CN114922701A - Three-furnace two-machine main pipe system biomass power plant steam turbine pressure and power control system - Google Patents
Three-furnace two-machine main pipe system biomass power plant steam turbine pressure and power control system Download PDFInfo
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- CN114922701A CN114922701A CN202210575776.0A CN202210575776A CN114922701A CN 114922701 A CN114922701 A CN 114922701A CN 202210575776 A CN202210575776 A CN 202210575776A CN 114922701 A CN114922701 A CN 114922701A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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Abstract
A three-furnace two-machine main pipe system biomass power plant steam turbine pressure and power control system relates to the field of biomass power plant steam turbine control and aims to meet the requirements that a steam turbine unit stably operates under set main steam pressure and a power plant meets the load control requirement of a power grid. The main steam pressure control module is used for controlling the generator set to stably run under the set main steam pressure; the motor power control module is used for controlling the output power value of the generator set to maintain stable operation under the power set value; the beneficial effects are that: the pressure and the power of the two turbo-generator units are respectively adjusted, so that the boiler can stably burn, and meanwhile, the power plant can meet the load control requirement of a power grid.
Description
Technical Field
The invention relates to the field of steam turbine control of biomass power plants.
Background
For a biomass power plant configured by a three-furnace two-machine main pipe system, because the biomass fuel has low combustion value, small density, large particles, much moisture and more impurities, the biomass fuel is extremely unstable during combustion and has great influence on the stable combustion of the boiler, so the boiler is difficult to adopt a pressure control mode, and meanwhile, the control mode of the boiler cannot meet the requirements of the stable combustion of the boiler and the load control of a unit for quickly responding to a power grid.
Disclosure of Invention
The invention aims to meet the requirements of stable operation of a steam turbine set under a set main steam pressure and load control of a power grid of a power plant, and provides a pressure and power control system of a three-furnace two-machine main pipe biomass power plant steam turbine.
The pressure and power control system of the steam turbine of the three-furnace two-machine main pipe biomass power plant comprises a main steam pressure control module and a motor power control module;
the main steam pressure control module is used for controlling the generator set to stably run under the set main steam pressure;
the main steam pressure control module comprises an operator station I, a first DEH controller, a first acquisition module and a first sensor;
the first sensor is used for acquiring the actual main steam pressure value of the No. 1 turbonator of the generator unit and converting the actual main steam pressure value into a first sensing signal;
the first DEH controller is used for receiving a first sensing signal through the first acquisition module, converting the first sensing signal into an actual main steam pressure value and converting the actual main steam pressure value into a first display signal; the system is also used for receiving a main steam pressure set value, generating a first control instruction according to the main steam pressure set value and an actual main steam pressure value, and adjusting a speed regulation valve of the No. 1 steam turbine generator according to the first control instruction;
the first operator station is used for receiving the first display signal and converting the first display signal into an actual main steam pressure value for displaying; also used for outputting the main steam pressure set value;
the motor power control module is used for controlling the output power value of the generator set to maintain stable operation under the power set value;
the motor power control module comprises a second operator station, a second DEH controller, a second acquisition module and a second sensor;
the second sensor is used for acquiring the actual power value of the No. 2 steam turbine generator of the generator set and converting the actual power value into a second sensing signal;
the second DEH controller is used for receiving a second sensing signal through the second acquisition module, converting the second sensing signal into an actual power value and converting the actual power value into a second display signal; the system is also used for receiving a power set value, generating a second control instruction according to the power set value and the actual power value, and adjusting a speed regulation valve of the No. 2 steam turbine generator according to the second control instruction;
the second operator station is used for receiving a second display signal and converting the second display signal into an actual main steam pressure value for displaying; but also for the output power set point.
The beneficial effects of the invention are: the control system can realize the stable operation of the generator set under the set main steam pressure, and simultaneously, the power plant can meet the requirement of load control of a power grid.
