CN117273669A - Engineering project cost management system - Google Patents

Engineering project cost management system Download PDF

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CN117273669A
CN117273669A CN202311566366.0A CN202311566366A CN117273669A CN 117273669 A CN117273669 A CN 117273669A CN 202311566366 A CN202311566366 A CN 202311566366A CN 117273669 A CN117273669 A CN 117273669A
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魏锦华
李蕾
廖嘉
侯洋洋
高亚军
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CCCC SHEC Dong Meng Engineering Co Ltd
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Abstract

The invention belongs to the technical field of engineering project cost management, and particularly discloses an engineering project cost management system, which comprises a project basic information extraction module, a project operation data extraction module, a project maintenance data extraction module, a project self-checking data extraction module, a maintenance cost correction analysis module, a maintenance database and a maintenance correction cost confirmation terminal; according to the invention, maintenance correction analysis of the target photovoltaic project is carried out according to the operation record table, the maintenance record table and the self-checking record table, correction maintenance budget is confirmed, fine management of maintenance cost of the rear end of the photovoltaic project is realized, the defect problem existing in the current management of the maintenance cost of the rear end of the photovoltaic power generation project is solved, controllability of the cost of the photovoltaic power generation project and flexibility of cost control are further improved, untimely occurrence of maintenance update of the photovoltaic power generation is avoided, and control effect of the cost of the photovoltaic power generation project is improved.

Description

Engineering project cost management system
Technical Field
The invention belongs to the technical field of engineering project cost management, and relates to an engineering project cost management system.
Background
Along with the enhancement of people's environmental awareness and the rapid increase of urbanization, the demand for infrastructure is also increasing, under this background, has greatly promoted the development of urban environmental protection engineering project, in order to guarantee the smooth development of urban environmental protection engineering project, need manage its cost.
The urban environmental engineering includes waste water treatment, urban greening, photovoltaic power generation and other types, and for the photovoltaic power generation and other environmental engineering, cost management is currently mainly performed according to the aspects of construction scale, labor, materials and the like, and the urban environmental engineering belongs to front-end construction period management, and has certain defects in the aspects of follow-up maintenance cost management, namely: 1. the long-term performance and the economic feasibility of the photovoltaic power station are negatively affected, the feasibility of the establishment of a follow-up photovoltaic power generation maintenance strategy cannot be ensured, excessive preventive maintenance is easy to cause, thus unnecessary cost is increased, the coverage rate of maintenance cannot be ensured, expensive repairability maintenance is caused, the control of the cost of a photovoltaic power generation project is insufficient, and the flexibility is poor.
2. The maintenance and updating of the photovoltaic power generation are not timely, the maintenance budget correction is not carried out according to the actual operation condition of the photovoltaic power generation station, the development of maintenance operation of the later-stage photovoltaic power generation project is inconvenient, and the balance between the maintenance cost and the maintenance effect cannot be maintained.
3. The risk of the photovoltaic power generation project cannot be reduced, the return on investment rate of the photovoltaic power generation project cannot be improved, and the return on investment period cannot be prolonged.
Disclosure of Invention
In view of this, in order to solve the problems set forth in the background art, an engineering project cost management system is now proposed.
The aim of the invention can be achieved by the following technical scheme: the invention provides an engineering project cost management system, which comprises: and the project basic information extraction module is used for extracting the laying area of the target photovoltaic project.
And the project operation data extraction module is used for extracting an operation record table after the construction of the target photovoltaic project is completed.
And the project maintenance data extraction module is used for extracting a maintenance record table after the construction of the target photovoltaic project is completed.
And the project self-checking data extraction module is used for extracting a self-checking record table after the construction of the target photovoltaic project is completed.
The maintenance cost correction analysis module is used for carrying out maintenance correction analysis on the target photovoltaic project according to the operation record table, the maintenance record table and the self-checking record table to obtain the correction demand of the target photovoltaic project。
The maintenance database is used for storing a maintenance schedule of a target photovoltaic project, storing the set boundary operation days and the reference power generation attenuation rate of the target photovoltaic project in each operation stage, storing the reference single maintenance cost of each maintenance level corresponding to each photovoltaic paving area, and storing the reference trigger accumulated operation days of each power generation node of the photovoltaic equipment.
Maintenance and correction cost confirmation terminal for whenAnd confirming the corrected maintenance budget of the target photovoltaic project and feeding back the corrected maintenance budget.
Preferably, the performing a maintenance correction analysis of the target photovoltaic project includes: and extracting actual photovoltaic power generation amount and photovoltaic power generation environment data of each accumulated operation day from the operation record table, and evaluating the actual photovoltaic power generation amount and the photovoltaic power generation environment data of each accumulated operation day through a power generation evaluation rule to obtain the estimated photovoltaic power generation amount of each accumulated operation day.
On the abscissa of the operating dateIn the vertical coordinate of the drawing, the drawing is,constructing a power generation attenuation curve, and analyzing the power generation attenuation curve to obtain the power generation difference degree of the target photovoltaic project>。
Extracting the accumulated maintenance times, the maintenance date of each accumulated maintenance and the record maintenance level from the maintenance record table, and counting the maintenance difference degree of the target photovoltaic project。
Extracting self-checking data of each self-checking item corresponding to each accumulated operation day from the self-checking record table, and counting the equipment state difference degree of the target photovoltaic item。
Statistics of target photovoltaic project correction desirability，/>，Power generation difference, maintenance difference, equipment state difference, and +.>To round down the symbol.
