Automatic reminding method, equipment, medium and product for startup and shutdown application of large-scale hydro-generator

Abstract

The invention discloses an automatic starting and stopping application reminding method, equipment, a medium and a product for a large-scale hydro-generator, and relates to the technical field of hydropower stations. Upper and lower limits of a bistable area of a unit under a corresponding water head are taken as boundary conditions, and the number of grid-connected operation units required by a latest power generation plan received by a monitoring system at each time point is analyzed; the latest time and the minimum number of units for grid connection / disconnection of the units are automatically calculated, a period of time is properly reserved, and a watch keeper is reminded through a voice alarm server and an alarm event. According to the invention, the time and the number of startup and shutdown applications of the large-scale water-turbine generator set with the bistable operation area can be automatically calculated, and reminding is carried out in modes of alarm, voice and the like of the monitoring system; the consequences that the power generation plan deviates and the unit enters an unstable operation area due to the fact that a hydropower station operation watchman mistakenly calculates the start-stop time or forgets to apply for dispatching in advance are avoided, the reliability of executing the power generation plan is improved, and the workload of the operation watchman is relieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydropower stations, in particular to a large-scale hydro-generator start / stop application automatic reminding method, device, medium and product. BACKGROUND

[0002] The statements in this section merely provide background information related to the present disclosure and can not constitute the prior art.

[0003] Under the background of deepening the reform of the power system and accelerating the construction of a new power system that is clean, low-carbon, safe, abundant, economic, efficient, supply-demand coordinated and flexible and intelligent, large-scale hydro-generator units will not only provide large-scale and stable power output, but also will bear more functions such as peak shaving, frequency modulation, and water-fire-wind-sunlight complementary regulation in the power spot market and auxiliary service market. The frequency of starting and stopping is increasing, and the peak shaving range is increasing. The operation on-duty personnel of the hydropower station need to more accurately calculate the time and number of starting and stopping while monitoring the running state of the whole plant equipment. Since the generator set is a regulating equipment, it needs to go through the links of application, order, record, recitation, and check the starting and stopping conditions before starting and stopping, and needs to apply to the dispatch at an appropriate time in advance.

[0004] For large-scale hydro-generator units with double stable operation zones, since the two stable operation zones are discontinuous, the boundary conditions of the stable operation of the unit are more complex compared with the single stable operation zone unit. In the real-time market, the generation plan is rolled out, and the timing requirement of applying for starting and stopping is more stringent. Once it is missed, it will lead to serious consequences such as generation plan deviation, AGC exit, unit entering non-stable operation zone, and affecting the safe and stable operation of the power grid or equipment. SUMMARY

[0005] The purpose of the present application is to provide a large-scale hydro-generator start / stop application automatic reminding method, device, medium and product to solve the above problems by taking the upper and lower limits of the double stable zones of the unit under the corresponding water head as the boundary conditions, automatically calculating the latest time and minimum number of unit grid connection / disconnection, and reminding the on-duty personnel through a voice alarm server and alarm events by appropriately reserving a period of time.

[0006] The technical scheme of the present application is as follows: The large-scale hydro-generator start / stop application automatic reminding method comprises: Step S1: obtaining the current number of grid-connected running units Nt, calculating the lower limit P1min / upper limit P1max of the stable zone one and the lower limit P1min / upper limit P1max of the stable zone two under the current combination of starting units; Step S2: receiving the time Tk, the power generation plan Pk and the total number of power station units N of the day power generation plan of the monitoring system at the kth point, calculating whether the power generation plan at each time of the day is executable under the current water head; wherein k=0,…,287; Step S3: if the power generation plan at the kth point is executable under the current water head, calculating the characteristic value Nkmin, Nkmax of the running unit number at the kth point; Step S4: calculating the number of units △Nk that need to be started and stopped at the kth point, and determining the time and number of units that the monitoring system reminds the operator to apply to start and stop to the dispatch.

[0007] Further, the step S1 comprises: The monitoring system obtains the lower limit P11 / upper limit P12 of the stable region one and the lower limit P21 / upper limit P22 of the stable region two at the current time through the imported AGC-unit water head active corresponding relationship constant table, and calculates the lower limit P1min / upper limit P1max of the stable region one and the lower limit P2min / upper limit P2max of the stable region two of the whole plant at the current time.

