CN2054918U - All-in-one controller for gas turbine and generating of gas turbine power station - Google Patents

Abstract

The utility model relates to an all-in-one controller for gas turbine and generating of gas turbine power station, which is suitable to be the controller of various gas turbine power stations, and the utility model is particularly suitable for the power station where asks for few people or no one to manage. The all-in-one controller for gas turbine and generating of gas turbine power station is composed of a gas turbine set, accessory equipment and an all-in-one unit (including an action element, a measuring element, a standard industrial control interface, various adapting modules which are plugged in the standard industrial control interface and a central control computer). The central control computer controls and measures various system parameters and receives the input of the operating staff, and the software is used to decide; the set is synthetically controlled, and command can be harmonized, so the system runs under the optimum functional mode.

Description

All-in-one controller for gas turbine and generating of gas turbine power station

A kind of Mechano-electrically integrated control unit for combustion engine power station, it is suitable for doing the control device of various gas turbine or the horizontal power house of hi-tech, needing to be particularly suitable for unmanned or the use in the power station of personal management on a small quantity.

Do not have so far and end, the control of turbine power plant (or other gas turbine group) is " control of combustion machine " and reaches " Electric Machine Control " two parts, and they distinguish regulating and controlling separately, and output power changes with load variations.Because load is to change at any time, in order to adapt to load variations at any time, need each autotracking respectively to regulate, the system that has coordinates each with a cover cam mechanism and regulates parameter.Because of the complex structure of gas turbine, the technical requirement of governing loop is very high, thereby external minority manufacturer has controlled the technology of " combustion is transferred ".In recent years, " combustion is transferred " begins to have adopted single card microcomputer, and for example the combustion of the MK-IV of GE company is transferred and just has been to use three 80C86 single card microcomputers.Be that electricity is transferred or the combustion accent all is to finish engine by Hydrauservo System to regulate operation.The controlling unit of unit is a lot of, the method of controlling of using instead is that each unit is set a controlling value separately, whenever load or change of external conditions cause when departing from this value, monotone system regulating and controlling corresponding site action separately, the adjusting actuator makes it the equilibrium state that reaches new.Because each governing loop is uncorrelated mutually; can not integral body when running into complex situations coordinated manipulation at random; thereby can not accomplish whole optimum condition control; running into complicated situation can only operate manually; coordinate each operation link by the people according to actual conditions at that time, otherwise unit might make unit " protection is shut down " occur because of a certain operating value reaches maximum permissible value.Simultaneously, because control disperses, when many units were formed the power station, the coordination between its each unit also needed to adjust complicated and difficult with manually carrying out.Because switch board need be put into the pulpit, the line between switch board and gas turbine and the generator is a lot, controls with the hard logic method, and its intersection can be counted out and is directly proportional with the product of incoming line and output line.Quantity is with the anxious huge increase of the complexity degree of one-tenth of control, reliability decrease.Both increased difficulty, also strengthened the workload of the dismounting when move in the power station to maintenance.

The purpose of this utility model is the machine integrated control device of turbine power plant of a kind of electromechanical integration of invention.It unifies control to gas turbine, generator and other utility appliance, simplifies the pulpit structure, improves control accuracy.

Structured flowchart of the present utility model as shown in Figure 1, it has gas turbine, the control actuating component group (3) of generator and utility appliance, systematic parameter measuring sensor group (4) and central control computer (5), it is characterized in that: standard industrial control (6) is nearby arranged in the gas turbine generator group, each executive component in the control actuating component group (3) all has an execution adaptation module (7) that inserts in the standard industrial control (6) to be attached thereto, form a control execution unit, each measuring sensor in the parameter measurement element group (4) all has a measurement adaptation module (8) that inserts in the standard industrial control (6) to be attached thereto, form one and measure performance element, standard industrial control (6) links to each other with central control computer (5) by serial communication interface.

In accompanying drawing 1, also have gas turbine generator group (1) and utility appliance (2).