Preferably, the specific implementation process of the power generation evaluation rule is as follows: and extracting the illumination intensity of each power generation time point from the photovoltaic power generation environment data of each accumulated operation day, marking on a numerical axis to obtain each marking point, and forming a marking section by the starting marking point and the stopping marking point.
And taking the marking points with the illumination intensity smaller than the illumination intensity suitable for the photovoltaic power generation as the dividing points, and marking the marking intervals according to the dividing points to obtain the scribing intervals, thereby confirming the light intensity deficiency time.
From each tiredExtracting power generation time from photovoltaic power generation environment data of operation days, taking the ratio of the light intensity deficiency time to the power generation time as the light intensity deficiency ratio, and comparing the light intensity deficiency time with the reference loss power generation amount of the unit photovoltaic panel area corresponding to the set light intensity deficiency ratio to obtain the reference loss power generation amount of the unit photovoltaic panel area corresponding to each accumulated operation day，/>Indicating the accumulated operation date number->U is a positive integer greater than 1.
Marking the paving area of the target photovoltaic project asThe estimated photovoltaic power generation amount +.f for each accumulated operating day is counted>，，/>Reference generating capacity of unit photovoltaic panel area under unit generating time length under set proper illumination intensity, < +.>Is->The power generation time period of the operation day is accumulated.
Preferably, the analyzing the power generation decay curve includes: and extracting the current accumulated operation date from the operation record table.
And extracting the set boundary operation days and the reference power generation attenuation rate of the target photovoltaic project in each operation stage from the maintenance database.
If the current accumulated operation date is within the set boundary operation date of a certain operation stage, the operation stage is taken as the current operation stage, and the reference power generation attenuation rate of the target photovoltaic project in the current operation stage is extracted。
Using the origin of the coordinate system as the starting pointFor the slope of the reference line, constructing a damping reference line on the power generation damping curve, extracting the slope from the power generation damping curve, and taking the slope as the actual power generation damping rate +.>。
Locating the number of curve segments and the total length of the curve segments above the attenuation reference line from the power generation attenuation curve, and respectively recording asAnd->。
The length of the power generation attenuation curve is recorded asCounting the power generation difference degree of a target photovoltaic project>，，/>To set the reference attenuation beyond the number of curve segments.
Preferably, the statistics of maintenance variability of the target photovoltaic project includes: and extracting a maintenance schedule of the target photovoltaic project from the maintenance database, and further extracting each scheduled maintenance date and each scheduled maintenance level of each scheduled maintenance date.
Comparing the accumulated maintenance date with each planned maintenance date, marking the maintenance date which is inconsistent with each planned maintenance date as a difference maintenance date, marking the maintenance date which is consistent with a certain planned maintenance date as a normal maintenance date, and counting the number of the difference maintenance datesAnd the number of normal maintenance days->。
Matching and comparing the record maintenance level of each normal maintenance level with the planned maintenance level, marking the normal maintenance level at the same maintenance level as a stable maintenance date, and counting the number of the stable maintenance dates。
Statistics of maintenance variability for a target photovoltaic project，/>，/>To accumulate the maintenance times.
Preferably, the statistics of the device state variability of the target photovoltaic project includes: and confirming each target power generation node according to the self-checking data of each self-checking item corresponding to each accumulated operation day, wherein each target power generation node comprises a power generation node A, a power generation node B and a power generation node C.
The accumulated operation days before the power generation node A, the power generation node B and the power generation node C of the extraction equipment are respectively recorded as、And->。
Extracting reference trigger accumulated operation days of each power generation node of the photovoltaic equipment from a maintenance database, and further screening the reference trigger accumulated operation days of the power generation node A, the power generation node B and the power generation node C, wherein the reference trigger accumulated operation days are respectively recorded as、/>And->。
Will be、/>、/>And->、/>And->Performing corresponding operation, taking the difference value as tolerance day difference, if the tolerance day difference of a certain power generation node is smaller than 0, marking the power generation node as an abnormal node, and counting the number of the abnormal nodes +.>。
Tolerance days difference of each abnormal node is recorded as，/>Representing abnormal node number, ++>N is a positive integer greater than 1, and the device state difference degree of the target photovoltaic project is counted>，，/>To set +.>The number of tolerating days for each abnormal node is poor.
Preferably, the identifying each target power generation node includes: and screening out the apparent self-checking item, the self-checking data of the transmission self-checking item and the temperature self-checking item from the self-checking data of the self-checking items corresponding to each accumulated operation date.
Taking the accumulated operation date of the self-checking data corresponding to the apparent self-checking item according to the apparent loss evaluation index as a power generation node A, taking the accumulated operation date of the self-checking data corresponding to the transmission self-checking item according to the transmission loss evaluation index as a power generation node B, and taking the accumulated operation date of the self-checking data corresponding to the temperature self-checking item according to the temperature control unbalance evaluation index as a power generation node C.
Preferably, said validating the corrected maintenance budget for the target photovoltaic project comprises: confirming the corrected maintenance level, wherein the maintenance level comprises level I maintenance and level II maintenance.
