2. Offering Total Solutions for Every Need
Systems are the arteries of any information-oriented society, and it takes
expertise in both software and hardware to construct quality systems.
Toshiba Corporation, with its advanced technology in the fields of
electronics and energy and its depth of experience, can offer
comprehensive systems that precisely answer the needs of every
customer.
As a system organizer, Toshiba aims to be its customer's best partner.
Systems for Multiple Purposes
Based on its wide technological expertise in control, information,
communications and multimedia, Toshiba constructs systems to perform
operations ranging from general to multiple purpose in a number of
fields.
Toshiba demonstrates efficiency and originality in its creation of
speedier and more precise multiple-purpose systems that are easy
enough for anyone to use. In this period of internationalization,
liberalization and diversification of customer needs, Toshiba integrates
data to provide high-value-added information, thereby answering
society's needs.
1

3. Thermal Power Generation
Thermal
Taking advantage of the special characteristics of thermal power
generation to maintain a stable supply of electricity, Toshiba is
searching for ways that allow energy to support the coexistence of
technology and the environment. Toshiba has built up a
comprehensive technological base through its century of
experience in the electric power field. We supply high-quality
electric power systems not only in Japan, but around the world,
and we have won a high degree of trust from our customers. We
aim to construct energy systems that are even more efficient and
environmentally friendly, and in doing so, to contribute to a more
enjoyable society.
PowerTechnology Power-Generation
Systems
Technology
Technology Information and
Control Systems
● Nuclear Power-Generation Systems
● Conventional Power-Generation
Systems
● Combined-Cycle Power-Generation
Systems
● Geothermal Power-Generation
Systems
● Computer
● Communication
● Control
● Multimedia
2

4. Power-Generation Systems
Today's increasingly diverse societies require that power plants
be highly efficient, economical, easy to operate, and large
capacity. Nuclear-power plants are expected to be the basic
power source for large capacities of power, while conventional
plants will continue their high level of operation as a mediumcapacity power source. With its decades of experience in powerplant technologies-as well as being a leading integrated
manufacturer of electronics, computers and semiconductorsToshiba is uniquely qualified to design and install powergeneration systems to best meet the particular needs of each
installation site.
Nuclear Power-Generation System
Large-capacity output and high reliability are two key requirements
for nuclear-power plants.
Geothermal Power-Generation System
This unique system taps the natural supplies of heat energy that
have accumulated inside the earth. Thus, geothermal power is
generally considered to be "earth-friendly."
3

5. Conventional Power-Generation
"Conventional" plants are those that burn coal, oil or natural gas to
generate power, hence they are called "thermal" power plants. Two
key areas where these types of plants must be improved are increased
capacities and higher rates of efficiency.
Combined-Cycle Power-Generation
This is a new type of power-generation system that uses a gas turbine
to drive a generator. It also has facilities to recover waste heat from
the gas turbine to generate steam and drive a steam turbine.
Combined-cycle technology operates at high thermal efficiency,
generates large-capacity output, and has excellent operability. Another
advantage is that NOx emissions from a gas turbine's exhaust have
been reduced to very low levels.
Conventional Power Plant
This is a common type that burns coal, oil or natural gas to
generate steam, which drives a steam turbine. It is generally
called a "thermal power plant."
Medium-Load Power Supply
The type of power supply that regulates power generation
according to power demand that varies from season to season or
from time to time each day is called a "medium-load power
supply," in contrast to a "basic power source" that keeps supplying
a constant amount of electric energy throughout the year.
4

6. Information and Control Systems
Achieving a high degree of power-plant reliability is crucial for assuring a steady supply of electricity to the
communities and industries a plant serves. The plant's information and control systems provide an integrated
interface that is responsible not only for monitoring and controlling its boiler and turbine-generator, but for all
other tasks as well, such as data management and technical-service support.
Electricity is vital commodity for maintaining
and improving our present-day societies and
living standards. To ensure adequate, reliable
supplies of electric power whenever and
wherever needed, Toshiba no", offers a
dynamic stream in the 21st century, the
TOSMAP-DS, Toshiba Microprocessor Aided
Power system control-DS which is state-of-theart Distributed Control System (DCS)
developed for the power plant control. To
satisfy the social demands, the TOSMAP-DS is
featuring:
● Comprehensive integration of plant control
● Open and flexible system
● Easy and Unified Engineering
● Fully independent Human-Machine
Interface
● Powerful and reliable controller
Toshiba TOSMAP-DS covers a wide range of
systems to meet diverse needs-geothermal
power plant control, coal fired power plant
control, combined cycle power plant control
and so on. The TOSMAP-DS serves as a key to
provide
excellent
operability
and
controllability, high reliability, and easy
maintainability for power-plant control.
The
TOSMAP-DS
embodies
Toshiba's
unrivaled know-how of power-plant control
systems accumulated through decades of
experience supplying many power plants
equipped
with
the
latest
electronic
technologies.
5

