Power transmission and transformation environment water conservation effect evaluation system based on distributed water balance model

Abstract

The invention discloses a power transmission and transformation environment water conservation effect evaluation system based on a distributed water balance model, and mainly relates to the technical field of power system environment protection. Comprising a data acquisition module used for acquiring environmental water conservation target data of a power transmission and transformation project; the water source conservation data calculation module is used for calculating and obtaining water source conservation data of the power transmission and transformation project according to the environmental water conservation target data on the basis of the constructed distributed water quantity balance model; and the environmental water conservation effect evaluation module is used for evaluating the environmental water conservation effect of the power transmission and transformation project according to the water source conservation data. The power transmission and transformation project environment water conservation effect evaluation method has the beneficial effects that the environment water conservation effect of the power transmission and transformation project is evaluated according to the acquired environment water conservation target data of the power transmission and transformation project through the constructed distributed water quantity balance model, and the quality and effect of environment water conservation effect evaluation of the power transmission and transformation project can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of power system environmental protection, and in particular to a power transmission and transformation environmental and water conservation effectiveness evaluation system based on a distributed water balance model. Background Art

[0002] With the continuous expansion of the power grid and the continuous updating of power transmission and transformation technology, power transmission and transformation projects have brought huge economic benefits, but have also had a profound impact on the natural ecological environment, especially the water resources environment. How to effectively implement environmental protection measures, especially water protection measures, in the construction of power transmission and transformation projects has become the focus of the power industry and even the entire society.

[0003] Transmission and transformation projects, including the construction of transmission lines and substations, usually involve large-scale land occupation, vegetation destruction, and terrain transformation. These activities directly or indirectly change the original hydrological cycle process. For example, the construction of transmission line towers often requires land leveling and foundation pit excavation. These activities will change the surface cover, affect the infiltration of rainwater and the path of surface runoff, and may lead to increased local flood risks or reduced water resources; the construction of substations is often accompanied by deep foundation pit excavation and groundwater extraction, which not only directly reduces groundwater resources, but also may destroy the natural balance of groundwater layers, causing groundwater levels to drop, affecting the ecological environment of surrounding areas and residents' domestic water use; if the construction waste, wastewater and oil pollution generated during the construction process are not properly handled, they may enter the water body through surface runoff or infiltration, causing water pollution, threatening the safety of aquatic organisms and human drinking water sources; in the face of the above-mentioned impacts of transmission and transformation projects on the hydrological environment, a series of water protection measures have been taken at home and abroad, but the existing measures still have many limitations in practical application, such as lack of systematic planning, single technical means, insufficient monitoring and evaluation, and low public participation.

[0004] Therefore, it is necessary to provide a power transmission and transformation environmental and water conservation effectiveness evaluation system based on a distributed water balance model. Summary of the invention

[0005] The purpose of the present invention is to provide a power transmission and transformation environmental and water conservation effectiveness evaluation system based on a distributed water balance model. It constructs a distributed water balance model and evaluates the environmental and water conservation effectiveness of the power transmission and transformation project according to the collected environmental and water conservation target data of the power transmission and transformation project, thereby improving the quality and effect of the environmental and water conservation effectiveness evaluation of the power transmission and transformation project.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] include:

[0008] Data acquisition module, used to collect environmental and water conservation target data of power transmission and transformation projects;

[0009] The water conservation data calculation module is used to calculate the water conservation data of the power transmission and transformation project based on the constructed distributed water balance model and the environmental and water conservation target data;

[0010] The environmental and water conservation effectiveness evaluation module is used to evaluate the environmental and water conservation effectiveness of power transmission and transformation projects based on water conservation data.

[0011] Preferably, the environmental and water conservation target data include:

[0012] Hydrometeorological data, soil data and vegetation data; hydrometeorological data include but are not limited to rainfall and evaporation; soil data include but are not limited to soil type, soil moisture, snowmelt, runoff, water content; vegetation data include but are not limited to vegetation coverage and vegetation type.

[0013] Preferably, the water conservation data calculation module includes a model building unit and a data calculation unit;

[0014] The model building unit is used to: build a distributed water balance model based on the INFIL3.0 model;

[0015] The data calculation unit is used to calculate and obtain water conservation data for the power transmission and transformation project based on a distributed water balance model and environmental and water conservation target data.