If the corrected maintenance level is I-level maintenance, confirming the increased maintenance times of the I-level maintenanceAccording to the paving area of the target photovoltaic project, the reference single maintenance cost of the grade I maintenance corresponding to the target photovoltaic project is screened out from the maintenance database and is recorded as。
If the correction maintenance level is II-level maintenance, according toThe same way as for the confirmation of the increased maintenance times of the level II maintenance +.>Screening the reference single maintenance cost of the grade II maintenance corresponding to the target photovoltaic project from the maintenance database, and marking the reference single maintenance cost as。
Extracting planned maintenance total from the maintenance schedule and recording the total amount asCounting correction maintenance budget of target photovoltaic project>，/>，/>The adjustments are calculated separately for the set budgets,indicating that the correction maintenance level is level I maintenance, +.>Indicating that the correction maintenance level is level II maintenance, +.>Indicating that the corrected maintenance level is level i maintenance and level ii maintenance.
Preferably, the confirming corrects the maintenance level, including: extracting record maintenance levels of each difference maintenance date, and counting difference maintenance ratios of I-level maintenance and II-level maintenance, wherein the difference maintenance ratios are respectively recorded asAnd->。
Screening out the planned maintenance date and the planned maintenance level of each planned maintenance date between the current date from the maintenance schedule, and counting the planned maintenance ratio of the I-level maintenance and the II-level maintenance, which are respectively recorded asAnd->。
Extracting the record maintenance level of each normal maintenance date, and counting the normal maintenance ratio of the I-level maintenance and the II-level maintenance according to the record maintenance level, wherein the record maintenance level is respectively recorded asAnd->。
Statistics of class I maintenance bias trend index，/>，Respectively setting a reference difference maintenance ratio deviation and a normal maintenance ratio deviation according to +.>Statistical means of (1) statistics of maintenance bias trend index for class II maintenance +.>。
If it isAnd->Level I maintenance is taken as a correction maintenance level if +.>And->The maintenance level II is regarded as the correction maintenance level, if +.>And->And taking the I-level maintenance and the II-level maintenance as correction maintenance levels.
Preferably, said confirming the increased number of maintenance of level i maintenance includes: will beAs the I-level maintenance ratio deviation, the I-level maintenance ratio deviation is matched and compared with each set maintenance ratio deviation by correspondingly referring to the increased maintenance times to obtain the matched increased maintenance times +.>。
Counting the number of increased maintenance times of I-level maintenance，/>，Compensating maintenance times corresponding to the set unit power generation comprehensive abnormal trend factors, < >>Increasing evaluation rules for the respective maintenance times set up, < >>Is->Or->Is true of (I)>Is->Or->Is true of (I)>To round the symbol up.
Compared with the prior art, the invention has the following beneficial effects: (1) According to the invention, maintenance correction analysis of the target photovoltaic project is carried out according to the operation record table, the maintenance record table and the self-checking record table of the target photovoltaic project, correction maintenance budget of the target photovoltaic project is confirmed, fine management of maintenance cost of the rear end of the photovoltaic project is realized, the problem of deficiency in management of the maintenance cost of the rear end of the photovoltaic power generation project at present is solved, controllability of the cost of the photovoltaic power generation project and flexibility of cost control are further improved, meanwhile, untimely occurrence of maintenance update of the photovoltaic power generation is avoided, powerful guarantee is provided for the investment return rate of the photovoltaic power generation project, and the investment return period of the photovoltaic power generation project is also effectively prolonged.
(2) According to the invention, the power generation difference degree, the maintenance difference degree and the equipment state difference degree are analyzed according to the operation record table, the maintenance record table and the self-checking record table, the target photovoltaic project correction demand degree is counted according to the power generation difference degree, the project cost correction multidimensional assessment is realized, the convincing degree and the credibility of the project cost correction judgment result are further improved, the actual operation condition of the target photovoltaic project is fully fused, and more reliable advice is provided for developing the maintenance operation of the later photovoltaic power generation project, so that the risk of the photovoltaic power generation project is reduced.
(3) According to the invention, through carrying out careful analysis on the maintenance date and the maintenance level, the maintenance correction level is confirmed, and the maintenance times are correspondingly increased, so that the correction maintenance budget of the target photovoltaic project is counted, the fine evaluation of the maintenance budget of the photovoltaic project is realized, the feasibility of formulating the follow-up photovoltaic power generation maintenance strategy is further ensured, the defects of excessive preventive maintenance and insufficient preventive maintenance are avoided, a large amount of unnecessary maintenance cost is reduced on the premise of ensuring the maintenance coverage rate, meanwhile, the triggering probability of expensive repair maintenance is also reduced, the control effect of the photovoltaic power generation project cost is improved, and the balance between the maintenance cost and the maintenance effect is also effectively maintained.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the following drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of the connection of the modules of the system of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides an engineering project cost management system, which includes a project basic information extraction module, a project operation data extraction module, a project maintenance data extraction module, a project self-checking data extraction module, a maintenance cost correction analysis module, a maintenance database and a maintenance correction cost confirmation terminal.
In the above, the maintenance cost correction analysis module is respectively connected with the project basic information extraction module, the project operation data extraction module, the project maintenance data extraction module, the project self-checking data extraction module, the maintenance database and the maintenance correction cost confirmation terminal, and the maintenance correction cost confirmation terminal is respectively connected with the project basic information extraction module, the project maintenance data extraction module and the maintenance database.