Drawings
FIG. 1 is a block diagram of a pressure and power control system of a steam turbine of a three-furnace two-machine main-pipe biomass power plant according to a first embodiment;
FIG. 2 is a block diagram of the main steam pressure control loop of the first DEH controller in accordance with a second embodiment;
fig. 3 is a block diagram of a power control loop of a second DEH controller according to a third embodiment.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1, and the pressure and power control system of the steam turbine of the three-furnace two-machine main-pipe biomass power plant in the embodiment comprises a main steam pressure control module and a motor power control module;
the main steam pressure control module is used for controlling the generator set 9 to stably run under the set main steam pressure;
the main steam pressure control module comprises an operator station 1, a first DEH controller 2, a first acquisition module 3 and a first sensor 4;
the first sensor 4 is used for acquiring an actual main steam pressure value of the No. 1 steam turbine generator of the generator set 9 and converting the actual main steam pressure value into a first sensing signal;
the first DEH controller 2 is used for receiving the first sensing signal through the first acquisition module 3, converting the first sensing signal into an actual main steam pressure value, and simultaneously converting the actual main steam pressure value into a first display signal; the system is also used for receiving a main steam pressure set value, generating a first control instruction according to the main steam pressure set value and an actual main steam pressure value, and adjusting a speed regulation valve of the No. 1 steam turbine generator according to the first control instruction;
the first operator station 1 is used for receiving a first display signal and converting the first display signal into an actual main steam pressure value for displaying; also used for outputting the main steam pressure set value;
the motor power control module is used for controlling the output power value of the generator set 9 to maintain stable operation under the power set value;
the motor power control module comprises an operator station II 5, a second DEH controller 6, a second acquisition module 7 and a second sensor 8;
the second sensor 8 is used for acquiring the actual power value of the No. 2 steam turbine generator of the generator unit 9 and converting the actual power value into a second sensing signal;
the second DEH controller 6 is configured to receive a second sensing signal through the second acquisition module 7, convert the second sensing signal into an actual power value, and convert the actual power value into a second display signal; the system is also used for receiving a power set value, generating a second control instruction according to the power set value and the actual power value, and adjusting a speed regulation valve of the No. 2 steam turbine generator according to the second control instruction;
the second operator station 5 is used for receiving a second display signal and converting the second display signal into an actual main steam pressure value for displaying; but also to the output power set point.
In the embodiment, when the load of the power grid is changed, the boiler master control sends out a control action of load change, so that the main steam pressure of the generator set 9 is changed, the control system of the No. 1 steam turbine compares the actual value of the main steam pressure with the set value of the main steam pressure, and the comparison result is calculated by the PID regulator and then sends a control instruction to the speed regulation valve, so that the main steam pressure is recovered to the set value; the pressure control mode can realize that the generator set 9 can stably run under the set main steam pressure, but can not meet the requirement of a power grid for quick response of the generator set to the change of the grid frequency, in order to meet the requirement, a control system of the No. 2 steam turbine compares power with a power set value, and a comparison result is calculated by a PID (proportion integration differentiation) regulator and then sends a control instruction to a speed regulation valve, so that the power load of the generator set is consistent with the requirement of the power grid load; and the requirement of the power grid on 9-speed response network frequency change of the generator set is met. The control system of the steam turbine generator unit 9 comprises monitoring analog quantity and digital switching value; respectively connecting the analog quantity signal and the digital switching value signal to a first DEH controller 2 and a second DEH controller 6 to obtain corresponding signal processing results; the first operator station 1 and the second operator station 5 receive the module processing results and respectively send control quantities to corresponding devices controlled by the first DEH controller 2 and the second DEH controller 6 according to the operation requirements of the steam turbine generator unit. The monitoring analog quantity and the digital switching quantity of the control system of the steam turbine generator unit 9 are specifically as follows: a main steam pressure signal of the steam turbine, a power signal of the steam turbine and an opening signal of the valve.
The second embodiment is as follows: in the present embodiment, the first DEH controller 2 generates a first control command according to the main steam pressure set value and the actual main steam pressure value, and a specific method for adjusting the speed regulation throttle of the number 1 steam turbine generator according to the first control command is as follows:
and comparing the actual main steam pressure value with the main steam pressure set value, calculating the comparison result by a pressure PID regulator 2-1 to generate a calculated value, converting the generated calculated value into an opening instruction of a regulating valve through a flow curve 2-2 of the regulating valve, and controlling the opening of a regulating valve 2-3 to recover the actual main steam pressure value to the main steam set value.
The third concrete implementation mode: in the present embodiment, the specific method for generating the second control command according to the power set value and the actual power value and adjusting the speed regulation throttle of the No. 2 steam turbine generator according to the second control command includes:
comparing the actual power value with the power set value for the first time to generate a first comparison result, comparing the first comparison result with the primary frequency modulation load again to generate a second comparison result, calculating the second comparison result through a power PID regulator 6-1 to generate a calculation value, comparing the generated calculation value with the primary frequency modulation load for the third time to generate a third comparison result, converting the third comparison result into an opening instruction of a regulating valve through a regulating valve flow curve 6-2, and controlling the opening of a regulating valve 6-3 to recover the actual power value of the main generator to the power set value.
