CN116823185A - Nuclear power station nuclear island installation project full period cost management method and system, electronic equipment and storage medium - Google Patents
Nuclear power station nuclear island installation project full period cost management method and system, electronic equipment and storage medium Download PDFInfo
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Abstract
The application relates to the technical field of engineering cost management, in particular to a method and a system for managing the total period cost of a nuclear island installation project of a nuclear power station, electronic equipment and a storage medium, wherein the method comprises the following steps: and acquiring the reference contract full period actual cost data of a plurality of finished projects, the actual cost data of a plurality of months corresponding to each project and the reference contract actual yield. According to the method provided by the application, according to the actual cost data of each month in the multiple completed nuclear power projects and the actual cost data of the whole period of the reference contract, the actual cost index and the standard cost index corresponding to each month are calculated, the whole period cost model of the reference contract is constructed, and then the month to be evaluated in the nuclear island installation project can be analyzed and evaluated by using the cost model, so that the cost accurate monitoring of the whole process is realized, and the actual cost and the accumulated actual cost of each month in the nuclear island installation project of the nuclear power plant are effectively managed.
Description
Technical Field
The application relates to the technical field of engineering progress management, in particular to a full-period cost management method and an engineering cost management system for a nuclear island installation project of a nuclear power station.
Background
Nuclear power is used as a clean energy source, and a plurality of nuclear power units are planned to be started each year in the current period and the future period. Because the construction period of the nuclear power station is long, the construction period from start-up to business operation of a single unit is generally about 60 months, and the single unit is used as a nuclear power station construction and installation enterprise, and in the nuclear power station construction process, the cost monitoring of the whole period is implemented under the precondition of ensuring the safety, the quality and the progress, so that the operational income of the nuclear power station construction and installation contract is effectively ensured to have important significance for the high-quality development of the enterprise.
In the related technology, the final cost and profit of the nuclear power construction project are mainly compared, the data processing process is single, and the cost and accumulated actual cost actually generated at each month in the whole project period cannot be analyzed, so that the cost data in the nuclear power plant installation project cannot be effectively managed.
Disclosure of Invention
In view of the above, the present application aims to provide a method, a system, an electronic device and a storage medium for managing the total cycle cost of a nuclear island installation project of a nuclear power plant.
In a first aspect, an embodiment of the present application provides a method for managing a full cycle cost of a nuclear island installation project of a nuclear power plant, where the method includes:
acquiring reference contract full period actual cost data of a plurality of finished projects, actual cost data of a plurality of months corresponding to each project and reference contract actual yield;
calculating an actual cost index of the first target month according to the actual cost data of the first target month and the reference contract full period actual cost data for each first target month in the project;
calculating a standard cost index corresponding to the first target month according to the actual cost indexes of the first target month and the actual yield of the reference contract, and constructing a full-period cost model of the reference contract;
acquiring an accumulated actual cost index of a second target month in a nuclear island installation project and an accumulated standard cost index of the second target month in the standard contract full period cost model;
and outputting a cost evaluation result of the second target month in the nuclear island installation project according to the comparison relation between the accumulated actual cost index and the accumulated standard cost index.
With reference to the first aspect, the actual cost data includes net profits and full cycle actual costs of the project;
the step of calculating the actual cost index of the first target month from the actual cost data of the first target month and the reference contract full period actual cost data includes:
the month actual cost progress data is calculated according to the following formula:
Pni＝(Cni÷Cn0)×100％；
wherein Pni is the actual cost index of the ith month of the nth project benchmark contract; cni is month actual cost data of the ith month of the nth project benchmark contract; cn0 is the full-period actual cost data of the nth project benchmark contract.
With reference to the first aspect, after the step of obtaining the actual yield of the reference contracts of the completed multiple projects, the method further includes:
arranging the actual yield of the reference contracts corresponding to a plurality of the projects in a descending order;
and matching weights for the actual yield of the reference contracts corresponding to each item in sequence.
With reference to the first aspect, the step of calculating a standard cost index corresponding to the first target month according to a plurality of actual cost indexes of the first target month includes:
the standard cost index for the target month is calculated according to the following equation:
Pi＝∑(Pni×Mn)；
pi is a standard cost index of the ith target month, mn is the actual yield matching weight of the reference contract corresponding to the nth item, and the sum of the actual yield matching weights of the reference contract corresponding to the nth item is 1.