And the project basic information extraction module is used for extracting the laying area of the target photovoltaic project.
And the project operation data extraction module is used for extracting an operation record table after the construction of the target photovoltaic project is completed.
And the project maintenance data extraction module is used for extracting a maintenance record table after the construction of the target photovoltaic project is completed.
And the project self-checking data extraction module is used for extracting a self-checking record table after the construction of the target photovoltaic project is completed.
The maintenance cost correction analysis module is used for performing maintenance correction analysis on the target photovoltaic project according to the operation record table, the maintenance record table and the self-checking record table to obtain correction demand of the target photovoltaic project。
Illustratively, performing a target photovoltaic project maintenance correction analysis includes: and F1, extracting actual photovoltaic power generation amount and photovoltaic power generation environment data of each accumulated operation day from the operation record table, and evaluating the actual photovoltaic power generation amount and the photovoltaic power generation environment data of each accumulated operation day through a power generation evaluation rule to obtain the estimated photovoltaic power generation amount of each accumulated operation day.
The specific implementation process of the power generation evaluation rule is as follows: and F1-1, extracting the illumination intensity of each power generation time point from the photovoltaic power generation environment data of each accumulated operation day, marking on a numerical axis to obtain each marking point, and forming a marking section by the starting marking point and the ending marking point.
And F1-2, taking the marking points with the illumination intensity smaller than the illumination intensity suitable for the photovoltaic power generation as the dividing points, and carrying out marking interval scribing according to the dividing points to obtain each scribing interval, thereby confirming the light intensity deficiency time.
Note that, the confirmation of the light intensity deficiency period includes: and taking the scribing intervals with the starting marking points and the stopping marking points being dividing points as first intervals, obtaining the duration of each first interval according to the power generation time points of the starting marking points and the stopping marking points corresponding to each first interval, and further accumulating to obtain the light intensity deficiency duration.
F1-3, extracting power generation time from the photovoltaic power generation environment data of each accumulated operation day, taking the ratio of the light intensity deficiency time to the power generation time as the light intensity deficiency ratio, and comparing the light intensity deficiency time with the reference loss power generation amount of the unit photovoltaic panel area corresponding to the set light intensity deficiency ratio to obtain the reference loss power generation amount of the unit photovoltaic panel area corresponding to each accumulated operation day，/>Indicating the accumulated operation date number->U is a positive integer greater than 1.
F1-4, marking the paving area of the target photovoltaic project asThe estimated photovoltaic power generation amount +.f for each accumulated operating day is counted>，，/>Reference generating capacity of unit photovoltaic panel area under unit generating time length under set proper illumination intensity, < +.>Is->The power generation time period of the operation day is accumulated.
F2, with the operation date as the abscissaConstructing a power generation attenuation curve as an ordinate, and analyzing the power generation attenuation curve to obtain the power generation difference degree of the target photovoltaic project>。
Wherein analyzing the power generation decay curve comprises: f2-1, extracting the current accumulated operation date from the operation record table.
And F2-2, extracting the set boundary operation days and the reference power generation attenuation rate of the target photovoltaic project in each operation stage from the maintenance database.
F2-3, if the current accumulated operation date is within the set boundary operation date of a certain operation stage, using the operation stage as the current operation stage, extracting the reference power generation attenuation rate of the target photovoltaic project in the current operation stage。
In a specific embodiment, the number of boundary operation days is a double boundary operation day number, i.e. comprising a minimum operation day number and a maximum operation day number.
F2-4 takes the origin of the coordinate system as the starting point, takesFor the slope of the reference line, constructing a damping reference line on the power generation damping curve, extracting the slope from the power generation damping curve, and taking the slope as the actual power generation damping rate +.>。
In a specific embodiment, the actual power generation decay rate refers to the slope of the power generation decay curve corresponding to the regression line.
F2-5, hair extensionThe number of curve segments and the total length of the curve segments above the attenuation reference line are respectively recorded asAnd->。
F2-6, recording the length of the power generation attenuation curve asCounting the power generation difference degree of a target photovoltaic project>，，/>To set the reference attenuation beyond the number of curve segments.
F3, extracting the accumulated maintenance times, the maintenance date of each accumulated maintenance and the record maintenance level from the maintenance record table, and counting the maintenance difference degree of the target photovoltaic project。
Wherein, statistics target photovoltaic project's maintenance degree of difference includes: and F3-1, extracting a maintenance schedule of the target photovoltaic project from the maintenance database, and further extracting each scheduled maintenance date and each scheduled maintenance level of each scheduled maintenance date.
F3-2, comparing the accumulated maintenance date with each planned maintenance date, marking the maintenance date which is inconsistent with each planned maintenance date as a difference maintenance date, marking the maintenance date which is consistent with a certain planned maintenance date as a normal maintenance date, and counting the number of the difference maintenance datesAnd the number of normal maintenance days->。
F3-3, matching and comparing the recorded maintenance level of each normal maintenance level with the planned maintenance level, marking the normal maintenance level at the same maintenance level as a stable maintenance date, and counting the number of the stable maintenance dates。
F3-4, counting maintenance difference degree of target photovoltaic project，/>，/>To accumulate the maintenance times.
