Power generation side unit load coordinated control method and device, terminal, storage medium

Abstract

The present application provides a method and device, a terminal, and a storage medium for coordinated control of unit loads on the power generation side. The method includes: obtaining the emergency load in the current power grid, the output information of the generating units, and the energy storage information of the energy storage device; calculating the charging time to meet the emergency load based on the emergency load, the output information of the generating units, and the energy storage information of the energy storage device; determining the classification according to the emergency load and the charging time to meet the emergency load; and performing coordinated control according to the load coordination strategy corresponding to the classification. Wherein, the output information of the generating units includes the output power of the power generation equipment, and the energy storage information of the energy storage device includes the output power of the energy storage device and the remaining energy of the energy storage device. The present application can effectively improve the timeliness, flexibility, and accuracy of emergency load coordination, and the coordinated control is more targeted.

Description

Technical Field

[0001] The present application relates to the field of power technologies, and in particular, to a method and device for coordinated control of unit loads on the power generation side, a terminal, and a storage medium. Background Art

[0002] With the development of the power system and the increase in the installed capacity of new energy, the interaction between the power source and the power grid has been continuously increasing. The generator set no longer only considers meeting the charging demand of the device to be charged through its own power generation, but realizes the coordinated control of the load through the interaction of information and energy between the generator set and the power grid.

[0003] The prior art mainly relies on four methods for the coordinated control of generator sets on the power generation side: 1) automatically tracking the random changes of the load; 2) maintaining the stability of the system frequency by controlling the frequency deviation value as close to zero as possible; 3) maintaining the exchange power of the tie line within the interval at a preset value; 4) adjusting the power of the generator set according to the number of the periodic load. The main problems existing in the above four methods for coordinated control are as follows: For loads with small power fluctuations, they may not be monitored, there is a delay in coordinated control, and sometimes a certain coordinated control method cannot meet most of the coordinated control requirements. Therefore, when performing load coordinated control according to the prior art, there are still problems of untimely coordinated control, low flexibility, and low accuracy. Summary of the Invention

[0004] Embodiments of the present application provide a method and device for coordinated control of unit loads on the power generation side, a terminal, and a storage medium to solve the problems of untimely coordinated control, low flexibility, and low accuracy in the prior art.

[0005] In a first aspect, embodiments of the present application provide a method for coordinated control of unit loads on the power generation side, including:

[0006] Obtaining emergency loads in the current power grid, output information of the generator set, and energy storage information of the energy storage device;

[0007] Calculating the charging time required to meet the emergency load based on the emergency load, the output information of the generator set, and the energy storage information of the energy storage device;

[0008] Determining a classification based on the emergency load and the charging time required to meet the emergency load;

[0009] Performing coordinated control according to the load coordination strategy corresponding to the classification;

[0010] Wherein, the output information of the generator set includes the output power of the power generation device, and the energy storage information of the energy storage device includes the output power of the energy storage device and the remaining energy of the energy storage device.

[0011] In a possible implementation, calculating the charging time to meet the emergency load according to the emergency load, the output information of the generator set, and the energy storage information of the energy storage device includes:

[0012]

[0013] where T is the charging time to meet the emergency load, T 1 is the charging time when the energy storage device can meet the energy demand of the emergency load, T 2 is the part of the energy demand of the emergency load that the energy storage device cannot meet. When the energy storage device cannot meet the energy demand of the emergency load, the charging time required for supplementary supply by the power generation device, P 出 is the output power of the power generation device, P is the output power of the energy storage device, Q' is the energy demand of the emergency load, and Q is the remaining energy of the energy storage device.

[0014] In a possible implementation, before determining the grading, calculate the grading index:

[0015]

[0016] where S is the grading index, P is the preset power threshold, P 0 is the power per unit charging time, T is the charging time to meet the emergency load, T 0 is the preset charging time threshold, T is the charging time to meet the emergency load, and Q' is the energy demand of the emergency load.

[0017] In a possible implementation, the method for determining the grading is:

[0018]

[0019] where D is the grading number, L is the first-level classification judgment threshold, S is the grading index, P is the preset power threshold, P 0 is the power per unit charging time, T is the charging time to meet the emergency load, T 0 is the preset charging time threshold, and T is the charging time to meet the emergency load.

[0020] In a possible implementation, the coordinated control according to the load coordination strategy corresponding to the grading includes:

[0021] Calculate the grading corresponding to each current emergency load, and extract the first emergency load, the second emergency load, the third emergency load, and the fourth emergency load among them;

[0022] Determine the corresponding load coordination strategy according to the grading corresponding to each current emergency load for coordinated control;

[0023] The first emergency load is the emergency load with a classification number of 1, the second emergency load is the emergency load with a classification number of 2, the third emergency load is the emergency load with a classification number of 3, and the fourth emergency load is the emergency load with a classification number of 4.

