WO2023086017A2

WO2023086017A2 - Method and apparatus for determining state of phovoltaic power station, device, and readable storage medium

Info

Publication number: WO2023086017A2
Application number: PCT/SG2022/050793
Authority: WO
Inventors: Xiang Li; Ning Xu; Biyun LIU; Liming LUO
Original assignee: Envision Digital International Pte. Ltd.; Shanghai Envision Digital Co., Ltd.
Priority date: 2021-11-12
Filing date: 2022-11-01
Publication date: 2023-05-19
Also published as: CN114069860A; CN114069860B; WO2023086017A3

Abstract

Embodiments of the present disclosure provide a method and apparatus for determining a state of a photovoltaic power station, and a device and a readable storage medium thereof. The method includes: receiving operation state data sent by n types of power station devices in the photovoltaic power station, the n types of power station devices corresponding to n first weight values, an i^th first weight value corresponding to an i^th device type, n being an integer greater than 1, and l≤i≤n; acquiring an operation health condition of the n types of power station devices by matching based on the operation state data, health types in the operation health condition corresponding to second weight values; determining a power station health condition of the photovoltaic power station based on the operation health condition, the first weight values, and the second weight values; and displaying a power station health analysis interface on a terminal, the power station health analysis interface comprising the power station health condition. Operation and maintenance personnel can directly acquire the health condition of the photovoltaic power station from the power station health analysis interface in the terminal, and make different management solutions therefor, thereby effectively and directly maintaining the photovoltaic power station, avoiding waste of unnecessary human resources, and saving a certain amount of generating capacity.

Description

METHOD AND APPARATUS FOR DETERMINING STATE OF PHOVOLTAIC POWER STATION, DEVICE, AND READABLE STORAGE MEDIUM

TECHNICAL FIELD

[0001] Embodiments of the present disclosure relate to the field of new energy, and in particular relate to a method and apparatus for determining a state of a photovoltaic power station, and a device and a readable storage medium thereof.

BACKGROUND

[0002] With the increasing proportion of new energy sources such as wind and light in the energy field, photovoltaics, as a clean energy source, are increasingly favored by domestic and foreign power generation and electricity companies. The photovoltaic industry has good prospects for development. Large power generation groups are holding more and more photovoltaic power generation assets. With the continuous expansion of power generation scale, higher requirements are placed on the reliability, smartness, and accuracy of a monitoring system.

[0003] At present, with the rapid development of the photovoltaic industry, simple device monitoring and data monitoring no longer meet the less manned or unattended requirements of enterprises, such that digital transformation fails to be completely realized. Conventional detection on an operation state of a power station is mainly based on an operation state of a single device in the power station, and when one device in the power station is not in normal operation, the power station is determined to be in an unhealthy state.

[0004] However, in the related art, in the case that the power station is determined to be in an unhealthy state based on the fact that one device in the power station is not in normal operation, whether the power station has an abnormal event is only reflected, while the severity of the abnormal event is not classified, and reasonable decisions fail to be provided for administrative staff. Such blind maintenance for the device in the power station consumes more human resources, and the efficiency of locating the faulty device is low.

SUMMARY

[0005] Embodiments of the present disclosure provide a method and apparatus for determining a state of a photovoltaic power station, and a device and a readable storage medium thereof, which effectively save human resources for power station maintenance. The technical solution is as follows. [0006] In one aspect of the embodiments of the present disclosure, a method for determining a state of a photovoltaic power station is provided. The method includes:

[0007] receiving operation state data sent by n types of power station devices in the photovoltaic power station, the n types of power station devices corresponding to n first weight values, an i^th first weight value corresponding to an i^th device type, n being an integer greater than 1, and 1 < i < n;

[0008] acquiring an operation health condition of the n types of power station devices by matching based on the operation state data, health types in the operation health condition corresponding to second weight values;

[0009] determining a power station health condition of the photovoltaic power station based on the operation health condition, the first weight values, and the second weight values; and

[0010] displaying a power station health analysis interface on a terminal, the power station health analysis interface including the power station health condition.

[0011] In some embodiments, determining the power station health condition of the photovoltaic power station based on the operation health condition, the first weight values, and the second weight values includes:

[0012] determining an ideal value of the n types of power station devices in a healthy state;

[0013] determining a p^th state value of a p^th type of power station devices corresponding to the operation health condition, 1 < p < n;

[0014] determining a sum of n state values corresponding to the n types of power station devices;

[0015] determining a ratio of the sum of the state values to the ideal value as a power station health reference value of the photovoltaic power station; and

[0016] determining, according to a preset reference value-health condition matching table, the power station health condition corresponding to the power station health reference value.

[0017] In some embodiments, the operation health condition includes a healthy state, a sub- healthy state and an unhealthy state, wherein the healthy state corresponds to a first sub-weight, the sub-healthy state corresponds to a second sub-weight, and the unhealthy state corresponds to a third sub -weight; and

[0018] determining the p^th state value of the p^th type of power station devices corresponding to the operation health condition includes:

[0019] determining the number of first devices in the healthy state for the p^th type of power station devices, and determining a first product of the number of the first devices, a first weight value corresponding to the p^th type of power station devices, and the first sub-weight; [0020] determining the number of second devices in the sub-healthy state, and determining a second product of the number of the second devices, the first weight value corresponding to the p^th type of power station devices, and the second sub-weight;

[0021] determining the number of third devices in the unhealthy state, and determining a third product of the number of the third devices, the first weight value corresponding to the p^th type of power station devices, and the third sub-weight; and

[0022] determining a sum of the first product, the second product and the third product as the p^th state value corresponding to the p^th type of power station devices.

[0023] In some embodiments, acquiring the operation health condition of the n types of power station devices by matching based on the operation state data includes:

[0024] acquiring a preset state data-health condition matching table; and

[0025] determining, from the state data-health condition matching table, the operation health condition correspondingly matched with the operation state data.

[0026] In some embodiments, the state data-health condition matching table includes a matching relationship between the device types, the operation health condition, and the operation state data; and

[0027] determining, from the state data-health condition matching table, the operation health condition correspondingly matched with the operation state data includes:

[0028] determining operation state data of a target power station device in the n types of power station devices; and

[0029] determining an operation health condition of the target power station device based on the operation state data of the target power station device and a device type of the target power station device.

[0030] In some embodiments, upon displaying the power station health analysis interface on the terminal, the method further includes:

[0031] determining, for devices with health problems in the n types of power station devices, display priorities of the health problems based on the first weight values and the second weight values; and

[0032] displaying first m devices with the health problems in sequence in the health analysis interface based on the display priorities.

[0033] In some embodiments, determining, for the devices with the health problems in the n types of power station devices, the display priorities of the health problems based on the first weight values and the second weight values includes:

[0034] ranking the devices with the health problems in the n types of power station devices in a descending order based on the first weight values; [0035] determining power station devices of first m device types in the descending order, l<m<n; [0036] ranking, for the power station devices of the first m device types, health problems occurring in each type of power station devices in an ascending order based on the second weight values; and

[0037] determining a display priority of the health problems of the m device types based on the ascending order.

