WO2012103709A1 - 一种实现发电系统节能控制的方法、装置和发电系统 - Google Patents
一种实现发电系统节能控制的方法、装置和发电系统 Download PDFInfo
- Publication number
- WO2012103709A1 WO2012103709A1 PCT/CN2011/076391 CN2011076391W WO2012103709A1 WO 2012103709 A1 WO2012103709 A1 WO 2012103709A1 CN 2011076391 W CN2011076391 W CN 2011076391W WO 2012103709 A1 WO2012103709 A1 WO 2012103709A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- speed
- fuel consumption
- generator
- point
- output power
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/04—Control effected upon non-electric prime mover and dependent upon electric output value of the generator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/48—Arrangements for obtaining a constant output value at varying speed of the generator, e.g. on vehicle
Definitions
- the present invention relates to the field of control technologies, and in particular, to a method, device and power generation system for implementing energy-saving control of a power generation system.
- a diesel generator set is a small-scale power generation equipment. It usually refers to a power machine that uses diesel as a fuel and a diesel generator as a prime mover to drive a generator to generate electricity.
- its fuel consumption rate fuel consumed per unit of power generation
- the fuel consumption rate of a 10% load of a naturally aspirated small diesel generator set can reach the rated fuel consumption rate. More than double, so it is meaningful to reduce the fuel consumption of diesel generators in low load scenarios.
- the working principle is mainly as follows: by detecting the amount of load current, converting it into a load detector Analog current signal, and the signal is read by the automatic speed controller; then the read signal is compared with the rated current of the generator set by the automatic controller, and then the corresponding output analog quantity is adjusted according to the load size.
- the current signal controls the variable frequency compensator to adjust the output frequency and voltage, controls the electronic actuator to change the fuel supply of the generator, changes the speed of the generator, and changes the output power, thereby achieving the purpose of fuel saving.
- the embodiments of the present invention provide a method, an apparatus, and a power generation system for implementing energy-saving control of a power generation system, which can effectively reduce fuel consumption.
- the technical solution provided by the embodiment of the present invention is as follows:
- a method for realizing energy saving control of a power generation system comprising:
- the minimum fuel consumption point at the current output power obtained and the corresponding standard generator speed are queried, and the rotational speed of the generator is adjusted to The state in which the standard generator speed matches.
- a device for realizing energy-saving control of a power generation system comprising: an acquisition unit, a power sensor, a speed controller, and a speed control actuator;
- the obtaining unit is configured to obtain a correspondence between a minimum fuel consumption point of the generator and a rotational speed of the generator under different output powers, and send the same to the speed controller;
- the power sensor is configured to acquire a current output power of the generator, and send the obtained current output power to the speed controller;
- the speed controller is configured to query a minimum fuel consumption point at the current output power obtained and a corresponding standard generator speed by using a correspondence between the minimum fuel consumption point and a generator speed at the minimum fuel consumption point, The speed signal is sent to the speed control actuator;
- the speed governing actuator is configured to adjust a speed of the generator to a state matching the standard generator speed according to the speed signal sent by the speed controller.
- a power generation system comprising: a permanent magnet generator, an acquisition unit, a power sensor, a speed controller, a speed governing actuator, and an AC/DC rectifier;
- the obtaining unit is configured to obtain a correspondence between a minimum fuel consumption point and a rotational speed of the permanent magnet generator under different output powers, and send the same to the speed controller;
- the power sensor is configured to acquire a current output power of the permanent magnet generator, and send the obtained current output power to the speed controller;
- the speed controller is configured to query a minimum fuel consumption point at the current output power obtained and a corresponding standard generator speed by using a correspondence between the minimum fuel consumption point and a permanent magnet generator speed at the minimum fuel consumption point. Sending the speed signal to the speed control actuator;
- the speed governing actuator is configured to apply a permanent magnet generator according to a speed signal sent by the speed controller
- the rotational speed is adjusted to a state that matches the standard generator rotational speed
- the AC/DC rectifier is configured to convert an alternating current output by the permanent magnet generator into direct current.