With reference to the first aspect, the step of calculating a standard cost index corresponding to the first target month according to a plurality of actual cost indexes of the first target month and constructing a reference contract full-cycle cost model further includes:
and constructing a full-period cost model of the installation project of the nuclear island of the nuclear power station according to the plurality of first target months, the standard cost index corresponding to each first target month and the accumulated standard cost index.
With reference to the first aspect, the step of outputting the cost evaluation result of the second target month in the installation project of the nuclear island according to the comparison relation between the accumulated actual cost index and the accumulated standard cost index includes:
calculating the sum of the difference value of the accumulated standard cost index corresponding to the second target month and the accumulated actual cost index;
judging whether the difference value is smaller than a preset deviation threshold value or not;
if yes, outputting an evaluation result of deviation of the execution condition of the installation project of the nuclear island;
if not, outputting the execution condition of the installation project of the nuclear island to be built well or basically controlled.
In combination with the first aspect, the accumulated actual cost index of the second target month in the installation project of the nuclear island is determined in the following manner:
Bi＝(Ai÷A0)×100％；
wherein Ai is accumulated actual cost data of the i month of the installation project of the nuclear island; a0 is reference contract full-period plan total cost data of a project installed in a nuclear island; bi is the accumulated actual cost index for the second target month in the build island installation project.
In a second aspect, the present application provides an engineering progress management system, the system comprising:
the first acquisition module is used for acquiring the reference contract full period actual cost data of a plurality of completed projects, the actual cost data of a plurality of months corresponding to each project and the reference contract actual yield;
a month actual cost index calculation module, configured to calculate, for each first target month in the project, an actual cost index of the first target month according to actual cost data of the first target month and reference contract full-period actual cost data;
the model construction module is used for calculating a standard cost index corresponding to the first target month according to the actual cost indexes of the first target months and the actual yield of the reference contracts and constructing a reference contract full-period cost model;
the second acquisition module is used for acquiring an accumulated actual cost index of a second target month in the nuclear island installation project and an accumulated standard cost index of the second target month in the standard contract full period cost model;
and the comparison and evaluation module is used for outputting a cost evaluation result of the second target month in the nuclear island installation project according to the comparison relation between the accumulated actual cost index and the accumulated standard cost index.
In a third aspect, the application provides an electronic device comprising a memory storing a computer program and a processor executing the computer program to implement a method as described above.
In a fourth aspect, the present application provides a storage medium storing a computer program for execution by a processor to implement a method as described above.
The embodiment of the application has the following beneficial effects: the application provides a full-period cost management method and system for a nuclear island installation project of a nuclear power station, electronic equipment and a storage medium, wherein the method comprises the following steps: acquiring reference contract full period actual cost data of a plurality of finished projects, actual cost data of a plurality of months corresponding to each project and reference contract actual yield; calculating an actual cost index of the first target month according to the actual cost data of the first target month and the reference contract full period actual cost data for each first target month in the project; calculating a standard cost index corresponding to the first target month according to the actual cost indexes of the first target month and the actual yield of the reference contract, and constructing a full-period cost model of the reference contract; acquiring an accumulated actual cost index of a second target month in a nuclear island installation project and an accumulated standard cost index of the second target month in the standard contract full period cost model; and outputting a cost evaluation result of the second target month in the nuclear island installation project according to the comparison relation between the accumulated actual cost index and the accumulated standard cost index.
According to the method provided by the application, according to the actual cost data of each month in the multiple completed nuclear power projects and the actual cost data of the whole period of the reference contract, the actual cost index and the standard cost index corresponding to each month are calculated, the whole period cost model of the reference contract is constructed, and then the month to be evaluated in the installation project of the nuclear island is analyzed and evaluated by using the cost progress model, so that the accurate monitoring of the whole process is realized, and the actual cost and the accumulated actual cost of each month in the installation project of the nuclear island of the nuclear power plant are effectively managed.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the application and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for managing the cost of a nuclear island installation project of a nuclear power station according to an embodiment of the application;
FIG. 2 is a flow chart of a method for managing the cost of a nuclear island installation project of a nuclear power plant according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a nuclear island installation project cost management system of a nuclear power station according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In order to facilitate understanding of the present embodiment, technical terms designed by the present application will be briefly described below.
FCD: the first tank is concreted, and for nuclear power station construction, the first tank is specially used for a sign of nuclear power station construction.
