Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Offering Total Solutions for Every NeedSystems are the arteries of any information-oriented society, and it takesexpertise in both software and hardware to construct quality systems. Toshiba Corporation, with its advanced technology in the fields ofelectronics and energy and its depth of experience, can offercomprehensive systems that precisely answer the needs of everycustomer. As a system organizer, Toshiba aims to be its customer's best partner. Systems for Multiple PurposesSystems for Multiple PurposesSystems for Multiple PurposesSystems for Multiple Purposes Based on its wide technological expertise in control, information, communications and multimedia, Toshiba constructs systems to performoperations ranging from general to multiple purpose in a number offields. 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 answeringsociety's needs.
1
ThermaThermaThermaThermal Power Generationl Power Generationl Power Generationl Power Generation Taking advantage of the special characteristics of thermal powergeneration to maintain a stable supply of electricity, Toshiba issearching for ways that allow energy to support the coexistence oftechnology and the environment. Toshiba has built up acomprehensive technological base through its century ofexperience in the electric power field. We supply high-qualityelectric power systems not only in Japan, but around the world,and we have won a high degree of trust from our customers. Weaim to construct energy systems that are even more efficient andenvironmentally friendly, and in doing so, to contribute to a moreenjoyable society.
Technology PowerTechnology PowerTechnology PowerTechnology Power----GenerationGenerationGenerationGeneration SystemsSystemsSystemsSystems ● Nuclear Power-Generation Systems ● Conventional Power-Generation
Systems ● Combined-Cycle Power-Generation
Systems ● Geothermal Power-Generation
Systems
TechnologTechnologTechnologTechnology Information and y Information and y Information and y Information and Control Systems Control Systems Control Systems Control Systems ● Computer ● Communication ● Control ● Multimedia
2
Power-Generation Systems
Today's increasingly diverse societies require that power plantsbe highly efficient, economical, easy to operate, and largecapacity. Nuclear-power plants are expected to be the basicpower source for large capacities of power, while conventionalplants will continue their high level of operation as a medium-capacity power source. With its decades of experience in power-plant technologies-as well as being a leading integratedmanufacturer of electronics, computers and semiconductors-Toshiba is uniquely qualified to design and install power-generation systems to best meet the particular needs of eachinstallation site.
Nuclear Power-Generation System
Geothermal Power-Generation System
Large-capacity output and high reliability are two key requirements for nuclear-power plants.
This unique system taps the natural supplies of heat energy thathave accumulated inside the earth. Thus, geothermal power isgenerally considered to be "earth-friendly."3
Conventional Power-Generation
"Conventional" plants are those that burn coal, oil or natural gas togenerate power, hence they are called "thermal" power plants. Twokey areas where these types of plants must be improved are increasedcapacities and higher rates of efficiency.
Combined-Cycle Power-Generation
This is a new type of power-generation system
that uses a gas turbineto drive a generator. It also has facilities to recover waste heat fromthe 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. Anotheradvantage is that NOx emissions from a gas turbine's exhaust havebeen reduced to very low levels.Conventional Power PlantThis is a common type that burns coal, oil or natural gas togenerate steam, which drives a steam turbine. It is generallycalled a "thermal power plant." Medium-Load Power Supply The type of power supply that regulates power generationaccording to power demand that varies from season to season orfrom time to time each day is called a "medium-load powersupply," in contrast to a "basic power source" that keeps supplyinga constant amount of electric energy throughout the year.
4
Information and Control SystemsAchieving 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 maintainingand improving our present-day societies andliving standards. To ensure adequate, reliablesupplies of electric power whenever andwherever needed, Toshiba no", offers aaaadynamic stream in the 21st century,dynamic stream in the 21st century,dynamic stream in the 21st century,dynamic stream in the 21st century, theTOSMAP-DS, Toshiba Microprocessor AidedPower system control-DS which is state-of-the-art Distributed Control System (DCS)developed for the power plant control. Tosatisfy the social demands, the TOSMAP-DS isfeaturing: ● 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 ofsystems to meet diverse needs-geothermalpower plant control, coal fired power plantcontrol, combined cycle power plant controland so on. The TOSMAP-DS serves as a key toprovide excellent operability andcontrollability, high reliability, and easymaintainability for power-plant control. The TOSMAP-DS embodies Toshiba'sunrivaled know-how of power-plant controlsystems accumulated through decades ofexperience supplying many power plantsequipped with the latest electronictechnologies.
