CN219452196U - Multifunctional coordinated control optimizing system for 660MW unit - Google Patents

Abstract

The utility model discloses a multifunctional coordinated control optimizing system of a 660MW unit, which comprises a coordinated controller CCS, a boiler combustion system ACC, a temperature controller ATC, an automatic generating capacity control system AGC and a steam turbine control system DEH, wherein the boiler combustion system ACC is electrically connected with a controller in a boiler, the coordinated controller CCS is electrically connected with the boiler combustion system ACC and the steam turbine control system DEH, the steam turbine control system DEH is electrically connected with a steam turbine, the steam turbine drives a generator to rotate to realize power generation, the temperature controller ATC is electrically connected with the coordinated controller CCS, the temperature controller ATC is connected with a plurality of temperature sensors and a fan set, and the temperature sensors are used for sensing the temperature of the boiler, the steam turbine and the generator and have the technical characteristics of simple structure, multiple data coordination work and the like.

Description

Multifunctional coordinated control optimizing system for 660MW unit

Technical Field

The utility model relates to a coordination control system, in particular to a multifunctional coordination control optimizing system of a 660MW unit, and belongs to the field of power generation.

Background

The electric power spot market is put into operation in a whole-area power plant, comprehensive examination is carried out on the performance indexes of the power generation unit related to the grid from operation management, higher requirements are provided for parameters such as AGC regulation speed and AGC regulation precision of the unit, corresponding control strategies are adopted to optimize and improve the characteristics of the unit, the high-performance indexes of the power grid are served, the stability of the parameters such as pressure and steam temperature of the unit is considered, the safe operation of the unit is ensured, the maximum potential of the unit is excavated, and the unit can be better adapted to implementation examination of two rules.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides the 660MW unit multifunctional coordination control optimizing system with the technical characteristics of simple structure, multiple data coordination work and the like.

In order to achieve the above purpose, the present utility model is realized by the following technical scheme:

the multifunctional coordination control optimizing system of the 660MW unit comprises a coordination controller CCS, a boiler combustion system ACC, a temperature controller ATC, an automatic generating capacity control system AGC and a turbine control system DEH, wherein the boiler combustion system ACC is electrically connected with controllers in a boiler, the coordination controller CCS is electrically connected with the boiler combustion system ACC and the turbine control system DEH, the turbine control system DEH is electrically connected with a turbine, the turbine drives a generator to rotate to generate electricity, the temperature controller ATC is electrically connected with the coordination controller CCS, the temperature controller ATC is connected with a plurality of temperature sensors and a fan set, and the temperature sensors are used for sensing the temperatures of the boiler, the turbine and the generator.

Preferably, the boiler is connected to the inlet end of the steam turbine through a steam pipeline, a pneumatic control valve is connected to the steam pipeline, and the steam turbine control system DEH is electrically connected with the pneumatic control valve.

Preferably, the steam turbine is connected with a condenser, the internal inlet end of the condenser is connected with a water inlet and cooling pipeline, and the internal outlet end of the condenser is connected with a water outlet and cooling pipeline.

Preferably, the boiler combustion system ACC, the automatic power generation amount control system AGC and the steam turbine control system DEH are all connected to the same network, and the network is connected with a control platform.

Preferably, the control platform comprises a computer and a display screen.

The beneficial effects are that: the intelligent control system has the advantages that the structure is simple, the multiple systems cooperate, the intervention through the multiple systems can be realized based on the technical structural design of the intelligent control system, and the adjustment of multiple-input multiple-output variables is realized based on the manual operation or the intelligent AI technology so as to achieve the effect that the efficiency of the boiler can be close to the optimal.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to the following examples.

