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Issue 02 | 2008 |
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Dear Sir or Madam,
Our innovative VACUTAP® technology
is also continuing its travel around the world. We recently delivered the
2000th VACUTAP® VR to the MEA, the power provider of Thailand's capital
city of Bangkok. And there's one more new product to be mentioned: the
PQM 500. This compact, low-voltage compensation system offers a maximum
power capacity of 500 kvar per cabinet unit. Read about this and many other
interesting products in this edition.
Enjoy reading!
Sincerely
Michael Rohde
Managing Director
P.S: Feel free to contact our webmaster at webmaster@reinhausen.com in order to help us to get better every time.
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2000. VACUTAP® VR regulates voltage in Bangkok
At a festive ceremony at the Regensburg plant,
Managing Director Michael Rohde handed over no less than three new fresh-from-the-factory
VACUTAP® VR 1300s to high-ranking representatives of the MEA (Metropolitan
Electricity Authority), the local power supply company in Bangkok, and
to local transformer manufacturer Tira Thai. In his speech, Rohde emphasized
that MR was particularly proud to be able to contribute to the safe supply
of electricity in one of the biggest cities in the world. At the same
time he said he was also delighted that this order included the 2000th
VACUTAP® VR to be delivered – a new generation of MR tap-changers
which has been sold with great success all over
the world since 2006.
“As manufacturers we are aware of the particularly high standards that
customers expect of our products in terms of
quality and reliability. And we do all we can
to meet those standards.” The tap-changers for MEA are
destined for the Chidlom Terminal Station, a key substation in the centre
of the Thai capital, where high-voltage technology from Regensburg has
been used for decades. Two transformers (300 MVA, 230 kV) are to be supplied
by Tira Thai.
These versions of the VACUTAP® VR can be used for rated
through-currents of up to 1,300A. Here the VACUTAP® VR is the optimum
alternative to all OILTAP® M and most 'R' versions: the tap-changer
head and the oil compartment have the same diameters and only the installation
length is just slightly different. Finally, the VR also offers additional
possibilities for use for autotransformers and for high-voltage direct
current transmission. And what is especially important for most operators
is that the VR is maintenance-free for up to 300,000 switching operations.
Which in the majority of cases means for the entire service life of the
transformer. |
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VACUTAP® Game
The prizes are on their way
Over 3500 customers from 76 countries took part
in Powerplay - the new on-load tap-changer game.
And the winners have been determined. They come
from the USA, the United Arabic Emirates, China, Indonesia, Turkey,
Germany, Hungary and Canada. The prizes - an Ipod Touch, digital picture
frames and USB memory sticks- are already on their way. Our thanks
to everyone who participated! |
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| Fits through any door. The PQM 500 with its low
height of only two meters, packed with technical detail. |
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| A particularly good view of the spacer plate between
reactor and capacitor that separates the components and encourages
the heat exchange. |
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500 kvar in a Cabinet
PQM's New Reactive Power Compensation System
Our Power Quality Management® Division (PQM)
has added a new, controlled, reactive power compensation system for
low voltage to its product range. It offers a maximum power capacity
of 500 kvar per cabinet unit.
The components of the PQM 500 are designed for
operational reliability and long life: High-quality capacitors with
discharge reactors, reactors for elevated harmonic loads and full-fledged
capacitor contactors. 690-V fuses guarantee reliable control of capacitive
short circuit currents. A supporting spacer plate in the module separates
tuned reactor coil and capacitor from each other thus preventing the
capacitors from overheating due to the heat of the reactors. These hang
freely on the back in the air current. The individual modules are available
as ready-to-install solutions or completely mounted in an only 2-m high
switching cabinet which offers space for five double modules – that
results in a maximum power capacity of 500 kvar.
The MKK capacitor is
temperature-treated under vacuum and filled with environmentally friendly
pure nitrogen as protection against oxidation.
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It offers stable capacity
and long life coupled with low power loss. In case of failure or during
continuous overload, it disconnects from the power network automatically
thanks to the hermetically sealed metal housing and an internal overpressure
disconnection cutout. Capacitor discharge takes place within eight seconds
via discharge reactors– a faster and more gentle solution than with
resistors.
The protective effect on the compensation system increases
with the so-called tuning degree by up to 14%. MR always designs all
its reactors at least for the elevated harmonic limit values for industrial
and public power networks (network class 2, as per EN 61000-2-4 or EN
50160).
As a total system the PQM 500 passed a thermal type test at
the independent Berlin test lab IPH and individual modules were tested
for correct functionality. For safety-related applications the PQM 500
is available in a special, arc-fault-proof model.
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 k.witt@reinhausen.com |
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The
Retrofit Kit
Simple Exchange of Bulgarian On-Load Tap Changers
A large number of electric power companies
and manufacturing plants in the area of the former Council for Mutual
Economic Assistance (COMECON) have been using tap changers from Bulgarian
production plants for several decades. In many cases, these devices
have reached the end of their life expectancy. Frequently, however,
the state of the transformers is still so sound that the issue of a
suitable replacement can be considered.
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MR offers a professional
exchange solution that meets the requirements. Instead of the Bulgarian
standard on-load tap changer type, an MR on-load tap changer OILTAP®
MS can be installed without any difficulty. In connection with a new
motor drive TAPMOTION® ED, it makes the transformer fit for several
more years of operation. And customers who would like to invest even
more in the future should consider the use of an MR TAPCON® voltage
regulator.