Contract classification: considering that different owners and different stack types agree with contract working ranges have differences; or the group reactor nuclear power unit has differences in production/living temporary construction and the like in the first period and the non-first period, and in order to facilitate the extraction of regularity data and the establishment of a relevant cost model under the condition of similar contract working ranges, the nuclear island installation contract signed by a company and a owner or an EPC side is divided into a reference contract and an auxiliary matched service.
Reference contract: different nuclear power installation engineering contracts have similar or similar contract working ranges although different in pile, scale, engineering quantity, contract amount and the like, and certain rules exist in production and operation data in the whole period construction process. The reference contract amount generally accounts for 85% or more of the total amount of the contract.
Auxiliary supporting business: the portion of the different contracts where there is a difference in working range is called "affiliated companion service" and there is typically an independent fee among the contract fee components, such as: bulk material/equipment purchasing, bulk hoisting, production temporary construction/living temporary construction, nail supply storage, peripheral BOP sub-items, nuclear cleaning and the like.
After technical terms related to the application are introduced, application scenes and design ideas of the embodiment of the application are briefly introduced.
In the related technology, the final cost and profit of the nuclear power engineering are mainly compared, the data processing process is single, and the cost and the accumulated actual cost actually generated at each month in the whole engineering period cannot be analyzed, so that the cost data in the installation project of the nuclear power station cannot be effectively managed.
Based on this, the application provides a method for managing the total cycle cost of a nuclear island installation project of a nuclear power station, and the method comprises the following steps, in combination with the illustration of fig. 1:
s110, acquiring the reference contract full period actual cost data of a plurality of finished projects, the actual cost data of a plurality of months corresponding to each project and the reference contract actual yield.
S120, calculating the actual cost index of the first target month according to the actual cost data of the first target month and the actual cost data of the whole period of the reference contract for each first target month in the project.
And S130, calculating a standard cost index corresponding to the first target month according to the actual cost indexes of the first target months and the actual yield of the reference contracts, and constructing a full-period cost model of the reference contracts.
S140, acquiring an accumulated actual cost index of the second target month in the nuclear island installation project and an accumulated standard cost index of the second target month in the standard contract full period cost model.
S150, outputting a cost evaluation result of the second target month in the nuclear island installation project according to the comparison relation between the accumulated actual cost index and the accumulated standard cost index.
In this embodiment, the actual cost index of the first target month is calculated for the actual cost data in the complete project reference contract whole period, the actual cost data of each month in each project and the actual yield of a plurality of reference contracts, and a reference contract whole period cost model is constructed, and then the accumulated standard actual cost index of the second target month is used as an evaluation standard to evaluate the accumulated cost index of the second target month in the construction nuclear island installation project, so that the cost of any month in the construction nuclear island installation project is analyzed and evaluated, the cost of the whole process is accurately monitored, and the cost of the nuclear island installation project of the nuclear power station is effectively managed.
In combination with the first aspect, the step S120 of calculating the actual cost index of the first target month according to the actual cost data of the first target month and the actual cost data of the full period of the reference contract specifically includes:
the month actual cost progress data is calculated according to the following formula:
Pni＝(Cni÷Cn0)×100％；
wherein Pni is the actual cost index of the ith month of the nth project benchmark contract; cni is the actual cost data for the nth project benchmark contract month i; cn0 is the reference contract full period actual cost data of the nth item.
Illustrating:
the actual cost data of a nuclear island installation project of a certain nuclear power station in the 'FCD+36 month' is 1,749 ten thousand yuan, and the actual cost data of the whole period of a reference contract of the project is 152,678 ten thousand yuan; month actual cost index of "fcd+36 month":
P (FCD+36) ＝1749÷152678×100％＝1.15％。
in combination with the first aspect, after obtaining the reference contract actual yield of the plurality of completed projects in step S110, the method further includes:
arranging the actual yield of the reference contracts corresponding to the plurality of items in a descending order;
and matching weights for the actual yield of the reference contracts corresponding to each item in sequence.
The weight ratio rule is set in advance, and the weight ratio is reduced along with the reduction of the actual yield of the reference contract in general. The weight proportioning rule can be changed according to actual requirements and is not limited herein.
In this embodiment, the number of selected completed projects is 3, and the descending order of the actual yield of the reference contract corresponding to the projects is marked as D1, D2, and D3 low, respectively, and in this embodiment, the weight ratio decreases with the decrease of the actual yield of the reference contract, and the specific ratio modes are D1:70%, D2:20, and D3:10%.