7. Amenity
UserHumanUser-Friendly Human-Machine Interface
━New Operation System for Thermal
Power Plants
In recent years, the human-machine
interface in thermal power plants has
become not only the interface between
operators and plant equipment, it
also is becoming the power
station's "face," or moreover, the
face of the power company itself.
As the contact point between the control
system and operators, the human-machine
interface is considered a highly important
factor of the system concept in developing
an advanced information and control
system based on the fundamental concept
of "human-friendly" technologies.
To design an effective human-machine
interface, the following factors must be
considered. First, the environmental
design of the plant's central control room,
where operators spend a large part of their
working day. Second, the configuration of
the human-machine interface equipment
located between operators and the system.
And third, specifications of the humanmachine functions.
Safety
Concentration
Total Design Concept of Central Control Room
To design central control rooms that provide
1) balanced amenities for operator comfort,
2) concentration of necessary control systems, and
3) personnel safety, while concurrently considering
complex relationships between humans and
their environment, as well as plant management
and the machines used for such management the
following factors must be considered:
● Environmental design that provides operator's
amenities;
● Functional design for achieving operational
forms:
● Human-machine interface equipment designed
according to ergonomic factors.
6

8. Advanced
Control System
for Power Plants
7

9. 8

10. Information and Control Engineering
Information and control engineering develops a system with a human-machine interface that best meets the
customer's requirements for advanced-yet-easy operation of systems.
Basic Design of Information and
Control Systems
The plant's information and control
systems are determined based on
requirements of mechanical and
electrical engineering. The system
also represents the needs of the
customer, that is, the electric power
company. To ensure maximum
operational surveillance and ease of
operation, a basic system plan is
created; the system's configuration
is drawn up; the system's inputoutput information is collected;
control logic diagrams arc prepared;
and the logic of the plant .s
automation systems is examined
carefully.
Such
integrated
engineering efforts lead to the
development of information and
control systems that are humanfriendly.
9
Central Control Room Design
To achieve the highest levels of
surveillance,
operability,
and
operator comfort, the design of a
thermal power plant's central
control room is carefully examine
in coordination with the design
staff of Toshiba's head office.

11. Simulator
REPLICA-TYPE SIMULATOR.
GENERAL-PURPOSE COMPACT EWS
Initial training for newly assigned operators.
Refresher training for experienced operators.
Enhances operator's ability to carry out appropriate
actions under emergency conditions.
A suitable tool for testing/licensing operators.
FULL SCALE SIMULATOR
● Full-scale simulation of a particular power plant
● Actual-size control panels/desks identical with the
plant being simulated (fully realistic operation
environment)
● Detailed plant modeling
● DCS part is applied in either of two ways
Allow trainees to ascertain the characteristics of a
general plant instead of a particular plant.
Enables a flexible training schedule depending on
individual needs.
Suitable for training new company personnel; not only
operator's but also technicians, engineers, and even
managers.
SEMI REPLICA
● Simulation of a particular power plant
● Compact size
● Only a control desk is installed (large-size panels, i.e.
auxiliary control panel and back-up panel, are
deleted)
● Detailed modeling
GeneralGeneral-purpose compact EWS
● A generic model for each type of power plant
(Thermal, combined-cycle, etc.)
● Simulation of a plant's overall key features
● Simulation of major emergency conditions
● Compact size with no control panel
(Single unix workstation or PC based screen
ti )
10

12. D-EHC Digital Electro-Hydraulic Control System
The D-EHC provides the standard functions that are essential for turbine control. In addition besides,
various optional functions can be implemented in the D-EHC according to the client's requirements.
If a BFI'-turbine is being used exists, a D-EHC for the BFP-turbine can also be provided.
CONTROL FUNNCTIONS
MONITORING FUNCTIONS
DMAIN TURBINE D-EHC
[Standard Functions]
TURBINE SPEED CONTROL
LOAD CONTROL
LOAD LIMITING
LINE SPEED MATCHING (LSM)
FA/PA VALVE TRANSFER
CV CHEST WARMING
AUTOMATIC TURBINE START-UP
THERMAL STRESS CALCU LATION
TURBINE TRIP
TEST-TURBINE VALVES
-TURBINE OVERSPEED
BACK-UP OVERSPEED GOVERNOR
The D-EHC's display terminal CRT
provides comprehensive informations
to the operator for turbine control and
monitoring. A color printer (i.e., hard
copies) for use with the D-EHC's
display terminal is available as an
option.
[Optional Functions]
INITIAL PRESSURE REGULATION
(IPR)
POWER LOAD UNBALANCE (PLU)
EARLY VALVE ACTION (EVA)
LOAD LIMIT/REFERENCE FOLLOWER
(FLR)
VACUUM UNLOADER (VUL)
AUTOMATIC FREQUENCY CO NTROL
(AFC) (ISOCHRONOUS)
AUTOMATIC LOAD REGULATOR
(ALR)
TURBINE BYPASS VALVE CONTROL
Load Control
Vibration Monitor
11
System Configuration

