Description
CM15MD1-24H MITSUBISHI
Analog quantity control system(MCS),is the steam turbine generator set boiler,steam engine as a whole control system,furnace side MCS refers to the pot
Main furnace control system,boiler fuel quantity control system,feed risk control system,feed risk control system,start separator water level control system and steam
Temperature control system;Side MCS refers to deaerator pressure,water level regulation system,condenser water level regulation system;Closed water tank water level regulation system;high
,low water level control system and auxiliary steam pressure control system.MCS is responsible for water,steam,coal,oil,wind and smoke systems in the production process
Closed-loop automatic regulation of process variables and load control of the whole unit turbo-generator set.The sequential control system SCS is a part of the unit operation press
The thermal system or auxiliary mechanical equipment is divided into several local controls
System,according to the order specified in advance
Operation to achieve sequential control.The range of furnace side sequence control includes:blower,induced draft fan,primary fan,air preheater,furnace blowing
Grey system,etc.The scope of engine side sequence control system includes:turbine lubricating oil system,condensate pump,high feeding,deaerator,filling,vacuum pump,shaft seal system
Circulating water system,closed water system,steam pump,electric pump,internal cold water system,sealing oil system,rubber ball cleaning system,etc.Boiler furnace safety monitoring F
The SSS is capable of continuously and closely monitoring a large number of parameters and conditions of the combustion system under various operating modes such as normal operation of the boiler,startup and stop
To judge and calculate,when necessary to issue action instructions,through a variety of sequence control and interlocking devices,the relevant equipment in the combustion system(such as coal mill,
Coal feeder,oil gun,fire inspection cooling fan,etc.)Operate or deal with attempted accidents in strict accordance with a certain logical sequence to ensure the safety of the boiler.with
The furnace safety monitoring system also has the function of combustion management,which can meet the requirements of unit start and stop and increase and decrease the load through the control of each layer of the boiler burner
Load the need for continuous monitoring of boiler operating parameters and status,and automatically complete a variety of operations and protective actions,such as emergency cut off fuel supply and
Emergency shutdown to prevent further accident.Steam engine DEH system,its main function is to adjust the speed of the steam turbine,can complete the following functions:brake;
Automatically judge the thermal state;Select the boot mode;Speed up;3000rpm constant speed;Pseudosynchronous test of generator;Grid-connected with load;Lifting load;Valve switching
;Single valve/sequence valve switching;Regulating stage pressure feedback;Load feedback;Primary frequency modulation;CCS control;ATR thermal stress control;High load limitation;low
Load limitation;Valve position limitation;Main steam pressure limitation;Fast unloading load;Overspeed limit OPC;Conformity unbalance;Overspeed protection OSP;Injection test
;Overspeed test;Valve activity test;Valve on-line setting;Solenoid valve test;Control mode switching.Electrical ECS system,its main function is generator
Start-stop control and logic;Control and logic of each switch in the plant power system;Electrical system parameters and equipment status monitoring;Relay protection action
Situation,fault alarm and time sequence record.MEH system of steam pump group,its main function is to adjust the speed of steam pump group,can complete the following functions:brake
,speed up,fixed speed,CCS control,overspeed protection and other functions.Bypass control system A BCS system,the bypass system is a separate system,bypass control
Can complete the exact requirements of bypass operation,and can complete the safety function or quick on/quick off function,its basic components are divided into high side controller and low side control
System,mainly to achieve high and low side pressure control and temperature control.
Edit the main technical overview of the system in this section
※The system includes field control station(I/O station),data communication system,man-machine interface unit(operator station OPS,engineer station ENS),
Cabinet,power supply,etc.The system has an open architecture and can provide multiple layers of open data interface.
※The hardware system has high reliability,convenient maintenance and advanced technology in harsh industrial sites.The underlying Chinese software platform has powerful processing
function
And provides convenient configuration of complex control systems with the ability to independently develop dedicated advanced controls
Algorithm support capability;Easy to configure and easy to use.Multiple fieldbus standards are supported to accommodate future expansion needs.
※The design of the system adopts suitable redundancy configuration and self-diagnosis function from diagnosis to module level,with high reliability.Any component in the system fails
Obstacles will not affect the work of the whole system.※System parameters,alarm,self-diagnosis and other management functions are highly centralized on the CRT display
And printing on a printer,the control system is truly decentralized both functionally and physically.
※The utilization rate of the whole system is at least 99.9%;The system has an average trouble-free time of 100,000 hours,realizing nuclear power,thermal power,petrochemical and chemical
Complete monitoring of industry,metallurgy,building materials and many fields.※The concept of”domain”.The large control system is divided into several parts by high speed real-time redundant network
Relatively independent subsystem,a subsystem constitutes a domain,each domain share management and operation data,and each domain is a functional complete DCS
System,in order to better meet the user’s use.