[0038] In another aspect of the embodiments of the present disclosure, an apparatus for determining a state of a photovoltaic power station is provided. The apparatus includes:

[0039] a receiving module, configured to receive operation state data sent by n types of power station devices in the photovoltaic power station, the n types of power station devices corresponding to n first weight values, an i^th first weight value corresponding to an i^th device type, n being an integer greater than 1, 1 < i < n;

[0040] a matching module, configured to acquire an operation health condition of the n types of power station devices by matching based on the operation state data, health types in the operation health condition corresponding to second weight values;

[0041] a determining module, configured to determine a power station health condition of the photovoltaic power station based on the operation health condition, the first weight values, and the second weight values; and

[0042] a displaying module, configured to display a power station health analysis interface on a terminal, the power station health analysis interface including the power station health condition. [0043] In still another aspect of the embodiments of the present disclosure, a computer device is provided. The computer device includes a processor and a memory storing at least one instruction, at least one program, a code set, or an instruction set. The at least one instruction, the at least one program, the code set, or the instruction set, when loaded and executed by the processor, causes the computer device to perform the method for determining the state of the photovoltaic power station according to any one of the above embodiments of the present disclosure.

[0044] In yet still another aspect of the embodiments of the present disclosure, a non-transitory computer-readable storage medium is provided. The storage medium stores at least one instruction, at least one program, a code set, or an instruction set. The at least one instruction, the at least one program, the code set, or the instruction set, when loaded and executed by a processor of a computer device, causes the computer device to perform the method for determining the state of the photovoltaic power station according to any one of the above embodiments of the present disclosure.

[0045] In yet still another aspect of the embodiments of the present disclosure, a computer program product is provided. The computer program product, when running on a computer, causes the computer to perform the method for determining the state of the photovoltaic power station according to any one of the above embodiments of the present disclosure.

[0046] The technical solutions according to the embodiments of the present disclosure at least includes the following beneficial effects:

[0047] When the specific health condition of the photovoltaic power station is evaluated, by assigning the first weight values to the n types of power station devices according to the degree of importance, and assigning the second weight values to the operation health condition of the power station for the n types of power station devices in different states, the server acquires the power station health condition by performing comprehensive assessment on the n types of power station devices based on the first weight values and the second weight values, and the power station health condition is displayed in the interface of the terminal, such that operation and maintenance personnel can directly acquire the health condition of the photovoltaic power station from the power station health analysis interface in the terminal, and make different management solutions therefor, thereby effectively and directly maintaining the photovoltaic power station, avoiding waste of unnecessary human resources, and saving a certain amount of generating capacity.

BRIEF DESCRIPTION OF THE DRAWINGS

[0048] For clearer descriptions of the technical solutions according to the embodiments of the present disclosure, drawings that are to be referred for description of the embodiments are briefly described hereinafter. Apparently, the drawings described hereinafter merely illustrate some embodiments of the present disclosure. Persons of ordinary skill in the art may also derive other drawings based on the drawings described herein without any creative effort.

[0049] FIG. 1 is a schematic diagram of an implementation environment for a method for determining a state of a photovoltaic power station according to some embodiments of the present disclosure;

[0050] FIG. 2 is a schematic diagram of a topology structure of a photovoltaic power station according to some embodiments of the present disclosure;

[0051] FIG. 3 is a schematic flowchart of a method for determining a state of a photovoltaic power station according to some embodiments of the present disclosure;

[0052] FIG. 4 is a schematic flowchart of a method for determining a state of a photovoltaic power station according to some embodiments of the present disclosure;

[0053] FIG. 5 is a schematic flowchart of a method for determining a state of a photovoltaic power station according to some embodiments of the present disclosure;

[0054] FIG. 6 is a flowchart of a method for determining a state of a photovoltaic power station according to some embodiments of the present disclosure; [0055] FIG. 7 illustrates a schematic diagram of an interface for displaying an operation health state of a photovoltaic power station in a terminal;

[0056] FIG. 8 is a structural block diagram of an apparatus for determining a state of a photovoltaic power station according to some embodiments of the present disclosure;

[0057] FIG. 9 is a structural block diagram of an apparatus for determining a state of a photovoltaic power station according to some embodiments of the present disclosure; and

[0058] FIG. 10 is a schematic structural diagram of a server according to some embodiments of the present disclosure.

DETAILED DESCRIPTION

[0059] For clearer descriptions of the objectives, technical solutions, and advantages of the present disclosure, embodiments of the present disclosure are described hereinafter in detail with reference to the accompanying drawings.

[0060] First, terms involved in embodiments of the present disclosure are briefly introduced:

[0061] Photovoltaic power station: a photovoltaic power generation system that uses solar energy and is connected with the grid and transmits electricity to the grid with special materials. With the exploration of new energy, major power companies gradually favor photovoltaic energy, and large power generation groups hold more and more photovoltaic power generation assets. Monitoring on power station devices has become extremely important, and there are higher requirements for the reliability, intelligence and accuracy of a monitoring system. If operation and maintenance personnel repair all the devices in the photovoltaic power station one by one, a lot of human resources may be wasted, and thus unified maintenance of all the power station devices in the photovoltaic power station is an urgent problem to be solved. In the example, the photovoltaic power station includes n types of power station devices, and the n types of power station devices are connected through different topological structures. The n types of power station devices include booster stations, box transformers, inverters, combiner boxes and other components, n is an integer greater than 1.

[0062] Operation state data: indicates data generated by the n types of power station devices in the photovoltaic power station respectively. The n types of power station devices upload the data generated by themselves to a server or a terminal used to process the operation and maintenance of the photovoltaic power station. Illustratively, the operation state data have different state classifications for different devices. For example, as for a box transformer device, the box transformer device is a core part of the monitoring system for the photovoltaic power station, and achieves functions of remote signaling, telemetry, remote control, and remote regulation, the box transformer device uploads collected operation state data in the photovoltaic power station to the corresponding server or terminal, and the server or terminal determines an operation state of the box transformer device according to the operation state data. The operation state includes any one of outage, night state, normal operation, or communication interruption. The server or terminal determines the operation state of the box transformer device through preset rules based on the operation state data. As for an inverter, the inverter converts DC power in the photovoltaic power station into AC power, the inverter uploads operation state data corresponding to a converted power value to the server or terminal, and the server or terminal determines an operation state of the inverter according to the operation state data. The operation state includes any one of electrical fault shutdown, low-performance operation, normal operation, force majeure shutdown, limited power operation and other states.

[0063] Operation health condition: indicates the health state of the n types of power station devices determined according to the operation state data, and includes unhealthy, sub-healthy, and healthy states. There is a corresponding relationship between the above operation state data and the operation health condition. Illustratively, taking the box transformer device as an example, when the operation state of the box transformer device is normal operation or night state, the operation health condition of the box transformer device is the healthy state, and when the operation state of the box transformer device is outage, the operation health condition of the box transformer device is the unhealthy state.

[0064] In some embodiments, the operation health condition further includes a state of poor communication. In the embodiment of the present disclosure, when the operation health condition is the healthy state and when a device is in a communication interruption or a communication failure, the operation health condition of the power station device is determined as poor communication.

[0065] FIG. 1 is a schematic diagram of an implementation environment for a method for determining a state of a photovoltaic power station according to some embodiments of the present disclosure. As shown in FIG. 1, the implementation environment includes: a photovoltaic power station 100, a server 110, and a terminal 120.

[0066] The photovoltaic power station 100 includes n types of power station devices. The n types of power station devices correspond to n first weight values, and an i^th type of power station devices correspond to an i^th first weight value. The n types of power station devices upload operation state data collected by themselves to the server 110. The server receives the operation state data corresponding to the n types of power station devices, and determines operation states corresponding to the n types of power station devices according to the operation state data. The n types of power station devices correspond to different weight values. An operation health condition of the n types of power station devices is acquired, and health types in the operation health condition correspond to second weight values. A power station health condition of the photovoltaic power station 100 is determined based on the operation health condition, the first weight values, and the second weight values. The server 110 sends the power station health condition to the terminal 120, and a power station health analysis interface is displayed in the terminal 120. The power station health analysis interface includes the power station health condition.