F4, extracting self-checking data corresponding to each self-checking item of each accumulated operation day from the self-checking record table, and counting the equipment state difference degree of the target photovoltaic item。
The device state difference degree of the target photovoltaic project is counted, and the method comprises the following steps of: and F4-1, confirming each target power generation node according to the self-checking data of each self-checking item corresponding to each accumulated operation day, wherein each target power generation node comprises a power generation node A, a power generation node B and a power generation node C.
Further, identifying each target power generation node includes: and Y1, screening out apparent self-checking items, self-checking data of transmission self-checking items and temperature self-checking items from the self-checking data of the self-checking items corresponding to each accumulated operation day.
And Y2, taking the accumulated operation date of the self-checking data corresponding to the apparent self-checking item according to the apparent loss evaluation index as a power generation node A, taking the accumulated operation date of the self-checking data corresponding to the transmission self-checking item according to the transmission loss evaluation index as a power generation node B, and taking the accumulated operation date of the self-checking data corresponding to the temperature self-checking item according to the temperature control unbalance evaluation index as a power generation node C.
In a specific embodiment, the self-test data of the apparent self-test item includes, but is not limited to, a number of corrosions, a corrosion area of each corrosion, a number of cracks, and a crack area of each crack, wherein the apparent loss evaluation index includes, but is not limited to, a number of corrosions, a number of cracks, a corrosion area, and a crack area, and when any one of the number of corrosions, a sum of areas of corrosion areas of each corrosion, the number of cracks, and the sum of areas of each crack reaches the apparent loss evaluation index, the self-test data of the apparent self-test item is confirmed to conform to the apparent loss evaluation index.
In a specific embodiment, the detected data of the transmission self-test item is a maximum transmission current difference and a maximum transmission voltage difference, the transmission loss index is a current difference and a voltage difference, and when the maximum transmission current difference is greater than the current difference in the transmission loss index or the maximum transmission voltage difference is greater than the voltage difference in the transmission loss index, it is confirmed that the detected data of the transmission self-test item meets the transmission loss index.
In another embodiment, the self-test data of the temperature self-test item is an infrared thermosensitive image of each photovoltaic detection area, and the temperature control unbalance evaluation index is a highest temperature value and an adjacent temperature difference. And screening out the distribution temperature values of each temperature distribution area according to the infrared thermosensitive image of each photovoltaic detection area, further screening out the highest distribution temperature and the lowest distribution temperature, and recording the difference value of the highest distribution temperature and the lowest distribution temperature as a distribution temperature difference, namely when any one of the highest distribution temperature and the distribution temperature difference of a certain photovoltaic detection area reaches a temperature control unbalance evaluation index, confirming that the self-checking data of the temperature self-checking item accords with the temperature control unbalance evaluation index.
F4-2, the accumulated operation days before the extraction equipment generating node A, the generating node B and the generating node C are respectively recorded as、/>And->。
F4-3, extracting reference trigger accumulated operation days of each power generation node of the photovoltaic equipment from a maintenance database, and further screening the reference trigger accumulated operation days of the power generation node A, the power generation node B and the power generation node C, wherein the reference trigger accumulated operation days are respectively recorded as、/>And。
f4-4, will、/>、/>And->、/>And->Performing corresponding operation, taking the difference value as tolerance day difference, if the tolerance day difference of a certain power generation node is smaller than 0, marking the power generation node as an abnormal node, and counting the number of the abnormal nodes +.>。
F4-5, tolerance days difference of each abnormal node is recorded as，/>Representing different kindsConstant node number->N is a positive integer greater than 1, and the device state difference degree of the target photovoltaic project is counted>，，/>To set +.>The number of tolerating days for each abnormal node is poor.
F5, calculating target photovoltaic project correction demand degree，，/>Power generation difference, maintenance difference, equipment state difference, and +.>To round down the symbol.
According to the embodiment of the invention, the power generation difference degree, the maintenance difference degree and the equipment state difference degree are analyzed according to the operation record table, the maintenance record table and the self-checking record table, the target photovoltaic project correction demand degree is counted according to the power generation difference degree, the project cost correction multidimensional assessment is realized, the convincing power and the credibility of the project cost correction judgment result are further improved, the actual operation condition of the target photovoltaic project is fully fused, and more reliable advice is provided for developing maintenance operation of the later photovoltaic power generation project, so that the risk of the photovoltaic power generation project is reduced.
The maintenance database is used for storing a maintenance schedule of a target photovoltaic project, storing the set boundary operation days and the reference power generation attenuation rate of the target photovoltaic project in each operation stage, storing the reference single maintenance cost of each maintenance level corresponding to each photovoltaic laying area, and storing the reference trigger accumulated operation days of each power generation node of the photovoltaic equipment.
The maintenance correction cost confirmation terminal is used for whenAnd confirming the corrected maintenance budget of the target photovoltaic project and feeding back the corrected maintenance budget.
Illustratively, validating the corrected maintenance budget for the target photovoltaic project includes: w1, confirming and correcting maintenance levels, wherein the maintenance levels comprise level I maintenance and level II maintenance.
In one embodiment, level I maintenance is structural inspection and replacement, wherein structural inspection includes, but is not limited to, inspection cables, joints, connectors, photovoltaic brackets and support structures, and level II maintenance is performance inspection and maintenance, wherein performance inspection includes, but is not limited to, power generation and temperature of the photovoltaic panels.