[0024] In a possible implementation, the load coordination strategy includes:

[0025] The load coordination strategy for the first emergency load is to supply power to the first emergency load through the energy storage device and the power increment of the full power generation of the power generation side;

[0026] The load coordination strategy for the second emergency load is to supply power to the second emergency load through the total power increment in the full power generation state;

[0027] The load coordination strategy for the third emergency load is to supply power to the third emergency load with the remaining power after supplying power to the first and second emergency loads through the total power increment in the full power generation state;

[0028] The load coordination strategy for the fourth emergency load is to supply power to the fourth emergency load with the remaining power after supplying power to the first, second, and third emergency loads through the energy storage device and the total power increment in the full power generation state;

[0029] The method for determining the total power increment in the full power generation state is:

[0030] ΔP ALL = ΔP 1 + ΔP 2 (4)

[0031] Wherein, ΔP ALL is the total power increment in the full power generation state, ΔP 1 is the power increment of starting the active power source, and ΔP 2 is the power increment of the full power generation of the power generation side.

[0032] In a possible implementation, the emergency loads among the first emergency load, the second emergency load, the third emergency load, and the fourth emergency load are numbered in sequence to obtain a first emergency load set, a second emergency load set, a third emergency load set, and a fourth emergency load set;

[0033] Calculate the power supply demand under each classification:

[0034] P D = ∑P Dj , D = 1, 2, 3, 4; P Dj ∈M D (5)

[0035] Among them, P D is the power supply demand at each level, D is the level number, and P Dj is the emergency load at a certain level number, M D is the first emergency load set, the second emergency load set, the third emergency load set or the fourth emergency load set, and j is the number of the emergency load in each emergency load set.

[0036] In a second aspect, an embodiment of the present application provides a power generation side unit load coordination control device, including:

[0037] A data acquisition module, configured to acquire the emergency load in the current power grid, the output information of the generator set, and the energy storage information of the energy storage device;

[0038] A charging time determination module, configured to calculate the charging time that meets the emergency load according to the emergency load, the output information of the generator set, and the energy storage information of the energy storage device;

[0039] A level determination module, configured to determine the level according to the emergency load and the charging time that meets the emergency load;

[0040] An execution module, configured to perform coordination control according to the load coordination strategy corresponding to the level;

[0041] Among them, the output information of the generator set includes the output power of the power generation equipment, and the energy storage information of the energy storage device includes the output power of the energy storage device and the remaining energy of the energy storage device.

[0042] In a third aspect, an embodiment of the present application provides a terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the method described in the first aspect or any possible implementation manner of the first aspect above are implemented.

[0043] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the method described in the first aspect or any possible implementation manner of the first aspect above are implemented.

[0044] The beneficial effects of the power generation side unit load coordination control method, device, terminal, and storage medium provided by the embodiments of the present application are as follows:

[0045] Most of the existing technologies start coordinated control only after large power fluctuations and long-term fluctuations, or directly maintain a certain coordinated control method. By obtaining the emergency load in the current power grid, this application can monitor the power fluctuations in the power grid in real time and can also perform coordinated control in a timely manner after obtaining the emergency load. When dealing with the emergency load, the classification is determined according to the emergency load in the current power grid and the charging time to meet the emergency load, and the emergency load is coordinated and controlled through the load coordination strategy corresponding to the classification. Compared with the coordinated control method in the existing technology, this application can effectively improve the timeliness, flexibility and accuracy of emergency load coordination, and the coordinated control is more targeted. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0047] Figure 1 is a schematic flowchart of a method for coordinated control of generator-side unit loads provided by an embodiment of the present application;

[0048] Figure 2 is a schematic structural diagram of a device for coordinated control of generator-side unit loads provided by an embodiment of the present application;

[0049] Figure 3 is a schematic diagram of a terminal for coordinated control of generator-side unit loads provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0050] In the following description, specific details such as specific system structures and technologies are proposed for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0051] To make the purpose, technical solutions and advantages of the present application clearer, the following will be illustrated through specific embodiments with reference to the drawings.

[0052] Figure 1 is a schematic flowchart of a method for coordinated control of generator-side unit loads provided by an embodiment of the present application.

[0053] As Figure 1 shown, the method includes:

[0054] Step 101: Obtain the emergency load in the current power grid, the output information of the generator sets, and the energy storage information of the energy storage devices.