[0067] The above data interaction manner is only a schematic example. In some embodiments, the n types of power station devices directly send the operation state data collected by themselves to the terminal 120, the terminal 120 performs analysis and calculation on the operation state data, and determines the power station health condition of the photovoltaic power station 100 based on the first weight values and the second weight values, and the power station health condition is directly displayed on the corresponding power station health analysis interface. The specific manner of data interaction is not limited by the embodiments of the present disclosure.

[0068] With reference to the above description, FIG. 2 is a schematic diagram of a topology structure of a power station 100 according to some embodiments of the present disclosure. As shown in FIG. 2, the photovoltaic power station 100 includes: a booster station 210, box transformers 220, centralized inverters 230, DC combiner boxes 240, and strings and components 250.

[0069] The working principle of the photovoltaic power station 100 is that the strings and components 250 collect light energy and convert the light energy into electrical energy, the DC combiner boxes 240 ensure orderly connection of the strings and components 250, and collect the converted electrical energy, the centralized inverters 230 convert converted direct current into alternating current, the alternating current is collected through the box transformers 220, and the box transformers 220 may perform functions of remote signaling, telemetry, remote control, and remote adjustment on the DC combiner boxes 240 and the centralized inverters 230. Remote signaling refers to remote signals, which indicate the acquisition of protection and switching information. Telemetry refers to remote measurement, which indicate the acquisition and transmission of operation parameters including electrical quantities of voltage, current, and power generated on a line. Remote control indicates reception and execution of remote adjustment commands, and remote control of remote switch control devices. Remote adjustment also indicates reception and execution of remote adjustment commands, and execution of remote debugging on remote control quantities. Electricity collected through the box transformers 220 is transmitted to the booster station 210, and the booster station 210 converts high voltage into low voltage, or converts low voltage into high voltage. In the embodiment of the present disclosure, the main purpose is boosting, such that line current is reduced, and power loss is reduced. [0070] The topology structure of the photovoltaic power station 100 introduced in FIG. 2 above is formed by booster station-box transformer-centralized inverter-DC combiner box-string and component. In addition to this topology structure, the topology structure may also be booster station-box transformer-AC combiner box-string inverter-string and component, and may also be a power station connection structure having the above two topology structures at the same time. The actual topology structure of the photovoltaic power station 100 is not limited in the present disclosure.

[0071] The method for determining the state of the photovoltaic power station according to the embodiments of the present disclosure is described with reference to the brief introduction of the terms. FIG. 3 is a flowchart of the method for determining the state of the photovoltaic power station according to some embodiments of the present disclosure. For example, the method is applicable to a server. As shown in FIG. 3, the method includes the following steps.

[0072] In step 301, operation state data sent by n types of power station devices in the photovoltaic power station is received.

[0073] In some embodiments, the n types of power station devices include at least one of box transformers, centralized inverters, string inverters, DC combiner boxes, AC combiner boxes, electricity meters, and weather stations. The centralized inverters and the string inverters are displayed in a terminal according to the inverters upon subsequent calculation is completed. Devices in different photovoltaic power stations correspond to different degrees of importance. For example, a degree of importance of a box transformer is greater than that of an inverter in a photovoltaic power station A, and the degree of importance of an inverter is greater than that of a box transformer in a photovoltaic power station B.

[0074] In some embodiments, the n types of power station devices in the photovoltaic power station correspond to n first weight values, an i^th first weight value corresponds to an i^th device type, n is an integer greater than 1, and I < i < n. That is, each of the n types of power station devices has respective weight value correspondingly. In the embodiment of the present disclosure, a corresponding relationship between the n types of power station devices and the first weight values is pre-stored in the terminal or server, and may be stored as a table. The corresponding relationships between the n types of power station devices and the first weight values are shown in Table 1 below.

Table 1: Corresponding relationships between the n types of power station devices and the first weight values

when calculating a power station health condition of the photovoltaic power station subsequently, the server acknowledges that a first weight value of the box transformer is 10 by directly calling the pre-stored table of the corresponding relationships between the n types of power station devices and the first weight values, and the first weight value of 10 indicates that the box transformer has a high degree of importance in the photovoltaic power station. Taking the power station device type being an electricity meter as an example, the server acknowledges that a first weight value of the electricity meter is 1 by calling the table of the corresponding relationships between the n types of power station devices and the first weight values, and the first weight value of 1 indicates that the electricity meter has a low degree of importance in the photovoltaic power station. When a faulty device in the photovoltaic power station is maintained, the importance of a fault may be estimated according to prompt information displayed in the terminal. If there is a problem with the box transformer, operation and maintenance personnel need to immediately repair the faulty box transformer, and if there is a problem with the electricity meter, the operation and maintenance personnel may selectively repair the faulty electricity meter.

[0076] In some embodiments, the server receives the operation state data sent by each device in each of the n types of power station devices, and the operation state data include the first weight value corresponding to each of the n types of power station devices. The server determines an operation state of the device according to the received operation state data, and each type of power station devices correspond to different operation states. Illustratively, taking the DC combiner box as an example, the server receives the operation state data collected by the DC combiner box, the operation state data including a current situation and the first weight value corresponding to the DC combiner box, and determines the operation state corresponding to the current condition according to a preset rule. The operation state may be any one of outage, night state, environmental shutdown, normal operation, or communication interruption.

[0077] In sep 302, an operation health condition of the n types of power station devices is acquired by matching based on the operation state data.

[0078] In some embodiments, a corresponding relationship is predefined between the operation state data and the operation health condition. Illustratively, the operation state data corresponding to the box transformer include any one of outage, night state, or normal operation. A corresponding relationship between between the operation state data and an operation health state of the box transformer is: outage -unhealthy state, night state-healthy state, and normal operation- healthy state.

[0079] Thus, when the operation state data sent by the box transformer in the photovoltaic power station to the server indicate that the box transformer is in an outage state, the server determines that the operation health condition of the box transformer is unhealthy according to the outage state.

[0080] The server determines the operation state corresponding to each device according to the operation state data sent by each device in each of the n types of power station devices, counts the number of power station devices under each operation state data of each type of power station devices, and determines the operation health condition corresponding to each device. In some embodiments, health types in the operation health condition also correspond to second weight values. The operation health condition includes any one of a healthy state, a sub-healthy state and an unhealthy state, where the healthy state corresponds to a first sub-weight, the sub-healthy state corresponds to a second sub-weight, and the unhealthy state corresponds to a third sub-weight. Exemplarily, taking the box transformer as an example, when the server determines that the box transformer is in a healthy state, the server directly acquires a corresponding first sub-weight from Table 2 when the operation health condition is the healthy state.

Table 2: Corresponding relationships between the power station devices and the second weight values

[0081] n Table 2, taking the box transformer as an example, when the box transformer sends data thereof to the server, the server determines the operation state of the box transformer according to electrical quantity data uploaded by the box transformer, determines the operation health condition of the box transformer according to the operation state data of the box transformer, and determines corresponding second weight values of the box transformer under different operation health conditions by directly calling a preset relationship in Table 2. When the box transformer is in the healthy state, it may be known according to the predetermined relationship in Table 2 that the second weight value in the healthy state is 5, and the second weight value of 5 indicates that the health state of the box transformer has a high degree of importance. [0082] In step 303, the power station health condition of the photovoltaic power station is determined based on the operation health condition, the first weight values, and the second weight values.

