Electric power engineering project balance control system and method

Abstract

The invention discloses an electric power engineering project balance control system and method. The system comprises a project establishment module, a database, a prediction module, an information updating module, a correction module, a sub-project information updating module, an accounting module, a judgment module and a balance module. According to the method, the total project is divided into the plurality of sub-projects, the sub-project framework is established, and the plurality of sub-projects are managed, so that the project management efficiency is improved, and when the three stages of the construction period of each sub-project expires, the actual consumption cost of the three stages of the construction period of each sub-project is calculated; the judgment module obtains the actual consumption cost when the construction period of the three stages expires, carries out comparative analysis on the actual consumption cost and the predicted cost, carries out cost regulation and control, periodically adjusts the cost budget of each sub-project, strictly monitors the periodic actual consumption cost of each sub-project, and guarantees the balance rate of the construction of the sub-projects and the total project.

Description

Technical Field

[0001] The invention relates to a power engineering project surplus control system and method, belonging to the technical field of power engineering. Background Art

[0002] Power engineering refers to engineering related to the production, transmission and distribution of electric energy, covering all aspects of power generation, transmission, transformation, distribution and consumption. The construction of power engineering usually requires a large amount of capital investment. Accurate cost can help project managers allocate funds reasonably.

[0003] The analogy method or unit valuation method is usually used in the cost calculation of power engineering projects. However, the cost of power engineering projects is a multivariable and highly nonlinear problem. During the construction period of power engineering projects, the overall project cost will also be affected by fluctuations in market prices of materials, equipment, and labor. The construction period will also be extended due to force majeure factors such as weather and environment. Under the influence of multiple factors, inaccurate cost forecasts will occur. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a power engineering cost prediction and surplus control system and method for reducing project risks and ensuring project surplus rate.

[0005] In order to achieve the above-mentioned object, the technical solution proposed by the present invention is: a power engineering project balance control system, including a project establishment module, a database, a prediction module, an information update module, a correction module, a sub-project information update module, a calculation module, a determination module and a balance module;

[0006] The project establishment module is used to establish a general project framework according to the project plan, and divide the general project into multiple sub-project frameworks according to the general project framework;

[0007] The database is used to store information of each sub-project;

[0008] The prediction module is connected to the database, and is used to read the sub-project information, divide the progress of each sub-project into three stages, predict the cost of each sub-project in the three stages, and accumulate them to obtain the total predicted cost required for the project construction;

[0009] The information updating module is used to determine the factors affecting the project construction cost and update the fluctuation information of each influencing factor during the project construction process;

[0010] The correction module is used to correct the cost of each sub-project predicted by the prediction module based on the fluctuation information of each influencing factor during the project construction process;

[0011] The sub-project information updating module is used to regularly update the progress of the sub-projects;

[0012] The accounting module is connected to the sub-project information updating module to obtain the consumption cost details of each sub-project at the end of the three-stage construction period, and calculate the actual consumption cost of each sub-project at the end of the three-stage construction period;

[0013] The determination module is connected to the accounting module to obtain the actual consumption cost of the sub-project at the end of the three phases of the construction period, and compare it with the revised predicted cost to perform cost control;

[0014] The surplus module is used to calculate the surplus rate when the progress of the sub-project reaches 100%, integrate and summarize the actual consumption costs of each sub-project, obtain the total project consumption actual cost Ca, and calculate the project construction surplus rate, surplus rate = (predicted total cost Cs required for project construction - total project consumption actual cost Ca) / predicted total cost Cs required for project construction * 100%.

[0015] The above technical solution is further designed as follows: when constructing the sub-project framework, the project establishment module divides the total project project into multiple sub-project projects according to the total project framework, and establishes multiple sub-project frameworks according to the project construction plans of the multiple sub-projects, the project construction progress promotion plan and the predicted total completion period of the sub-projects.

[0016] The forecasting module adopts a bottom-up estimation method when making cost forecasts, decomposing the project into multiple tasks or work packages, making cost estimates for each task or work package, and summarizing the costs of all tasks or work packages to obtain a total cost forecast for the project.