- a power generation system comprising: a permanent magnet generator, an acquisition unit, a power sensor, a speed controller, a speed governing actuator, and an AC/DC rectifier; wherein
- the AC/DC rectifier is configured to convert the alternating current outputted by the permanent magnet generator into direct current;
- the obtaining unit is configured to obtain a correspondence between a minimum fuel consumption point and a rotational speed of the permanent magnet generator under different output powers, and send the same to The speed controller;
- the power sensor is configured to acquire a current output power of the permanent magnet generator converted by the AC/DC rectifier, and send the obtained current output power to the speed controller;
- the speed controller is configured to query a minimum fuel consumption point at the current output power obtained and a corresponding standard generator speed by using a correspondence between the minimum fuel consumption point and a permanent magnet generator speed at the minimum fuel consumption point. Sending the speed signal to the speed control actuator;
- the speed governing actuator is configured to adjust a speed of the permanent magnet generator to a state matching the standard generator speed according to the speed signal sent by the speed controller.
- the method, the device and the power generation system of the embodiment of the invention obtain the corresponding relationship between the minimum fuel consumption point of the generator and the rotation speed of the generator under different output powers, and find the minimum fuel consumption at the current power according to the current output power.
- Corresponding generator speed then adjusting the speed of the generator to the speed corresponding to the minimum fuel consumption, so that a large fuel economy and low consumption can be realized without adjusting the other equipment and its parameters of the generator set.
- the effect is that the generator set can work at a reasonable fuel-saving speed to maximize the fuel economy.
- Figure 1 is a schematic diagram of the system composition of the conventional load-carrying speed regulation to reduce fuel consumption
- FIG. 2 is a schematic flow chart of a method for implementing energy-saving control of a power generation system according to Embodiment 1 of the present invention
- FIG. 3 is a schematic structural diagram of an apparatus for implementing energy-saving control of a power generation system according to Embodiment 2 of the present invention
- FIG. 4 is a schematic structural diagram of a power generation system according to Embodiment 3 of the present invention
- Fig. 5 is a schematic structural view of a power generation system according to a fourth embodiment of the present invention.
- Embodiment 1 of the present invention provides a method for realizing energy-saving control of a power generation system; in order to avoid that the temperature rise of the magnetic field of the generator is not excessively high when the conventional generator is subjected to the on-load speed regulation, the method of the embodiment of the present invention mainly utilizes the The power generation system of the magnetic generator achieves the purpose of energy saving and low consumption; in particular, in order to make the energy saving effect more ideal, the method of the embodiment of the present invention performs an AC and DC conversion operation before the output power of the generator set is obtained, thereby alternating current The conversion to DC power ensures the stability and reliability of the system, which in turn improves energy efficiency.
- the method includes:
- Step 110 Obtain a correspondence between a minimum fuel consumption point of the generator at different output powers of the generator and a generator speed at the minimum fuel consumption point;
- the traditional climbing method/disturbance & observation method and the same principle of the two-stage method can be used to obtain the corresponding relationship between the minimum fuel consumption point of the generator and its rotational speed under different output powers of the generator set.
- the specific principle will not be described in detail herein;
- the generator since the generator has a minimum fuel consumption rate range at a certain output power, if the speed is higher or lower than this range, the fuel consumption rate will increase; therefore, according to the operation of the generator set Output power range, find out the fuel consumption rate of different speeds under different output powers in this range, and obtain the lowest fuel consumption rate to obtain the minimum fuel consumption point of the generator with different output power and its speed Relationship
- S111 preset output power of the generator and the speed of the generator
- S112 Adjust the rotation speed by increasing the step size N, and simultaneously calculate the fuel consumption of the generator at different rotation speeds;
- the invention also proposes another way of obtaining the correspondence between the minimum fuel consumption point of the generator and the rotational speed of the generator under different output powers, as follows:
- S121 Determine the direction of the change of the speed of the lowest fuel consumption point: preset output power of the generator set; separately calculate the fuel consumption corresponding to the two speed points N1 and ⁇ 2 of the step size ;; and the speed point of the high fuel consumption (if N1 The change in the rotational speed of the low fuel consumption point (if ⁇ 2) is the direction of the rotational speed change of the lowest fuel consumption point;
- S122 Obtain the speed range of the lowest fuel consumption point: Select the new speed point ⁇ 3 along the direction of the speed change of the lowest fuel consumption point, where ⁇ 3 ⁇ 2, and count the fuel consumption of the ⁇ 3 speed point, then determine the low fuel consumption.
