阅读说明：本技术 柴油发电机启动的分级加载控制方法、系统、存储介质及终端 (Staged loading control method and system for starting diesel generator, storage medium and terminal ) 是由 徐纪明 张�杰 曹峰 伏文斌 安艳兵 于 2021-08-24 设计创作，主要内容包括：本发明提供一种柴油发电机启动的分级加载控制方法、系统、存储介质及终端,包括以下步骤：对于每一级加载控制,发送给定功率至变频器,以使所述变频器将所述给定功率作为设置功率控制柴油发电机组的输出功率；加载柴油发电机时,若S-(M)≥S*a,持续加载所述柴油发电机；否则,调整所述变频器的设置功率直至S-(M)≥S*a,且调整期间当P-(C2)≤P-(C1)*b时停止加载所述柴油发电机,并在S-(M)≥S*a时恢复加载所述柴油发电机。本发明的柴油发电机启动的分级加载控制方法、系统、存储介质及终端在不增加硬件设备的条件下,通过对变频器和柴油发电机组运行参数的监测,实现对柴油发电机的分级加载。(The invention provides a staged loading control method, a staged loading control system, a storage medium and a terminal for starting a diesel generator, wherein the staged loading control method comprises the following steps of: for each level of loading control, sending given power to a frequency converter, so that the frequency converter takes the given power as set power to control the output power of a diesel generator set; when loading the diesel generator, if S M The step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, adjusting the set power of the frequency converter until S M Is ≧ SA, and when P is during the adjustment C2 ≤P C1 Stopping loading the diesel generator at S M And when the load is larger than or equal to S & a, the diesel generator is restored to be loaded. The invention discloses a staged loading control method, a staged loading control system, a storage medium and a staged loading control terminal for starting a diesel generator, which realize staged loading of the diesel generator by monitoring the operating parameters of a frequency converter and a diesel generator set under the condition of not increasing hardware equipment.)

1. A staged loading control method for starting a diesel generator is characterized by comprising the following steps: the method comprises the following steps:

for each level of loading control, sending given power to a frequency converter, so that the frequency converter takes the given power as set power to control the output power of a diesel generator set;

when loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, adjusting the set power of the frequency converter until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; wherein S is_MAnd S is the real-time rotation speed and the rated rotation speed of the diesel generator set respectively, P_C1For said given power, P_C2For the set power, a and b are values in the interval (0, 1).

2. The staged loading control method for diesel generator start-up according to claim 1, wherein: setting P at the first stage of load control_C125% of P, adding P_C1Sending the P signal to the frequency converter to enable the frequency converter to convert the P signal into P signal_C1As P_C2Controlling the output power of the diesel generator set; when loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, P is set_C2＝P_C180%, loop iteration until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; and P is the set power of the diesel generator set.

3. The staged loading control method for diesel generator start-up according to claim 1, wherein: setting P at the time of second-stage load control_C150% of P, adding P_C1Sending the P signal to the frequency converter to enable the frequency converter to convert the P signal into P signal_C1As P_C2Controlling the output power of the diesel generator set; when loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, P is set_C2＝P_C180%, loop iteration until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; and P is the set power of the diesel generator set.

4. The staged loading control for diesel generator start-up of claim 1The method is characterized in that: at the third level of load control, P is set_C175% of P, and mixing P_C1Sending the P signal to the frequency converter to enable the frequency converter to convert the P signal into P signal_C1As P_C2Controlling the output power of the diesel generator set; when loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, P is set_C2＝P_C180%, loop iteration until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; and P is the set power of the diesel generator set.

5. The staged loading control method for diesel generator start-up according to claim 1, wherein: at the fourth stage of load control, P is set_C1100% of P, adding P_C1Sending the P signal to the frequency converter to enable the frequency converter to convert the P signal into P signal_C1As P_C2Controlling the output power of the diesel generator set; when loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, P is set_C2＝P_C180%, loop iteration until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; and P is the set power of the diesel generator set.

6. The staged loading control method for diesel generator start-up according to any one of claims 1 to 5, wherein: the value of a is 85 percent, and the value of b is 50 percent.

7. A staged loading control system for starting a diesel generator is characterized in that: the device comprises a sending module and a loading module;

the sending module is used for sending given power to the frequency converter for each level of loading control, so that the frequency converter takes the given power as set power to control the output power of the diesel generator set;

when the loading module is used for loading the diesel generator, if S is detected_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, adjusting the set power of the frequency converter until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; wherein S is_MAnd S is the real-time rotation speed and the rated rotation speed of the diesel generator set respectively, P_C1For said given power, P_C2For the set power, a and b are values in the interval (0, 1).