[0008] Further, the calculation formulae of the lower limit P1min / upper limit P1max of the stable region one and the lower limit P2min / upper limit P2max of the stable region two of the whole plant are as follows: P1min=P11*Nt P1max=P12*Nt P2min=P21*Nt P2max=P22*Nt.

[0009] Further, the step S2 comprises: If Pk

[0010] Further, the calculation formula of Nkmin in the step S3 is as follows: Nkmin=roundup(Pk / P22).

[0011] Further, Nkmax in the step S3 is determined according to the following process: If Pk If P1min≤Pk≤P1max, Nkmax=Nt; If P1max If Pk≥P2min, Nkmax=Nt; Wherein: The roundup(x) function is a rounding-up function, which returns the minimum integer not less than x; the roundown(x) function is a rounding-down function, which returns the maximum integer not greater than x.

[0012] Further, the step S4 comprises: If NtNkmin,▽Nk=Nkmin-Nt, the monitoring system reminds the on-duty staff to apply for starting▽Nk units at T(k-12) time; If Nt>Nkmax,▽Nk=Nt-Nkmax; the monitoring system reminds the on-duty staff to apply for stopping▽Nk units at T(k-12) time; Otherwise▽Nk=0, no need to start or stop at the k point.

[0013] The application further provides an electronic device, comprising: At least one processor; and a memory connected in communication with the at least one processor; Wherein, the memory stores instructions executable by the at least one processor, and the at least one processor executes the instructions stored in the memory, so that the at least one processor executes the large hydro-generator starting and stopping application automatic reminding method as described above.

[0014] The application further provides a computer terminal storage medium, which stores computer terminal executable instructions, and the computer terminal executable instructions are used to execute the large hydro-generator starting and stopping application automatic reminding method as described above.

[0015] The application further provides a computer program product, wherein the computer program is executed by a processor to realize the large hydro-generator starting and stopping application automatic reminding method as described above.

[0016] Compared with the prior art, the application has the following beneficial effects: 1. The application can automatically calculate the time and number of large hydro-generator units with double stable operation area starting and stopping application, and remind through the monitoring system alarm, voice and other ways, which avoids the consequences of power generation plan deviation, unit entering non-stable operation area and other consequences caused by the on-duty staff of the hydropower station due to the calculation error or forgetting of starting and stopping time, improves the reliability of executing the power generation plan, and reduces the work burden of the on-duty staff.

[0017] 2. The application can realize real-time calculation of the power generation plan and water head update, provide reference for determining the unit operation mode of the on-duty staff, and help to further improve the timeliness and accuracy of the hydropower station in tracking the power generation plan in the electricity spot market and auxiliary service market.

[0018] 3、The application can modify corresponding parameters according to the requirements of different models of the stable area, inherent start-stop time and the market capacity of frequency modulation, and has universality and extensibility. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Flowchart of the automatic reminding method for start-stop of a large-scale hydro-generator; Figure 2 A structure diagram of an electronic device provided in an embodiment of the application. DETAILED DESCRIPTION

[0020] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0021] The features and performance of the application will be further described in detail below in conjunction with embodiments.

[0022] Embodiment One Under the background of deepening the reform of the power system and accelerating the construction of a new power system that is clean and low-carbon, safe and abundant, economic and efficient, supply-demand coordinated, and flexible and intelligent, large-scale hydro-generator units will not only provide large-scale and stable power output, but also will undertake more functions such as peak shaving, frequency modulation, and water-fire-wind-sun complementary regulation in the electricity spot market and auxiliary service market, the start-stop frequency is increasing, the peak shaving range is increasing, and the operation on-duty personnel of the hydropower station needs to more accurately calculate the time and number of start-stop while monitoring the running state of the whole plant equipment. Since the generator set is a regulating device, it needs to go through the links of application, order, record, recitation, and check the start-stop conditions before start-stop, and needs to apply to the dispatch in advance at the appropriate time.

[0023] For large hydro-generator units with two stable operating regions, due to the discontinuity of the two stable operating regions, compared with single stable operating region units, the boundary conditions of stable operation of the unit are more complex, in the real-time market, the rolling out of the power generation plan is clear, the timing requirements for applying for start and stop are more stringent, once missed, it will lead to power generation plan deviation, AGC exit, unit into non-stable operating region and other serious consequences, affecting the safe and stable operation of the power grid or equipment.