[0083] An ideal value of the n types of power station devices in the healthy state is determined, and the ideal value is acquired when each power station device in each of the n types of power station devices is in the healthy state. In the embodiment of the present disclosure, Formula 1 is acquired according to Table 1 and Table 3, and Formula 1 is used to calculate the ideal value of the n types of power station devices. Formula 1 may be pre-stored in the server and calculated by the server, and may also be stored in the terminal and calculated by the terminal.

Formula

[0084] In Formula 1, D, represents first weight values under different power station device types Di-D_n. Illustratively, reference may be made to Table 1 for details of the first weight values corresponding to the different power station device types. Hi represents a second weight value of a power station device type corresponding to

in a healthy state, that is, the above first subweight. Reference may be made to Table 2 for details. ND represents the total number of device types corresponding to 1),.

[0085] For a p^th type of power station devices, a p^th state value of the p^th type of power station devices corresponding to the operation health condition is determined, where I < p < n; and a sum of n state values corresponding to n power station devices corresponding to the n types of power station devices is determined in sequence. For details, reference may be made to Formula 2. The sum of the state values under different device types is calculated by using Formula 2.

„ Formu ,la 2 >: Sum o ^Jf statu

. n

[0086] In Formula 2, /), represents the first weight values under the different power station device types Di-Dn, Hi represents the second weight values of different power station devices corresponding to different operation health conditions, and NDH represents the number of devices under different operation health conditions of the different types of power station devices.

[0087] A ratio of the sum of the state values to the ideal value is determined as a power station health reference value of the photovoltaic power station. For details, reference may be made to Formula 3.

Formula

[0088] In Formula 3, Score represents the power station health reference value of the photovoltaic power station. Thus, the power station health condition of the photovoltaic power station is determined based on the power station health reference value. [0089] In the embodiments of the present disclosure, for the p^th type of power station devices, the number of first devices in the healthy state is determined, and a first product of the number of the first devices, a first weight value corresponding to the p^th type of power station devices, and the first sub-weight is determined;

[0090] the number of second devices in the sub-healthy state is determined, and a second product of the number of the second devices, the first weight value corresponding to the p^th type of power station devices, and the second sub-weight is determined;

[0091] the number of third devices in the unhealthy state is determined, and a third product of the number of the third devices, the first weight value corresponding to the p^th type of power station devices, and the third sub-weight is determined; and

[0092] a sum of the first product, the second product and the third product are determined as the p^th state value corresponding to the p^th type of power station devices, where 1 < p < n; and the sum of the n state values corresponding to the n power station devices corresponding to the n types of power station devices is determined in sequence.

[0093] The server determines the power station health condition corresponding to the power station health reference value according to the preset reference value-power station health condition matching table. For details, reference may be made to Table 3.

Table 3: Reference value-power station health condition matching table

[0094] n some embodiments, when the health reference value finally acquired by the photovoltaic power station 1 through calculation is 0.9, and no device in the power station has an operation state of poor communication, the power station health condition in the photovoltaic power station 1 is determined as the healthy state. When the health reference value finally acquired by the photovoltaic power station 1 through calculation is 0.9, and there is a device having an operation state of poor communication in the power station, the power station health condition in the photovoltaic power station 1 is determined as poor communication.

[0095] In step 304, a power station health analysis interface is displayed on the terminal. The power station health analysis interface includes the power station health condition. [0096] The server determines the power station health condition of the photovoltaic power station according to the operation health data, the first weight values, and the second weight values. The power station health condition includes a power station health state, a specific health condition corresponding to the health state, and the number of faulty devices.

[0097] The power station health condition is sent by the server to the terminal, and is displayed in a designated region of the terminal for the operation and maintenance personnel to check.

[0098] In conclusion, in the method for determining the state of the photovoltaic power station according to the embodiments, when the specific health condition of the photovoltaic power station is evaluated, by assigning the first weight values to the n types of power station devices according to the degree of importance, and assigning the second weight values to the operation health condition of the power station for the n types of power station devices in different states, the server acquires the power station health condition by performing comprehensive assessment on the n types of power station devices based on the first weight values and the second weight values, and the power station health condition is displayed in the interface of the terminal, such that operation and maintenance personnel can directly acquire the health condition of the photovoltaic power station from the power station health analysis interface in the terminal, and make different management solutions therefor, thereby effectively and directly maintaining the photovoltaic power station, avoiding waste of unnecessary human resources, and saving a certain amount of generating capacity.

[0099] FIG. 4 is a flowchart of a method for determining a state of a photovoltaic power station according to some embodiments of the present disclosure. For example, the method is applicable a server. As shown in FIG. 4, the method includes the following steps.

[00100] In step 401, operation state data sent by n types of power station devices in the photovoltaic power station are received.

[00101] The n types of power station devices correspond to n first weight values, an i^th first weight value corresponds to an i^th device type, n is an integer greater than 1, and I < i < n.

[00102] This step is the same as the process of step 301, which is thus not repeated herein.

[00103] In step 402, a preset state data-health condition matching table is acquired.

[00104] The state data-health condition matching table is pre-stored in the server, and includes a matching relationship among the device types, an operation health condition and the operation state data. The operation state data sent by each power station device in the n types of power station devices are received, and a corresponding operation health condition is acquired from the state data-health condition matching table according to the operation state data.

[00105] Optionally, operation state data of a target power station device in the n types of power station devices are determined; and an operation health condition of the target power station device is determined based on the operation state data of the target power station device and a device type of the target power station device.

[00106] Illustratively, the state data-health condition matching table is shown in Table 4 below.

Table 4: State data-health condition matching table

the server determines an operation state of the box transformer according to the operation state data, and directly acquires an operation health condition corresponding to the operation state by calling the state data-health condition matching table. [00108] In step 403, the operation health condition correspondingly matched with the operation state data is determined from the state data-health condition matching table.

[00109] In some embodiments, in step 403, the state data-health condition matching table may be pre-stored in the server, and the server acquires the corresponding operation health condition by directly calling the table upon receiving data. In another optional embodiment, the operation state data corresponding to the n types of power station devices received by the server include the corresponding operation health condition.

[00110] In step 404, a power station health condition of the photovoltaic power station is determined based on the operation health condition, the first weight values, and second weight values.

[00111] This step is the same as the process of step 303, which is thus not repeated herein.

[00112] In step 405, a power station health analysis interface is displayed on the terminal. The power station health analysis interface includes the power station health condition.

[00113] This step is the same as the process of step 304, which is thus not repeated herein.

[00114] In conclusion, in the method for determining the state of the photovoltaic power station according to the embodiments, when the specific health condition of the photovoltaic power station is evaluated, by assigning the first weight values to the n types of power station devices according to the degree of importance, and assigning the second weight values to the operation health condition of the power station for the n types of power station devices in different states, the server acquires the power station health condition by performing comprehensive assessment on the n types of power station devices based on the first weight values and the second weight values, and the power station health condition is displayed in the interface of the terminal, such that operation and maintenance personnel can directly acquire the health condition of the photovoltaic power station from the power station health analysis interface in the terminal, and make different management solutions therefor, thereby effectively and directly maintaining the photovoltaic power station, avoiding waste of unnecessary human resources, and saving a certain amount of generating capacity.