5
UserUserUserUser----Friendly HumanFriendly HumanFriendly HumanFriendly Human----Machine Interface Machine Interface Machine Interface Machine Interface ━━━━New Operation System for ThermalNew Operation System for ThermalNew Operation System for ThermalNew Operation System for Thermal Power PlantsPower PlantsPower PlantsPower 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 controlsystem and operators, the human-machineinterface is considered a highly importantfactor of the system concept in developingan advanced information and controlsystem based on the fundamental conceptof "human-friendly" technologies. To design an effective human-machineinterface, the following factors must beconsidered. First, the environmentaldesign of the plant's central control room,where operators spend a large part of theirworking day. Second, the configuration ofthe human-machine interface equipmentlocated between operators and the system.And third, specifications of the human-machine functions.
Total Design Concept of Central ControlTotal Design Concept of Central ControlTotal Design Concept of Central ControlTotal Design Concept of Central Control RoomRoomRoomRoom To design central control rooms that provide 1) balanced amenities for operator comfort, 2) concentration of necessary control systems, and3) personnel safety, while concurrently considering
complex relationships between humans andtheir environment, as well as plant managementand the machines used for such management thefollowing 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.
Safety
Amenity
Concentration
6
Advanced Control System for Power Plants
7
8
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 Basic Design of Information and Basic Design of Information and Basic Design of Information and Control SystemsControl SystemsControl SystemsControl Systems The plant's information and controlsystems are determined based onrequirements of mechanical andelectrical engineering. The systemalso represents the needs of thecustomer, that is, the electric powercompany. To ensure maximumoperational surveillance and ease ofoperation, a basic system plan iscreated; the system's configurationis drawn up; the system's input-output information is collected;control logic diagrams arc prepared;and the logic of the plant .sautomation systems is examinedcarefully. Such integratedengineering efforts lead to thedevelopment of information andcontrol systems that are human-friendly.
Central Control Room Design Central Control Room Design Central Control Room Design 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.
9
GENERAL-PURPOREPLICA-TYPE SIMULATOR.
Simulator
SE COMPACT EWS
Initial training for newly assigned operators. Refresher training for experienced operators. Enhances operator's ability to carry out appropriateactions under emergency conditions. A suitable tool for testing/licensing operators. FULL SCALE SIMULATORFULL SCALE SIMULATORFULL SCALE SIMULATORFULL SCALE SIMULATOR ● Full-scale simulation of a particular power plant ● Actual-size control panels/desks identical with theplant being simulated (fully realistic operation environment)
● Detailed plant modeling ● DCS part is applied in either of two ways SEMI REPLICASEMI REPLICASEMI REPLICASEMI 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
Allow trainees to ascertain the characteristics of ageneral plant instead of a particular plant. Enables a flexible training schedule depending onindividual needs. Suitable for training new company personnel; not onlyoperator's but also technicians, engineers, and evenmanagers. GeneralGeneralGeneralGeneral----purpose compact EWSpurpose compact EWSpurpose compact EWSpurpose 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
D-EHC Digital Electro-Hydraulic Control SystemThe 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 FUNCTIONSMAIN TURBINE DMAIN TURBINE DMAIN TURBINE DMAIN TURBINE D----EHCEHCEHCEHC [Standard Functions][Standard Functions][Standard Functions][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 [Optional Functions][Optional Functions][Optional Functions][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
The D-EHC's display terminal CRTprovides comprehensive informationsto the operator for turbine control andmonitoring. A color printer (i.e., hardcopies) for use with the D-EHC'sdisplay terminal is available as anoption.
11
System Configuration
Vibration Monitor
Load Control
Vibration monitoring and Diagnostic system
● Abnormal conditions ...When an SYSTEM CONFIGURATION
SYSTEM FEATURES 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).