[0024] Therefore, based on the above problems, the embodiment provides a large hydro-generator start and stop application automatic reminding method, device, medium and product, which takes the upper and lower limits of the double stable regions of the unit under the corresponding water head as the boundary conditions, automatically calculates the latest time and minimum number of units for grid connection / disconnection by analyzing the number of units required for grid connection at each time point of the latest power generation plan received by the monitoring system, and appropriately reserves a period of time to remind the operator through a voice alarm server and alarm events.

[0025] In the embodiment, specifically, please refer to Figure 1 The large hydro-generator start and stop application automatic reminding method can quickly and reliably provide a unit load distribution strategy that meets the full plant load output requirements, and specifically includes the following steps: Step S1: obtaining the number of currently grid-connected units Nt, calculating the lower limit P1min / upper limit P1max of the stable region one and the lower limit P1min / upper limit P1max of the stable region two of the full plant under the current unit combination; Step S2: receiving the time Tk, power generation plan Pk and total number of power plant units N of the monitoring system at the kth point of the day, and calculating whether the power generation plan at each time of the day is executable under the current water head; wherein k=0,…,287; Step S3: if the power generation plan at the kth point is executable under the current water head, calculating the eigenvalue Nkmin, Nkmax of the number of units running at the kth point; Step S4: calculating the number of units to be started and stopped △Nk at the kth point, and determining the time and number of units for which the monitoring system reminds the operator to apply for starting and stopping to the dispatch.

[0026] In the embodiment, specifically, the step S1 includes: The monitoring system obtains the lower limit P11 / upper limit P12 of the stable region one and the lower limit P21 / upper limit P22 of the stable region two of the current time water head single unit through the imported AGC-unit water head active corresponding relationship constant value table, and calculates the lower limit P1min / upper limit P1max of the stable region one and the lower limit P2min / upper limit P2max of the stable region two of the full plant at the current time based on the above.

[0027] In the embodiment, specifically, the calculation formulae of the lower limit P1min and the upper limit P1max of the first power plant stability zone and the lower limit P2min and the upper limit P2max of the second power plant stability zone are as follows: P1min=P11*Nt P1max=P12*Nt P2min=P21*Nt P2max=P22*Nt.

[0028] In the embodiment, specifically, the step S2 comprises: If Pk That is, if the power generation plan does not have the executability, the operator is reminded to apply for modification of the power generation plan at the corresponding point to the dispatcher.

[0029] In the embodiment, specifically, the calculation formula of Nkmin in the step S3 is as follows: Nkmin=roundup(Pk / P22).

[0030] Further, Nkmax in the step S3 is determined according to the following flow: If Pk If P1min≤Pk≤P1max, Nkmax=Nt; If P1max If Pk≥P2min, Nkmax=Nt; Wherein: The roundup(x) function is a rounding-up function, which returns the minimum integer not less than x; the roundown(x) function is a rounding-down function, which returns the maximum integer not greater than x.

[0031] In the embodiment, specifically, the step S4 comprises: If Nt If Nt Otherwise, △Nk=0, and no start-up or shutdown is needed at the kth point.

[0032] Based on the same technical concept, the embodiment of the present application also provides an electronic device which can realize the method and process of automatic reminding of large-scale hydro-generator start-up and shutdown application provided by the above-mentioned embodiment of the present application. In an embodiment, the electronic device can be a server, a terminal device or other electronic device. As shown in Figure 2 , the electronic device can include: at least one processor, and a memory connected with the at least one processor, and the specific connection medium between the processor and the memory in the embodiment of the present application is not limited, Figure 2 for example, the connection between the processor and the memory through a bus is taken as an example. The bus is represented by a thick line in Figure 2 , and the connection mode between other components is only schematically illustrated and is not limited. The bus can be divided into an address bus, a data bus, a control bus, etc., for the convenience of representation, Figure 2 only one thick line is used in the embodiment, but it does not mean that there is only one bus or only one type of bus. Alternatively, the processor can also be referred to as a controller, and the name is not limited.

[0033] In the embodiment of the present application, the memory stores instructions executable by the at least one processor, and the at least one processor can execute the large-scale hydro-generator start-up and shutdown application automatic reminding method discussed above by executing the instructions stored in the memory. The processor can realize Figure 2 the functions of various modules in the device shown in

[0034] Among them, the processor is the control center of the device, and can connect all parts of the control device through various interfaces and lines, and through running or executing the instructions stored in the memory and calling the data stored in the memory, the device processes data and realizes various functions, thereby overall monitoring the device.