[0055] In this embodiment, the emergency load in the current power grid can be collected by sensors. Specifically, collecting the emergency load in the current power grid by sensors includes: obtaining the status of the charging piles at the current moment, and obtaining the charging demand power of each vehicle; obtaining the total energy required for each vehicle to be fully charged and the earliest return time at the current moment; and sequentially forming the emergency load in the current power grid. The sensors collect the emergency load in the current power grid, and then form the emergency load. The emergency load is a load with a total energy and controllable duration. Then, through the joint cooperation of the emergency load and the power source, smaller fluctuations in the power grid can be achieved. The charging demand power is the emergency load that needs to be coordinated and controlled. The energy required for each vehicle to be fully charged can be used as the energy demand corresponding to each emergency load.

[0056] In this embodiment, the output information of the generator sets in the current power grid can be obtained by sensors. Specifically, obtaining the output information of the generator sets in the current power grid by sensors includes: obtaining the output power and output voltage of each power generation device at the current moment through a power sensor and a voltage sensor; and storing the output power and output voltage as the output information of the generator sets. The output power of each power generation device can be sequentially collected by sensors, and then real-time feedback of multiple output powers can be achieved. The output power can be updated in a timely manner, which is beneficial to improving the accuracy of charging time calculation and also beneficial to improving the accuracy of grading and load coordination control.

[0057] In this embodiment, the energy storage information of the energy storage devices in the current power grid can be collected in real time by sensors. Specifically, collecting the energy storage information of the energy storage devices in the current power grid in real time by sensors includes: obtaining the remaining power capacity, the maximum discharge power (the output power of the energy storage device), and the total capacity of the energy storage device at the current moment through sensors; and storing the remaining power capacity, the maximum discharge power, and the total capacity as the energy storage information of the energy storage device. The remaining power capacity of the current energy storage device can be obtained by sensors, and the capacitance and the total capacity are stored together as the data basis for calculating the grading index in the subsequent process.

[0058] Step 102: Calculate the charging time that meets the emergency load according to the emergency load, the output information of the generator sets, and the energy storage information of the energy storage devices.

[0059] In this embodiment, the energy demand corresponding to each emergency load is mainly met through the power generation of the generator set and the energy supply of the energy storage device. The energy storage information of the energy storage device includes the output power of the energy storage device and the remaining energy of the energy storage device, and may also include the total capacity of the energy storage device or the remaining battery capacity, etc. The output power of the energy storage device may be the maximum power of discharging. In this embodiment, the power supply is first carried out by the energy storage device. When the energy of the energy storage device can meet the energy demand of the emergency load, the ratio of the energy demand of the emergency load to the output power of the energy storage device is the charging time to meet the emergency load. When the energy of the energy storage device in this embodiment cannot meet the energy demand of the emergency load, the energy storage device and the power generation device need to supply energy simultaneously. The charging time to meet the emergency load is calculated according to the remaining energy of the energy storage device / the output power of the energy storage device + (the energy demand of the emergency load - the remaining energy of the energy storage device) / the output power of the energy storage device.

[0060] Step 103: Determine the classification according to the emergency load and the charging time to meet the emergency load.

[0061] In this embodiment, the classification can be determined according to the emergency loads in the current power grid, the output information of the generator set, and the energy storage information of the energy storage device. In this embodiment, the power demand and the power demand time (that is, the charging time to meet the emergency load) of each emergency load at the current moment can be obtained; the power per unit time is calculated by dividing the power demand by the power demand time; the classification index is calculated according to the power per unit time and the charging time to meet the emergency load; the classification number is calculated according to the classification index, the power per unit time, and the charging time to meet the emergency load. In this embodiment, it is necessary to calculate the corresponding charging time for each emergency load, and each emergency load is classified according to each emergency load and the corresponding charging time to meet each emergency load. In this application, the classification can be determined through the power per unit time and the charging time to meet the emergency load, which can make the classification more accurate.

[0062] Step 104: Perform coordinated control according to the load coordination strategy corresponding to the classification.

[0063] In this embodiment, the output information of the generator set includes the output power of the power generation device, and the energy storage information of the energy storage device includes the output power of the energy storage device and the remaining energy of the energy storage device. In this embodiment, the emergency loads can be divided into 4 types, and each type corresponds to a different load coordination strategy. The appropriate strategy can be determined according to the type of the emergency load for coordinated control, which improves the accuracy of the load coordinated control.