[0016] Preferably, based on the distributed water balance model and according to the environmental and water conservation target data, water conservation data for the power transmission and transformation project is calculated, including:

[0017] According to the environmental and water conservation target data, the net water infiltration, rainfall, snowmelt, runoff and root zone water storage in the soil layer are extracted;

[0018] Based on the distributed water balance model, the water balance in the soil layer is calculated with a daily step length; the water balance calculation formula is:

[0019]

[0020] Where d is time; i is the grid position in the distributed water balance model; is the net infiltration of water source at the i-th grid position; is the rainfall; is the amount of snowmelt; is the runoff entering grid i; is the runoff generated by grid i; is the change in root zone water storage; For evaporation volume;

[0021] According to the water balance, the temporal and spatial distribution change data of the net infiltration water in the soil layer is obtained;

[0022] Based on the temporal and spatial distribution change data, water conservation data of power transmission and transformation projects are obtained.

[0023] Preferably, the net infiltration of water source at the i-th grid position also includes, determined according to the drainage of each layer included in the i-th grid position, specifically:

[0024] Starting from the first layer, first determine whether the infiltration volume can saturate the first layer. If saturation is achieved, the infiltration volume from the first layer to the second layer is controlled by the infiltration capacity of the soil; if the first layer cannot be saturated, the infiltration volume from the jth layer to the j+1th layer is determined by the drainage volume from the jth layer to the j+1th layer, where 1≤j≤N, and N is the number of layers contained in the i-th grid position; the drainage volume calculation formula is:

[0025]

[0026] In the above formula, is the drainage volume from the jth layer to the j+1th layer at the i-th grid position; is the initial volumetric water content of the j-th soil layer at the i-th grid position; is the final volumetric water content of the jth soil layer at the i-th grid position; is the thickness of the j-th soil layer at the i-th grid position; 1000 is the unit conversion factor for soil layer thickness.

[0027] Preferably, the evaporation amount is obtained based on the following steps:

[0028] The potential evaporation capacity was calculated based on the Priestley-Taylor formula;

[0029] According to the environmental and water conservation target data, the soil moisture content and root density distribution data are extracted.

[0030] The actual evapotranspiration is calculated based on the soil moisture content and root density distribution data combined with the potential evapotranspiration.

[0031] Preferably, the environmental and water conservation effectiveness evaluation module includes an environmental and water conservation measures data acquisition unit and an environmental and water conservation effectiveness evaluation unit;

[0032] The water and soil conservation measures data acquisition unit is used to obtain water and soil conservation measures in the design, construction and operation of power transmission and transformation projects, and to extract water and soil conservation measures data based on the water and soil conservation measures; water and soil conservation measures include but are not limited to vegetation restoration, soil and water conservation and ecosystem health maintenance; water and soil conservation measures data are comprehensive impact data of water and soil conservation measures on soil water content;

[0033] The environmental and water conservation effectiveness evaluation unit is used to evaluate the environmental and water conservation effectiveness of power transmission and transformation projects based on comprehensive impact data and combined with water conservation data.

[0034] Preferably, the environmental and water conservation effects of the power transmission and transformation project are evaluated based on the comprehensive impact data and combined with the water conservation data, including:

[0035] According to the comprehensive impact data, the evaluation indicators of several environmental and water conservation projects are extracted and the parameter values ​​and weight values ​​of the evaluation indicators are set;

[0036] According to the parameter value and the weight value of the evaluation index, the parameter value of the evaluation index and the weight value of the evaluation index are multiplied and added together to calculate the total contribution value of the environmental and water conservation project to environmental and water conservation;

[0037] According to water conservation data, set the effectiveness value of environmental and water conservation measures;

[0038] According to the difference between the total contribution value and the effectiveness value, the basic value of environmental and water conservation effectiveness evaluation is set;

[0039] Based on the basic value of environmental and water conservation effectiveness evaluation and combined with the total contribution value of environmental and water conservation projects to environmental and water conservation, the environmental and water conservation effectiveness of power transmission and transformation projects is evaluated.