[0035] In an optional design, the processor can include one or more processing units, and the processor can integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, the user interface and the application program, etc., and the modem processor mainly processes wireless communication. It can be understood that the above-mentioned modem processor can also not be integrated into the processor. In some embodiments, the processor and the memory can be realized on the same chip, and in some embodiments, they can also be realized on independent chips respectively.

[0036] The processor can be a general purpose processor, such as a CPU, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic device, discrete gate or transistor logic, discrete hardware components, can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general purpose processor can be a microprocessor or any conventional processor, etc. The steps of the large hydro-generator start-stop application automatic reminding method disclosed in the embodiments of the present application can be directly embodied as hardware processor execution, or executed by a combination of hardware and software modules in the processor.

[0037] The memory is a non-volatile computer readable storage medium, which can be used to store non-volatile software programs, non-volatile computer executable programs and modules. The memory can include at least one type of storage medium, such as flash memory, hard disk, multimedia card, card type memory, random access memory (RAM), static random access memory (SRAM), programmable read only memory (PROM), read only memory (ROM), electrically erasable programmable read only memory (EEPROM), magnetic memory, magnetic disk, optical disk, etc. The memory is any other medium capable of carrying or storing desired program code in the form of instructions or data structures and capable of being accessed by a computer, but is not limited to this. The memory in the embodiments of the present application can also be a circuit or any other device capable of realizing the storage function, used for storing program instructions and / or data.

[0038] By designing and programming the processor, the code corresponding to the large hydro-generator start-stop application automatic reminding method introduced in the foregoing embodiments can be fixed into the chip, so that the chip can execute the steps of the method of the above embodiments when running. How to design and program the processor is a technology known to those skilled in the art, which will not be described here.

[0039] Based on the same inventive concept, the embodiments of the present application also provide a storage medium storing computer instructions, when the computer instructions run on a computer, the computer executes the large hydro-generator start-stop application automatic reminding method discussed above.

[0040] In some alternative embodiments, various aspects of the method for automatically reminding the application of starting and stopping of large hydro-generator can also be implemented as a program product in the form of a computer program product, which includes program codes for causing the control device to perform the steps of the method for automatically reminding the application of starting and stopping of large hydro-generator according to various exemplary embodiments of the present application described above when the program product is run on the device.

[0041] It should be noted that although several units or sub-units of the device are mentioned in the above detailed description, such division is merely exemplary and not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more units described above can be embodied in one unit. Conversely, the features and functions of one unit described above can be further divided into units embodied by multiple units. Moreover, although the operations of the method of the present application are described in a particular order in the accompanying drawings, this does not require or imply that the operations must be performed in that particular order, or that all of the illustrated operations must be performed to achieve the desired results. Additionally or alternatively, certain steps can be omitted, combined, performed in a different order, and / or split into multiple steps.

[0042] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage devices, etc.) containing computer-usable program code.

[0043] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, as well as a combination of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing apparatus to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing apparatus produce a device that implements the functions specified in the flowcharts and / or block diagrams. Figure 1 The functions specified in a flow or multiple flows and / or blocks Figure 1 The device that implements the functions specified in a flow or multiple flows and / or blocks

[0044] The program code may be implemented in any combination of one or more programming languages including an object oriented programming language such as Java, C++ or the like, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's computing device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device or entirely on the remote computing device or server. The user computing device may be a mobile device such as a cell phone, a smart phone, a tablet computer, a laptop computer, a desktop computer, or the like.

[0045] In the case of using a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (for example, using an Internet service provider to connect through the Internet).

[0046] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device that implements the flow Figure 1 one or more flows and / or blocks Figure 1 one or more blocks or a plurality of blocks.

[0047] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions executed on the computer or other programmable apparatus provide steps for implementing the flow Figure 1 one or more flows and / or blocks Figure 1 one or more blocks or a plurality of blocks.

[0048] Based on the same inventive concept, the embodiment of the present application also provides a computer program product, wherein the computer program is executed by a processor to realize the large hydro-generator start-stop application automatic reminding method.

[0049] The above-described embodiments are merely intended to express the specific implementation of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the protection scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application.