13. Vibration monitoring and Diagnostic system
SYSTEM FEATURES
Advanced monitoring and logic-based
diagnostic functions that have been
developed as a result of Toshiba's
decades of international experience as
a power plant supplier.
● Man-machine interface offers
maximum user-friendly features
based on the high-resolution, fullcolor, graphic interface of personal
computers equipped with the
Microsoft Windows operating
system.
● Advanced system offers
simultaneous monitoring and
diagnostic capacity for two powerplant units.
● Combined monitoring of both realtime and historical data
● Constant, automatic storing of
system data during diagnosis
● Easy compatible interface with the
existing TSI
● Applicable for all types of sensors,
gap sensors (one way, two way), onshaft sensors and pedestal sensors
● Interface compatibility with user's
existing computer system and DCS.
SYSTEM FUNCTIONS
MONITORING
The system enables easy, intuitive
operation of the turbine-generator's
sophisticated monitoring functionsdespite any elaborate operating
conditions- by user of colorful, highresolution operator terminals and
printer-output devices that provide
immediate access to real-time on-line
and off-line data (e.g., equipment's
historical data).
Monitoring via operator's terminals
can easily he switched between dualshaft and eight-shaft monitoring.
PROCESSING OF HISTORICAL
DATA
Storage of all data recorded under
various operating conditions is done
automatically, enabling thorough
and speedy analysis and diagnosis.
● Start and stops ...Data is stored for
the unit's previous 30 starts and
stops, at shaft-revolution intervals
of 25 rpm.
● Abnormal conditions ...When an
abnormal condition occurs, the
system records and presents data
from 30 minutes before the
abnormal event to 30 minutes after,
at intervals of 10 seconds.
● Normal operation ...The following
plant-system data is accumulated
and stored: one day (at 10-second
intervals), three weeks (at 1-minute
intervals), two years (at 1-day
intervals).
SYSTEM CONFIGURATION
DETECTION OF ABNORMAL
VIBRATIONS
● Detection of abnormal vibrations is
assured through real-time analysis
data such as amplitude level,
change rate, vector change rate, and
spectrum level. Data for such factors
are displayed on operator's
terminals. Any abnormal events are
simultaneously announced.
● Software maintenance ...Various
criteria for fault-detection and
diagnosis can be set via system
software to better suit the particular
needs and parameters of individual
power plants.
ANALYSIS AND DIAGNOSIS
Expert computer and knowledge
systems are applied via the system's
analysis and diagnostic functions,
resulting from Toshiba's decades of
experience 1) as a major international
supplier of power plants, as well as 2) *1: Assured compatibility with various
computer and network systems.
an industry-leading manufacturer of *2: All necessary process parameters for
high-tech electronics.
plant-system monitoring and diagnosis
BALANCING SUPPORT
The system offers rapid and precise
calculations for optimal balancing of
the power plant's components and
subsystems.
● Automatic calculation of shaft
balance weights and alignment
angles are output to plant operator
terminals.
● After shaft-rotation balance has
been optimized, the system
calculates vibration conditions to
assure that the intended changes
produce the intended results.
arc input front the DCS via hardwired
boards or by electronic transmission
(optional)
*3: Vibration signals can also be input from a
plant's existing turbine supervisory
equipment (TSI) However, the plant',
exiting system must first be enhanced
through installation of a date-processing
computer and a vibration-input device.
12

14. Systems Contributing to Labor-Saving in
Local Activities at Thermal Power Stations
While automation systems are being
widely applied to operations at thermal
power stations, the introduction of such
systems into local activities, such as
patrols and inspections, or special local
operations, has not progressed smoothly
because
these
activities
require
operators and maintenance staff to deal
with the particular situations.
In line with the needs of its customers,
Toshiba has been making continuous
efforts to develop systems that
contribute to labor-saving in such local
activities at thermal power stations, and
has joined them as part of the series.
Patrol System (PATSYS)
PATSYS is designed to support field
work for: collecting, editing, and
managing (plant) field data.
PATSYS consists of:
1) A compact, hand-held terminal for
data collection.
2) A high-performance personal
computer for data management
featuring comprehensive lists and
charts.
Features
● Compact design system
Consists of a hand-held terminal and
a personal computer
● Paperless control
Requires that patrol staff be equipped
only with hand-held terminals
● User-friendly interface
● Optical data transmission
Optical transmitting between handheld terminals and personal
computers
● Abundant editing functions
Lists, charts, correlative analysis
● Patrol reliability
1) Alarm indicators
2) Patrol instructions
(e.g., equipment, items, courses)
PATSYS Hardware Configuration
█ Printer
● used to print data lists, etc.
█ Personal computer
● for editing patrol historical data
● for setting patrol courses/items
Local Abnormal Condition Detection System
█ Optical connecting adapter
Hand█ Hand-held terminal
● used to input patrol data
Download data
Upload data
Steam-leak Detection by Image Processing
13
Abnormal Noise Detection by Sound Processing