With reference to the first aspect, step S130 includes the step of calculating a standard cost index corresponding to the first target month according to a plurality of actual cost indexes of the first target month, where the standard cost index specifically includes:
the standard cost index for the first target month is calculated according to the following equation:
Pi＝∑(Pni×Mn)；
pi is a standard cost index of the ith target month, mn is the actual yield matching weight of the reference contract corresponding to the nth item, and the sum of the actual yield matching weights of the reference contract corresponding to the nth item is 1.
The actual cost index of the ith target month in the D1 project is 1.26%; the actual cost index of the ith target month in the D2 project is 1.15%; the actual cost index of the ith target month in the D3 project is 1.08%;
in connection with the above example, weights are matched for the three items described above: the weight of the D1 item is 70%, the weight of the D2 item is 20%, and the weight of the D3 item is 10%.
Pi=p D1i ×70％+P D2i ×20％+P D3i ×10％
＝1.26％×70％+1.15％×20％+1.08％×10％＝1.12％。
With reference to the first aspect, the step S130 of calculating the standard cost index corresponding to the first target month according to the actual cost indexes of the first target months and the actual yields of the reference contracts and constructing the full-period cost model of the reference contract further includes:
s131, calculating an accumulated standard cost index of each first target month according to the first target months and the standard cost index corresponding to each first target month.
S132, taking the first target month as a horizontal axis, taking a standard cost index and an accumulated standard cost index corresponding to the first target month as vertical axes respectively, and marking the full-period cost model of the installation project of the constructed nuclear island in a curve form. The first number axis on the left side (as shown in connection with fig. 2) is the cumulative standard cost index, and the second vertical axis on the right side is the standard cost index corresponding to the first target month; curve a represents the cumulative standard cost index for each first target month; curve B represents the standard cost index for each first month.
It is worth to say that, with the subsequent wide application of the installation project of the nuclear island of the building nuclear power station in the safety quality management, the automation/intellectualization/digitization equipment, the continuous innovation of the construction process and construction technology, the continuous improvement of the project management level, the design optimization, the application of the middle/small modular construction technology, the change of the social labor elements and the like, the cost model of the installation project of the nuclear island of the target nuclear power station can be updated or updated by adopting the method. Wherein, when the number of the sampled completed items exceeds 5, the weight of the item with the highest actual yield of the reference contract should be not lower than 50%.
In combination with the first aspect, step S150 specifically includes outputting a cost evaluation result of the second target month in the installation project of the nuclear island according to a comparison relation between the accumulated actual cost index and the accumulated standard cost index:
s151, calculating a difference value between the accumulated standard cost index and the accumulated actual cost index corresponding to the second target month.
S152, judging whether the difference value is smaller than a preset deviation threshold value.
If yes, go to step S153, if no, go to step S154.
And S153, outputting an evaluation result of deviation of the execution condition of the installation project of the nuclear island.
And S154, outputting the evaluation result that the execution condition of the installation project in the nuclear island is good or basically controlled.
In this embodiment, a difference between the accumulated standard cost index corresponding to the second target month and the accumulated actual cost index is calculated, and it is known that when the difference is smaller than 0, the accumulated standard cost index indicating the second target month in the installation project of the nuclear island is smaller than the accumulated actual cost index, that is, the cost in the installation project of the nuclear island is higher than a preset standard, at this time, the actual cost when the installation project of the nuclear island is executed should be analyzed and controlled, and by setting a preset deviation threshold, an allowable deviation amount can be set, and the cost indicated in the deviation amount exceeds the standard but is controllable and bearable; when the preset deviation threshold is exceeded, the actual cost is seriously exceeded, corresponding deviation rectifying measures are required to be designated, and when the accumulated actual cost index exceeds 100% for the condition that the second target month is at the month of the project end, the project is not up to the operation index issued by the company, and even loss exists.
For illustration, 3 in-building island installation projects are selected, names AA, AB and AC are marked respectively, and a preset deviation threshold value is set to be-0.10%. As shown in connection with table 1-1, for item AA: the second target month is fcd+38 months, the corresponding difference is 0.18% greater than 0, which means that the month accumulated actual cost index of the project is smaller than the accumulated standard cost index, and the project execution condition is determined to be good: similarly, for the item AB, the second target month is FCD+21, the corresponding difference is-0.19%, the difference is smaller than the set deviation threshold value-0.1%, and the evaluation result of deviation of the item execution condition is output at this time so as to prompt a manager to timely assign a deviation correcting plan; similarly, for the project AC, the second target month is fcd+12, and the corresponding difference is-0.04%, and the difference exceeds the accumulated standard cost index but is smaller than the preset deviation threshold, i.e. within the controllable range, at this time, the project is output with the basically controlled prompt message.