DETECTION OF ABNORMALDETECTION OF ABNORMALDETECTION OF ABNORMALDETECTION OF ABNORMAL VIBRATIONSVIBRATIONSVIBRATIONSVIBRATIONS ● 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
Advanced monitoring and logic-baseddiagnostic functions that have beendeveloped as a result of Toshiba'sdecades of international experience as a power plant supplier. ● Man-machine interface offers
maximum user-friendly features based on the high-resolution, full-color, graphic interface of personal computers equipped with the Microsoft Windows operating system.
● Advanced system offers simultaneous monitoring and diagnostic capacity for two power-plant units.
● Combined monitoring of both real-time 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), on- shaft sensors and pedestal sensors
● Interface compatibility with user's existing computer system and DCS.
power plants.
SYSTEM FUNCTIONS ANALYSIS AND DIAGNOSISANALYSIS AND DIAGNOSISANALYSIS AND DIAGNOSISANALYSIS AND DIAGNOSIS Expert computer and knowledgesystems are applied via the system's analysis and diagnostic functions, resulting from Toshiba's decades of experience 1) as a major internationalsupplier of power plants, as well as 2)an industry-leading manufacturer ofhigh-tech electronics. BALANCING SUPPORTBALANCING SUPPORTBALANCING SUPPORTBALANCING SUPPORT The system offers rapid and precisecalculations for optimal balancing ofthe power plant's components andsubsystems. ● Automatic calculation of shaftbalance 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.
MONITORINGMONITORINGMONITORINGMONITORING The system enables easy, intuitiveoperation of the turbine-generator'ssophisticated monitoring functions-despite any elaborate operatingconditions- by user of colorful, high-resolution operator terminals andprinter-output devices that provideimmediate access to real-time on-lineand off-line data (e.g., equipment'shistorical data). Monitoring via operator's terminalscan easily he switched between dual-shaft and eight-shaft monitoring. PROCESSING OF HISTORICAL PROCESSING OF HISTORICAL PROCESSING OF HISTORICAL PROCESSING OF HISTORICAL DATADATADATADATA Storage of all data recorded undervarious operating conditions is doneautomatically, enabling thoroughand 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.
*1: Assured compatibility with various computer and network systems.
*2: All necessary process parameters for plant-system monitoring and diagnosis arc input front the DCS via hardwired boards or by electronic transmission (optional)
*3: Vibration signals can also be input from aplant'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
Systems Contributing to Labor-Saving in Local Activities at Thermal Power Stations
While automation systems are beingwidely applied to operations at thermalpower stations, the introduction of suchsystems into local activities, such aspatrols and inspections, or special localoperations, has not progressed smoothlybecause these activities requireoperators and maintenance staff to dealwith the particular situations. In line with the needs of its customers,Toshiba has been making continuousefforts to develop systems thatcontribute to labor-saving in such localactivities at thermal power stations, andhas joined them as part of the series.
PatrolPatrolPatrolPatrol System (PATSYS) System (PATSYS) System (PATSYS) System (PATSYS) PATSYS is designed to support field work for: collecting, editing, andmanaging (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 equippedonly with hand-held terminals
● User-friendly interface ● Optical data transmission
Optical transmitting between hand-held terminals and personal computers
● Abundant editing functions Lists, charts, correlative analysis
● Patrol reliability 1) Alarm indicators 2) Patrol instructions
(e.g., equipment, items, courses)
Local Abnormal Condition Detection System
Abnormal Noise Detection by Sound ProcessinSteam-leak Detection by Image Processing
13
PATSYS Hardware Configuration
█ █ █ █ ● ●
g
█ Printer█ Printer█ Printer█ Printer ● used to print data lists, etc.
