Transcript Hydro Power Plant Automation Presentation - Bitlis-MEN

HYDRO POWER PLANT AUTOMATION
“Bitlis-MEN” presenting
Ease of operation will be with you from now on and you can see and manage your business anytime and anywhere,
from home, office and even when travelling.
Our experience and competence, as well as the innovations and advanced technologies used by our Company,
serve to meet the needs of our clients all over the world. Our high-skilled consultants, who lecture at and collaborate
with the State Engineering University of Armenia, the Yerevan State University, the State Engineering and
Construction University of Yerevan, the Institute of Energetics and other research institutions, will help you to achieve
the best results.
The Company can study your HPP with the help of up-to-date technologies and draft a complete automation plan for
your HPP in a short space of time. We can also provide for a partial automation of the HPP, namely the automation
of the assemblies and units which you regard as basic.
The offered System implies the following,
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Diagnostics
•
Monitoring
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Operation control
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Improvement of water consumption
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Improvement of plant units operation
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Increase of economic efficiency
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Detection of emergencies and pre-emergency situations and quick response
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Transfer of the information relating to the HPP-generated power and the basic quantities thereof to any place in the world
upon Your request.
HPP AUTOMATION
BITLIS-MEN Company offers safe and simple engineering solutions for the automation of small HPPs.
HPP AUTOMATION
Below are the major tasks faced by the small HPP and the
solutions offered by BITLIS-MEN Company.
Solution: Automated system for the optimal
management of level
The maintenance of the operating level of water in the
intake basin is important for the provision of the
maximal efficiency of the assemblies, which requires a
definite height and quantity of water. The excess water
is removed through an outlet and the bigger quantities
of the excess water are removed through a disaster
outlet. The problem is that the excess water may flow
out of the basin and flood the area by causing serious
damage if the operator fails to notice the water surplus
and fails to open the emergency outlet in time.
BITLIS-MEN Company will design and install an
automated control system of the intake basin’s disaster
outlet’s valve, which will provide for the maximum
permissible water level in the intake basin in case if the
water level exceeds the required operating levels set for
the HPPs.
The System may store the collected
information in the database for the purpose of further
monitoring, upon Your request. The System may also
send an e-message or a short message on emergency
situations, to the operator or controller.
HPP AUTOMATION
1. Task: Water level maintenance
Solution: Automated cleaning system
HPP's intake basins are located far from the mechanical
engineering assemblies’ hall and often in high and hardto-access areas. The pipeline joins the water basin at
the depth of 5-10 meters of the water level so that to
exclude the possible penetration of air into the pressure
line. The intake trash screen designed to prevent the
penetration of trash into the line, should also be built on
the above-mentioned depth. It is required to provide for
a regular and timely cleaning of the screen to prevent
possible dangers. The failure to clean the screen may
result in decrease of the capacity, which implies
ineffective operation of the assembly, and the excess
decrease of the capacity may bring to the penetration of
air into the pipeline and occurrence of emergencies
(water hammer). To avoid suchlike situations it will be
necessary to provide for frequent cleaning of the trash
screen irrespective of the degree of the blockage and
this may be regarded as an effective solution.
BITLIS-MEN will design and install an automated
system for trash screen clogging detection that may
alarm and/or launch the automated cleaning system in
case of blockage of the screen. The System may
automatically store the clogging-relating information in
the database for the purpose of further monitoring, upon
Your request. The System may also send an emessage or a short message on emergency situations,
to the operator or controller.
HPP AUTOMATION
2. Task: Trash screen blockage
Solution: Automated water-metering system
There are a number of methods to determine the
quantity of flowing water. Some of them, like the
Doppler-effect-using ultrasound metering equipments,
are expensive (the cost of the equipment varies within
Euro 10,000-20,000), the others imply availability of
additional artificial obstacles in the line (for example,
Ventura or diaphragm water meters) and are difficult to
implement, as well as bring to the loss of mechanical
power and reduction of the HPP’s efficiency.
BITLIS-MEN Company suggests a new optimal and
cost-effective solution of the problem. The approach is
based on the physical phenomenon used in the Ventura
water meter, but it does not imply the installation of
additional obstacles. The System may automatically
store the water- clogging relating information in the
database, for the purpose of further monitoring, upon
Your request. The System may also send an emessage or a short message on emergency situations
to the operator or controller.
1 – intake basin, 2 – intake line, 3 - manometer Hm, 4 – pump or a turbine, 5 –
diffusor , 6 - water, 7 - Hs, 8 - Ho, 9 - level (for metering Hs - Hû)
HPP AUTOMATION
3. Task: Determination of water quantity in the pipe
Solution: Automated emergency closing system
The electric power generation and distribution
standards require an immediate shutdown of the electric
power generating assemblies in case of an emergency
cutout of the electrical network. The HPPs are not
provided with the power supply required for their own
needs and this makes it impossible to quickly close the
intake valves of the assemblies. The assemblies are
likely to get into a tremor and may be damaged by
endangering the surroundings.
The assembly intake valves' emergency closing system,
offered by BITLIS-MEN Company, is comprised of a
direct current rechargeable battery, a direct current
engine and a drive belt designed for the closing of the
assembly's valves.