Understandably, confirming the correct maintenance level includes: w1-1, extracting record maintenance levels of each difference maintenance date, and counting difference maintenance ratios of I-level maintenance and II-level maintenance, wherein the difference maintenance ratios are respectively recorded asAnd->。
W1-2, screening out the planned maintenance date and the planned maintenance level of each planned maintenance date between the current date from the maintenance schedule, and counting the planned maintenance ratio of the I-level maintenance and the II-level maintenance, which are respectively recorded asAnd->。
W1-3, extractionRecording maintenance levels of each normal maintenance date, and counting the normal maintenance ratios of the I-level maintenance and the II-level maintenance according to the levels, wherein the normal maintenance ratios are respectively recorded asAnd->。
The differential maintenance ratio of the I-level maintenance is the ratio of the number of differential maintenance dates of the I-level maintenance to the number of differential maintenance dates, the differential maintenance ratio of the II-level maintenance is the ratio of the number of differential maintenance dates of the II-level maintenance to the number of differential maintenance dates, the planned maintenance ratio of the I-level maintenance is the ratio of the number of planned maintenance dates of the I-level maintenance to the number of planned maintenance dates, the planned maintenance ratio of the II-level maintenance is the ratio of the number of planned maintenance dates of the II-level maintenance to the number of planned maintenance dates, the normal maintenance ratio of the I-level maintenance is the ratio of the number of normal maintenance dates of the I-level maintenance to the number of normal maintenance dates, and the normal maintenance ratio of the II-level maintenance is the ratio of the number of normal maintenance dates of the II-level maintenance to the number of normal maintenance dates.
W1-4, statistics of maintenance bias trend index of I-level maintenance，，/>Respectively setting a reference difference maintenance ratio deviation and a normal maintenance ratio deviation according to +.>Statistical means of (1) statistics of maintenance bias trend index for class II maintenance +.>。
W1-5, ifAnd->Level I maintenance is taken as a correction maintenance level if +.>And->The maintenance level II is regarded as the correction maintenance level, if +.>And->And taking the I-level maintenance and the II-level maintenance as correction maintenance levels.
W2, if the corrected maintenance level is I-level maintenance, confirming the increased maintenance times of the I-level maintenanceAccording to the paving area of the target photovoltaic project, the reference single maintenance cost of the grade I maintenance corresponding to the target photovoltaic project is screened out from a maintenance database and is marked as +.>。
Further, confirming the increased number of maintenance of the level i maintenance includes: w2-1, willAs the I-level maintenance ratio deviation, the I-level maintenance ratio deviation is matched and compared with each set maintenance ratio deviation by correspondingly referring to the increased maintenance times to obtain the matched increased maintenance times +.>。
W2-2, counting the increased maintenance times of I-level maintenance，，/>Compensating maintenance times corresponding to the set unit power generation comprehensive abnormal trend factors, < >>Increasing evaluation rules for the respective maintenance times set up, < >>Is thatOr->Is true of (I)>Is->Or->It is true that the method is that,to round the symbol up.
According to the embodiment of the invention, the maintenance date and the maintenance level are carefully analyzed, so that the correction maintenance level and the correction maintenance level are confirmed to correspondingly increase the maintenance times, the correction maintenance budget of the target photovoltaic project is counted, the fine evaluation of the maintenance budget of the photovoltaic project is realized, the feasibility of formulating the follow-up photovoltaic power generation maintenance strategy is further ensured, the defects of excessive preventive maintenance and insufficient preventive maintenance are avoided, a large amount of unnecessary maintenance cost is reduced on the premise of ensuring the maintenance coverage rate, meanwhile, the expensive restorative maintenance triggering probability is also reduced, the control effect of the photovoltaic power generation project cost is improved, and the balance between the maintenance cost and the maintenance effect is effectively maintained.
W3, if the corrected maintenance level is II-level maintenance, according to the following stepsThe same way as for the confirmation of the increased maintenance times of the level II maintenance +.>Screening out the reference single maintenance cost of the corresponding II-level maintenance of the target photovoltaic project from the maintenance database, and marking the reference single maintenance cost as +.>。
W4, extracting the planned maintenance total amount from the maintenance schedule table to be recorded asCounting correction maintenance budget of target photovoltaic project>，/>，/>The adjustments are calculated separately for the set budgets,indicating that the correction maintenance level is level I maintenance, +.>Indicating that the correction maintenance level is level II maintenance, +.>Indicating that the corrected maintenance level is level i maintenance and level ii maintenance.
According to the embodiment of the invention, the maintenance correction analysis of the target photovoltaic project is carried out according to the operation record table, the maintenance record table and the self-checking record table of the target photovoltaic project, the correction maintenance budget of the target photovoltaic project is confirmed, the fine management of the maintenance cost of the rear end of the photovoltaic project is realized, the problem of the defect in the management of the later maintenance cost of the photovoltaic power generation project at present is solved, the controllability of the cost of the photovoltaic power generation project and the flexibility of cost control are further improved, the untimely occurrence of maintenance update of the photovoltaic power generation is avoided, the powerful guarantee is provided for the investment return rate of the photovoltaic power generation project, and the investment return period of the photovoltaic power generation project is also effectively prolonged.