[0017] The prediction module reads the sub-project information stored in the database, divides the progress of the sub-project into stages, and performs cost prediction, dividing the progress of each sub-project into three stages, the first stage is 0%-30%, the second stage is 30%-60% and the third stage is 60%-100%, obtains the equipment purchase cost, construction and installation engineering cost, design and survey cost, foundation construction cost and project management cost of each sub-project, predicts the cost required for the construction of each sub-project, denoted as Ci, and accumulates the predicted total cost required for the construction of the project, denoted as Cs, sets the upper limit of the cost consumption when the three stages of the construction period of each sub-project expire, and denoted as C1max, C2max and C3max respectively, sets the lower limit of the cost consumption when the three stages of the construction period of each sub-project expire, and denoted as C1min, C2min and C3min respectively.

[0018] When the information update module updates the factors affecting the project construction cost, the update frequency is set to regular update, and the update cycle is set.

[0019] The correction module adopts a parameter adjustment method during correction, and dynamically adjusts the predicted costs of each sub-project through the prediction module based on updated fluctuation information of factors affecting project costs.

[0020] When the sub-project information updating module updates the progress of a sub-project, the project status of multiple sub-projects is entered into the database. The sub-project information updating module obtains the sub-project information stored in the database and updates the sub-project information in a timely manner. The entered sub-project information includes: the completion amount of each stage of the sub-project progress, the unfinished amount of each stage of the sub-project progress and the sub-project consumption cost details.

[0021] When calculating the cost, the accounting module calculates the actual consumption cost of the first stage of the subproject when the progress of the subproject reaches 30%, recorded as C1a; when the progress of the subproject reaches 60%, the actual consumption cost of the second stage of the subproject is calculated, recorded as C2a; when the progress of the subproject reaches 100%, the actual consumption cost of the third stage of the subproject is calculated, recorded as C3a.

[0022] When the first phase of the construction period expires, the judgment module compares the costs and performs cost control. When C1a≤C1min, it means that the cost control of the first phase of the project is appropriate. When C1min<C1a<C1max, it means that the sub-project does not need to make cost control adjustments. When C1a=C1max, it means that there is a risk in cost control. When C1a>C1max, based on the fact that the actual consumption cost of the first phase of the sub-project exceeds the upper limit of the consumption cost when the first phase of the construction period expires, the upper limit of the consumption cost C2max of the second phase of the construction period of the project is compressed. The compressed value of the upper limit of the consumption cost C2max when the second phase of the construction period expires = the actual consumption cost C1a of the first phase - the upper limit of the consumption cost C1max when the first phase of the construction period expires; the second phase of the construction period When the construction period expires, the judgment module compares the costs and performs cost control. When C2a≤C2min, it means that the cost control of the second stage of the sub-project is appropriate. When C2min<C2a<C2max, it means that there is no need to adjust the cost control. When C2a=C2max, it means that there is a risk in the cost control of the sub-project. When C2a>C2max, based on the fact that the actual consumption cost of the second stage of the project exceeds the upper limit of the consumption cost when the construction period expires, the upper limit of the consumption cost C3max of the second stage of the project when the construction period expires is compressed. The compressed value of the upper limit of the consumption cost C3max when the construction period of the third stage expires = the actual consumption cost C2a of the second stage - the upper limit of the consumption cost C2max when the construction period of the second stage expires. When the construction period of the third stage expires, the balance calculation is performed.

