a i ntena nc e
low maintenance. To date, UPSs have
our existing UPSs with LIB.
bypass circuit for replacing the
used lead batteries. However, they
2. Development of a Technology Enabling Outdoor Installation
battery or UPS without shutting off
have a limited operating temperature range, short runtime towards the end of
(1) Environmental durability
their life cycle, and require replacing.
•
power supply. Table 1 shows typical specifications.
T h e h o u s i n g h a s a n i n g r e s s
3. Conclusion
Moreover, to achieve extended backup,
protection rating of IP44 and is
It is pred icted that, w ith the
more batteries are needed, which in
made from stainless steel to enable
d iver s i f ic at ion of s m a l l - c apac it y
turn requires more installation space.
installation in regions prone to salt-
U PS applications and installation
damage.
env i ro n ment s , U P S w i l l ne e d t o
SANYO DENKI has developed a technology to combine small-capacity
W e a d o p t e d a s t a n d b y U P S
become even more compact and have
U P S w it h L i - ion bat ter ie s ( L I B)
topology which minimizes internal
longer runtime. To satisfy these market
which are preferred due to their wide
heat generation, allowing for a
requirements, SANYO DENKI will
sealed structure.
apply the technologies gained from this
Operating range of -20˚C to +50˚C.
development project in a new series of
•
operat i ng temperat u re ra nge a nd extended backup, as well as being maintenance-free and space-saving.
•
UPS and continue to enhance our lineup.
SANYO DENKI Technical Report No.43 May 2017
20
Feature: Technical Developments in 2016
Developed part
Battery manufacturer specified items Battery MCCB
UPS
Current sensor (CT)
Battery unit (3 LiBs in series)
Contact CT secondary side
Contact
Input MCCB
Maintenance MCCB
CAN communication
Output MCCB GW
AC input
AC output
CAN communication BMU
CAN communication
CAN communication
GW and BMU power supply
Fig. 1: System configuration of a LIB-equipped UPS 英語版用
Condens
Table 1: Specifications UPS for outdoor use
Remarks
Rated voltage
100 V
Output capacity (apparent power/active power)
1.2 kVA / 1.2 kW
Dimensions
Width
450 mm
Depth
300 mm
Height
900 mm
Footprint
135000 mm2
Mass
100 kg or less
Runtime
180 min (with an output capacity of 1 kW)
Operating environment
Ambient temperature: -20 to 50˚C Relative humidity: 20 to 90% (non-condensing)
Tetsuo Suzuki Joined SANYO DENKI in 1984. Power Systems Div., Design Dept. 1 Works on the development and design of power supplies.
21
SANYO DENKI Technical Report No.43 May 2017
When using a long-life storage battery: 470000 mm2 (estimated) Initial battery condition, ambient temperature 25˚C
英語版用
Times Ten