- the range of speed change between the two speed points is the speed range of the lowest fuel consumption point;
- Step 120 Obtain a current output power of the generator.
- the power output sensor or the like may be used to detect the output power before the transmission in real time or periodically, which is not specifically limited herein; wherein, it is worth noting that the current output power of the generator in this embodiment It can also be obtained after the output AC power is converted into DC power, and the energy-saving and low-consumption performance is more stable and reliable due to the addition of the AC/DC power conversion step.
- Step 130 Using a correspondence between the minimum fuel consumption point and the generator speed at the minimum fuel consumption point The relationship queries the lowest fuel consumption point at the current output power obtained and the corresponding standard generator speed, and adjusts the speed of the generator to a state that matches the standard generator speed.
- the state of the matching refers to the standard generator speed corresponding to the lowest fuel consumption point under the current power in the embodiment, and the standard generator speed corresponding to the lowest fuel consumption point may be a certain speed value. It can also be a certain speed range, as long as its corresponding fuel consumption is the least, and will not be repeated here;
- the steps S111 to 114 after obtaining the current output power of the generator, first use the steps S111 to 114 to query the lowest fuel consumption point of the generator under the current power, and then use the minimum output of the generator under the different output powers that have been obtained.
- the corresponding relationship between the fuel consumption point and its rotational speed can be used to query the generator speed corresponding to the lowest fuel consumption at the current power, and then operate the generator to adjust its rotational speed to the generator speed corresponding to the lowest fuel consumption at the current power;
- the method of operating the generator may directly send a control signal to the generator, or may control the generator to adjust the rotational speed by an actuator that receives the indication signal, which is not specifically limited herein.
- Embodiment 2 of the present invention further provides an apparatus for implementing energy-saving control of a power generation system.
- the apparatus 300 includes: an acquisition unit 310, a power sensor 320, a speed controller 330, and speed control execution. 340; wherein
- the obtaining unit 310 is configured to obtain a correspondence between a minimum fuel consumption point of the generator and a rotational speed of the generator under different output powers, and send the same to the speed controller 330;
- the power sensor 320 is configured to acquire the current output power of the generator and send it to the speed controller 330;
- the speed controller 330 is configured to query the generator speed corresponding to the lowest fuel consumption point of the current output power acquired by the power sensor 320 by using the corresponding relationship acquired by the acquiring unit 310, and send the speed signal to the adjustment Speed actuator 340;
- the speed control actuator 340 is configured to adjust the speed of the generator to the generator speed corresponding to the lowest fuel consumption point corresponding to the current output power according to the speed signal sent by the speed controller 330.
- the obtaining unit 310 may further include (not shown in the figure): a first setting module, configured to set an output power of the generator and a rotation speed of the generator; a first statistical module, configured to adjust the rotation speed, and the statistics are different The fuel consumption of the generator at the rotating speed; the first recording module, configured to record the speed point with the least fuel consumption when the fuel consumption is decreased first and then increased at different speeds; or, when the fuel consumption When the quantity is increasing, the first statistical module is instructed to adjust the speed change step size, and the speed point with the least fuel consumption after adjusting the step size is recorded.
- the acquiring unit 310 may further include (not shown in the figure): a second setting module, configured to set output power of the genset; and a second statistic module, configured to separately calculate consumption corresponding to different speed points N1 and N2
- Embodiment 3 of the present invention further provides a power generation system.
- the system 400 includes: a permanent magnet generator 410, an acquisition unit 420, a power sensor 430, a speed controller 440, and a speed governing actuator. 450 and AC/DC rectifier 460; wherein
- the obtaining unit 420 is configured to obtain a correspondence between a minimum fuel consumption point of the permanent magnet generator 410 at different output powers and its rotational speed, and send the same to the speed controller 440;
- the power sensor 430 is configured to acquire the current output power of the permanent magnet generator 410, and send the obtained current output power to the speed controller 440;
- the speed controller 440 is configured to query a minimum fuel consumption point and a corresponding standard at the obtained current output power by using a correspondence relationship between the minimum fuel consumption point and the rotational speed of the permanent magnet generator 410 at the minimum fuel consumption point.
