CN112598141A - Operation and maintenance method and system for regional photovoltaic power station - Google Patents
Operation and maintenance method and system for regional photovoltaic power station Download PDFInfo
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Abstract
The invention discloses an operation and maintenance method and system for a regional photovoltaic power station, and belongs to the technical field of photovoltaic operation and maintenance. The method comprises the following steps: determining typical equipment faults of photovoltaic power stations in an area, generating an equipment fault alarm set, and generating an operation and maintenance scheme set aiming at the equipment fault alarm set; classifying the operation state of the photovoltaic power station in the area according to the evaluation result; classifying the power generation state of the photovoltaic power station in the area; and generating an operation and maintenance scheme, and performing operation and maintenance on the photovoltaic power station in the region according to the operation and maintenance scheme. The method is beneficial to realizing rapid diagnosis of the faults of the photovoltaic power station, determining the reasons and operation and maintenance schemes of the faults of the photovoltaic system, obviously shortening the diagnosis time of the faults, obviously improving the operation and maintenance efficiency, reducing the operation and maintenance cost and ensuring the economic benefits of the photovoltaic power station.
Description
Technical Field
The invention relates to the technical field of photovoltaic operation and maintenance, in particular to an operation and maintenance overhauling method and system for a regional photovoltaic power station.
Background
At present, the operation and maintenance of regional photovoltaic power stations mainly comprise two major types, namely equipment manufacturer operation and maintenance and power grid company generation operation and maintenance, the equipment manufacturer can acquire the operation and maintenance state and operation parameters of a field photovoltaic inverter by developing field operation and maintenance work, and the equipment-level fault rapid diagnosis and field operation and maintenance are realized.
Meanwhile, the photovoltaic power station of the power supply company for operation and maintenance can not obtain the operation state and the operation parameters of the inverter, fault diagnosis is carried out according to the electric quantity, and the diagnosis time is generally 1-2 days after the fault occurs; for village collective or centralized power stations, the number of the inverter faults cannot be judged, and the faults can be accurately positioned.
Therefore, the operation and maintenance efficiency is greatly reduced, the operation and maintenance time and the cost investment are increased, meanwhile, the grid-connected operation time of the power station is influenced due to the complexity of fault diagnosis and the operation and maintenance process, and the economic benefit of the photovoltaic power station is reduced.
Disclosure of Invention
Aiming at the problems, the invention provides an operation and maintenance method for a regional photovoltaic power station, which comprises the following steps:
determining typical equipment faults of photovoltaic power stations in an area, generating an equipment fault alarm set, and generating an operation and maintenance scheme set aiming at the equipment fault alarm set;
according to the novel classification of fault alarms of the photovoltaic power stations in the area, the operation state and the fault operation and maintenance emergency degree of the photovoltaic power stations are evaluated by combining the types and the quantity of faults of the photovoltaic power stations in the operation period, the evaluation result is obtained, and the operation state of the photovoltaic power stations in the area is classified according to the evaluation result;
classifying the power generation state of the photovoltaic power station in the area according to the photovoltaic power evaluation index and the power condition of the photovoltaic power station in the area;
according to the classification of the operation state and the classification of the power generation state of the photovoltaic power station in the region, the fault of the photovoltaic power station in the region is diagnosed, fault information is obtained, an operation and maintenance scheme set is called, an operation and maintenance scheme is generated according to the fault information and the operation and maintenance scheme in the operation and maintenance scheme set, and the operation and maintenance of the photovoltaic power station in the region is carried out according to the operation and maintenance scheme.
Optionally, the evaluation index of the photovoltaic power station includes: equivalent generating hours and full generating time.
Optionally, the power generation state is classified, and influences of external factors including weather and power distribution overhaul are eliminated.
Optionally, the fault information includes a fault location and a repair location.
The invention also provides an operation and maintenance system for the regional photovoltaic power station, which comprises the following components:
the system comprises an initial module, a fault analysis module and a fault analysis module, wherein the initial module is used for determining typical equipment faults of a photovoltaic power station in an area, generating an equipment fault alarm set and generating an operation and maintenance scheme set aiming at the equipment fault alarm set;
the first classification module is used for evaluating the running state and the fault operation and maintenance emergency degree of the photovoltaic power station according to the novel classification of the fault alarm of the photovoltaic power station in the region and by combining the fault type and the fault quantity of the photovoltaic power station in the running period, obtaining an evaluation result and classifying the running state of the photovoltaic power station in the region according to the evaluation result;
the second classification module is used for classifying the power generation state of the photovoltaic power station in the area according to the photovoltaic power evaluation index and the power condition of the photovoltaic power station in the area;
the operation and maintenance module diagnoses faults of the photovoltaic power station in the region according to the classification of the operation state and the classification of the power generation state of the photovoltaic power station in the region, acquires fault information, calls an operation and maintenance scheme set, generates an operation and maintenance scheme according to the fault information and the operation and maintenance scheme concentrated by the operation and maintenance scheme, and performs operation and maintenance on the photovoltaic power station in the region according to the operation and maintenance scheme.