The foregoing is merely illustrative and explanatory of the principles of this invention, as various modifications and additions may be made to the specific embodiments described, or similar arrangements may be substituted by those skilled in the art, without departing from the principles of this invention or beyond the scope of this invention as defined in the claims.

Claims (10)

1. An engineering project cost management system, which is characterized in that: the system comprises:
the project basic information extraction module is used for extracting the laying area of the target photovoltaic project;
the project operation data extraction module is used for extracting an operation record table after the construction of the target photovoltaic project is completed;
the project maintenance data extraction module is used for extracting a maintenance record table after the construction of the target photovoltaic project is completed;
the project self-checking data extraction module is used for extracting a self-checking record table after the construction of the target photovoltaic project is completed;
the maintenance cost correction analysis module is used for carrying out maintenance correction analysis on the target photovoltaic project according to the operation record table, the maintenance record table and the self-checking record table to obtain the correction demand of the target photovoltaic project；
The maintenance database is used for storing a maintenance schedule of a target photovoltaic project, storing the set boundary operation days and the reference power generation attenuation rate of the target photovoltaic project in each operation stage, storing the reference single maintenance cost of each maintenance level corresponding to each photovoltaic paving area, and storing the reference trigger accumulated operation days of each power generation node of the photovoltaic equipment;
maintenance and correction cost confirmation terminal for whenAnd confirming the corrected maintenance budget of the target photovoltaic project and feeding back the corrected maintenance budget.
2. An engineering project cost management system according to claim 1, wherein: the performing a maintenance correction analysis of a target photovoltaic project includes:
extracting actual photovoltaic power generation amount and photovoltaic power generation environment data of each accumulated operation day from the operation record table, and evaluating the actual photovoltaic power generation amount and the photovoltaic power generation environment data of each accumulated operation day through a power generation evaluation rule to obtain the estimated photovoltaic power generation amount of each accumulated operation day;
on the abscissa of the operating dateConstructing a power generation attenuation curve as an ordinate, and analyzing the power generation attenuation curve to obtain the power generation difference degree of the target photovoltaic project>；
Extracting the accumulated maintenance times, the maintenance date of each accumulated maintenance and the record maintenance level from the maintenance record table, and counting the maintenance difference degree of the target photovoltaic project；
Extracting self-checking data of each self-checking item corresponding to each accumulated operation day from the self-checking record table, and counting the equipment state difference degree of the target photovoltaic item；
Statistics of target photovoltaic projectsCorrecting the degree of demand，/>，Power generation difference, maintenance difference, equipment state difference, and +.>To round down the symbol.
3. An engineering project cost management system according to claim 2, wherein: the specific implementation process of the power generation evaluation rule is as follows:
extracting the illumination intensity of each power generation time point from the photovoltaic power generation environment data of each accumulated operation day, marking on a numerical axis to obtain each marking point, and forming a marking interval by the starting marking point and the stopping marking point;
marking the marking points with the illumination intensity smaller than the illumination intensity suitable for the photovoltaic power generation as the dividing points, and marking the marking intervals according to the dividing points to obtain the marking intervals, thereby confirming the light intensity deficiency time;
extracting power generation time from the photovoltaic power generation environment data of each accumulated operation day, taking the ratio of the light intensity deficiency time to the power generation time as the light intensity deficiency ratio, and comparing the light intensity deficiency time with the reference loss power generation amount of the unit photovoltaic panel area corresponding to the set light intensity deficiency ratio to obtain the reference loss power generation amount of the unit photovoltaic panel area corresponding to each accumulated operation day，/>Indicating the accumulated operation date number->U is a positive integer greater than 1;
marking the paving area of the target photovoltaic project asThe estimated photovoltaic power generation amount +.f for each accumulated operating day is counted>，，/>Reference generating capacity of unit photovoltaic panel area under unit generating time length under set proper illumination intensity, < +.>Is->The power generation time period of the operation day is accumulated.
4. An engineering project cost management system according to claim 2, wherein: the analyzing the power generation decay curve includes:
extracting the current accumulated operation date from the operation record table;
extracting the set boundary operation days and the reference power generation attenuation rate of the target photovoltaic project in each operation stage from a maintenance database;
if the current accumulated operation date is within the set boundary operation date of a certain operation stage, the operation stage is taken as the current operation stage, and the reference power generation attenuation rate of the target photovoltaic project in the current operation stage is extracted；
In a coordinate systemThe point is the starting point, byFor the slope of the reference line, constructing a damping reference line on the power generation damping curve, extracting the slope from the power generation damping curve, and taking the slope as the actual power generation damping rate +.>；
Locating the number of curve segments and the total length of the curve segments above the attenuation reference line from the power generation attenuation curve, and respectively recording asAnd->；
The length of the power generation attenuation curve is recorded asCounting the power generation difference degree of a target photovoltaic project>，，/>To set the reference attenuation beyond the number of curve segments.
5. An engineering project cost management system according to claim 2, wherein: the statistics of maintenance variability of the target photovoltaic project includes:
extracting a maintenance schedule of a target photovoltaic project from a maintenance database, and further extracting each scheduled maintenance date and each scheduled maintenance level of each scheduled maintenance date;
date of each accumulated maintenance and each planComparing the maintenance dates, marking the maintenance date which is inconsistent with each planned maintenance date as a differential maintenance date, marking the maintenance date which is consistent with a certain planned maintenance date as a normal maintenance date, and counting the number of differential maintenance datesAnd the number of normal maintenance days->；
Matching and comparing the record maintenance level of each normal maintenance level with the planned maintenance level, marking the normal maintenance level at the same maintenance level as a stable maintenance date, and counting the number of the stable maintenance dates；
Statistics of maintenance variability for a target photovoltaic project，/>，/>To accumulate the maintenance times.