[0040] Preferably, the environmental and water conservation effectiveness of the power transmission and transformation project is evaluated based on the basic value of environmental and water conservation effectiveness evaluation and the total contribution value of environmental and water conservation projects to environmental and water conservation, including:

[0041] Set the importance and implementation level of environmental and water conservation projects;

[0042] According to the importance and implementation level of environmental and water conservation projects, set the contribution ratio of environmental and water conservation projects to environmental and water conservation measures;

[0043] According to the contribution ratio and the total contribution value of the environmental and water conservation project to environmental and water conservation, the independent impact value of the environmental and water conservation project is calculated;

[0044] Based on the independent impact value and the basic value of environmental and water conservation effectiveness evaluation, the environmental and water conservation effectiveness evaluation values ​​of several environmental and water conservation projects are calculated.

[0045] Preferably, it also includes an environmental and water conservation effectiveness tracking module, which is used to track the stability and sustainability of environmental and water conservation projects in environmental and water conservation measures based on the environmental and water conservation effectiveness evaluation records of power transmission and transformation, and to evaluate the effectiveness of environmental and water conservation projects; specifically:

[0046] Obtain the environmental and water conservation effectiveness evaluation records of power transmission and transformation, and extract the historical contribution value data of environmental and water conservation projects in the environmental and water conservation effectiveness evaluation records of power transmission and transformation;

[0047] According to the historical contribution value data, using the set neural network prediction model, the contribution of the environmental and water conservation project in several set periods is predicted to obtain the first prediction data, and according to the magnitude of the change in the first prediction data, the stability of the environmental and water conservation project to the environmental and water conservation measures is tracked;

[0048] According to the historical contribution value data, the contribution of the environmental and water conservation project in several set periods is predicted using the set long-short term memory network model to obtain the second prediction data. According to the trend changes of the second prediction data, the sustainability of the environmental and water conservation project to the environmental and water conservation measures is tracked;

[0049] It also includes, based on the constructed regression model, combining historical precipitation and evapotranspiration data, calculating the impact coefficient that affects the investment in environmental and water conservation projects, and adjusting the investment in environmental and water conservation projects in a timely manner according to the impact coefficient and the precipitation and evapotranspiration obtained from actual monitoring to achieve the optimal investment; specifically:

[0050] Construct a regression model, specifically, first obtain the input value set of each environmental and water conservation project, the impact value set of precipitation on environmental and water conservation projects, and the impact value set of evapotranspiration on environmental and water conservation projects;

[0051] The input value set is: P = {p1, p2, p3...pn};

[0052] The set of impact values ​​of precipitation on environmental and water conservation projects is: A = {A1, A2, A3…An};

[0053] The impact value set of evaporation on environmental and water conservation projects is: B = {B1, B2, B3…Bn};

[0054] The set of regression coefficient combinations G is calculated based on the following formula 1;

[0055] G=(H T H) -1 H T P

[0056] in,

[0057]

[0058] The regression coefficient combination G includes parameters G1, G2 and G0;

[0059] According to the set of regression coefficient combinations G, the optimal parameter combinations G11, G21 and G01 are obtained;

[0060] Monitor and obtain actual precipitation and actual evapotranspiration;

[0061] According to the optimal parameter combination G11, G21 and G01, as well as the actual precipitation and actual evapotranspiration, the actual optimal investment value P1 of the environmental and water conservation project is calculated using Formula 1;

[0062] Obtain the initial investment of the environmental and water conservation project, use the set long short-term memory network model to predict the subsequent investment of multiple set periods, and obtain multiple subsequent investment prediction values;

[0063] If the cumulative value of the subsequent investment forecast value reaches the actual optimal investment value P1, the subsequent additional investment value of the environmental and water conservation project is calculated to obtain the calculated value. If the calculated value is greater than the set calculation threshold, the effectiveness of the environmental and water conservation project is evaluated based on the test value.

[0064] Compared with the prior art, the beneficial effects of the present invention are:

[0065] By constructing a distributed water balance model, the environmental and water conservation effectiveness of the power transmission and transformation projects can be evaluated based on the collected environmental and water conservation target data of the power transmission and transformation projects, which can improve the quality and effect of the environmental and water conservation effectiveness evaluation of the power transmission and transformation projects.

[0066] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0067] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 It is a schematic diagram of the structure of the power transmission and transformation environmental water conservation effectiveness evaluation system based on the distributed water balance model of the present invention;

[0069] Figure 2 It is a schematic diagram of the structure of the water conservation data calculation module of the present invention;

[0070] Figure 3 It is a schematic diagram of the structure of the environmental and water conservation effectiveness evaluation module of the present invention;

[0071] Figure 4 It is a schematic diagram of the steps for evaluating the environmental and water conservation effectiveness of power transmission and transformation projects according to the present invention. DETAILED DESCRIPTION

[0072] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0073] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and should not be understood as limitations on the present invention.