[0023] A power engineering project surplus control system comprises the following steps:

[0024] Step 1: Establish a general project framework according to the project plan, divide the general project into multiple sub-projects according to the general project framework, and establish multiple sub-project frameworks;

[0025] Step 2: Store the information of each sub-project into the database;

[0026] Step 3: Read the sub-project engineering information stored in the database, divide the progress of each sub-project into three stages, predict the three-stage costs of multiple sub-projects, and summarize and integrate the costs to obtain the total cost required for the predicted project engineering construction;

[0027] Step 4: Determine the factors that affect the project construction cost, and regularly update the fluctuation information of each influencing factor according to the factors that affect the project construction cost during the project construction process;

[0028] Step 5: Regularly obtain updated information on factors affecting project construction costs and re-forecast project costs;

[0029] Step 6: Regularly update the progress of sub-projects;

[0030] Step 7: When the three phases of each sub-project are due, obtain the consumption cost details of the three phases of each sub-project when the three phases of the project are due, and calculate the actual consumption cost of the three phases of each sub-project when the three phases of the project are due;

[0031] Step 8: When the three phases of the sub-project are completed, the actual consumption costs at the end of the three phases are obtained, compared with the predicted costs, and cost control is performed;

[0032] Step 9: When the progress of the sub-project reaches 100%, calculate the surplus rate, integrate and summarize the actual consumption costs of the three stages of each sub-project, obtain the actual consumption cost Ca of the total project, and calculate the surplus rate of the project construction.

[0033] The beneficial effects of the present invention are:

[0034] The present invention improves project management efficiency and disperses risks by dividing the total project into multiple sub-projects, establishing a sub-project framework, and managing multiple sub-projects. By storing the information of the total project and each sub-project in a structured manner in a database, the data of multiple sub-projects can be centrally managed, the progress of each sub-project can be divided into three stages, the costs of the three stages of multiple sub-projects can be predicted, and the costs can be summarized and integrated. The costs of each stage of the sub-projects can be predicted and managed separately, and the costs of the sub-projects can be adjusted in time to ensure the surplus rate of the project. By determining the factors affecting the project construction cost, and regularly updating the factors affecting the project construction cost during the project construction process The correction module obtains the fluctuation information and updates the factors affecting the project construction cost regularly, and dynamically adjusts and corrects the preliminary predicted construction costs Ci of each sub-project to ensure the accuracy of the cost forecast; when the three-stage construction period of each sub-project expires, the actual consumption cost of the three-stage construction period of each sub-project is calculated. When the three-stage construction period of the sub-project expires, the judgment module obtains the actual consumption cost of the three-stage construction period, and compares and analyzes it with the predicted cost and conducts cost regulation, adjusts the cost budget of each sub-project in stages, and strictly monitors the three-stage costs of each sub-project and regulates the cost budget of the next stage according to the actual consumption cost, reduces project risks, and ensures the surplus rate of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of a power engineering project surplus control system proposed by the present invention;

[0036] Figure 2 The present invention is a flowchart of a method for controlling a surplus of an electric power engineering project. DETAILED DESCRIPTION

[0037] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Embodiment 1

[0039] Reference Figure 1 , a power engineering cost prediction and balance control system, including a project establishment module, a database, a prediction module, an information update module, a correction module, a sub-project information update module, a calculation module, a determination module and a balance module;

[0040] The project establishment module is used to establish the overall project framework according to the project plan, divide the overall project into multiple sub-projects according to the overall project framework, and establish multiple sub-project frameworks according to the project construction plans of multiple sub-projects, the project construction progress promotion plan and the predicted total completion period of the sub-projects. The overall project framework includes the basic information of the project, the scale and technical parameters of the project, the project schedule, the project organizational structure information, etc. The sub-project framework also includes the basic information of the sub-project, the scale and technical parameters of the sub-project, the sub-project schedule, the sub-project organizational structure information, etc.

[0041] The database is used to store the information of the overall project and each sub-project in a structured manner. The information includes basic project information, project progress information, project equipment and material information, etc. Different types of data are stored in different data tables, and the relationship between tables is defined to achieve data association and integration. When accessing the database, the client connects to the server through a wireless network. The server receives the database request from the client. The server configures firewall rules to restrict access to the database to only authorized IP addresses or users. After the client sends a database request to the server, the authentication device decides whether to allow the client to access the database based on the authentication information provided. The authentication device can be an independent hardware device, such as an authentication token, a smart card, etc., or a software module, such as user name and password verification, a digital certificate, etc. When the authentication is passed, the server performs corresponding operations according to the type and content of the request, such as querying the database, inserting data, updating data, etc. Then, the server returns the operation result to the client, and the client performs corresponding processing and display based on the result.