8. A storage medium on which a computer program is stored, characterized in that the program, when executed by a processor, implements the hierarchical loading control method of diesel generator startup of any one of claims 1 to 5.

9. A staged loading control terminal for starting a diesel generator is characterized by comprising: a processor and a memory;

the memory is used for storing a computer program;

the processor is configured to execute the computer program stored in the memory to cause the diesel generator start-up hierarchical loading control terminal to execute the diesel generator start-up hierarchical loading control method according to any one of claims 1 to 5.

10. A staged loading control system for starting a diesel generator is characterized in that: a step-load control terminal and a frequency converter comprising the diesel generator start-up of claim 9;

the frequency converter is used for controlling the output power of the diesel generator set by the set power provided by the grading loading control terminal for starting the diesel generator.

Technical Field

The invention relates to the technical field of diesel generators, in particular to a staged loading control method, a staged loading control system, a storage medium and a terminal for starting a diesel generator.

Background

The diesel generator set is a power supply device which takes a diesel engine as a prime mover and drags a synchronous generator to generate electricity, and is a generating set which has the advantages of quick start, convenient operation and maintenance, less investment and stronger adaptability to the environment.

In the prior art, the use of diesel generator sets by port machinery is generally simpler. The limitation of the maximum output power of the diesel generator set is realized by setting a current limiting value through a frequency converter. However, the above approach has certain drawbacks. That is, when the diesel generator is to be loaded, the diesel generator has a problem of sudden loading (similar to the situation that the automobile is deeply stepped on the accelerator each time the automobile accelerates) because the limit value given by the frequency converter is relatively large. Under the working condition, the diesel generator set can frequently emit black smoke, so that the problems of increased oil consumption, easy flameout of the diesel generator set, substandard service life reduction of the diesel generator set due to exhaust emission and the like are caused

Disclosure of Invention

In view of the above drawbacks of the prior art, an object of the present invention is to provide a method, a system, a storage medium, and a terminal for controlling the staged loading of a diesel generator, which implement the staged loading of the diesel generator by monitoring the operating parameters of a frequency converter and a diesel generator set without adding hardware devices.

To achieve the above and other related objects, the present invention provides a staged loading control method for starting a diesel generator, comprising the steps of: for each level of loading control, sending given power to a frequency converter, so that the frequency converter takes the given power as set power to control the output power of a diesel generator set; when loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, adjusting the set power of the frequency converter until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; wherein S is_MAnd S is the real-time rotation speed and the rated rotation speed of the diesel generator set respectively, P_C1Is a stand forGiven power, P_C2For the set power, a and b are values in the interval (0, 1).

In one embodiment of the present invention, P is set during the first level of load control_C125% of P, adding P_C1Sending the P signal to the frequency converter to enable the frequency converter to convert the P signal into P signal_C1As P_C2Controlling the output power of the diesel generator set; when loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, P is set_C2＝P_C180%, loop iteration until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; and P is the set power of the diesel generator set.

In one embodiment of the present invention, P is set during the second level of load control_C150% of P, adding P_C1Sending the P signal to the frequency converter to enable the frequency converter to convert the P signal into P signal_C1As P_C2Controlling the output power of the diesel generator set; when loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, P is set_C2＝P_C180%, loop iteration until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; and P is the set power of the diesel generator set.

In one embodiment of the present invention, P is set during the third level loading control_C175% of P, and mixing P_C1Sending the P signal to the frequency converter to enable the frequency converter to convert the P signal into P signal_C1As P_C2Controlling the output power of the diesel generator set; when loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, P is set_C2＝P_C180%, loop iteration until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; it is composed ofAnd P is the set power of the diesel generator set.

In an embodiment of the present invention, P is set during the fourth stage loading control_C1100% of P, adding P_C1Sending the P signal to the frequency converter to enable the frequency converter to convert the P signal into P signal_C1As P_C2Controlling the output power of the diesel generator set; when loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, P is set_C2＝P_C180%, loop iteration until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; and P is the set power of the diesel generator set.

In one embodiment of the present invention, a is 85% and b is 50%.

The invention provides a graded loading control system for starting a diesel generator, which comprises a sending module and a loading module, wherein the sending module is used for sending a request message to the loading module;

the sending module is used for sending given power to the frequency converter for each level of loading control, so that the frequency converter takes the given power as set power to control the output power of the diesel generator set;

when the loading module is used for loading the diesel generator, if S is detected_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, adjusting the set power of the frequency converter until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; wherein S is_MAnd S is the real-time rotation speed and the rated rotation speed of the diesel generator set respectively, P_C1For said given power, P_C2For the set power, a and b are values in the interval (0, 1).