TABLE 1-1
Preferably, the accuracy of cost evaluation in the nuclear island installation project can be improved by increasing the number of deviation thresholds.
It should be noted that since the project is in the preparation period before fcd+10 months, the cost amount actually occurring for each month is small, and thus, it is generally the case that the establishment starts from fcd+11 months in the reference contract full period cost model establishment process. The second item also typically selects the month after fcd+11 months when evaluating for the second target month.
In combination with the first aspect, the accumulated actual cost index for the second target month in the nuclear island installation project is determined as follows:
bi= (Ai/A0) ×100%; wherein Ai is accumulated actual cost data of the i month of the installation project of the nuclear island; a0 is reference contract full-period plan total cost data of a project installed in a nuclear island; bi is the accumulated actual cost index for the second target month in the build island installation project.
For example, the cumulative actual cost data for "fcd+22" month in the installation project of the nuclear island is 1050 ten thousand yuan, and the project reference contract full cycle plan total cost data is 2080 ten thousand yuan; then the cumulative actual cost index B for the term fcd+22 months (FCD+22) ＝1050÷2080×100％＝50.48％。
In addition, the cost model can be used for annual cost assessment indexes of nuclear power project issued by companies. Taking the AB project as an example: assuming that the AB project deviates by-0.19% in the cumulative actual cost index sequence for the "FCD+21" which is 12 months of the last year; the standard cost index of the examined cost model data in the time period (this year) from 'FCD+22' to 'FCD+33' is 10.54%, the company will give the next annual cost to the AB term check index reference value=10.54% +0.19% =10.73%. The method can be used for identifying and evaluating the implementation condition of the nuclear power project operation result in the economic responsibility audit in the nuclear power project implementation process. The full-period cost model can also be used as an important reference for the comparison analysis of financial reflection completion progress, project financial comprehensive budget and cash flow plan, and has important significance for the management of nuclear power engineering and civil engineering construction.
In a second aspect, the present application provides a nuclear island installation project cost management system of a nuclear power plant, and referring to fig. 3, the system includes a first acquisition module 10, a monthly actual cost index calculation module 20, a model construction module 30, a second acquisition module 40, and a comparison and evaluation module 50.
The first acquiring module 10 is configured to acquire reference contract full period actual cost data of a plurality of completed projects, and actual cost data and reference contract actual profitability of a plurality of months corresponding to each project.
The monthly actual cost index calculation module 20 is configured to calculate, for each first target month in the project, an actual cost index of the first target month from the actual cost data of the first target month and the reference contract full period actual cost data.
The model building module 30 is configured to calculate a standard cost index corresponding to the first target month according to the actual cost indexes of the first target months and the actual profitability of the reference contracts and build a full period cost model of the reference contracts.
The second obtaining module 40 is configured to obtain the accumulated actual cost index of the second target month in the installation project of the nuclear island and the accumulated standard cost index of the second target month in the full period cost model of the reference contract.
The comparison and evaluation module 50 is configured to output a cost evaluation result of the second target month in the installation project of the nuclear island according to the comparison relation between the accumulated actual cost index and the accumulated standard cost index.
In a third aspect, the present embodiment provides an electronic device, including a memory storing a computer program and a processor executing the computer program to implement the above-mentioned method.
In a fourth aspect, the present embodiment provides a storage medium storing a computer program that is executed by a processor to implement the above-described method.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system and apparatus may refer to corresponding procedures in the foregoing method embodiments, which are not described herein again.