Claims (3)
1. The system is characterized in that the control system comprises a main steam pressure control module and a motor power control module;
the main steam pressure control module is used for controlling the generator set (9) to stably run under the set main steam pressure;
the main steam pressure control module comprises an operator station I (1), a first DEH controller (2), a first acquisition module (3) and a first sensor (4);
the first sensor (4) is used for acquiring the actual main steam pressure value of the No. 1 steam turbine generator of the generator set (9) and converting the actual main steam pressure value into a first sensing signal;
the first DEH controller (2) is used for receiving a first sensing signal through the first acquisition module (3), converting the first sensing signal into an actual main steam pressure value, and converting the actual main steam pressure value into a first display signal; the system is also used for receiving a main steam pressure set value, generating a first control instruction according to the main steam pressure set value and an actual main steam pressure value, and adjusting a speed regulation valve of the No. 1 steam turbine generator according to the first control instruction;
the first operator station (1) is used for receiving a first display signal and converting the first display signal into an actual main steam pressure value for displaying; the main steam pressure set value is also output;
the motor power control module is used for controlling the output power value of the generator set (9) to maintain stable operation under a power set value;
the motor power control module comprises a second operator station (5), a second DEH controller (6), a second acquisition module (7) and a second sensor (8);
the second sensor (8) is used for acquiring the actual power value of the No. 2 steam turbine generator of the generator set (9) and converting the actual power value into a second sensing signal;
the second DEH controller (6) is used for receiving a second sensing signal through the second acquisition module (7), converting the second sensing signal into an actual power value and converting the actual power value into a second display signal; the system is also used for receiving a power set value, generating a second control instruction according to the power set value and the actual power value, and adjusting a speed regulation valve of the No. 2 steam turbine generator according to the second control instruction;
the second operator station (5) is used for receiving a second display signal and converting the second display signal into an actual main steam pressure value for displaying; but also for the output power set point.
2. The pressure and power control system of the steam turbine of the three-furnace two-machine main-pipe biomass power plant according to claim 1, wherein the first DEH controller (2) generates a first control command according to the main steam pressure set value and the actual main steam pressure value, and a specific method for adjusting the speed regulation valve of the No. 1 steam turbine generator according to the first control command comprises the following steps:
and comparing the actual main steam pressure value with the main steam pressure set value, calculating the comparison result through a pressure PID regulator (2-1) to generate a calculation value, converting the generated calculation value into a regulating valve opening instruction through a regulating valve flow curve (2-2), and controlling the opening of a regulating valve (2-3) to restore the actual main steam pressure value to the main steam set value.
3. The pressure and power control system of the steam turbine of the three-furnace two-machine header control biomass power plant according to claim 1, wherein a specific method for generating a second control command according to the power set value and the actual power value and adjusting the speed regulation valve of the No. 2 steam turbine generator according to the second control command comprises the following steps:
and comparing the actual power value with the power set value for the first time to generate a first comparison result, comparing the first comparison result with the primary frequency modulation load again to generate a second comparison result, calculating the second comparison result through a power PID regulator (6-1) to generate a calculation value, comparing the generated calculation value with the primary frequency modulation load for the third time to generate a third comparison result, converting the third comparison result into an opening instruction of a regulating valve through a regulating valve flow curve (6-2), and controlling the opening of the regulating valve (6-3) to recover the actual power value of the main generator to the power set value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210575776.0A CN114922701B (en) | 2022-05-25 | 2022-05-25 | Pressure and power control system of three-furnace two-machine main pipe biomass power plant steam turbine |
| PCT/CN2022/111659 WO2023226202A1 (en) | 2022-05-25 | 2022-08-11 | System for controlling pressure and power of steam turbine of three-boiler two-turbine header system biomass power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210575776.0A CN114922701B (en) | 2022-05-25 | 2022-05-25 | Pressure and power control system of three-furnace two-machine main pipe biomass power plant steam turbine |