The present invention provides a storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described hierarchical loading control method of diesel generator startup.

The invention provides a graded loading control terminal for starting a diesel generator, which comprises: a processor and a memory;

the memory is used for storing a computer program;

the processor is used for executing the computer program stored in the memory so as to enable the staged loading control terminal for starting the diesel generator to execute the staged loading control method for starting the diesel generator.

The invention provides a graded loading control system for starting a diesel generator, which comprises a graded loading control terminal and a frequency converter for starting the diesel generator;

the frequency converter is used for controlling the output power of the diesel generator set by the set power provided by the grading loading control terminal for starting the diesel generator.

As described above, the staged loading control method, system, storage medium and terminal for starting a diesel generator according to the present invention have the following advantages:

(1) under the condition of not increasing hardware equipment, the grading loading of the diesel generator is realized by monitoring the operating parameters of the frequency converter and the diesel generator set;

(2) the problems of flameout, black smoke emission, increased oil consumption, shortened service life of the diesel generator set and the like caused by sudden loading of the diesel generator are solved, so that the diesel generator runs more stably, the flameout probability and the oil consumption are greatly reduced, and the service life of the diesel generator set is prolonged.

Drawings

FIG. 1 is a flow chart illustrating a method for controlling the staged loading of a diesel generator start according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a staged loading control system for starting a diesel generator according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a staged loading control terminal for starting a diesel generator according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a staged loading control system for starting a diesel generator according to another embodiment of the present invention.

Description of the element reference numerals

21 sending module

22 load module

31 processor

32 memory

Step loading control terminal for starting 41 diesel generator

42 frequency converter

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

The method, the system, the storage medium and the terminal for controlling the graded loading of the starting of the diesel generator control the graded loading of the diesel generator by monitoring the operating parameters of the frequency converter and the diesel generator set under the condition of not increasing hardware equipment, so that the diesel generator runs more stably, the flameout probability and the oil consumption are greatly reduced, the service life of the diesel generator set is prolonged, and the method, the system, the storage medium and the terminal have high practicability.

As shown in fig. 1, in an embodiment, the method for controlling the staged loading of the start-up of the diesel generator of the present invention includes the following steps:

and step S1, for each level of loading control, sending given power to a frequency converter, so that the frequency converter takes the given power as set power to control the output power of the diesel generator set.

Specifically, in the initial stage of each stage of loading control of the diesel generator, the stage loading control terminal started by the diesel generator firstly sends the given power of the stage loading control terminal to the frequency converter. And the frequency converter takes the given power as the current set power and controls the output power of the diesel generating set according to the set power.

Step S2, when loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, adjusting the set power of the frequency converter until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; wherein S is_MAnd S is the real-time rotation speed and the rated rotation speed of the diesel generator set respectively, P_C1For said given power, P_C2For the set power, a and b are values in the interval (0, 1).

Specifically, in the process of loading the diesel generator, the real-time rotating speed of the diesel generator set is collected, and the loading of the diesel generator is controlled according to the relation between the real-time rotating speed and the rated rotating speed of the diesel generator set. Wherein when S_MContinuously loading the diesel generator when the speed is more than or equal to Sxa; when S is_MWhen the frequency is less than S, the step loading control terminal started by the diesel generator adjusts the set power of the frequency converter until S_MAnd more than or equal to S alpha. At the same time, during the adjustment, when P is_C2≤P_C1Stopping loading the diesel generator at S_MAnd when the load is larger than or equal to S & a, the diesel generator is restored to be loaded. Preferably, a is 85% and b is 50%.

The loading control process of each stage of the diesel generator starting of the invention is explained in detail below.

In the first-stage loading control, the staged loading control terminal for starting the diesel generator is set with P_C125% of P, adding P_C1And sending the signal to the frequency converter. The frequency converter converts P_C1As P_C2Controlling the diesel generator setThe output power of (1). When loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, the step loading control terminal for starting the diesel generator is set to be P_C2＝P_C180%, loop iteration until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; and P is the set power of the diesel generator set. Specifically, the staged loading control terminal for starting the diesel generator sends P_C180% to the frequency converter, i.e. in P_C180% as the set power.