The valve closing speed should be taken into
consideration when selecting the direct current battery
and engine, so that «to prevent the tremor» and «to
avoid a water hammer».
The encoder installed in the drive belt of the valve
notifies the system on the degree of opening of the
valve.
Battery-driven valve mechanism; 1 reductor, 2 – control panel, 3 - alternating
current motor, 4 – constant current
motor, 5 – constant currency battery
HPP AUTOMATION
4. Task: Emergency closing of intake valves
Solution: Accident detection automated system
Accidents are usually preceded by pre-accident
situations. Thus, the detection of pre-accident situations
will help us to prevent the emergencies. For example,
the turbine's bearing- breakage-caused accidents may
be prevented by regular monitoring of the temperature
and fluctuations level thereof. Or the accidents caused
by the breakage of the intake valve may be prevented
by monitoring of the load and the position of the closing
plates. The excess load of the engine implies availability
of a mechanical obstacle in the valve opening or closing
process. Thus, the engine should be switched off
immediately so that to prevent the burning out of the
engine or breakage of the valve.
BITLIS-MEN Company offers the assembly monitoring
and management automated system, which can check
the temperature and fluctuations of the turbine,
generator and engine
bearings, as well as the
temperature of the generator turns. The System can
also check the degree of load of the engine installed on
the assembly’s intake valve and can switch it off, if
required, to prevent the breakage of the valve. The
System will follow the readings of the electronic water
meter installed on the exit of each radiator designed to
cool the oil of the pump, as well. This allows regulating
the water discharge and provides for the sufficient
cooling of the bearings.
HPP AUTOMATION
5 Task: Accident detection
Solution: Automated control system
The human-factor-caused accidents are likely to occur
at the HPPs in case of manual operation of the
assemblies by operators, especially when there is a
necessity of synchronization of the assembly and the
network's parameters prior to switching on the power
system. This is rather difficult to do though the operator
has to solve the task every time when switching on the
assembly. Meanwhile, a short circuit may take place if
the operator fails to switch on the assembly in time, that
is, when the assembly is not synchronized with the
network, and this may have negative consequences (up
to burning out of the assembly).
The solution offered by BITLIS-MEN Company implies
the implementation of an automated system that will
make it possible to automatically synchronize and
connect the assembly to the network. The System will
also make it possible to automatically bring out the
assembly out of the network. The above-mentioned
functions may be performed both by remote and direct
control, upon Your request.
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HPP AUTOMATION
6. Task: Remote and direct control
Solution: Automated operation system
As a rule, the number of assemblies available at the
HPPs exceeds one. And this is a rather difficult task to
provide for the effective operation of the assemblies,
that is the generation of maximal capacity with the
available water quantity. The incoming water quantity is
constantly changing. The decrease (increase) of the
incoming water quantity requires the switching off
(switching on) of some assemblies or the decreasing
(increasing) of the intake valve openings by maintaining
the operating level of the water height in the intake
basin. Besides, the working curves of the assemblies
are changing with the lapse of the time due to the wear
and repairing of the assemblies. It is necessary to use
the highest efficiency ranges /working curve/ to provide
for an effective operation. The operator may not solve
the above-mentioned problems and there is a necessity
to set up an automated operation system that may
effectively operate the HPP based on the incoming
water quantities.
The System offered by BITLIS-MEN Company can make an
optimal selection of the number of the HPP's assemblies and
the operation mode thereof based on the incoming water
quantity to provide for the maximal generation of the electric
power provided that the working curves of the assemblies
are available. The System may also determine the actual
values of the working curves for the given assembly.
HPP AUTOMATION
7. Task: Effective operation of the assemblies
BITLIS-MEN Company makes use of advanced office and production microcomputers (including the National
Instruments Company’s cRIO and PXI platform-based and real-time-working microcomputers), sensors and actuators
by ABB, Siemens, LEM and other known companies as its hardware and the text and graphic, Windows and Web
programming languages and technologies (LabView, C#, PHP) as a software support.
HPP AUTOMATION
Technologies used
One of the key tasks of the HPP is to provide for a complete and centralized control and monitoring. The HPP's
control and monitoring distributed system (SCADA) offered by BITLIS-MEN Company makes it possible to control
and monitor the operations of the HPPs at any level.
The systems, which are comprised of separate units located far from each other, are considered to be distributed.
The typical models of the HPPs are comprised of a head, pipeline, mechanical engineering assemblies’' hall and
offtake. Two of the mentioned units have sub-units. Namely, the head consists of an intake, intake basin, trash
screen and outlet valves, the components of the mechanical engineering assemblies' hall are the intake assemblies,
power cables and el.substation. The assembly in its turn has subunits, such as the intake valve, turbine and
generator. The generator has a rotor-stator, control panel. Thus, a HPP is a complex multilevel (multilayer) distributed
system.
Our contact information
BITLIS-MEN Ltd.
Armenia, Yerevan
Manandyan street 16, #7
Tel. +374 (10) 21-97-53
Fax +374 (10) 21-97-82
El-address:
[email protected]
HPP AUTOMATION
Distributed systems (SCADA)