[0064] Most of the existing technologies start coordinated control only after large power fluctuations and long-term fluctuations, or directly maintain a certain coordinated control method. By obtaining the emergency load in the current power grid, the present application can monitor the power fluctuations in the power grid in real time and perform coordinated control in a timely manner after obtaining the emergency load. When dealing with the emergency load, according to the emergency load in the current power grid and the charging time to meet the emergency load, grading is determined, and the emergency load is coordinated and controlled through the load coordination strategy corresponding to the grading. Compared with the coordinated control method in the existing technology, the present application can effectively improve the timeliness, flexibility and accuracy of emergency load coordination, and the coordinated control is more targeted.

[0065] In a possible implementation manner, calculating the charging time to meet the emergency load according to the emergency load, the output information of the generator set and the energy storage information of the energy storage device includes:

[0066]

[0067] where T is the charging time to meet the emergency load, T 1 is the charging time when the energy storage device can meet the energy demand of the emergency load, and T 2 is the part of the energy demand of the emergency load that the energy storage device cannot meet when the energy storage device cannot meet the energy demand of the emergency load, and the charging time required for supplementary supply by the power generation device, P 出 is the output power of the power generation device, P is the output power of the energy storage device, Q' is the energy demand of the emergency load, and Q is the remaining energy of the energy storage device.

[0068] In this embodiment, the method for calculating the charging time can be determined by comparing the energy demand of the emergency load and the remaining energy of the energy storage device. In the present application, when the energy storage device can meet the energy demand of the emergency load, only the energy storage device supplies power. When the energy storage device cannot meet the energy demand of the emergency load, the energy storage device can supply power preferentially, and the part that the energy storage device cannot meet can be supplied by the power generation device. In this embodiment, preferentially supplying power by the energy storage device can well solve the problem that the output power of the power generation device increases slowly, and can effectively shorten the charging time.

[0069] In a possible implementation manner, before determining the grading, calculate the grading index:

[0070]

[0071] where S is the grading index, P is the preset power threshold, P 0 is the power per unit charging time, T is the charging time to meet the emergency load, T 0is a preset charging time threshold, T is the charging time to meet the emergency load, and Q' is the energy demand of the emergency load.

[0072] In this embodiment, after calculating the power per unit charging time, the grading can be determined according to the power per unit charging time and the charging time to meet the emergency load.

[0073] In a possible implementation, the method for determining the grading is:

[0074]

[0075] where D is the grading number, L is the first-level classification judgment threshold, S is the grading index, P is the preset power threshold, and P 0 is the power per unit charging time, T is the charging time to meet the emergency load, and T 0 is the preset charging time threshold, and T is the charging time to meet the emergency load.

[0076] In this embodiment, the first-level classification judgment threshold, the preset charging time threshold, and the preset power threshold can be set according to actual needs and can be modified. In this embodiment, since the values of each emergency load may be different and the calculated charging times may also be different, for each emergency load, it is possible to preferentially calculate the grading index to determine whether the constraint condition of D = 1 is satisfied, and then determine whether the constraint conditions of D = 2, D = 3, and D = 4 are satisfied; it is also possible to preferentially determine whether the constraint conditions of D = 2, D = 3, and D = 4 are satisfied, and then determine the constraint condition of D = 1. In this embodiment, the grading numbers actually correspond to 1, 2, 3, and 4, and these grading numbers correspond to the first emergency load, the second emergency load, the third emergency load, and the fourth emergency load respectively. Among them, the fourth emergency load does not need to be processed temporarily, and for the first emergency load, the second emergency load, and the third emergency load, the power supply is completed through the mutual cooperation of the power supply and the network.

[0077] In a possible implementation, the coordinated control is performed according to the load coordination strategy corresponding to the grading, including:

[0078] Calculate the grading corresponding to each current emergency load, and extract the first emergency load, the second emergency load, the third emergency load, and the fourth emergency load.

[0079] Determine the corresponding load coordination strategy according to the grading corresponding to each current emergency load for coordinated control.

[0080] The first emergency load is the emergency load with the grading number 1, the second emergency load is the emergency load with the grading number 2, the third emergency load is the emergency load with the grading number 3, and the fourth emergency load is the emergency load with the grading number 4.

[0081] In this embodiment, by classifying emergency loads, multiple emergency loads are divided into the same type, and the same load coordination strategy is adopted for the emergency loads of the same type for coordinated control, which is simple in operation and reduces the workload.

[0082] In a possible implementation manner, the load coordination strategy includes:

[0083] The load coordination strategy for the first emergency load is to supply power to the first emergency load through the energy storage device and the power increment of the full-power generation of the power generation side.

[0084] The load coordination strategy for the second emergency load is to supply power to the second emergency load through the total power increment in the full-power generation state.