Personal computerPersonal computerPersonal computerPersonal computer for editing patrol historical datafor setting patrol courses/items
█ Han█ Han█ Han█ Han● used
█ Optical connecting adapter█ Optical connecting adapter█ Optical connecting adapter█ Optical connecting adapter
dddd----held terminalheld terminalheld terminalheld terminal to input patrol data
Download data
Upload data
With the growing number of aged unitsin thermal power stations and the needto adopt more severe operatingconditions to suit changeable loaddemand, the number of miscellaneoustasks that must be carried out by powerstation personnel related to operationand maintenance is steeply increasing.In order to maintain highly reliableoperation and prolong equipment life,computerization of these tasks isessential to ensure that they areeffectively executed. To satisfy these requirements, Toshibaprovides a computer system line-up known as the "intensive informationintegrated system" as part of itsadvanced information and controlsystem, the TOSMAP-GS series. Historical Data Storage and Historical Data Storage and Historical Data Storage and Historical Data Storage and Management SystemManagement SystemManagement SystemManagement System This system saves the real-time data of thermal power station as a historicaldatabase of operation. It is provided withvarious functions, such as monitoring, ofdeterioration analysis of plantcharacteristics, and performancemonitoring by calculation of heatbalance and efficiency Maintenance SystemMaintenance SystemMaintenance SystemMaintenance System This system saves specification andhistorical data for plant equipment tosupport the planning of periodical localpatrols and inspections.
Computer Systems for Operation and MaintenanceData Management in Thermal Power Stations
Intensive information integrated system components in power station computer system
14
Research and Development
Today's thermal plants must respond to the diverse and increasing needs of society's powerdemands. In addition to improved operation panels and central CRT displays to aid safetyand efficiency in plant operation, Toshiba researchers are also developing information andcontrol systems based on artificial intelligence (AI) and other new control theories.
NextNextNextNext----Generation Monitoring and Control SystemsGeneration Monitoring and Control SystemsGeneration Monitoring and Control SystemsGeneration Monitoring and Control Systems The use of a huge, wall-mounted process-flow screens, as well as high-resolution, full-color terminals facilitatesmaximum operator alertness and responsiveness to theplant's operating conditions. To realize a human-friendly operational environment, a scale model of thecentral control room is used to simulate all operator'svisibility by CCD camera provided in the mode.
Scale Model of Central Control Room
15
AlAlAlAl----Computer SupportComputer SupportComputer SupportComputer Support The growing diversity of energydemands requires that thermalpower plants be increasinglyflexible in their ability to adapt tothe need for frequent plant startsand stops. Toshiba has developedan artificial-intelligence operation-support system that significantlyassures rapid, accurate recovery ofplant operation in the event thatunplanned operational changes orfaults occur. The highly flexible yetautomatic responses of the AI-based system identify individual problemsbefore they become system faults,thereby enhancing reliability andefficiency of the operation.
Application of Advanced Control TheoriesApplication of Advanced Control TheoriesApplication of Advanced Control TheoriesApplication 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 systemsaccording to the specific characteristics of a plant's control objectives.Toshiba is constantly conducting research on these and other advancedcontrol systems.
Prototype Application of Advanced Controls
Operating Support System Display
Equipment Diagnosis System Display
16
Engineering Network Toshiba thermal power plants are built by the concerted efforts of itsThermal Power Plant Division and other divisions of ToshibaCorporation, as well as member companies of the Toshiba group. An extensive range of R&D efforts in thermal power engineering is acertain step toward realizing significant technological developmentsthat will constitute the thermal power-generation plants of tomorrow.
Head Office (Tsurumi) Keihin Product OperationHead Office (Shibaura)
17
Toshiba Thermal Power Plants Toshiba Thermal Power Plants Toshiba Thermal Power Plants Toshiba Thermal Power Plants Operating Around the WorldOperating Around the WorldOperating Around the WorldOperating Around the World Operating reliably under the world'swidely varying environmental conditions,a total of 203 Toshiba thermal generatorunits [total capacity as of Sept.1993:30,081 MW] are serving the industriesand homes of many nations around theworld.
Fuchu Works Hamakawasaki Works
18
TOSHIBATOSHIBATOSHIBATOSHIBA 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
3067-5 '99-6 C1
● For further information, please visit our website at http://www.toshiba.co.jp/index.htm and contact your nearest Toshiba LiaisonRepresentational Operations-Producer Goods.
● The data given in this brochure are subject to change without notice.