[0042] The forecasting module is connected to the database and is used to provide an estimate of the project cost during the project planning stage. When making cost forecasts, a bottom-up estimation method is used to break down the project into smaller tasks or work packages, and a cost estimate is made for each task or work package. The costs of all tasks or work packages are aggregated to obtain a total cost estimate for the project.

[0043] The prediction module reads the sub-project engineering information stored in the database, divides the sub-project progress into stages, and makes cost predictions. The progress of each sub-project is divided into three stages, with the first stage being 0%-30%, the second stage being 30%-60%, and the third stage being 60%-100%. The equipment purchase cost, construction and installation engineering cost, design and survey cost, foundation construction cost, and project management cost of each sub-project are obtained to predict the cost required for the construction of each sub-project, denoted as Ci, and the total cost required for the predicted project construction is accumulated, denoted as Cs. The upper limit value of the cost consumption when the three stages of the construction period of each sub-project expire is set, and is denoted as C1max, C2max, and C3max respectively. The lower limit value of the cost consumption when the three stages of the construction period of each sub-project expire is set, and is denoted as C1min, C2min, and C3min respectively.

[0044] The information update module is used to determine the factors that affect the project construction cost. When predicting the project cost, the relevant construction data experience of similar projects in the past five years is retrieved to determine the variable factors that affect the project cost, such as materials, labor market prices, meteorological data and other variable factors, such as material market prices, labor market prices, material transportation market prices and loan interest rates during the project construction period, etc., and during the project construction process, the fluctuation information of each influencing factor is updated according to the factors affecting the project construction cost. The update frequency is set to regular updates, and an update cycle is set.

[0045] The correction module is used to correct the preliminary forecast of the construction costs of each sub-project during the project construction process. When correcting the cost, the forecast module re-estimates the cost based on the updated fluctuation information of variable factors affecting the project cost. After the cost is updated, the correction module synchronizes the re-estimated and corrected data to the database for storage. The parameter adjustment method is used during the correction to dynamically adjust the predicted construction costs of each sub-project.

[0046] The sub-project information update module is used to regularly update the progress of sub-projects. The staff enters the project information of multiple sub-projects into the database through the client. The sub-project information update module obtains the sub-project information stored in the database and updates the sub-project information in a timely manner. The entered sub-project information includes: the completion amount of each stage of the sub-project, the unfinished amount of each stage of the sub-project, and the sub-project consumption cost details.

[0047] The accounting module is connected to the sub-project information update module to obtain the consumption cost details of each sub-project at the end of the three-stage construction period, and calculate the actual consumption cost of each sub-project at the end of the three-stage construction period. When the progress of the sub-project reaches 30%, the actual consumption cost of the first stage of the sub-project is calculated, recorded as C1a. When the progress of the sub-project reaches 60%, the actual consumption cost of the second stage of the sub-project is calculated, recorded as C2a. When the progress of the sub-project reaches 100%, the actual consumption cost of the third stage of the sub-project is calculated, recorded as C3a.