In the second-stage loading control, the staged loading control terminal for starting the diesel generator is set with P_C150% of P, adding P_C1And sending the signal to the frequency converter. The frequency converter converts P_C1As P_C2And controlling the output power of the diesel generator set. When loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, the step loading control terminal for starting the diesel generator is set to be P_C2＝P_C180%, loop iteration until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; and P is the set power of the diesel generator set. Specifically, the staged loading control terminal for starting the diesel generator sends P_C180% to the frequency converter, i.e. in P_C180% as the set power.

In the third-level loading control, the staged loading control terminal for starting the diesel generator is set with P_C175% of P, and mixing P_C1Sending the P signal to the frequency converter to enable the frequency converter to convert the P signal into P signal_C1As P_C2Controlling the output power of the diesel generator set; when loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, the step loading control terminal for starting the diesel generator is set to be P_C2＝P_C180%, loop iteration until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; and P is the set power of the diesel generator set. Specifically, the staged loading control terminal for starting the diesel generator sends P_C180% to the frequency converter, i.e. in P_C180% as the set power.

In the fourth stage loading control, the staged loading control terminal for starting the diesel generator is set with P_C1100% of P, adding P_C1Sending the P signal to the frequency converter to enable the frequency converter to convert the P signal into P signal_C1As P_C2Controlling the output power of the diesel generator set; when loading the diesel generator, if S_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, the step loading control terminal for starting the diesel generator is set to be P_C2＝P_C180%, loop iteration until S_MIs ≧ SA, and when P is during the adjustment_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; and P is the set power of the diesel generator set. Specifically, the staged loading control terminal for starting the diesel generator sends P_C180% to the frequency converter, i.e. in P_C180% as the set power.

As shown in fig. 2, in one embodiment, the staged loading control system for starting a diesel generator of the present invention includes a sending module 21 and a loading module 22.

The sending module 21 is configured to send a given power to the frequency converter for each level of loading control, so that the frequency converter controls the output power of the diesel generator set with the given power as a set power.

The loading module 22 is connected with the sending module 21 and is used for loading the diesel generator if S is detected_MThe step A is that S is greater than or equal to a, the diesel generator is continuously loaded; otherwise, adjusting the set power of the frequency converter until S_MNot less than S a, and adjusting periodWhen P_C2≤P_C1Stopping loading the diesel generator at S_MResuming loading the diesel generator at a time S & gta; wherein S is_MAnd S is the real-time rotation speed and the rated rotation speed of the diesel generator set respectively, P_C1For said given power, P_C2For the set power, a and b are values in the interval (0, 1).

The structures and principles of the sending module 21 and the loading module 22 correspond to the steps in the above-mentioned step loading control method for starting the diesel generator one by one, and therefore are not described herein again.

It should be noted that the division of the modules of the above apparatus is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the x module may be a processing element that is set up separately, or may be implemented by being integrated in a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and the function of the x module may be called and executed by a processing element of the apparatus. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

The storage medium of the present invention stores thereon a computer program that, when executed by a processor, implements the above-described hierarchical loading control method for starting a diesel generator. The storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic disk, U-disk, memory card, or optical disk.

As shown in fig. 3, in an embodiment, the staged loading control terminal for starting a diesel generator of the present invention includes: a processor 31 and a memory 32.

The memory 32 is used for storing computer programs.

The memory 32 includes: various media that can store program codes, such as ROM, RAM, magnetic disk, U-disk, memory card, or optical disk.

The processor 31 is connected to the memory 32 and configured to execute the computer program stored in the memory 32, so that the staged loading control terminal for starting the diesel generator executes the staged loading control method for starting the diesel generator.

Preferably, the Processor 31 may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; the Integrated Circuit may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components.

As shown in fig. 4, in an embodiment, the staged loading control system for starting a diesel generator of the present invention includes the above-mentioned staged loading control terminal 41 for starting a diesel generator and the frequency converter 42.

The frequency converter 42 is connected with the step loading control terminal 41 started by the diesel generator and the diesel generator set, and is used for controlling the output power of the diesel generator set by the setting power provided by the step loading control terminal 41 started by the diesel generator, so that the step loading control of the start of the diesel generator is realized.

In summary, the method, the system, the storage medium and the terminal for controlling the graded loading of the starting of the diesel generator realize the graded loading of the diesel generator by monitoring the operation parameters of the frequency converter and the diesel generator set under the condition of not increasing hardware equipment; the problems of flameout, black smoke emission, increased oil consumption, shortened service life of the diesel generator set and the like caused by sudden loading of the diesel generator are solved, so that the diesel generator runs more stably, the flameout probability and the oil consumption are greatly reduced, and the service life of the diesel generator set is prolonged. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.