[0085] The load coordination strategy for the third emergency load is to supply power to the third emergency load with the remaining power after supplying power to the first emergency load and the second emergency load through the total power increment in the full-power generation state.

[0086] The load coordination strategy for the fourth emergency load is to supply power to the fourth emergency load with the remaining power after supplying power to the first emergency load, the second emergency load, and the third emergency load through the energy storage device and the total power increment in the full-power generation state.

[0087] The method for determining the total power increment in the full-power generation state is:

[0088] ΔP ALL =ΔP 1 +ΔP 2 (4)

[0089] Wherein, ΔP ALL is the total power increment in the full-power generation state, ΔP 1 is the power increment of starting the active power supply, and ΔP 2 is the power increment of the full-power generation of the power generation side.

[0090] In this embodiment, the order of power supply is the first emergency load, the second emergency load, the third emergency load, and the fourth emergency load in sequence. The first emergency load is mainly supplied with power through the energy storage device and the power increment of the full-power generation of the power generation side. For example, the power demand of the first emergency load is P 1 , the power demand of the second emergency load is P 2 , the power demand of the third emergency load is P 3 , the power that the energy storage device can supply is P A , and the power that the power increment of the full-power generation of the power generation side can supply is P B . At this time, the additional power paid by the energy storage: P A =80%P 1 , the power extracted by the load: P B= 20%P 1 , that is to say, 80% of the power supply for the first emergency load is provided by the energy storage device, and 20% of the power supply is provided by the power increment of full power generation on the power generation side. Then, for the second emergency load, the load coordination strategy for the second emergency load is to supply power to the second emergency load with the remaining power after supplying power to the first emergency load through the total power increment in the full power generation state. At the same time, the remaining power after supplying power to the first emergency load and the second emergency load with the total power increment in the full power generation state is P T = ΔP ALL - P 2 - 20%P 1 , the remaining power after the energy storage device and the total power increment in the full power generation state supply power to the first emergency load, the second emergency load, and the third emergency load is P N = P A + ΔP ALL - P 1 - P 2 - P 3 . In this embodiment, when there is no first emergency load, the battery can be charged when the power is sufficient; during the power supply process, when there is no first emergency load and second emergency load, the third-level emergency load is powered by the total power increment in the full power generation state; when there is no first emergency load, second emergency load, and third emergency load, there is no need for the total power increment in the full power generation state, and only the remaining power of the energy storage device is used to supply power to the fourth emergency load.

[0091] In this embodiment, the power supply for the three levels (first, second, and third) of emergency loads can be carried out in real time. For the first emergency load, 80% of the power is directly provided by the energy storage device. For the second emergency load, all the power is provided by the total power increment in the full power generation state, and for the third emergency load, it is directly provided by the remaining total power increment in the full power generation state.

[0092] In a possible implementation manner, the emergency loads among the first emergency load, the second emergency load, the third emergency load, and the fourth emergency load are numbered in sequence to obtain a first emergency load set, a second emergency load set, a third emergency load set, and a fourth emergency load set.

[0093] Calculate the power supply demand at each classification level:

[0094] P D = ∑P Dj , D = 1, 2, 3, 4; P Dj ∈M D (5)

[0095] Among them, P D is the power supply demand at each classification level, D is the classification number, PDj is an emergency load under a certain grading number, M D is the first emergency load set, the second emergency load set, the third emergency load set or the fourth emergency load set, and j is the number of the emergency load in each emergency load set.

[0096] In this embodiment, sequential numbering is automatically implemented through existing tools. The power supply demand of the first emergency load is The power supply demand of the second emergency load is The power supply demand of the third emergency load is The power supply demand of the fourth emergency load is

[0097] In the embodiment of the present application, through the communication between the load and the network, it can be realized that first, the energy storage device supplies power. After waiting for the power of the power supply to increase, through the cooperation between the power supply and the load, the power supply of the power generation device can be realized. Considering that the response speed of the energy storage device is relatively fast and it can quickly output power, but the power generation side cannot quickly increase the power, therefore, based on the solution of the embodiment of the present application, the timeliness and accuracy of load coordination can be improved.

[0098] In this embodiment, the core focus is to quickly formulate a coordinated control method between the emergency load and the power generation side units according to the emergency load demand of the charging vehicle. Through the way of jointly supplying power by the energy storage device and the power generation device, a controllable and stable load coordination control method is formed. The present application can improve the stability of the system by obtaining each emergency load and performing real-time and rapid joint control among the units, the emergency load, the energy storage device and the power generation device. The solution proposed in the present application in combination with the specific energy storage state and the characteristic of the slow increase of power on the power generation side enables the emergency load and the power generation side units to cooperate deeply, which can cope with the influence caused by extremely large power fluctuations. Through the joint cooperation of the emergency load and the power generation side units, the fluctuation of the power grid can be reduced and the system stability can be improved.