Optionally, the evaluation index of the photovoltaic power station includes: equivalent generating hours and full generating time.
Optionally, the power generation state is classified, and influences of external factors including weather and power distribution overhaul are eliminated.
Optionally, the fault information includes a fault location and a repair location.
The method is beneficial to realizing rapid diagnosis of the faults of the photovoltaic power station, determining the reasons and operation and maintenance schemes of the faults of the photovoltaic system, obviously shortening the diagnosis time of the faults, obviously improving the operation and maintenance efficiency, reducing the operation and maintenance cost and ensuring the economic benefits of the photovoltaic power station.
Drawings
FIG. 1 is a flow chart of an operation and maintenance method for a regional photovoltaic power station according to the present invention;
fig. 2 is a structural diagram of an operation and maintenance system for a regional photovoltaic power station according to the present invention.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
The invention provides an operation and maintenance method for a regional photovoltaic power station, which comprises the following steps of:
determining typical equipment faults of photovoltaic power stations in an area, generating an equipment fault alarm set, and generating an operation and maintenance scheme set aiming at the equipment fault alarm set;
according to the novel classification of fault alarms of the photovoltaic power stations in the area, the operation state and the fault operation and maintenance emergency degree of the photovoltaic power stations are evaluated by combining the types and the quantity of faults of the photovoltaic power stations in the operation period, the evaluation result is obtained, and the operation state of the photovoltaic power stations in the area is classified according to the evaluation result;
classifying the power generation state of the photovoltaic power station in the area according to the photovoltaic power evaluation index and the power condition of the photovoltaic power station in the area;
according to the classification of the operation state and the classification of the power generation state of the photovoltaic power station in the region, the fault of the photovoltaic power station in the region is diagnosed, fault information is obtained, an operation and maintenance scheme set is called, an operation and maintenance scheme is generated according to the fault information and the operation and maintenance scheme in the operation and maintenance scheme set, and the operation and maintenance of the photovoltaic power station in the region is carried out according to the operation and maintenance scheme.
The evaluation indexes of the photovoltaic power station comprise: equivalent generating hours and full generating time.
And (4) classifying the power generation state, and eliminating the influence of external factors, wherein the external factors comprise weather and power distribution maintenance.
The fault information comprises a fault position and a maintenance position.
The invention is further illustrated by the following examples:
the method comprises the following steps of combing the types of common fault alarms by collecting product specifications of inverter equipment manufacturers and combining field operation and maintenance experience according to documents such as instruction manuals, then combining documents such as equipment common fault instruction schemes and field operation and maintenance instruction manuals, forming various typical solutions by combining the field equipment operation and maintenance experience, sorting, and forming an equipment fault alarm set and an operation and maintenance scheme set, wherein the method comprises the following steps:
the power grid side abnormity comprises abnormal alarms such as power grid under-voltage abnormity, power grid over-voltage abnormity, power grid under-frequency abnormity, power grid over-frequency abnormity, power grid three-phase unbalance abnormity and the like, and the fault suggestions are suggested to contact operation and maintenance personnel of a power supply company to carry out maintenance work of a power distribution line;
equipment faults, namely fault type alarm information, such as hardware faults, grounding faults, soft start faults, driver faults and the like, which occur in fault alarms except for power grid abnormity; such equipment failure requires immediate offline operation and maintenance;
the equipment alarm comprises alarm state information including equipment abnormal alarm types, such as inverter temperature alarm, alternating current lightning arrester alarm, direct current cabinet over-temperature and the like except for power grid side abnormality and equipment faults; the equipment alarm is suitable for tracking abnormal alarm state on line and carrying out operation and maintenance work by combining electric quantity data;
other alarms including other operation states or alarm information such as standby, shutdown and startup; this type of alert information is not handled for the time being.
According to the fault warning information, the power station operation state judgment is carried out, and the method comprises the following steps:
the photovoltaic power station with the equipment fault abnormal alarm information is determined as an A-type operation state power station;
the photovoltaic power station without equipment fault and with equipment alarm type abnormal alarm information is determined as a B-type operation state power station;
positioning the photovoltaic power station which has no equipment fault, equipment alarm and only abnormal alarm information of the power grid side as a C-type operation state power station;
and the rest photovoltaic power stations locate the D-type operating state power stations.