[00115] FIG. 5 is a flowchart of a method for determining a state of a photovoltaic power station according to some embodiments of the present disclosure. For example, the method is applicable to a server. As shown in FIG. 5, the method includes the following steps.

[00116] In step 501, operation state data sent by n types of power station devices in the photovoltaic power station are received.

[00117] In some embodiments, the n types of power station devices in the photovoltaic power station correspond to n first weight values, an i^th first weight value corresponds to an i^th device type, n is an integer greater than 1, and I < i < n. [00118] This step is the same as the process of step 301, which is thus not repeated herein.

[00119] In step 502, an operation health condition of the n types of power station devices is acquired by matching based on the operation state data.

[00120] In some embodiments, a corresponding relationship is predefined between the operation state data and the operation health condition. Illustratively, operation state data corresponding to a box transformer include any one of outage, night state, or normal operation. The corresponding relationship between the operation state data and an operation health state of the box transformer is: outage -unhealthy state, night state-healthy state, and normal operation-healthy state.

[00121] This step is the same as the process of step 302, which is thus not repeated herein.

[00122] In step 503, a power station health condition of the photovoltaic power station is determined based on the operation health condition, the first weight values and second weight values.

[00123] In some embodiments, an ideal value of the n types of power station devices in a healthy state is determined; for a p^th type of power station devices, a p^th state value of the p^th type of power station devices corresponding to the operation health condition is determined, 1 < p < n; a sum of n state values corresponding to the n types of power station devices is determined; a ratio of the sum of the state values to the ideal value is determined as a power station health reference value of the photovoltaic power station; and the power station health condition corresponding to the power station health reference value is determined according to a preset reference value-health condition matching table .

[00124] This step is the same as the process of step 303, which is thus not repeated herein.

[00125] In step 504, a power station health analysis interface is displayed on the terminal. The power station health analysis interface includes the power station health condition.

[00126] In some embodiments, an operation health condition of each photovoltaic power station is displayed in the power station health analysis interface, and different operation health conditions correspond to prompt information of different colors/marks. In the embodiment of the present disclosure, when in a healthy state, a display region of a corresponding power station is marked in green; when in a sub-healthy state, a display region of a corresponding power station is marked in yellow; when in an unhealthy state, a display region of a corresponding power station is marked in red; and when in a poor communication state, a display region of a corresponding power station is marked in gray. When in the unhealthy state, poor communication, or sub-healthy state, a warning sign to prompt operation and maintenance personnel is marked in front of a display region for health problems. The present disclosure does not limit the warning sign.

[00127] The operation health condition of each photovoltaic power station is displayed in the power station health analysis interface. The operation health condition of each photovoltaic power station may be displayed in the power station health analysis interface as a card, a list, a thumbnail, etc., and a user performs a trigger operation on a target power station to be checked. The trigger operation may be to click any position in a display region for the target power station or to enter a keyword of the target power station in a photovoltaic power station list.

[00128] In response to a custom operation of the user, the server receives a custom instruction, and recalculates a power station health condition of the target power station based on a newly defined first weight value and second weight value as well as operation health data uploaded by the power station according to Formula 1, Formula 2 and Formula 3, and feeds a newly defined result back to a designated region of the display region for the target power station in the terminal. [00129] In response to the end of the trigger operation, a detailed health data information interface of the target power station is displayed, and the interface also includes a custom function which allows the user to adjust a proportion of the first weight value and a proportion of the second weight value, such that the operation and maintenance personnel can set different maintenance priorities for different types of photovoltaic power stations.

[00130] In step 505, for devices with health problems in the n types of power station devices, a display priority of the health problems is determined based on the first weight values and the second weight values.

[00131] In some embodiments, in the power station health analysis interface, a list of all power stations in the power station health analysis interface is arranged according to the priority of poor communication, the unhealthy state, the sub-healthy state, and the healthy state. The priority order of the health problems is displayed in a display region for the power stations with health problems based on the first weight values and the second weight values. Specifically, the devices with the health problems in the n types of power station devices are ranked in a descending order based on the first weight values; power station devices of first m device types in the descending order are determined, where I < m < n; for the power station devices of the first m device types, health problems occurring in each type of power station devices are ranked in an ascending order based on the second weight values; and a display priority of the health problems of the m device types is determined based on the ascending order.

[00132] In some embodiments, when an operation health state of a photovoltaic power station a is the poor communication state, power station devices with problems, the health problems and the number of the devices with the health problems are displayed in a card region of the corresponding power station. For example, sub-health: Combiner box-outage-510 indicates that the photovoltaic power station a is in a sub-healthy state, and there are 510 combiner boxes that are out of service. An operation health condition of a photovoltaic power station b is poor communication, and Poor communication: Box transformer-communication interruption-49 and Inverter-communication fault-98 are displayed in a display region corresponding to the photovoltaic power station b. Please refer to the weight ratio of each device in Table 1 here, which indicates that the degree of importance of the box transformer is greater than that of the inverter in the photovoltaic power station b, and there are 49 box transformers having the health problem of communication interruption and 98 inverters having the health problem of communication fault.

[00133] In step 506, first m devices with the health problems are displayed in sequence in the health analysis interface based on the display priority.

[00134] According to a display logic in step 505 above, the first m devices with health problems, the health problems, and the number of the devices with the health problems are displayed in a display region of a corresponding power station.

[00135] In conclusion, in the method for determining the state of the photovoltaic power station according to the embodiments, when the specific health condition of the photovoltaic power station is evaluated, by assigning the first weight values to the n types of power station devices according to the degree of importance, and assigning the second weight values to the operation health condition of the power station for the n types of power station devices in different states, the server acquires the power station health condition by performing comprehensive assessment on the n types of power station devices based on the first weight values and the second weight values, and the power station health condition is displayed in the interface of the terminal, such that operation and maintenance personnel can directly acquire the health condition of the photovoltaic power station from the power station health analysis interface in the terminal, and make different management solutions therefor, thereby effectively and directly maintaining the photovoltaic power station, avoiding waste of unnecessary human resources, and saving a certain amount of generating capacity.

[00136] Illustratively, FIG. 6 is a flowchart of a method for determining a state of a photovoltaic power station according to some embodiments of the present disclosure. For example, the method is applicable to a server. As shown in FIG. 6, the method includes the following steps.

[00137] In step 601, operation data of devices is acquired.

[00138] In the embodiment of the present disclosure, operation state data of all power station devices in each photovoltaic power station is acquired. The power station devices include at least one of box transformers, centralized inverters, string inverters, DC combiner boxes, AC combiner boxes, electricity meters, or weather stations. On a terminal interface, the centralized inverters and the string inverters are displayed as inverters.

[00139] In some embodiments, a server acquires operation data corresponding to the power station devices in all photovoltaic power stations in a region where the server belongs. The operation data includes at least one of generating capacity, weather, or accumulated irradiation. [00140] In some embodiments, each type of power station devices in different photovoltaic power stations have different degrees of importance. For example, the degree of importance of a box transformer is greater than that of an inverter in a photovoltaic power station a. Illustratively, the n types of power station devices in the photovoltaic power station correspond to n first weight values, an i^th first weight value corresponds to an i^th device type, and n is an integer greater than 1. Optionally, operation and maintenance personnel may adjust the first weight values corresponding to the n types of power station devices in a display interface of a terminal. Illustratively, a first weight value of the box transformer in the photovoltaic power station a is 10, and when adjusting the degree of importance of the box transformer, the operation and maintenance personnel may change the first weight value corresponding to the box transformer from 10 to 5.

[00141] In step 602, a state of the devices is determined.