6. An engineering project cost management system according to claim 2, wherein: the statistics of the device state variability of the target photovoltaic project includes:
according to the self-checking data of each self-checking item corresponding to each accumulated operation day, each target power generation node is confirmed, wherein each target power generation node comprises a power generation node A, a power generation node B and a power generation node C;
the accumulated operation days before the power generation node A, the power generation node B and the power generation node C of the extraction equipment are respectively recorded as、/>And；
extracting reference trigger accumulated operation days of each power generation node of the photovoltaic equipment from a maintenance database, and further screening the reference trigger accumulated operation days of the power generation node A, the power generation node B and the power generation node C, wherein the reference trigger accumulated operation days are respectively recorded as、/>And->；
Will be、/>、/>And->、/>And->Performing corresponding operation, taking the difference value as tolerance day difference, if the tolerance day difference of a certain power generation node is smaller than 0, marking the power generation node as an abnormal node, and counting the number of the abnormal nodes +.>；
Tolerance days difference of each abnormal node is recorded as，/>Representing abnormal node number, ++>N is a positive integer greater than 1, and the device state difference degree of the target photovoltaic project is counted>，/>，To set +.>The number of tolerating days for each abnormal node is poor.
7. An engineering project cost management system according to claim 6, wherein: the identifying each target power generation node includes:
screening apparent self-checking items, transmission self-checking items and self-checking data of temperature self-checking items from the self-checking data of the self-checking items corresponding to each accumulated operation date;
taking the accumulated operation date of the self-checking data corresponding to the apparent self-checking item according to the apparent loss evaluation index as a power generation node A, taking the accumulated operation date of the self-checking data corresponding to the transmission self-checking item according to the transmission loss evaluation index as a power generation node B, and taking the accumulated operation date of the self-checking data corresponding to the temperature self-checking item according to the temperature control unbalance evaluation index as a power generation node C.
8. An engineering project cost management system according to claim 5, wherein: the validating the corrected maintenance budget for the target photovoltaic project includes:
confirming correction maintenance levels, wherein the maintenance levels comprise level I maintenance and level II maintenance;
if the corrected maintenance level is I-level maintenance, confirming the increased maintenance times of the I-level maintenanceAccording to the paving area of the target photovoltaic project, the reference single maintenance cost of the grade I maintenance corresponding to the target photovoltaic project is screened out from a maintenance database and is marked as +.>；
If the correction maintenance level is II-level maintenance, according toAnd the same way as the confirmation mode of the (1) confirms the increased maintenance times of the II-level maintenanceScreening out the reference single maintenance cost of the corresponding II-level maintenance of the target photovoltaic project from the maintenance database, and marking the reference single maintenance cost as +.>；
Extracting planned maintenance total from the maintenance schedule and recording the total amount asStatistics of corrected maintenance budget for a target photovoltaic project，/>，/>Calculate the adjustment for the set budgets, respectively, +.>Indicating that the correction maintenance level is level I maintenance, +.>Indicating that the correction maintenance level is level II maintenance, +.>Indicating that the corrected maintenance level is level i maintenance and level ii maintenance.
9. An engineering project cost management system according to claim 8, wherein: the validating corrects a maintenance level, comprising:
extracting record maintenance levels of each difference maintenance date, and counting difference maintenance ratios of I-level maintenance and II-level maintenance, wherein the difference maintenance ratios are respectively recorded asAnd->；
Screening out the planned maintenance date and the planned maintenance level of each planned maintenance date between the current date from the maintenance schedule, and counting the planned maintenance ratio of the I-level maintenance and the II-level maintenance, which are respectively recorded asAnd->；
Extracting the record maintenance level of each normal maintenance date, and counting the normal maintenance ratio of the I-level maintenance and the II-level maintenance according to the record maintenance level, wherein the record maintenance level is respectively recorded asAnd->；
Statistics of class I maintenance bias trend index，/>，Respectively setting a reference difference maintenance ratio deviation and a normal maintenance ratio deviation according to +.>Statistical means of (1) statistics of maintenance bias trend index for class II maintenance +.>；
If it isAnd->Level I maintenance is taken as a correction maintenance level if +.>And->The maintenance level II is regarded as the correction maintenance level, if +.>And->And taking the I-level maintenance and the II-level maintenance as correction maintenance levels.
10. An engineering project cost management system according to claim 9, wherein: the step of confirming the increased maintenance times of the I-level maintenance comprises the following steps:
will beAs the I-level maintenance ratio deviation, the I-level maintenance ratio deviation is matched and compared with each set maintenance ratio deviation by correspondingly referring to the increased maintenance times to obtain the matched increased maintenance times +.>；
Counting the number of increased maintenance times of I-level maintenance，/>，Compensating maintenance times corresponding to the set unit power generation comprehensive abnormal trend factors, < >>Increasing evaluation rules for the respective maintenance times set up, < >>Is->Or->Is true of (I)>Is->Or->Is true of (I)>To round the symbol up.
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