[0099] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not mean the order of execution. The order of execution of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0100] The following is the device embodiment of the present application. For the details not described in detail, reference can be made to the corresponding method embodiment above.

[0101] Figure 2 The structural schematic diagram of the power generation side unit load coordination control device provided by the embodiment of the present application is shown. For the convenience of description, only the part related to the embodiment of the present application is shown and is described in detail as follows:

[0102] As Figure 2As shown in the figure, the power generation side unit load coordination control device 20 includes:

[0103] A data acquisition module 21, configured to acquire the emergency load in the current power grid, the output information of the generator set, and the energy storage information of the energy storage device.

[0104] A charging time determination module 22, configured to calculate the charging time that meets the emergency load according to the emergency load, the output information of the generator set, and the energy storage information of the energy storage device.

[0105] A grading determination module 23, which determines the grading according to the emergency load and the charging time that meets the emergency load.

[0106] An execution module 24, configured to perform coordinated control according to the load coordination strategy corresponding to the grading.

[0107] Wherein, the output information of the generator set includes the output power of the power generation equipment, and the energy storage information of the energy storage device includes the output power of the energy storage device and the remaining energy of the energy storage device.

[0108] In a possible implementation manner, the charging time determination module 22 is configured to calculate the charging time that meets the emergency load according to the emergency load, the output information of the generator set, and the energy storage information of the energy storage device.

[0109] Calculating the charging time that meets the emergency load according to the emergency load, the output information of the generator set, and the energy storage information of the energy storage device includes:

[0110]

[0111] Wherein, T is the charging time that meets the emergency load, T 1 is the charging time when the energy storage device can meet the energy demand of the emergency load, T 2 is the part that the energy storage device cannot meet the energy demand of the emergency load when the energy storage device cannot meet the energy demand of the emergency load, and the charging time required for supplementary supply by the power generation equipment, P 出 is the output power of the power generation equipment, P is the output power of the energy storage device, Q' is the energy demand of the emergency load, and Q is the remaining energy of the energy storage device.

[0112] In a possible implementation manner, the grading determination module 23 is configured to calculate a grading index before determining the grading:

[0113]

[0114] Wherein, S is the grading index, P is a preset power threshold, P 0 is the power per unit charging time, T is the charging time that meets the emergency load, T 0is a preset charging time threshold, T is the charging time to meet the emergency load, and Q' is the energy demand of the emergency load.

[0115] In a possible implementation, the grading determination module 23 is used to determine the grading.

[0116] The method for determining the grading is as follows:

[0117]

[0118] Where D is the grading number, L is the first-level classification judgment threshold, S is the grading index, P is the preset power threshold, and P 0 is the power per unit charging time, T is the charging time to meet the emergency load, and T 0 is the preset charging time threshold, and T is the charging time to meet the emergency load.

[0119] In a possible implementation, the execution module 24 is used to perform coordinated control according to the load coordination strategy corresponding to the grading.

[0120] Performing coordinated control according to the load coordination strategy corresponding to the grading includes:

[0121] Calculate the grading corresponding to each current emergency load, and extract the first emergency load, the second emergency load, the third emergency load, and the fourth emergency load among them.

[0122] Determine the corresponding load coordination strategy according to the grading corresponding to each current emergency load for coordinated control.

[0123] The first emergency load is the emergency load with a grading number of 1, the second emergency load is the emergency load with a grading number of 2, the third emergency load is the emergency load with a grading number of 3, and the fourth emergency load is the emergency load with a grading number of 4.

[0124] In a possible implementation, the execution module 24 is used to determine the load coordination strategy.

[0125] The load coordination strategy includes:

[0126] The load coordination strategy for the first emergency load is to supply power to the first emergency load through the energy storage device and the power increment of the full power generation of the power generation side.

[0127] The load coordination strategy for the second emergency load is to supply power to the second emergency load through the total power increment in the full power generation state.

[0128] The load coordination strategy for the third emergency load is to supply power to the third emergency load with the remaining power after supplying power to the first emergency load and the second emergency load through the total power increment in the full power generation state.

[0129] The load coordination strategy for the fourth emergency load is to supply power to the fourth emergency load with the remaining power after supplying power to the first, second, and third emergency loads through energy storage devices and the total power increment in the full-load state.