[0048] The judgment module is connected to the accounting module to obtain the actual consumption cost of the sub-project at the end of the three-stage construction period, and compares and analyzes it with the revised predicted cost and performs cost control; when the first stage construction period expires, when C1a≤C1min, it means that the cost control of the first stage of the project is appropriate, when C1min<C1a<C1max, it means that the sub-project does not need to make cost control adjustments, when C1a=C1max, it means that there is a risk in cost control, obtain the actual consumption cost details of the sub-project, analyze the abnormal part of the cost exceeding the abnormal part, and strictly monitor this part of the cost in the second stage, when C1a>C1max, it means that there is a great risk in cost control, obtain the actual consumption cost details of the sub-project, analyze the abnormal part of the cost exceeding the abnormal part, and strictly monitor this part of the cost in the second stage, based on the fact that the actual consumption cost of the first stage of the sub-project exceeds the upper limit of the consumption cost at the end of the first stage construction period, the upper limit of the consumption cost C2max of the second stage construction period of the project is compressed, and the compressed value of the upper limit of the consumption cost C2max at the end of the second stage construction period = the actual consumption cost C1a- When the first stage of the construction period expires, the upper limit of the consumption cost C1max is reached; when the second stage of the construction period expires, when C2a≤C2min, it means that the cost control of the second stage of the sub-project is appropriate; when C2min<C2a<C2max, it means that there is no need to make cost control adjustments; when C2a=C2max, it means that there is a risk in the cost control of the sub-project, and the actual consumption cost details of the sub-project are obtained, and the abnormal part of the cost is analyzed and strictly monitored in the third stage. When C2a>C2max, it means that there is a great risk in the cost control of the sub-project, and the actual consumption cost details of the project are obtained, and the abnormal part of the cost is analyzed and strictly monitored in the third stage. Based on the part that the actual consumption cost of the second stage of the project exceeds the upper limit of the consumption cost at the expiration of the construction period, the upper limit of the consumption cost C3max of the second stage of the project at the expiration of the construction period is compressed, and the compressed value of the upper limit of the consumption cost C3max at the expiration of the third stage of the construction period = the actual consumption cost C2a of the second stage - the upper limit of the consumption cost C2max at the expiration of the second stage of the construction period; when the third stage of the construction period expires, the balance calculation is performed.

[0049] The surplus module is used to calculate the surplus rate when the sub-project progress reaches 100%, integrate and summarize the actual consumption costs of each sub-project in the three stages, obtain the total project consumption actual cost Ca, and calculate the project construction surplus rate. Surplus rate = (forecasted total cost Cs required for project construction - total project consumption actual cost Ca) / forecasted total cost Cs required for project construction * 100%.

[0050] This embodiment compares the actual consumption cost with the predicted cost in stages and performs cost control, adjusts the cost budget of each sub-project in stages, and strictly monitors the actual consumption cost of each sub-project in stages to ensure the surplus rate of the sub-project and the total project construction.

[0051] Embodiment 2

[0052] Reference Figure 2 This embodiment provides a method for predicting and controlling the cost of electric power engineering, comprising the following steps:

[0053] Step 1: Establish a general project framework according to the project plan, divide the general project into multiple sub-projects according to the general project framework, and establish multiple sub-project frameworks.

[0054] Step 2: Store the information of the overall project and each sub-project in the database in a structured manner. Different types of data are stored in different data tables, and the relationship between tables is defined to achieve data association and integration. When accessing the database, the user sends a database access request to the server through the client. After authenticating the identity through the authentication device, the server performs the corresponding operation based on the type and content of the request.

[0055] Step 3: Read the sub-project engineering information stored in the database, divide the progress of each sub-project into three stages, predict the three-stage costs of multiple sub-projects, and summarize and integrate the costs to obtain the total cost required for the predicted project construction, set the upper limit of the cost consumption when the three-stage construction period of each sub-project expires and the lower limit of the cost consumption when the construction period of each stage expires;

[0056] The progress of each sub-project is divided into three stages, with the first stage being 0%-30%, the second stage being 30%-60% and the third stage being 60%-100%. The equipment purchase cost, construction and installation engineering cost, design and survey cost, foundation construction cost and project management cost of each sub-project are obtained to predict the cost required for the construction of each sub-project, denoted as Ci, and the total cost required for the predicted project construction is accumulated, denoted as Cs. The upper limit of the cost consumption when the three stages of the construction period of each sub-project expires is set, and is denoted as C1max, C2max and C3max respectively. The lower limit of the cost consumption when the three stages of the construction period of each sub-project expires is set, and is denoted as C1min, C2min and C3min respectively.