Multiple advantages:
- Highest quality
- Tried and tested reliability
- Well proven motor drive TAPMOTION® ED
- Can be installed without major adjustment required within one day
- Simpler maintenance
- Longer service intervals
- Comprehensive after-sales service
- Higher level of profitability
If you are interested in an exchange, please contact our experts who are available
to answer all your questions at service@reinhausen.com or a.kulkov@reinhausen.ru
- Key data for the OILTAP® MSE 340
- Max. rated through-current: 340 A (three-phase)
- Max. rated step voltage: 3.300 V
- Max. rated switching capacity: 1.000 kVA (three-phase)
- Voltage for operational equipment Um: 72,5 & 123 kV
- Application: Star point (neutral point)
- three-phase design at any randomly selectable winding position
- Operating positions:
- Without change-over selector: 14 max.
- With change-over selector: 27 max
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service@reinhausen.com
a.kulkov@reinhausen.ru
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TAPCON® 240 Training at SP AusNet in Melbourne
A two day TAPCON® 240 training took place at SP AusNet, an Australian
energy supply utility, beginning of April. Thomas
Pest, service engineer of MR Germany flew to Melbourne
to conduct this training together with Tim Farrell,
General Manager of Reinhausen Australia.
Training requests can be sent to the contact person
of your country: Simply click on “contact” on this page
and choose your country: www.reinhausen.com |
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| tim@reinhausen.com.au |
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| The stand of PQM constantly attracted many visitors. |
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| POCOS is a modular compensation system with up to
six switchable steps. |
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| A central controller handles regulation, control
and monitoring of the systems. |
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Undisturbed Sine Curves
PQM took part at the Hanover Trade Fair
The Power Quality Management (PQM) Division
presented itself at the Hanover Trade Fair with all its products
and services. The experts from Berlin and Erfurt are specialised
in the compensation of reactive power and the reduction of harmonics.
Their skills in analysis, consulting and implementation cover a
broad range of medium and low-voltage network applications some
of which make highly complex demands on the power supply.
A precise analysis always precedes any improvement
in the state of public and industrial current networks. Engineering
know-how gained from 15 years of experience with network voltage quality
is already incorportated into the measurements of power and harmonics
conditions. A program developed by PQM simulates the states with different
load and power consumer characteristics. The results permit reliable
statements to be made on the capacity utilization, the need for compensation,
the harmonics to be expected and other characteristic values of the
network. This permits the optimal solution to be identified even when
complex and sensitive systems are involved.
POCOS
POCOS is the highest-quality
system in PQM's medium voltage program. It consists of several modules
in the switching cabinet, usually up to six compensation steps. The
cabinets must also be arranged modularly next to each other. The system
can then be expanded as necessary. It is equally suitable for indoor
and outdoor operation. Regulation, control and monitoring are implemented
in these systems with a central controller.
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POCOS is available in
models without tuned reactor and with tuned reactor or as a filter
circuit system. Special modules are available for nonstandard applications
(e.g., a filter circuit step with high pass resistor). Possible operating
voltages range from 4.16 to 20 kV and the capacitive power can be
up to 1.8 Mvar per step.
The Voltage Experts
In comparison to low
voltage, medium-voltage networks have a high degree of power density
which must have sophisticated protective mechanisms to ensure operational
reliability and safety. The goal must be an uncompromisingly reliable
switchoff when a failure occurs. Protection of systems and people
plays a central role during system planning. In many cases an optimal
compensation may contain a mixture of low and medium-voltage elements.
In PQM users find one of the very few providers who are proficient
in both areas and are able to connect them with one another.
The low-voltage
program offers everything from single components such as power capacitors
and modules down to ready-to-install compensation systems of varying
degrees of complexity. Conventional reactive power compensation which
PQM offers in regulated systems with up to 500 kvar per cabinet is
the right choice for many distribution networks. If the number of
switching operations is too high for the contactors being used, dynamic
compensation with thyristor power modules is the correct selection.
The next step in counteracting strong harmonics and current distortions
is a coordinated filter solution. The technically most sophisticated
solution is then the active filter which ensures voltage quality even
in the most complex of network situations. |
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| k.witt@reinhausen.com |
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Conference in Singapur
120 enthusiastic attendees
From April 23rd to 24th MR’s representative
in Singapore, Aspectus Engineering Services Pte Ltd, held a conference
on the subject of high voltage technology which was attended by
120 engineers and managers in charge of asset management, design
or construction.
The feedback sheets clearly showed the strong
interest of attendees from companies such as SP Powergrid, Meiden
and ABB. Of particular interest were the lectures that covered
all current subjects of high voltage technology. DILO informed
about SF6 technology, SP AusNet lectured on oil analysis and –
together with MR – on asset management. Experts from MR Germany
and Reinhausen Asia Pacific presented the topics on-site OLTC replacement
and transformer monitoring as well as their main topic, the VACUTAP®
OLTCs with low maintenance requirements.
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| The participants actively
made use of the possibility to talk to the experts and attendees
from other companies in the exhibit following the presentations.
Products such as Messko's dehydrating breather MTraB® and MR’s
VACUTAP® OLTC were the highlight of this exhibit being maintenance-free
or demanding only low maintenance. Both products were presented
in on-hands demonstrations. A well organized day transferring a
lot of information, that was the overall feedback of the attendees
at the end of the event. |
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| mr_rap@reinhausen.com.my |
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Meet
us in Paris!
From 25 to 28 August 2008 we are once more
in Paris: The international fair Cigré takes place in the Palais
des Congrès in Paris. We are looking forward to welcoming you
at stand 45. |
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