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| CN114922701A true CN114922701A (en) | 2022-08-19 |
| CN114922701B CN114922701B (en) | 2023-09-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023226202A1 (en) * | 2022-05-25 | 2023-11-30 | 哈尔滨汽轮机厂有限责任公司 | System for controlling pressure and power of steam turbine of three-boiler two-turbine header system biomass power plant |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4448026A (en) * | 1981-09-25 | 1984-05-15 | Westinghouse Electric Corp. | Turbine high pressure bypass pressure control system |
| JP2004316998A (en) * | 2003-04-15 | 2004-11-11 | Toshiba Corp | Boiler control device |
| US20070028616A1 (en) * | 2005-07-29 | 2007-02-08 | Ansaldo Energia S.P.A. | Method and system for operative reconversion of pairs of pre-existing steam turbo-units |
| CN102707692A (en) * | 2012-05-31 | 2012-10-03 | 杭州和利时自动化有限公司 | Power plant, method and system for controlling garbage incineration power plant equipment based on DCS (Distributed Control System) |
| CN102748080A (en) * | 2012-07-03 | 2012-10-24 | 山东电力研究院 | Main steam pressure change-based thermal power generating unit load control method |
| CN107769273A (en) * | 2017-11-03 | 2018-03-06 | 杭州澎康自动化科技有限公司 | A kind of steam turbine load distribution control method and system |
| CN109488394A (en) * | 2018-10-19 | 2019-03-19 | 哈尔滨汽轮机厂有限责任公司 | The control method that million nuclear steam turbine control system machine heaps are coordinated |
| CN110578565A (en) * | 2019-08-23 | 2019-12-17 | 广西电网有限责任公司电力科学研究院 | system and method for coordinated peak regulation and heat supply of distributed combined cycle generator set |
| CN113431651A (en) * | 2021-06-29 | 2021-09-24 | 西安热工研究院有限公司 | Low-load operation system with one furnace and two machines |
| CN113756898A (en) * | 2021-09-06 | 2021-12-07 | 贵州电网有限责任公司 | Steam turbine constant-speed standby operation method for boiler shutdown of thermal power plant |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410860B (en) * | 2015-07-31 | 2019-04-23 | 宝山钢铁股份有限公司 | Multi fuel multifuel combustion Once-through Boiler generating set primary frequency regulation method |
| CN105888743B (en) * | 2016-04-12 | 2017-11-07 | 国网上海市电力公司 | A kind of supercritical unit DEH sides primary frequency modulation method |
| CN109322714B (en) * | 2018-09-30 | 2021-07-06 | 西安陕鼓动力股份有限公司 | Load control method of steam turbine in variable-frequency rotation-speed-increasing process of SHRT unit |
| CN113006885A (en) * | 2021-03-23 | 2021-06-22 | 攀钢集团西昌钢钒有限公司 | Constant-pressure operation control method for steam turbine generator unit |
| CN114922701B (en) * | 2022-05-25 | 2023-09-05 | 哈尔滨汽轮机厂有限责任公司 | Pressure and power control system of three-furnace two-machine main pipe biomass power plant steam turbine |
-
2022
- 2022-05-25 CN CN202210575776.0A patent/CN114922701B/en active Active
- 2022-08-11 WO PCT/CN2022/111659 patent/WO2023226202A1/en unknown
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4448026A (en) * | 1981-09-25 | 1984-05-15 | Westinghouse Electric Corp. | Turbine high pressure bypass pressure control system |
| JP2004316998A (en) * | 2003-04-15 | 2004-11-11 | Toshiba Corp | Boiler control device |
| US20070028616A1 (en) * | 2005-07-29 | 2007-02-08 | Ansaldo Energia S.P.A. | Method and system for operative reconversion of pairs of pre-existing steam turbo-units |
| CN102707692A (en) * | 2012-05-31 | 2012-10-03 | 杭州和利时自动化有限公司 | Power plant, method and system for controlling garbage incineration power plant equipment based on DCS (Distributed Control System) |
| CN102748080A (en) * | 2012-07-03 | 2012-10-24 | 山东电力研究院 | Main steam pressure change-based thermal power generating unit load control method |
| CN107769273A (en) * | 2017-11-03 | 2018-03-06 | 杭州澎康自动化科技有限公司 | A kind of steam turbine load distribution control method and system |
| CN109488394A (en) * | 2018-10-19 | 2019-03-19 | 哈尔滨汽轮机厂有限责任公司 | The control method that million nuclear steam turbine control system machine heaps are coordinated |
| CN110578565A (en) * | 2019-08-23 | 2019-12-17 | 广西电网有限责任公司电力科学研究院 | system and method for coordinated peak regulation and heat supply of distributed combined cycle generator set |
| CN113431651A (en) * | 2021-06-29 | 2021-09-24 | 西安热工研究院有限公司 | Low-load operation system with one furnace and two machines |
| CN113756898A (en) * | 2021-09-06 | 2021-12-07 | 贵州电网有限责任公司 | Steam turbine constant-speed standby operation method for boiler shutdown of thermal power plant |
Non-Patent Citations (3)
| Title |
|---|
| 孙文杰, 李海松, 何方: "600 MW汽轮机DEH电液调节系统", 西北电力技术, no. 05, pages 22 - 35 * |
| 朱洪军;周佐;: "母管制锅炉压力协调优化控制系统的实现", 自动化与仪表, no. 10, pages 34 - 38 * |
| 王永学;: "汽轮机DEH阀门管理程序优化的方法", 机械工程师, no. 10, pages 192 - 193 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023226202A1 (en) * | 2022-05-25 | 2023-11-30 | 哈尔滨汽轮机厂有限责任公司 | System for controlling pressure and power of steam turbine of three-boiler two-turbine header system biomass power plant |
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| Publication number | Publication date |
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| WO2023226202A1 (en) | 2023-11-30 |
| CN114922701B (en) | 2023-09-05 |
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