[0057] Step 4: Determine the factors that affect the project construction cost, and regularly update the fluctuation information of each influencing factor based on the factors that affect the project construction cost during the project construction process.

[0058] Step 5: Regularly obtain updated information on factors that affect project construction costs, and re-estimate and forecast the costs through the forecasting module. After the costs are updated, the correction module will synchronize the re-estimated and corrected data to the database for storage.

[0059] Step 6: The staff enters the project information of multiple sub-projects into the database through the client, and the sub-project information update module regularly obtains the sub-project information stored in the database and updates the sub-project information in a timely manner.

[0060] Step 7: When the three phases of each sub-project are due, obtain the consumption cost details of the three phases of each sub-project when the three phases of the project are due, and calculate the actual consumption cost of the three phases of each sub-project when the three phases of the project are due;

[0061] When the progress of the sub-project reaches 30%, the actual consumption cost of the first phase of the sub-project is calculated and recorded as C1a. When the progress of the sub-project reaches 60%, the actual consumption cost of the second phase of the sub-project is calculated and recorded as C2a. When the progress of the sub-project reaches 100%, the actual consumption cost of the third phase of the sub-project is calculated and recorded as C3a.

[0062] Step 8: When the three phases of the sub-project are due, the actual consumption costs at the end of the three phases are obtained, compared with the predicted costs, and cost control is performed; the control method is the same as that in the first embodiment.

[0063] Step 9: When the progress of the sub-project reaches 100%, the surplus rate is calculated, and the actual consumption costs of the three stages of each sub-project are integrated and summarized to obtain the actual consumption cost Ca of the total project, and the surplus rate of the project construction is calculated;

[0064] Among them, the surplus rate = (the total cost required for the predicted project construction Cs minus the actual cost of the total project consumption Ca) / the total cost required for the predicted project construction Cs*100%.

[0065] Application Examples

[0066] The total project forecast construction cost of this example is 10 million yuan, and the project contains 5 sub-projects. The forecast cost allocated to one of the sub-projects is set to 3 million yuan. The balance control using the system and method of the above embodiment is specifically as follows:

[0067] Setting: Phase 1 (0%-30%): The upper limit of the cost consumption at the end of the construction period is 800,000 yuan; The lower limit of the cost consumption at the end of the construction period is 600,000 yuan;

[0068] The second stage (30%-60%): the upper limit of the cost consumption at the end of the construction period: 1.2 million yuan; the lower limit of the cost consumption at the end of the construction period: 1 million yuan;

[0069] The third stage (60%-100%): The upper limit of the cost consumption at the end of the construction period: 1 million yuan; the lower limit of the cost consumption at the end of the construction period: 900,000 yuan.

[0070] When the progress of the sub-project reaches 30%, the actual cost of the first phase is calculated to be RMB 1 million; when the progress of the sub-project reaches 60%, the actual cost of the second phase is calculated to be RMB 1.2 million; when the progress of the sub-project reaches 100%, the actual cost of the third phase is calculated to be RMB 750,000.

[0071] In the first stage, because 1 million yuan (actual consumption cost in the first stage) is greater than 800,000 yuan (the upper limit of consumption cost at the end of the first stage), the upper limit of consumption cost at the end of the second stage is compressed; compression value = 100-80 = 200,000 yuan, so the upper limit of consumption cost at the end of the new second stage becomes 120-20 = 1 million yuan;

[0072] In the second stage, since 1.2 million yuan (actual consumption cost of the second stage) is greater than 1 million yuan (the upper limit of consumption cost at the end of the second stage after adjustment), the upper limit of consumption cost at the end of the third stage needs to be compressed; compression value = 1.2 million yuan - 1 million yuan = 200,000 yuan, and the upper limit of consumption cost at the end of the third stage becomes 1 million yuan - 2 million yuan = 800,000 yuan;

[0073] When the third phase of construction is completed, the actual total cost of the sub-project = 100+120+750=2.95 million yuan; the allocated cost is 3 million yuan, and the surplus = 300-295=50,000 yuan, that is, the sub-project has a surplus of 50,000 yuan.