[0130] The method for determining the total power increment in the full-load state is as follows:

[0131] ΔP ALL =ΔP 1 +ΔP 2 (4)

[0132] where, ΔP ALL is the total power increment in the full-load state, ΔP 1 is the power increment for starting the active power source, and ΔP 2 is the power increment of the full-load power generation side.

[0133] In a possible implementation, the execution module 24 is configured to sequentially number the emergency loads among the first, second, third, and fourth emergency loads to obtain a first emergency load set, a second emergency load set, a third emergency load set, and a fourth emergency load set, and calculate the power supply demand at each classification level.

[0134] Calculate the power supply demand at each classification level:

[0135] P D =∑P Dj , D = 1, 2, 3, 4; P Dj ∈M D (5)

[0136] where, P D is the power supply demand at each classification level, D is the classification number, P Dj is the emergency load at a certain classification number, M D is the first emergency load set, the second emergency load set, the third emergency load set, or the fourth emergency load set, and j is the number of the emergency load in each emergency load set.

[0137] Figure 3 is a schematic diagram of the load coordination control terminal of the power generation side unit provided by the embodiment of the present application. As Figure 3 shown, the terminal 30 of this embodiment includes: a processor 31, a memory 32, and a computer program 33 stored in the memory 32 and executable on the processor 31. When the processor 31 executes the computer program 33, it implements the steps in the embodiments of the above various power generation side unit load coordination control methods, such as Figure 1 shown in 101 to 104. Alternatively, when the processor 31 executes the computer program 33, it implements the functions of each module in the above device embodiments, such asFigure 2 The functions of the modules 21 to 24 shown.

[0138] Exemplarily, the computer program 33 can be divided into one or more modules. One or more modules are stored in the memory 32 and executed by the processor 31 to complete this application. One or more modules can be a series of computer program instruction segments capable of completing specific functions, and these instruction segments are used to describe the execution process of the computer program 33 in the terminal 30. For example, the computer program 33 can be divided into Figure 2 the modules 21 to 24 shown.

[0139] The terminal 30 can be a computing device such as a desktop computer, a notebook, a palm computer, and a cloud server. The terminal 30 may include, but is not limited to, a processor 31 and a memory 32. Those skilled in the art can understand that Figure 3 only these are examples of the terminal 30 and do not constitute a limitation on the terminal 30. It may include more or fewer components than shown in the figure, or combine some components, or different components. For example, the terminal may further include input / output devices, network access devices, a bus, etc.

[0140] The so-called processor 31 may be a central processing unit (CPU), or may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or this processor may also be any conventional processor, etc.

[0141] The memory 32 may be an internal storage unit of the terminal 30, such as the hard disk or memory of the terminal 30. The memory 32 may also be an external storage device of the terminal 30, such as a plug-in hard disk equipped on the terminal 30, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. Further, the memory 32 may also include both the internal storage unit and the external storage device of the terminal 30. The memory 32 is used to store the computer program and other programs and data required by the terminal. The memory 32 may also be used to temporarily store the data that has been output or will be output.

[0142] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above-mentioned division of each functional unit and module is used as an example. In actual applications, the above-mentioned functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiments can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of this application. The specific working processes of the units and modules in the above system can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated here.

[0143] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailed or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0144] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or by a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professionals can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0145] In the embodiments provided in this application, it should be understood that the disclosed device / terminal and method can be implemented in other ways. For example, the device / terminal embodiments described above are only illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of devices or units can be in electrical, mechanical or other forms.

[0146] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0147] In addition, in each embodiment of the present application, each functional unit can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0148] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, to implement all or part of the processes in the above-described embodiment methods of the present application, it can also be completed by a computer program instructing relevant hardware. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above-described embodiments of various power generation side unit load coordination control methods can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file, or some intermediate form, etc. The computer-readable medium can include: any entity or device that can carry the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disc, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc. It should be noted that the content included in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0149] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for coordinated control of generator set loads on the power generation side, characterized in that, it includes: Obtain the emergency load in the current power grid, the output information of the generator set, and the energy storage information of the energy storage device; Calculate the charging time to meet the emergency load based on the emergency load, the output information of the generator set, and the energy storage information of the energy storage device; Determine the grading based on the emergency load and the charging time to meet the emergency load; Carry out coordinated control according to the load coordination strategy corresponding to the grading; wherein, the output information of the generator set includes the output power of the power generation equipment, and the energy storage information of the energy storage device includes the output power of the energy storage device and the remaining energy of the energy storage device; The calculating the charging time to meet the emergency load based on the emergency load, the output information of the generator set, and the energy storage information of the energy storage device includes: （1） Among them, is the charging time to meet the charging time of the emergency load, is the charging time when the energy storage device can meet the energy demand of the emergency load, is the part that the energy storage device cannot meet the energy demand of the emergency load when the energy storage device cannot meet the energy demand of the emergency load, and the charging time required for supplementary supply by the power generation device, is the output power of the power generation device, is the output power of the energy storage device, is the energy demand of the emergency load, is the remaining energy of the energy storage device; Before determining the grading, calculate the grading index: （2） Among them, is the grading index, is the preset power threshold, is the power per unit charging time, is the charging time to meet the emergency load, is the preset charging time threshold, is the charging time to meet the emergency load, is the energy demand of the emergency load.