[00142] In some embodiments, the server determines the operation state of the n types of power station devices in the photovoltaic power station according to the operation data acquired above. Illustratively, an operation state corresponding to the box transformer includes any one of outage, night state, or normal operation. A corresponding relationship is predefined between the operation state and an operation health condition of the power station devices. Optionally, the corresponding relationship may be pre-stored in the server or customized by the operation and maintenance personnel. For example, the outage state corresponds to an unhealthy state, and the night state corresponds to a healthy state.

[00143] In some embodiments, specific conditions of the power station devices in each photovoltaic power station are displayed in the display interface of the terminal as cards. The specific conditions include the operation health condition of the power station, the operation data of the power station, device types with problems, or the total number of the device types with problems. The operation and maintenance personnel can intuitively check the health condition of each photovoltaic power station through the display interface of the terminal. If the operation and maintenance personnel want to further check detailed information of a photovoltaic power station, the operation and maintenance personnel can trigger a control preset in a card to check information of a device with problems.

[00144] In some embodiments, the server determines the operation state corresponding to each device according to the operation data sent by each device in each of the n types of power station devices, counts the number of power station devices under each operation state data of each type of power station devices, and determines the operation health condition corresponding to each device. In some embodiments, health types in the operation health condition also correspond to second weight values. The operation health condition includes any one of a healthy state, a sub- healthy state and an unhealthy state, where the healthy state corresponds to a first sub-weight, the sub-healthy state corresponds to a second sub-weight, and the unhealthy state corresponds to a third sub -weight.

[00145] In step 603, a power station health degree score is calculated.

[00146] In some embodiments, the server acquires the first weight values and the second weight values corresponding to the power station devices according to Table 1 and Table 2, where the first weight values indicate the degree of importance of the power station devices in the photovoltaic power station, and the second weight values indicate the degree of importance of an operation health degree corresponding to the power station devices.

[00147] The server acquires the power station health degree corresponding to the photovoltaic power station by using Formula 1 to Formula 3 based on the first weight values and the second weight values, and feeds the power station health degree back to a preset position of the terminal for display.

[00148] In step 604, whether to adjust state health degree grouping is determined.

[00149] Upon checking a health degree score of a photovoltaic power station on the terminal, the operation and maintenance personnel can customize the second weight values corresponding to the operation health condition corresponding to the power station devices. For example, in response to the operation of checking the power station health degree score triggered by the operation and maintenance personnel, the terminal calculates a health degree of the photovoltaic power station by using the pre-stored weight values (including the first weight values and the second weight values), and a calculation result is fed back to the terminal after being acquired. The operation and maintenance personnel adjust the degrees of importance of the second weight values and the first weight values corresponding to the power station devices by triggering a control button for index setting. Illustratively, before adjustment, a first weight value corresponding to the box transformer is 9, a first sub-weight (indicating the degree of importance of the operation health condition of the box transformer being the health state) in a second weight value is 5, and the operation and maintenance personnel adjust the first weight value and the first sub-weight to 4 and 2 respectively.

[00150] In the case that the operation and maintenance personnel decide to adjust the state health degree grouping, step 605 is performed, and in the case that the state health degree grouping does not need to be adjusted, step 606 is performed.

[00151] In step 605, the state health degree grouping of the devices is changed.

[00152] The first weight values and the second weight values of the power station devices are adjusted correspondingly by step 604, and the adjusted first weight values and second weight values are applied to Formula 1 to Formula 3 for subsequent calculation on a power station health degree. [00153] In step 606, the power station health degree is output.

[00154] The server completes calculation on the power station health degree of the photovoltaic power station by using Formula 1 to Formula 3 based on the acquired operation data corresponding to the power station devices, the first weight values, and the second weight values.

[00155] The server calls a power station health condition matching table (a preset power station scoring standard) corresponding to Table 3, and determines photovoltaic power stations with the power station health degree greater than 0.8 and having no power station device in the poor communication state as the healthy state, photovoltaic power stations with the power station health degree greater than or equal to 0.6 and less than or equal to 0.8 as the sub-healthy state, photovoltaic power stations with the power station health degree less than 0.6 as the unhealthy state, and photovoltaic power stations with the power station health degree greater than 0.8 and having a power station device in the poor communication state as poor communication.

[00156] In step 607, whether to adjust the power station scoring standard is determined.

[00157] The server uses the pre-stored power station health condition matching table to determine the power station health degree of the photovoltaic power station, and then the power station health degree is displayed on the interface of the terminal. The operation and maintenance personnel decide whether to adjust the current power station scoring standard for the photovoltaic power station. If adjustment is required, step 608 is performed; and if adjustment is not required, step 609 is performed.

[00158] In step 608, the power station health degree scoring standard is changed.

[00159] The operation and maintenance personnel adjust the preset power station scoring standard and acquire an adjusted power station scoring standard. Optionally, the server receives the adjusted power station scoring standard to replace the preset power station scoring standard; or, the server sets the adjusted power station scoring standard as a first scoring standard, and stores the power station scoring standard set last time in the form of a list. When the operation and maintenance personnel score the power station health degree, the list is output for the operation and maintenance personnel to choose the optimal solution, and the server calculates the power station health degree of the photovoltaic power station based on the selection operation of the operation and maintenance personnel.

[00160] In step 609, a health condition is displayed on the terminal.

[00161] Upon completing the calculation of the power station health degree of the photovoltaic power station, the server feeds the specific condition of each photovoltaic power station to the terminal for display. Illustratively, please refer to FIG. 7 which illustrates a schematic diagram of an interface for displaying an operation health state of the photovoltaic power station in the terminal. [00162] As shown in FIG. 7, all photovoltaic power stations are displayed in a power station list interface 701 in the form of cards, and number information corresponding to the health conditions of all photovoltaic power stations is summarized into a first region 702. There are "all state 4," "unhealthy 0," "sub-healthy 2," "healthy 1," and "poor communication 1" displayed in the first region 702, which indicate that the total number of photovoltaic power stations is 4, the number of photovoltaic power stations in the unhealthy state is 0, the number of photovoltaic power station in the sub-healthy state is 2, the number of photovoltaic power station in the healthy state is 1, and the number of photovoltaic power stations in the poor communication state is 1. Optionally, the display priority of "unhealthy," "sub-healthy," "healthy," and "poor communication" may be preset or customized by the operation and maintenance personnel, which is not limited in the present disclosure.

[00163] The operation condition of each photovoltaic power station is displayed in the power station list interface 701 in the form of cards. A card 703 indicates the operation condition of "Huarui Photovoltaic Power Station," and the card 703 includes a first warning region 704 and a normal display region 705. The first warning region 704 displays different warning colors or marks according to a health condition in a first sub-card 706. Optionally, when the first sub-card 706 displays "sub-healthy," the color of the first warning region 704 is set to yellow; when the first sub-card 706 displays "healthy," the color of the first warning region 704 is set to green; when the first sub-card 706 displays "poor communication," the color of the first warning region 704 is set to gray; and when the first sub-card 706 displays "unhealthy," the color of the first warning region 704 is set to red. The normal display region 705 displays operation data of the photovoltaic power station. The health condition corresponding to the photovoltaic power station is displayed in the first sub-card 706. In the case that the first sub-card 706 indicates that the power station health condition of "Huarui Photovoltaic Power Station" is "sub-healthy," a display state of the first warning region 704 is yellow. The normal display region 705 further includes a problem display region 707, and the problem display region 707 indicates the type of power station devices with problems in "Huarui Photovoltaic Power Station" a corresponding operation state condition, and the corresponding number of the devices. Illustratively, the number of box transformers in the outage state in "Huarui Photovoltaic Power Station" is 1. Optionally, the operation and maintenance personnel can set the first weight values, the second weight values and a power station health scoring standard of the photovoltaic power station by triggering a custom control 708 in the power station list interface 701 .