The embodiment of the 660MW unit multifunctional coordination control optimizing system is shown in fig. 1, and the 660MW unit multifunctional coordination control optimizing system comprises a coordination controller CCS, a boiler combustion system ACC, a temperature controller ATC, an automatic power generation control system AGC and a turbine control system DEH, wherein the boiler combustion system ACC is electrically connected with a controller in a boiler, the coordination controller CCS is electrically connected with the boiler combustion system ACC and the turbine control system DEH, the turbine control system DEH is electrically connected with a turbine, the turbine drives a generator to rotate to generate electricity, the temperature controller ATC is electrically connected with the coordination controller CCS, the temperature controller ATC is connected with a plurality of temperature sensors and a fan set, and the temperature sensors are used for sensing temperatures of the boiler, the turbine and the generator.

The following explains the functions of the coordination controller CCS, the boiler combustion system ACC, the temperature controller ATC, the automatic power generation amount control system AGC, and the steam turbine control system DEH. The coordination controller CCS, the boiler combustion system ACC, the temperature controller ATC, the automatic power generation control system AGC and the steam turbine control system DEH related in the application are all mature prior art in the power plant, and the system structure and the system layout of the application are not limited.

The coordination controller CCS coordinates the working states of the steam turbine and the boiler through the control loop, and simultaneously gives out instructions to the boiler combustion system ACC and the steam turbine control system DEH so as to achieve the aim of quickly responding to load change, exert the frequency modulation and peak regulation capability of the unit as much as possible, and stabilize the operation parameters.

The boiler combustion system ACC can adjust the feeding amount and the combustion air distribution, and finally the evaporation amount and the combustion state are stable.

The temperature controller ATC controls the fan set to adjust the temperature to be kept at a set value.

The automatic generating capacity control system AGC controls the power of the generator, and maintains the frequency to be a rated value. The automatic control of the power of the generator is realized by an automatic control and adjustment device of the unit.

The turbine control system DEH consists of two parts, namely a 1.EH system (hydraulic actuator); deh control apparatus (computer control section).

1) The EH system is an execution system of the DEH system, and the DEH control device is a command center of the DEH system. The EH system mainly comprises an oil supply device (an oil tank, an oil pump and an oil pipeline), a safety system (AST, an OPC system and a diaphragm valve), an oil engine (a main valve, a high-pressure regulating valve, a medium-pressure main valve, a medium-pressure regulating valve oil engine) and the like. The oil supply device provides stable high-pressure power oil for the system required by the action of the oil motor, the safety system provides a loop for enabling the oil motor to be rapidly closed, and the stroke of the oil motor is controlled by a servo valve. The servo valve receives the DEH opening instruction to enable the oil motor to generate displacement and drive a valve connected to the oil motor to move, so that air inlet of the steam turbine is controlled.

2) The DEH control system typically includes four control cabinets, an operator station and an engineer station. An operator station is a human-machine interface through which an operator operates the DEH to monitor the operation of the system.

The turbine control system DEH collects turbine state data, such as brake hanging, grid connection, turning gear, bypass, main steam pressure, regulation stage pressure, power, rotating speed, vacuum and the like, and is convenient for manual or intelligent operation.

In the power industry, an automatic generating capacity control system AGC is one of paid auxiliary services provided by a grid-connected power plant, a generator set tracks a command (signal) issued by a power dispatching transaction mechanism in a specified output adjustment range, and the generated output is adjusted in real time according to a certain adjustment rate so as to meet the service of the power system frequency and the power control requirement of a tie line, or Automatic Generating Control (AGC) carries out secondary adjustment on the output of a part of the generator set of the power grid so as to meet the control target requirement. The software program (signal) is not limited in the application, the program signal for designing the circuit structure and the electrical element is not limited, and the design can be changed according to actual conditions, so that the system is not an essential feature of the application, and the application aims at providing a multifunctional coordinated system.

Based on the structural technical scheme of the application, the description is made on the signal flow of the application, but the description is not to be understood as the design of the program, and specifically as follows:

the coordination controller CCS receives signals from the automatic power generation control system AGC, outputs boiler load signals to the boiler combustion system ACC, and outputs turbine load signals to the turbine control system DEH, and the boiler combustion system ACC receives signals from the coordination controller CCS, and can calculate optimal air/fuel ratios by using artificial intelligence AI technology (such as model predictive control technology), and output these ratios to the fuel and air control loop on line. The temperature controller ATC adopts an artificial intelligence AI technology (such as a model predictive control technology) to calculate and improve the stability of the superheated steam temperature of the boiler through the acquired data, adopts temperature control to reduce the fluctuation range of the steam temperature and improve the regulation quality, and the set point of the steam temperature can be set at a relatively high value.