According to the photovoltaic power station data in same platform district, classify photovoltaic power station, include:
calculating equivalent generating hours according to the electric quantity data and the installed capacity of the photovoltaic power station, wherein the formula is as follows:
Ti＝Wi/Si (1)
wherein, TiIs the equivalent generation hours, W, of the photovoltaic power station iiFor the number of generating hours of the photovoltaic plant i this day, SiThe installed capacity of the photovoltaic power station i;
calculating the average equivalent generating hours of the photovoltaic power stations in the same area
Wherein n is the number of photovoltaic power stations in the same area;
and judging the power generation state of the photovoltaic power station according to the power generation hours and the average power generation hours of the power station.
If it is
If the photovoltaic power station i is a normal electric power station (determined as a type a power station), wherein alpha is an electric power diagnosis coefficient which is usually 0.4-1;
if it is
If the photovoltaic power station i is a low-electricity power station (designated as a b-type power station);
if TiWhen the power is equal to 0, the photovoltaic power station i is a zero-power station (specified as a c-type power station)
And developing fault diagnosis and operation and maintenance scheme generation of the photovoltaic power station by combining the operation state and the power generation state diagnosis result, wherein the method comprises the following steps:
case 1: the fault codes are Aa, Ab and Ac, the fault diagnosis result is 'power station equipment fault', the operation and maintenance scheme is 'the system detects the power station fault, the fault type is a certain fault (filling alarm information of the operation state, possibly a plurality of faults), and the operation and maintenance work is recommended to be carried out immediately after the extension line is opened';
case 2: the fault codes are Ba and Ca, the fault diagnosis result is ' normal power station electric quantity ', the operation and maintenance scheme is ' normal power station electric quantity, but abnormal alarm occurs, the type is a certain alarm (filling alarm information of the operation state, possibly a plurality of alarms), and the recent arrangement of power station inspection work is recommended;
case 3: the fault code is Bb, the fault diagnosis result is 'abnormal operation of the power station, low electric quantity', the operation and maintenance scheme is 'alarm operation of the power station, low electric quantity, the alarm type is a certain alarm (filling in alarm information of the operation state, possibly a plurality of alarms), and the recent routing inspection is recommended';
case 4: the fault code is Bc, the fault diagnosis result is 'abnormal operation of the power station, the electric quantity is zero', the operation and maintenance scheme is 'abnormal operation of the power station, zero electric energy production and certain alarm type (filling alarm information of the operation state, possibly a plurality of alarms), and operation and maintenance work is recommended after an expansion line is opened';
case 5: the fault code is Cb, the fault diagnosis result is that the power station is abnormal in operation and the power generation amount is low, the operation and maintenance scheme is that the power grid side is abnormal, the power quantity of the power station is low, the alarm type is 'certain abnormity' (the alarm information of the operation state is filled, and a plurality of abnormal alarms are possible), the operation and maintenance under the open line is suggested, the protection fixed value of the power station is adjusted, and the operation and maintenance work of the distribution line is carried out;
case 6: the fault code is Cc, the fault diagnosis result is ' abnormal operation of the power station, zero generated energy ', the operation and maintenance scheme is ' abnormal side of the power grid, zero electric quantity of the power station and ' certain abnormal type of alarm ' (filling alarm information of the operation state and possibly a plurality of abnormal alarms '), the operation and maintenance under the extension line is recommended, the protection fixed value of the power station is adjusted, and the operation and maintenance work of the distribution line is carried out ';
case 7: the fault code is Da, the fault diagnosis result is ' normal operation power generation of the power station ', the operation and maintenance scheme is ' normal operation power generation of the power station ', and the inspection work is carried out according to the inspection plan ';
case 8: the fault code is Db, the fault diagnosis result is 'the power station operates normally, the generated energy is low', and the operation and maintenance scheme is 'the power station operates normally, the electric quantity is low, the abnormal weather causes the blocking of foreign matters on the photovoltaic panel, and the operation and maintenance work is recommended to be carried out under the open line';
case 9: the fault code is Dc, the fault diagnosis result is that the power station runs normally, the generated energy is zero, the operation and maintenance scheme is that the power station runs normally, the electric quantity is zero, and whether the running state of the metering ammeter and the corresponding relation between the ammeter and the power station are correct or not is suggested to be confirmed;
the invention also provides an operation and maintenance system 200 for a regional photovoltaic power station, which is shown in fig. 2 and comprises:
an initial module 201, which determines typical equipment faults of a photovoltaic power station in an area, generates an equipment fault alarm set, and generates an operation and maintenance scheme set aiming at the equipment fault alarm set;
the first classification module 202 is used for evaluating the operation state and the fault operation and maintenance emergency degree of the photovoltaic power station according to the novel classification of the fault alarm of the photovoltaic power station in the region and by combining the fault type and the fault quantity of the photovoltaic power station in the operation period, acquiring an evaluation result, and classifying the operation state of the photovoltaic power station in the region according to the evaluation result;
the second classification module 203 classifies the power generation state of the photovoltaic power station in the area according to the photovoltaic power evaluation index and the power condition of the photovoltaic power station in the area;
the operation and maintenance module 204 diagnoses faults of the photovoltaic power station in the region according to the classification of the operation state and the classification of the power generation state of the photovoltaic power station in the region, acquires fault information, calls an operation and maintenance scheme set, generates an operation and maintenance scheme according to the fault information and the operation and maintenance scheme concentrated by the operation and maintenance scheme, and performs operation and maintenance on the photovoltaic power station in the region according to the operation and maintenance scheme.