[0074] It can be seen that the present invention can effectively reduce project risks and ensure the project's surplus rate by adjusting the cost budget of each sub-project in stages, strictly monitoring the three-stage costs of each sub-project, and regulating the cost budget of the next stage according to the actual consumption cost.

[0075] The technical solutions of the present invention are not limited to the above-mentioned embodiments, and any technical solutions obtained by equivalent replacement methods fall within the scope of protection required by the present invention.

Claims

1. A power engineering project surplus control system, characterized in that: It includes a project establishment module, a database, a forecasting module, an information update module, a correction module, a sub-project information update module, an accounting module, a determination module and a balance module; The project establishment module is used to establish a general project framework according to the project plan, and divide the general project into multiple sub-project frameworks according to the general project framework; The database is used to store information of each sub-project; The prediction module is connected to the database, and is used to read the sub-project information, divide the progress of each sub-project into three stages, predict the cost of each sub-project in the three stages, and accumulate them to obtain the total predicted cost required for the project construction; The information updating module is used to determine the factors affecting the project construction cost and update the fluctuation information of each influencing factor during the project construction process; The correction module is used to correct the cost of each sub-project predicted by the prediction module based on the fluctuation information of each influencing factor during the project construction process; The sub-project information updating module is used to regularly update the progress of the sub-projects; The accounting module is connected to the sub-project information updating module to obtain the consumption cost details of each sub-project at the end of the three-stage construction period, and calculate the actual consumption cost of each sub-project at the end of the three-stage construction period; The determination module is connected to the accounting module to obtain the actual consumption cost of the sub-project at the end of the three phases of the construction period, and compare it with the revised predicted cost to perform cost control; The surplus module is used to calculate the surplus rate when the progress of the sub-project reaches 100%, integrate and summarize the actual consumption costs of each sub-project, obtain the total project consumption actual cost Ca, and calculate the project construction surplus rate, surplus rate = (predicted total cost Cs required for project construction - total project consumption actual cost Ca) / predicted total cost Cs required for project construction * 100%.

2. The power engineering project surplus control system according to claim 1, characterized in that: When constructing the sub-project framework, the project establishment module divides the overall project into multiple sub-projects according to the overall project framework, and establishes multiple sub-project frameworks according to the project construction plans, project construction progress promotion plans and the total predicted completion period of the sub-projects.

3. The power engineering cost forecasting and surplus control system and method according to claim 2 is characterized by: The forecasting module adopts a bottom-up estimation method when making cost forecasts, decomposing the project into multiple tasks or work packages, making cost estimates for each task or work package, and summarizing the costs of all tasks or work packages to obtain a total cost forecast for the project.

4. The power engineering project surplus control system according to claim 3 is characterized by: The prediction module reads the sub-project information stored in the database, divides the progress of the sub-project into stages, and performs cost prediction, dividing the progress of each sub-project into three stages, the first stage is 0%-30%, the second stage is 30%-60% and the third stage is 60%-100%, obtains the equipment purchase cost, construction and installation engineering cost, design and survey cost, foundation construction cost and project management cost of each sub-project, predicts the cost required for the construction of each sub-project, denoted as Ci, and accumulates the predicted total cost required for the construction of the project, denoted as Cs, sets the upper limit of the cost consumption when the three stages of the construction period of each sub-project expire, and denoted as C1max, C2max and C3max respectively, sets the lower limit of the cost consumption when the three stages of the construction period of each sub-project expire, and denoted as C1min, C2min and C3min respectively.

5. The power engineering project surplus control system according to claim 4, characterized in that: When the information update module updates the factors affecting the project construction cost, the update frequency is set to regular update, and the update cycle is set.

6. The power engineering project surplus control system according to claim 5, characterized in that: The correction module adopts a parameter adjustment method during correction, and dynamically adjusts the predicted costs of each sub-project through the prediction module based on updated fluctuation information of factors affecting project costs.