In addition, in the description of embodiments of the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood by those skilled in the art in specific cases.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above examples are only specific embodiments of the present application for illustrating the technical solution of the present application, but not for limiting the scope of the present application, and although the present application has been described in detail with reference to the foregoing examples, it will be understood by those skilled in the art that the present application is not limited thereto: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (10)
1. A nuclear island installation project full cycle cost management method for a nuclear power plant, the method comprising:
acquiring reference contract full period actual cost data of a plurality of finished projects, actual cost data of a plurality of months corresponding to each project and reference contract actual yield;
calculating an actual cost index for each first target month in the project from the actual cost data for the first target month and the baseline contract full-period actual cost data;
calculating a standard cost index corresponding to the first target month according to the actual cost indexes of the first target month and the actual yield of the reference contract, and constructing a full-period cost model of the reference contract;
acquiring an accumulated actual cost index of a second target month in a nuclear island installation project and an accumulated standard cost index of the second target month in the standard contract full period cost model;
and outputting a cost evaluation result of the second target month in the nuclear island installation project according to the comparison relation between the accumulated actual cost index and the accumulated standard cost index.
2. The method of claim 1, wherein the actual cost data comprises net profits and full cycle actual costs of the project;
the step of calculating an actual cost index of the first target month from the actual cost data of the first target month and the reference contract full period actual cost data includes:
the month actual cost progress data is calculated according to the following formula:
Pni＝(Cni÷Cn0)×100％；
wherein Pni is the actual cost index of the ith month of the nth project benchmark contract; cni is month actual cost data of the ith month of the nth project benchmark contract; cn0 is the full-period actual cost data of the nth project benchmark contract.
3. The method of claim 1, further comprising, after the step of obtaining the reference contract actual yield for the plurality of items:
arranging the actual yield of the reference contracts corresponding to a plurality of the projects in a descending order;
and matching weights for the actual yield of the reference contracts corresponding to each item in sequence.
4. The method of claim 3, wherein the step of,
the step of calculating a standard cost index corresponding to the first target month according to a plurality of actual cost indexes of the first target month comprises the following steps:
the standard cost index for the first target month is calculated according to the following equation:
Pi＝∑(Pni×Mn)；
pi is the standard cost index of the ith first target month, mn is the actual yield matching weight of the reference contract corresponding to the nth item, and the sum of the actual yield matching weights of the reference contract corresponding to the nth item is 1.
5. The method of claim 1, wherein the step of calculating a standard cost index corresponding to the first target month from a plurality of actual cost indices of the first target month and constructing a reference contract full cycle cost model further comprises:
and constructing a full-period cost model of the installation project of the nuclear island of the nuclear power station according to the plurality of first target months, the standard cost index corresponding to each first target month and the accumulated standard cost index.
6. The method according to claim 1, wherein the step of outputting the cost evaluation result of the second target month in the nuclear island installation project based on the comparison relation of the accumulated actual cost index and the accumulated standard cost index, comprises:
calculating the sum of the difference value of the accumulated standard cost index corresponding to the second target month and the accumulated actual cost index;
judging whether the difference value is smaller than a preset deviation threshold value or not;
if yes, outputting an evaluation result of deviation of the execution condition of the installation project of the nuclear island;
if not, outputting the execution condition of the installation project of the nuclear island to be built well or controlled.
7. The method of claim 1, wherein the accumulated actual cost index for the second target month in the installation project of the nuclear island is determined as follows:
Bi＝(Ai÷A0)×100％；
wherein Ai is accumulated actual cost data of the i month of the installation project of the nuclear island; a0 is reference contract full-period plan total cost data of a project installed in a nuclear island; bi is the accumulated actual cost index for the second target month in the build island installation project.
8. A nuclear island installation project full cycle cost management system of a nuclear power plant, comprising:
the first acquisition module is used for acquiring the reference contract full period actual cost data of a plurality of completed projects, the actual cost data of a plurality of months corresponding to each project and the reference contract actual yield;
a month actual cost index calculation module, configured to calculate, for each first target month in the project, an actual cost index of the first target month according to actual cost data of the first target month and reference contract full-period actual cost data;
the model construction module is used for calculating a standard cost index corresponding to the first target month according to the actual cost indexes of the first target months and the actual yield of the reference contracts and constructing a reference contract full-period cost model;
the second acquisition module is used for acquiring an accumulated actual cost index of a second target month in the nuclear island installation project and an accumulated standard cost index of the second target month in the standard contract full period cost model;
and the comparison and evaluation module is used for outputting a cost evaluation result of the second target month in the nuclear island installation project according to the comparison relation between the accumulated actual cost index and the accumulated standard cost index.
9. An electronic device comprising a memory storing a computer program and a processor executing the computer program to implement the method of any of claims 1-7.
10. A storage medium storing a computer program to be executed by a processor to implement the method of any one of claims 1-7.
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