[00164] In conclusion, in the method for determining the state of the photovoltaic power station according to the embodiments, when the specific health condition of the photovoltaic power station is evaluated, by assigning the first weight values to the n types of power station devices according to the degree of importance, and assigning the second weight values to the operation health condition of the power station for the n types of power station devices in different states, the server acquires the power station health condition by performing comprehensive assessment on the n types of power station devices based on the first weight values and the second weight values, and the power station health condition is displayed in the interface of the terminal, such that operation and maintenance personnel can directly acquire the health condition of the photovoltaic power station from the power station health analysis interface in the terminal, and make different management solutions therefor, thereby effectively and directly maintaining the photovoltaic power station, avoiding waste of unnecessary human resources, and saving a certain amount of generating capacity.

[00165] FIG. 8 is a structural block diagram of an apparatus for determining a state of a photovoltaic power station according to some embodiments of the present disclosure. As shown in FIG. 8, the apparatus includes: a receiving module 810, a matching module 820, a determining module 830, and a displaying module 840.

[00166] The receiving module 810 is configured to receive operation state data sent by n types of power station devices in the photovoltaic power station. The n types of power station devices correspond to n first weight values, an i^th first weight value correspond to an i^th device type, n is an integer greater than 1, and 1 < i < n.

[00167] The matching module 820 is configured to acquire an operation health condition of the n types of power station devices by matching based on the operation state data, and health types in the operation health condition correspond to second weight values.

[00168] The determining module 830 is configured to determine a power station health condition of the photovoltaic power station based on the operation health condition, the first weight values, and the second weight values.

[00169] The displaying module 840 is configured to display a power station health analysis interface on a terminal, and the power station health analysis interface includes the power station health condition.

[00170] In some embodiments, the determining module 830 is further configured to determine an ideal value of the n types of power station devices in a healthy state; the determining module 830 is further configured to determine, for a p^th type of power station devices, a p^th state value of the p^th type of power station devices corresponding to the operation health condition, where I < p < n; the determining module 830 is further configured to determine a sum of n state values corresponding to the n types of power station devices; the determining module 830 is further configured to determine a ratio of the sum of the state values to the ideal value as a power station health reference value of the photovoltaic power station; and the determining module 830 is further configured to determine the power station health condition corresponding to the power station health reference value according to a preset reference value -health condition matching table.

[00171] In some embodiments, as shown in FIG. 9, the operation health condition includes the healthy state, a sub-healthy state and an unhealthy state, wherein the healthy state corresponds to a first sub-weight, the sub-healthy state corresponds to a second sub-weight, and the unhealthy state corresponds to a third sub-weight; the determining module 830 further includes a first determining subunit 850, a second determining subunit 860, and a third determining subunit 870; the first determining subunit 850 is configured to determine, for the p^th type of power station devices, the number of first devices in the healthy state, and determine a first product of the number of the first devices, a first weight value corresponding to the p^th type of power station devices, and the first sub-weight; the second determining subunit 860 is configured to determine the number of second devices in the sub-healthy state, and determine a second product of the number of the second devices, the first weight value corresponding to the p^th type of power station devices, and the second sub-weight; the third determining subunit 870 is configured to determine the number of third devices in the unhealthy state, and determine a third product of the number of the third devices, the first weight value corresponding to the p^th type of power station devices, and the third sub-weight; and the determining module 830 is further configured to determine a sum of the first product, the second product and the third product as the p^th state value corresponding to the p^th type of power station devices.

[00172] In some embodiments, as shown in FIG. 9, the apparatus further includes: an acquiring module 880, configured to acquire a preset state data-health condition matching table, and determine, from the state data-health condition matching table, the operation health condition correspondingly matched with the operation state data.

[00173] In an optional embodiment, as shown in FIG. 9, the acquiring module 880 is further configured to determine operation state data of a target power station device in the n types of power station devices, and determine an operation health condition of the target power station device based on the operation state data of the target power station device and a device type of the target power station device.

[00174] In some embodiments, as shown in FIG. 9, the determining module 830 is further configured to determine, for devices with health problems in the n types of power station devices, a display priority of the health problems based on the first weight values and the second weight values; and the displaying module 840 is further configured to display first m devices with the health problems in sequence in the health analysis interface based on the display priority. [00175] In some embodiments, as shown in FIG. 9, the apparatus further includes: a ranking module 890, configured to rank the devices with the health problems in the n types of power station devices in a descending order based on the first weight values, and determine power station devices of first m device types in the descending order, where I < m < n.

[00176] The ranking module 890 is further configured to rank, for the power station devices of the first m device types, health problems occurring in each type of power station devices in an ascending order based on the second weight values, and determine a display priority of the health problems of the m device types based on the ascending order.

[00177] In conclusion, in the apparatus for determining the state of the photovoltaic power station according to the embodiments, when the specific health condition of the photovoltaic power station is evaluated, by assigning the first weight values to the n types of power station devices according to the degree of importance, and assigning the second weight values to the operation health condition of the power station for the n types of power station devices in different states, the server acquires the power station health condition by performing comprehensive assessment on the n types of power station devices based on the first weight values and the second weight values, and the power station health condition is displayed in the interface of the terminal, such that operation and maintenance personnel can directly acquire the health condition of the photovoltaic power station from the power station health analysis interface in the terminal, and make different management solutions therefor, thereby effectively and directly maintaining the photovoltaic power station, avoiding waste of unnecessary human resources, and saving a certain amount of generating capacity.

[00178] It should be noted that the apparatus for determining the state of the photovoltaic power station provided in the above embodiment is only illustrated by the division of the above functional modules, and in actual applications, the above functions can be assigned to different functional modules as required, that is, the internal structure of the apparatus is divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus for determining the state of the photovoltaic power station according to the above embodiments and the embodiments of the method for determining the state of the photovoltaic power station are based on the same inventive concept, and the specific implementation process thereof is described in detail in the method embodiment and will not be repeated here.

[00179] FIG. 10 illustrates a schematic structural diagram of a server according to some embodiments of the present disclosure. The server may be the server shown in FIG. 1.

[00180] The server 110 includes a central processing unit (CPU) 1001, a system memory 1004 including a random-access memory (RAM) 1002 and a read-only memory (ROM) 1003, and a system bus 1005 for connecting the system memory 1004 with the central processing unit 1001. The server 110 further includes a basic input/output system (I/O system) 1006, which facilitates transmission of information between devices in a computer, and a large -capacity storage device 1007 for storing an operation system 1013, an application program 1014 and other program modules 1015.

[00181] The basic input/output system 1006 includes a display 1008 for displaying information and an input device 1009 such as a mouse and a keyboard for a user to input information. The display 1008 and the input device 1009 are connected to the central processing unit 1001 through an input and output controller 1010 connected to the system bus 1005. The basic input/output system 1006 may further include the input and output controller 1010 for receiving and processing input from a plurality of other devices such as a keyboard, a mouse, or an electronic stylus. Similarly, the input and output controller 1010 also provides output to a display screen, a printer, or other type of output devices.