[0050] This Background section is intended to provide a general overview of the context of the application, the work of the current named inventors, to the extent the work is associated with the present application, and the work of others in the field of the application to the extent the work is associated with the present application, and to the extent the work described in this section is associated with the present application, neither expressly nor impliedly, is admitted to be prior art to the present application.

Claims

1. An automatic reminder method for starting and stopping applications of large hydro-generators, characterized in that, include: Step S1: Obtain the number of grid-connected units Nt, and calculate the lower limit P1min / upper limit P1max of the first stable zone of the entire plant and the lower limit P1min / upper limit P1max of the second stable zone of the entire plant under the current operating combination. Step S2: Receive the time Tk, power generation plan Pk, and total number of power plant units N at point k of the daily power generation plan from the monitoring system, and calculate whether the power generation plan is feasible at each moment of the day under the current water head; where k = 0, ..., 287; Step S3: If the power generation plan at point k is feasible under the current water head, calculate the characteristic values ​​Nkmin and Nkmax of the number of operating units at point k. Step S4: Calculate the number of units that need to be started or stopped at point k, ▽Nk, and determine the time and number of units for the monitoring system to remind the duty officer to apply to the dispatcher for start-up and shutdown.

2. The automatic reminder method for starting and stopping large hydro-generator applications according to claim 1, characterized in that, Step S1 includes: The monitoring system obtains the lower limit P11 / upper limit P12 of the single unit head in the current stable zone 1 and the lower limit P21 / upper limit P22 of the stable zone 2 by importing the AGC-unit head-active power correspondence set value table, and calculates the lower limit P1min / upper limit P1max of the stable zone 1 and the lower limit P2min / upper limit P2max of the stable zone 2 of the entire plant at the current time.

3. The automatic reminder method for starting and stopping large hydro-generator applications according to claim 2, characterized in that, The calculation formulas for the lower limit P1min / upper limit P1max of the first stable region of the entire plant and the lower limit P2min / upper limit P2max of the second stable region of the entire plant are as follows: P1min=P11*Nt P1max=P12*Nt P2min=P21*Nt P2max = P22 * Nt.

4. The automatic reminder method for starting and stopping large hydro-generator applications according to claim 3, characterized in that, Step S2 includes: If Pk < P11 or P12 < Pk < P21 or Pk > P22*N, the monitoring system reminds the duty officer to apply to the dispatcher to modify the power generation plan at point k; otherwise, it determines that the power generation plan at point k on that day is feasible.

5. The automatic reminder method for starting and stopping large hydro-generator applications according to claim 4, characterized in that, The formula for calculating Nkmin in step S3 is as follows: Nkmin=roundup(Pk / P22).

6. The automatic reminder method for starting and stopping large hydro-generator applications according to claim 5, characterized in that, In step S3, Nkmax is determined according to the following process: If Pk<P1min, Nkmax=roundown(Pk / P11); If P1min≤Pk≤P1max, then Nkmax=Nt; If P1max < Pk < P2min, then Nkmax = roundown(Pk / P21); If Pk≥P2min, then Nkmax=Nt; in: The roundup(x) function is a round-up function that returns the smallest integer not less than x; the roundown(x) function is a round-down function that returns the largest integer not greater than x.

7. The automatic reminder method for starting and stopping large hydro-generator applications according to claim 6, characterized in that, Step S4 includes: If Nt < Nkmin, ▽Nk = Nkmin - Nt, the monitoring system will remind the duty officer to request the dispatcher to start ▽Nk units at time T(k-12); If Nt > Nkmax, then ▽Nk = Nt - Nkmax; the monitoring system will remind the duty officer to request the dispatcher to shut down ▽Nk units at time T(k-12); Otherwise, ▽Nk=0, and there is no need to start or stop the machine at point k.

8. An electronic device, characterized in that, include: At least one processor; and a memory communicatively connected to the at least one processor; The memory stores instructions that can be executed by the at least one processor. By executing the instructions stored in the memory, the at least one processor causes the at least one processor to perform the automatic reminder method for starting and stopping large hydro-generators as described in any one of claims 1-7.

9. A computer terminal storage medium storing computer terminal executable instructions, characterized in that, The computer terminal can execute instructions for performing the automatic reminder method for starting and stopping large hydro-generator applications as described in any one of claims 1-7.

10. A computer program product, characterized in that, When the computer program is executed by the processor, it implements the automatic reminder method for starting and stopping large hydro-generators as described in any one of claims 1-7.

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