7. The power engineering project surplus control system according to claim 6, characterized in that: When the sub-project information updating module updates the progress of a sub-project, the project status of multiple sub-projects is entered into the database. The sub-project information updating module obtains the sub-project information stored in the database and updates the sub-project information in a timely manner. The entered sub-project information includes: the completion amount of each stage of the sub-project progress, the unfinished amount of each stage of the sub-project progress and the sub-project consumption cost details.

8. The power engineering project surplus control system according to claim 7, characterized in that: When calculating the cost, the accounting module calculates the actual consumption cost of the first stage of the subproject when the progress of the subproject reaches 30%, recorded as C1a; when the progress of the subproject reaches 60%, the actual consumption cost of the second stage of the subproject is calculated, recorded as C2a; when the progress of the subproject reaches 100%, the actual consumption cost of the third stage of the subproject is calculated, recorded as C3a.

9. The power engineering project surplus control system according to claim 8, characterized in that: When the first phase of the construction period expires, the judgment module compares the costs and performs cost control. When C1a≤C1min, it means that the cost control of the first phase of the project is appropriate. When C1min<C1a<C1max, it means that the sub-project does not need to make cost control adjustments. When C1a=C1max, it means that there is a risk in cost control. When C1a>C1max, based on the fact that the actual consumption cost of the first phase of the sub-project exceeds the upper limit of the consumption cost when the first phase of the construction period expires, the upper limit of the consumption cost C2max of the second phase of the construction period of the project is compressed. The compressed value of the upper limit of the consumption cost C2max when the second phase of the construction period expires = the actual consumption cost C1a of the first phase - the upper limit of the consumption cost C1max when the first phase of the construction period expires; the second phase of the construction period When the construction period expires, the judgment module compares the costs and performs cost control. When C2a≤C2min, it means that the cost control of the second stage of the sub-project is appropriate. When C2min<C2a<C2max, it means that there is no need to adjust the cost control. When C2a=C2max, it means that there is a risk in the cost control of the sub-project. When C2a>C2max, based on the fact that the actual consumption cost of the second stage of the project exceeds the upper limit of the consumption cost when the construction period expires, the upper limit of the consumption cost C3max of the second stage of the project when the construction period expires is compressed. The compressed value of the upper limit of the consumption cost C3max when the construction period of the third stage expires = the actual consumption cost C2a of the second stage - the upper limit of the consumption cost C2max when the construction period of the second stage expires. When the construction period of the third stage expires, the balance calculation is performed.

10. A method for controlling the balance of a power engineering project as claimed in claim 9, characterized in that: The following steps are involved: Step 1: Establish a general project framework according to the project plan, divide the general project into multiple sub-projects according to the general project framework, and establish multiple sub-project frameworks; Step 2: Store the information of each sub-project into the database; Step 3: Read the sub-project engineering information stored in the database, divide the progress of each sub-project into three stages, predict the three-stage costs of multiple sub-projects, and summarize and integrate the costs to obtain the total cost required for the predicted project engineering construction; Step 4: Determine the factors that affect the project construction cost, and regularly update the fluctuation information of each influencing factor according to the factors that affect the project construction cost during the project construction process; Step 5: Regularly obtain updated information on factors affecting project construction costs and re-forecast project costs; Step 6: Regularly update the progress of sub-projects; Step 7: When the three phases of each sub-project are due, obtain the consumption cost details of the three phases of each sub-project when the three phases are due, and calculate the actual consumption cost of the three phases of each sub-project when the three phases are due; Step 8: When the three phases of the sub-project are completed, the actual consumption costs at the end of the three phases are obtained, compared with the predicted costs, and cost control is performed; Step 9: When the progress of the sub-project reaches 100%, calculate the surplus rate, integrate and summarize the actual consumption costs of the three stages of each sub-project, obtain the actual consumption cost Ca of the total project, and calculate the surplus rate of the project construction.

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