The utility model adopts by an executive component joins a control execution unit of execution adaptation module formation of inserting in the industrial control interface (RTU) (6), and a specific job is only finished in this unit.As the power rating control execution unit of gas turbine, it only finishes the control to gas turbine fuel metering valve size, and the air inflow control module of gas turbine is only regulated the guide vane in the air intake duct.Equally, join one by a measuring sensor and insert RTU(6) in the measurement adaptation module constitute a systematic parameter measuring unit, each measuring unit is only finished the measurement of a specific physical quantity of certain in the system.Just just add as the combustion turbine exhaustion temperature measurement unit and to insert RTU(6 by a thermopair putting into exhaust duct) a mould/number conversion measure adaptation module and form, they all only finish single basic function.Central control computer (5) is by the logical choosing instruction in the different address of serial communication interface output, pass through RTU(6) different suitable module (7) of control and the measurement adaptation module (8) of gating, and then computing machine can send order allow in the control actuating component group (3) the executive component action or receive digitizing that the measuring sensor in the measuring sensor group (4) transmits the physical quantity of surveying, and all control strategies all are decided by software.Computing machine is made a strategic decision with software by the systematic parameter that records and operating personnel's input, sends control commands corresponding.It can measure a lot of systematic parameters (as long as insert corresponding measuring sensor and measure adaptation module on the one hand, just can expand measurement range, and can insert and measure) as if the such measuring unit of using electricity system parameter, on the other hand, as if its software decision-making degree can be the program of expert system.With software gas turbine and generator are carried out Comprehensive Control, can coordinate the relation between gas turbine and the generator, can significantly reduce that a certain operation individual event reaches maximum permissible value and situation that " protection shut down " takes place.In addition, the fast operation of computing machine, the systematic parameter of measurement is many, can control with complicated, accurate decision policy, and very high control accuracy is arranged, and can make system operate in optimum Working.Owing to be placed in the just middle inner control computing machine (5) in the pulpit, RTU(6) be positioned near the unit nearby, RTU(6) with between the central control computer (5) have only a serial communication cable to link to each other, the dismounting the during resettlement of pulpit is very convenient, also safeguards easily.

All devices of the present utility model all can use standardized product, all is solid-state module as various control actuating component, measuring sensor and corresponding adaptation module.As long as connect the control actuating component and the measuring sensor of different size, and revise Control Software slightly, power station that just can adaptive various scales, and can only just can carry out team control to many gas turbine generator groups (1) with the number of expansion RTU and the number of control execution unit and parameter measurement unit.

The utility model can be controlled same gas turbine generator group (1) with the identical device of two covers.One covering device is in major state, another set of device is in the monitoring state, output result to stream oriented device compares by comparer, if when being in the device of master control operation and breaking down, can carry out online switching, allow control device in the monitoring state transfer the operation of master control attitude to, and out of order device is detected and keeps in repair.Generally speaking, failed equipment takes place mostly is soft fault, need only reset and reset and can get rid of.Use duplex running can improve the operational reliability of whole unit greatly.

RTU(6 in the utility model) be positioned over unit (1) nearby nearby, each control actuating component and the measuring sensor RTU(6 that all only goes between) locate.General RTU(6) 16 or 32 slots are arranged, if slot count is not enough, can make the corresponding minimizing of merge point like this with a plurality of RTU series connection, the control line also can be simplified.

Analog to digital conversion adaptation module (2) in the utility model can be a form as shown in Figure 2.It is made up of A/D conversion chip ADC0809 and control chip 8031 and other auxiliary logic chip.0809 finishes the mould/transformation of variables by the analog signals of measuring sensor input, and controls with 0831 pair 0809, and this module is with in the TP μ P-16 standard plug insertion RTU slot.

Claims (1)

1, the machine integrated control device of a kind of combustion engine power station, it has gas turbine, the control actuating component group (3) of generator and utility appliance, systematic parameter measuring sensor group (4) and central control computer (5), it is characterized in that: standard industrial control (6) is nearby arranged in the gas turbine generator group, each executive component in the control actuating component group (3) all has an execution adaptation module (7) that inserts in the standard industrial control (6) to be attached thereto, form a control execution unit, each measuring sensor in the parameter measurement element group (4) all has a measurement adaptation module (8) that inserts in the standard industrial control (6) to be attached thereto, form one and measure performance element, standard industrial control (6) links to each other with central control computer (5) by serial communication interface.

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