2. The method according to claim 1, characterized in that, The method for determining the grading is: （3） Among them, is the grading number, is the first-level classification judgment threshold, is the grading index, is the preset power threshold, is the power per unit charging time, is the charging time to meet the emergency load, is the preset charging time threshold, is the charging time to meet the emergency load.

3. The method according to claim 1, characterized in that, The carrying out coordinated control according to the load coordination strategy corresponding to the grading includes: Calculate the grading corresponding to each current emergency load, and extract the first emergency load, the second emergency load, the third emergency load, and the fourth emergency load among them; Determine the corresponding load coordination strategy according to the grading corresponding to each current emergency load and carry out coordinated control; The first emergency load is the emergency load with a grading number of 1, the second emergency load is the emergency load with a grading number of 2, the third emergency load is the emergency load with a grading number of 3, and the fourth emergency load is the emergency load with a grading number of 4.

4. The method according to claim 3, characterized in that, The load coordination strategy includes: The load coordination strategy for the first emergency load is to supply power to the first emergency load through the energy storage device and the power increment of the full power generation of the power generation side; The load coordination strategy for the second emergency load is to supply power to the second emergency load through the total power increment in the full power generation state; The load coordination strategy for the third emergency load is to supply power to the third emergency load with the remaining power after supplying power to the first emergency load and the second emergency load through the total power increment in the full power generation state; The load coordination strategy for the fourth emergency load is to supply power to the fourth emergency load with the remaining power after supplying power to the first emergency load, the second emergency load, and the third emergency load through the energy storage device and the total power increment in the full power generation state; The method for determining the total power increment in the full power generation state is: （4） Among them, is the total power increment in the full-load state, is the power increment for starting the active power supply, is the full-load power increment of the power generation side.

5. The method according to claim 3, characterized in that, Number the emergency loads in the first emergency load, the second emergency load, the third emergency load, and the fourth emergency load respectively in sequence to obtain the first emergency load set, the second emergency load set, the third emergency load set, and the fourth emergency load set; Calculate the power supply demand under each grading: （5） Among them, is the power supply demand at each level, is the level number, is the emergency load under a certain level number, is the first emergency load set, the second emergency load set, the third emergency load set or the fourth emergency load set, is the number of the emergency load in each emergency load set.

6. A device for coordinated control of generator set loads on the power generation side, characterized in that, it includes: A data acquisition module, configured to acquire emergency load in the current power grid, output information of a generating set, and energy storage information of an energy storage device; A charging time determination module, configured to calculate a charging time that meets the emergency load according to the emergency load, the output information of the generating set, and the energy storage information of the energy storage device; A classification determination module, configured to determine a classification according to the emergency load and the charging time that meets the emergency load; An execution module, configured to perform coordinated control according to a load coordination strategy corresponding to the classification; Wherein, the output information of the generating set includes the output power of a power generation device, and the energy storage information of the energy storage device includes the output power of the energy storage device and the remaining energy of the energy storage device; The charging time determination module calculates a charging time that meets the emergency load according to the emergency load, the output information of the generating set, and the energy storage information of the energy storage device, including: （1） Among them, is the charging time to meet the charging time of the emergency load, is the charging time when the energy storage device can meet the energy demand of the emergency load, is the part that the energy storage device cannot meet the energy demand of the emergency load when the energy storage device cannot meet the energy demand of the emergency load, and is the charging time required for supplementary supply by the power generation device, is the output power of the power generation device, is the output power of the energy storage device, is the energy demand of the emergency load, is the remaining energy of the energy storage device; Before determining the classification, the classification determination module calculates a classification index: （2） wherein, is the grading index, is the preset power threshold, is the power per unit charging time, is the charging time to meet the emergency load, is the preset charging time threshold, is the charging time to meet the emergency load, is the energy demand of the emergency load.

7. A terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that when the processor executes the computer program, the steps of the method according to any one of claims 1 to 5 above are implemented.

8. A computer-readable storage medium, storing a computer program, characterized in that when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 above are implemented.

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