Meanwhile, when the AGC signal of the automatic generating capacity control system enters a sub-steady state working condition (the power generation system runs stably), the main control parameters of the boiler and the main control parameters of the steam turbine are corrected in time by adopting the artificial intelligence AI, so that the disturbance quantity such as the coal quantity and the air quantity is greatly weakened, the stability of each running parameter of the unit is ensured, and the running safety and stability of the unit are improved.

The system has the advantages that the system is simple in structure, the multi-system cooperation can be realized through the intervention of a plurality of systems, the optimal control of the multi-input multi-output variable is realized, the problems of strong coupling and delay of controlled objects of the coal-fired power generator unit are effectively solved, the optimal parameters can be obtained based on manual operation or under the intelligent AI technology in the dynamic optimization process of the combustion control system through acquiring multi-path data, and the efficiency of the boiler is close to optimal on the premise of ensuring the safe operation of the boiler and the emission of pollutant gas to reach the standard.

In the preferred embodiment, the boiler is connected at the inlet end of the steam turbine through a steam pipeline, a pneumatic regulating valve is connected to the steam pipeline, a steam turbine control system DEH is electrically connected with the pneumatic regulating valve, the steam turbine is dynamically regulated by regulating the input of steam quantity, the steam turbine is connected with a condenser, the inner inlet end of the condenser is connected with a water inlet pipeline, the inner outlet end of the condenser is connected with a water outlet pipeline, a boiler combustion system ACC, an automatic generating capacity control system AGC and a steam turbine control system DEH are all connected on the same network, so that the data inside the factory can be shared in real time, the network is connected with a control platform, and the control platform comprises a computer, a display screen, so that the manual control operation and the real-time display of the data are facilitated.

Finally, it should be noted that the utility model is not limited to the above embodiments, but that many variants are possible. All modifications directly derived or suggested to one skilled in the art from the present disclosure should be considered as being within the scope of the present utility model.

Claims (5)

1.660MW unit multifunctional coordination control optimizing system, which is characterized in that the system comprises: the automatic power generation system comprises a coordination controller CCS, a boiler combustion system ACC, a temperature controller ATC, an automatic power generation amount control system AGC and a turbine control system DEH, wherein the boiler combustion system ACC is electrically connected with a controller in a boiler, the coordination controller CCS is electrically connected with the boiler combustion system ACC and the turbine control system DEH, the turbine control system DEH is electrically connected with a turbine, the turbine drives a generator to rotate to realize power generation, the temperature controller ATC is electrically connected with the coordination controller CCS, the temperature controller ATC is connected with a plurality of temperature sensors and a fan set, and the temperature sensors are used for sensing the temperatures of the boiler, the turbine and the generator.

2. The 660MW unit multifunctional coordinated control optimizing system according to claim 1, wherein the boiler is connected to an inlet end of a steam turbine through a steam pipeline, a pneumatic control valve is connected to the steam pipeline, and the steam turbine control system DEH is electrically connected to the pneumatic control valve.

3. The 660MW unit multifunctional coordinated control optimizing system according to claim 1 or 2, wherein the steam turbine is connected with a condenser, an internal inlet end of the condenser is connected with a water inlet pipeline, and an internal outlet end of the condenser is connected with a water outlet pipeline.

4. The 660MW unit multifunctional coordination control optimizing system according to claim 1, wherein the boiler combustion system ACC, the automatic power generation control system AGC and the steam turbine control system DEH are all connected to the same network, and the network is connected with a control platform.

5. The 660MW unit multifunctional coordination control optimizing system according to claim 4, wherein the control platform comprises a computer and a display screen.