15. Computer Systems for Operation and Maintenance
Data Management in Thermal Power Stations
With the growing number of aged units
in thermal power stations and the need
to adopt more severe operating
conditions to suit changeable load
demand, the number of miscellaneous
tasks that must be carried out by power
station personnel related to operation
and maintenance is steeply increasing.
In order to maintain highly reliable
operation and prolong equipment life,
computerization of these tasks is
essential to ensure that they are
effectively executed.
To satisfy these requirements, Toshiba
provides a computer system line-up
known as the "intensive information
integrated system" as part of its
advanced information and control
system, the TOSMAP-GS series.
Historical Data Storage and
Management System
This system saves the real-time data of
thermal power station as a historical
database of operation. It is provided with
various functions, such as monitoring, of
deterioration
analysis
of
plant
characteristics,
and
performance
monitoring by calculation of heat
balance and efficiency
Maintenance System
This system saves specification and
historical data for plant equipment to
support the planning of periodical local
patrols and inspections.
Intensive information integrated system components in power station computer system
14

16. Research and Development
Today's thermal plants must respond to the diverse and increasing needs of society's power
demands. In addition to improved operation panels and central CRT displays to aid safety
and efficiency in plant operation, Toshiba researchers are also developing information and
control systems based on artificial intelligence (AI) and other new control theories.
Scale Model of Central Control Room
NextNext-Generation Monitoring and Control Systems
The use of a huge, wall-mounted process-flow screens,
as well as high-resolution, full-color terminals facilitates
maximum operator alertness and responsiveness to the
plant's operating conditions. To realize a humanfriendly operational environment, a scale model of the
central control room is used to simulate all operator's
visibility by CCD camera provided in the mode.
15

17. AlAl-Computer Support
The growing diversity of energy
demands requires that thermal
power plants be increasingly
flexible in their ability to adapt to
the need for frequent plant starts
and stops. Toshiba has developed
an artificial-intelligence operationsupport system that significantly
assures rapid, accurate recovery of
plant operation in the event that
unplanned operational changes or
faults occur. The highly flexible yet
automatic responses of the AI-based
system identify individual problems
before they become system faults,
thereby enhancing reliability and
efficiency of the operation.
Application of Advanced Control Theories
A range of modern-day control theories such as fuzzy logic, neural networks,
and GPC can be applied to nonlinear and multiple input-output systems
according to the specific characteristics of a plant's control objectives.
Toshiba is constantly conducting research on these and other advanced
control systems.
Operating Support System Display
Prototype Application of Advanced Controls
Equipment Diagnosis System Display
16

18. Engineering Network
Toshiba thermal power plants are built by the concerted efforts of its
Thermal Power Plant Division and other divisions of Toshiba
Corporation, as well as member companies of the Toshiba group. An
extensive range of R&D efforts in thermal power engineering is a
certain step toward realizing significant technological developments
that will constitute the thermal power-generation plants of tomorrow.
Head Office (Tsurumi)
17
Head Office (Shibaura)
Keihin Product Operation

19. Toshiba Thermal Power Plants
Operating Around the World
Operating reliably under the world's
widely varying environmental conditions,
a total of 203 Toshiba thermal generator
units [total capacity as of Sept.1993:
30,081 MW] are serving the industries
and homes of many nations around the
world.
Fuchu Works
Hamakawasaki Works
18

20. TOSHIBA
TOSHIBA CORPORATION
POWER SYSTEMS AND SERVICES COMPANY
36-5,TSURUMICHUO 4-CHOME, TSURUMI-KU, YOKOHAMA 230-0051 JAPAN
FAX: 81-45-500-1592 PHONE: 81-45-500-1553
Overseas Office:
Mexico City, Caracas,
Rio de Janeiro, Buenos Aires,
London, Wien, Berlin,
Hong Kong, Bangkok, Manila,
Jakarta, Sydney, Wellington,
Johannesburg, Beijing
Toshiba International Corporation:
San Francisco, Houston,
Toshiba International Corporation
Pty. Ltd.: Sydney
Toshiba International Company
Limited: London
● For further information, please visit our website at http://www.toshiba.co.jp/index.htm and contact your nearest Toshiba Liaison
Representational Operations-Producer Goods.
● The data given in this brochure are subject to change without notice.
3067-5
'99-6 C1