- Generator speed the speed signal is sent to the speed control actuator 450;
- the speed regulating actuator 450 is configured to adjust a speed of the permanent magnet generator 410 to a state matching the standard generator speed according to the speed signal sent by the speed controller 440;
- Embodiment 4 of the present invention also proposes a power generation system. As shown in FIG. 5, the power generation system is the same as the device included in the power generation system in the above embodiment, and the functions and connection relationships of most of the devices included therein are included. Similarly, the difference is that the current power acquired by the power sensor 430 is acquired after the AC/DC rectifier 460 converts the alternating current output by the permanent magnet generator 410 into direct current, thereby making the power saving effect of the power generation system. More stable and reliable.
- the device for implementing energy-saving control of the power generation system described in the above embodiments can also exist as a part of other systems, and control the energy-saving aspect of the generator in the system and the above embodiment.
- the descriptions in the above are consistent, and thus other systems including the devices for implementing the energy-saving control of the power generation system in the above embodiments are also included in the protection scope of the present application, and are not described herein again.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201180000853.XA CN102232268B (zh) | 2011-06-27 | 2011-06-27 | 一种实现发电系统节能控制的方法、装置和发电系统 |
PCT/CN2011/076391 WO2012103709A1 (zh) | 2011-06-27 | 2011-06-27 | 一种实现发电系统节能控制的方法、装置和发电系统 |
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PCT/CN2011/076391 WO2012103709A1 (zh) | 2011-06-27 | 2011-06-27 | 一种实现发电系统节能控制的方法、装置和发电系统 |
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WO2012103709A1 true WO2012103709A1 (zh) | 2012-08-09 |
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PCT/CN2011/076391 WO2012103709A1 (zh) | 2011-06-27 | 2011-06-27 | 一种实现发电系统节能控制的方法、装置和发电系统 |
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CN (1) | CN102232268B (zh) |
WO (1) | WO2012103709A1 (zh) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109383783B (zh) * | 2018-08-31 | 2022-07-26 | 辽宁同心圆科技有限公司 | 航空发动机节能助力系统 |
CN109383782B (zh) * | 2018-08-31 | 2022-07-26 | 辽宁同心圆科技有限公司 | 航空发动机脱险节能助力系统 |
CN109270966B (zh) * | 2018-08-31 | 2021-12-10 | 沈阳一丁通用科技研究院 | 节能永磁调速系统及方法 |
CN109204797B (zh) * | 2018-08-31 | 2022-07-26 | 辽宁同心圆科技有限公司 | 航空发动机节能助力装置 |
CN117605589B (zh) * | 2024-01-24 | 2024-03-29 | 山西汇达电信设备有限公司 | 一种柴油发电机的节能控制方法 |
Citations (4)
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CN1074870A (zh) * | 1991-10-04 | 1993-08-04 | 曼内斯曼股份公司 | 一种汽车传动系统 |
JPH0861114A (ja) * | 1994-08-25 | 1996-03-05 | Isuzu Motors Ltd | エンジン運転制御装置 |
CN101826833A (zh) * | 2009-03-02 | 2010-09-08 | 上海恒锦动力科技有限公司 | 自动变频节能电子调速控制系统 |
CN102005999A (zh) * | 2009-09-02 | 2011-04-06 | 张怀亮 | 用于内燃发电机组的节能控制器 |
-
2011
- 2011-06-27 WO PCT/CN2011/076391 patent/WO2012103709A1/zh active Application Filing
- 2011-06-27 CN CN201180000853.XA patent/CN102232268B/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1074870A (zh) * | 1991-10-04 | 1993-08-04 | 曼内斯曼股份公司 | 一种汽车传动系统 |
JPH0861114A (ja) * | 1994-08-25 | 1996-03-05 | Isuzu Motors Ltd | エンジン運転制御装置 |
CN101826833A (zh) * | 2009-03-02 | 2010-09-08 | 上海恒锦动力科技有限公司 | 自动变频节能电子调速控制系统 |
CN102005999A (zh) * | 2009-09-02 | 2011-04-06 | 张怀亮 | 用于内燃发电机组的节能控制器 |
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CN102232268B (zh) | 2013-06-05 |
CN102232268A (zh) | 2011-11-02 |
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