[00182] The large-capacity storage device 1007 is connected to the central processing unit 1001 through a large -capacity storage controller (not shown) connected to the system bus 1005. The large-capacity storage device 1007 and associated computer-readable media thereof provide nonvolatile storage for the server 110. That is, the large-capacity storage device 1007 may include a computer-readable medium (not shown) such as a hard disk or a compact disc read-only memory (CD-ROM) drive.

[00183] Without loss of generality, the computer-readable medium may include a computer storage medium and a communication medium. The computer storage medium includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. The computer storage medium includes a RAM, a ROM, an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a flash memory, or other solid-state storage devices, a compact disc readonly memory (CD-ROM), a digital versatile disc (DVD) or other optical storages, a cassette, a magnetic tape, a disk storage or other magnetic storage devices. Of course, it can be appreciated by those skilled in the art that the computer storage medium is not limited to the above types. The system memory 1004 and the large -capacity storage device 1007 described above may be collectively referred to as memory.

[00184] According to various embodiments of the present disclosure, the server 110 may also operate on a remote computer connected to a network through a network such as the Internet. That is, the server 110 may be connected to a network 1012 through a network interface unit 1011 connected to the system bus 1005, or may also be connected to other types of networks or remote computer systems (not shown) through the network interface unit 1011. [00185] The above memory further includes one or more programs, and the one or more programs are stored in the memory and configured to be executed by the CPU.

[00186] An embodiment of the present disclosure further provides a computer device. The computer device includes a processor and a memory, the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the method for determining the state of the photovoltaic power station according to the above method embodiments.

[00187] An embodiment of the present disclosure further provides a non-transitory computer- readable storage medium. The non-transitory computer-readable storage medium stores at least one instruction, at least one program, a code set, or an instruction set. The at least one instruction, the at least one program, the code set, or the instruction set, when loaded and executed by a processor to of a computer device, causes the computer device to perform the method for determining the state of the photovoltaic power station according to the above method embodiments.

[00188] In some embodiments, the non-transitory computer-readable storage medium may include: a ROM, a RAM, a solid state drive (SSD), or a compact disc. The RAM may include a resistance random-access memory (ReRAM) and a dynamic random-access memory (DRAM). The above serial numbers of the embodiments of the present disclosure are merely for the purpose of description and do not indicate the superiority or inferiority of the embodiments.

[00189] It can be appreciated by those of ordinary skill in the art that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program, and the program can be stored in a computer- readable storage medium. The storage medium mentioned above may be a ROM, a magnetic disk, an optical disc, or the like.

[00190] Described are merely exemplary embodiments of the present disclosure, which are not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall fall within the scope of protection of the present disclosure.

Claims

CLAIMS What is claimed is:

1. A method for determining a state of a photovoltaic power station, comprising: receiving operation state data sent by n types of power station devices in the photovoltaic power station, the n types of power station devices corresponding to n first weight values, an i^!!i first weight value corresponding to an r^!i device type, n being an integer greater than 1, 1 < i < n; acquiring an operation health condition of the n types of power station devices by matching based on the operation state data, health types in the operation health condition corresponding to second weight values; determining a power station health condition of the photovoltaic power station based on the operation health condition, the first weight values, and the second weight values; and displaying a power station health analysis interface on a terminal, the power station health analysis interface comprising the power station health condition.

2. The method according to claim 1, wherein determining the power station health condition of the photovoltaic power station based on the operation health condition, the first weight values, and the second weight values comprises: determining an ideal value of the n types of power station devices in a healthy state; determining a p^tn state value of a p*^h type of power station devices corresponding to the operation health condition, 1 < p < n; determining a sum of n state values corresponding to the n types of power station devices; determining a ratio of the sum of the state values to the ideal value as a power station health reference value of the photovoltaic power station; and determining, according to a preset reference value-health condition matching table, the power station health condition corresponding to the power station health reference value.

3. The method according to claim 2, wherein the operation health condition comprises the healthy state, a sub-healthy state, and an unhealthy state, wherein the healthy state corresponds to a first sub-weight, the sub-healthy state corresponds to a second sub-weight, and the unhealthy- state corresponds to a third sub-weight; and determining tire p*^h state value of the p^tn type of power station devices corresponding to tire operation health condition comprises: determining the number of first devices in the healthy state for the p^th type of power station devices, and determining a first product of the number of the first devices, a first weight value corresponding to the p‘^h type of power station devices, and the first sub-weight; determining the number of second devices in the sub-healthy state, and determining a second product of the number of the second devices, the first weight value corresponding to the p^lh type of power station devices, and the second sub-weight; determining the number of third devices in the unhealthy state, and determining a third product of the number of the third devices, the first weight value corresponding to the p'^h type of power station devices, and the third sub-weight; and determining a sum of the first product, the second product, and the third product as the p^tn state value corresponding to the p^sh type of power station devices.

4. Tire method according to any one of claims 1 to 3, wherein acquiring the operation health condition of the n types of power station devices by matching based on the operation state data comprises: acquiring a preset state data-health condition matching table; and determining, from the state data-health condition matching table, the operation health condition correspondingly matched with the operation state data.

5. Tire method according to claim 4, wherein the state data-health condition matching table comprises a matching relationship between the device types, the operation health condition, and the operation state data; and determining, from the state data-health condition matching table, the operation health condition correspondingly matched with the operation state data comprises: determining operation state data of a target power station device in the n types of power station devices; and determining an operation health condition of the target power station device based on the operation state data of the target power station device and a device type of the target power station device.

6. The method according to any one of claims 1 to 3, wherein upon displaying the power station health analysis interface on the terminal, the method further comprises: determining, for devices with health problems in the n types of power station devices, display priorities of the health problems based on the first weight values and the second weight values; and displaying first m devices with the health problems in sequence in the health analysis interface based on the display priorities.

7. The method according to claim 6, wherein determining, for the devices with the health problems in the n types of power station devices, the display priorities of the health problems based on the first weight values and tire second weight values comprises: ranking the devices with the health problems in the n types of power station devices in a descending order based on the first weight values; determining power station devices of first m device types in the descending order, 1 < m < n; ranking, for the power station devices of the first m d evi ce types, health problems occurring in each type of power station devices in an ascending order based on the second weight values; and determining display priorities of the health problems of the m device types based on the ascending order.

8. An apparatus for determining a state of a photovoltaic power station, comprising: a receiving module, configured to receive operation state data sent by n types of power station devices in the photovoltaic power station, the n types of power station devices corresponding to n first weight values, an i^th first weight value corresponding to an i^th device type, n being an integer greater than 1, 1 < i < n; a matching module, configured to acquire an operation health condition of the n types of power station devices by matching based on the operation state data, health types in the operation health condition corresponding to second weight values; a determining module, configured to determine a power station health condition of the photovoltaic power station based on the operation health condition, the first weight values, and the second weight values; and a displaying module, configured to display a power station health analysis interface on a terminal, the power station health analysis interface comprising the power station health condition.

9. A computer device, comprising a processor and a memory storing at least one instruction, at least one program, a code set, or an instraction set, wherein the at least one instraction, the at least one program , the code set, or the instraction set, when loaded and executed by the processor, causes the computer device to perform the method for determining the state of the photovoltaic power station as defined in any one of claims 1 to 7.

10. A non-transitoiy computer-readable storage medium, storing at least one instruction, at least one program, a code set, or an instruction set, wherein the at least one instruction, the at least one program, the code set, or die instruction set, when loaded and executed by a processor of a computer device, causes the computer device to perform the method for determining tire state of the photovoltaic power station as defined in any one of claims 1 to 7.