The evaluation indexes of the photovoltaic power station comprise: equivalent generating hours and full generating time.
And (4) classifying the power generation state, and eliminating the influence of external factors, wherein the external factors comprise weather and power distribution maintenance.
The fault information comprises a fault position and a maintenance position.
The method is beneficial to realizing rapid diagnosis of the faults of the photovoltaic power station, determining the reasons and operation and maintenance schemes of the faults of the photovoltaic system, obviously shortening the diagnosis time of the faults, obviously improving the operation and maintenance efficiency, reducing the operation and maintenance cost and ensuring the economic benefits of the photovoltaic power station.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The scheme in the embodiment of the application can be implemented by adopting various computer languages, such as object-oriented programming language Java and transliterated scripting language JavaScript.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (8)
1. An operation and maintenance method for a regional photovoltaic power plant, the method comprising:
determining typical equipment faults of photovoltaic power stations in an area, generating an equipment fault alarm set, and generating an operation and maintenance scheme set aiming at the equipment fault alarm set;
according to the novel classification of fault alarms of the photovoltaic power stations in the area, the operation state and the fault operation and maintenance emergency degree of the photovoltaic power stations are evaluated by combining the types and the quantity of faults of the photovoltaic power stations in the operation period, the evaluation result is obtained, and the operation state of the photovoltaic power stations in the area is classified according to the evaluation result;
classifying the power generation state of the photovoltaic power station in the area according to the photovoltaic power evaluation index and the power condition of the photovoltaic power station in the area;
according to the classification of the operation state and the classification of the power generation state of the photovoltaic power station in the region, the fault of the photovoltaic power station in the region is diagnosed, fault information is obtained, an operation and maintenance scheme set is called, an operation and maintenance scheme is generated according to the fault information and the operation and maintenance scheme in the operation and maintenance scheme set, and the operation and maintenance of the photovoltaic power station in the region is carried out according to the operation and maintenance scheme.
2. The method of claim 1, the photovoltaic power plant evaluation metrics comprising: equivalent generating hours and full generating time.
3. The method of claim 1, wherein the classification of the power generation status excludes influences of external factors, the external factors including weather and distribution maintenance.
4. The method of claim 1, the fault information comprising a fault location and a service location.
5. An operation and maintenance service system for a regional photovoltaic power plant, the system comprising:
the system comprises an initial module, a fault analysis module and a fault analysis module, wherein the initial module is used for determining typical equipment faults of a photovoltaic power station in an area, generating an equipment fault alarm set and generating an operation and maintenance scheme set aiming at the equipment fault alarm set;
the first classification module is used for evaluating the running state and the fault operation and maintenance emergency degree of the photovoltaic power station according to the novel classification of the fault alarm of the photovoltaic power station in the region and by combining the fault type and the fault quantity of the photovoltaic power station in the running period, obtaining an evaluation result and classifying the running state of the photovoltaic power station in the region according to the evaluation result;
the second classification module is used for classifying the power generation state of the photovoltaic power station in the area according to the photovoltaic power evaluation index and the power condition of the photovoltaic power station in the area;
the operation and maintenance module diagnoses faults of the photovoltaic power station in the region according to the classification of the operation state and the classification of the power generation state of the photovoltaic power station in the region, acquires fault information, calls an operation and maintenance scheme set, generates an operation and maintenance scheme according to the fault information and the operation and maintenance scheme concentrated by the operation and maintenance scheme, and performs operation and maintenance on the photovoltaic power station in the region according to the operation and maintenance scheme.
6. The system of claim 5, the photovoltaic power plant evaluation metrics comprising: equivalent generating hours and full generating time.
7. The system of claim 5, wherein the classification of the power generation status excludes influence of external factors, the external factors including weather and power distribution maintenance.
8. The system of claim 5, wherein the fault information comprises a fault location and a service location.
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| CN116307860A (en) * | 2023-02-22 | 2023-06-23 | 浙江正泰智维能源服务有限公司 | Photovoltaic power station monitoring and alarming method, device, equipment and storage medium |
Citations (7)
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