[0074] In the present invention, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. Relevant scientific research or technical personnel in this field can determine the specific meanings of the above terms in the present invention according to specific circumstances, and they should not be understood as limiting the present invention.

[0075] Example:

[0076] The present invention provides a system for evaluating the effectiveness of power transmission and transformation environmental water conservation based on a distributed water balance model. Figure 1 As shown, including:

[0077] Data acquisition module, used to collect environmental and water conservation target data of power transmission and transformation projects;

[0078] The water conservation data calculation module is used to calculate the water conservation data of the power transmission and transformation project based on the constructed distributed water balance model and the environmental and water conservation target data;

[0079] The environmental and water conservation effectiveness evaluation module is used to evaluate the environmental and water conservation effectiveness of power transmission and transformation projects based on water conservation data.

[0080] The working principle of the above technical scheme is: in order to realize the power transmission and transformation environmental and water conservation effectiveness evaluation system based on the distributed water balance model, the present invention proposes a data acquisition module for collecting the environmental and water conservation target data of the power transmission and transformation project; proposes a water source conservation data calculation module for calculating the water source conservation data of the power transmission and transformation project based on the constructed distributed water balance model and the environmental and water conservation target data; proposes an environmental and water conservation effectiveness evaluation module for evaluating the environmental and water conservation effectiveness of the power transmission and transformation project based on the water source conservation data.

[0081] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, through the constructed distributed water balance model, the environmental and water conservation effectiveness of the power transmission and transformation project is evaluated according to the collected environmental and water conservation target data of the power transmission and transformation project, thereby improving the quality and effect of the environmental and water conservation effectiveness evaluation of the power transmission and transformation project.

[0082] In this embodiment, the environmental and water conservation target data include:

[0083] Hydrometeorological data, soil data and vegetation data; hydrometeorological data include but are not limited to rainfall and evaporation; soil data include but are not limited to soil type, soil moisture, snowmelt, runoff, water content; vegetation data include but are not limited to vegetation coverage and vegetation type.

[0084] The working principle of the above technical solution is: the environmental and water conservation target data of the present invention includes hydrological and meteorological data, soil data and vegetation data; the hydrological and meteorological data include but are not limited to rainfall and evaporation; the soil data include but are not limited to soil type, soil moisture, snowmelt, runoff, and water content; the vegetation data include but are not limited to vegetation coverage and vegetation type.

[0085] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, the collection of hydrological and meteorological data, soil data and vegetation data provides a basis for subsequent calculation and analysis.

[0086] In this embodiment, if Figure 2 As shown, the water conservation data calculation module includes a model building unit and a data calculation unit;

[0087] Model building unit, used to build a distributed water balance model based on the INFIL3.0 model;

[0088] The data calculation unit is used to calculate the water conservation data of the power transmission and transformation project based on the distributed water balance model and the environmental and water conservation target data.

[0089] The working principle of the above technical solution is: in order to realize the function of the water conservation data calculation module, the present invention proposes a model construction unit and a data calculation unit; using the model construction unit, based on the INFIL3.0 model, a distributed water balance model is constructed; using the data calculation unit, based on the distributed water balance model, according to the environmental and water conservation target data, the water conservation data of the power transmission and transformation project is calculated.

[0090] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, accurate water conservation data for power transmission and transformation projects can be obtained through a distributed water balance model based on environmental and water conservation target data.

[0091] In this embodiment, based on the distributed water balance model and according to the environmental and water conservation target data, water conservation data of the power transmission and transformation project is calculated, including:

[0092] According to the environmental and water conservation target data, the net water infiltration, rainfall, snowmelt, runoff and root zone water storage in the soil layer are extracted;

[0093] Based on the distributed water balance model, the water balance in the soil layer is calculated with a daily step length; the water balance calculation formula is:

[0094]

[0095] Where d is time; i is the grid position in the distributed water balance model; is the net infiltration of water source at the i-th grid position; is the rainfall; is the amount of snowmelt; is the runoff entering grid i; is the runoff generated by grid i; is the change in root zone water storage; For evaporation volume;

[0096] According to the water balance, the temporal and spatial distribution change data of the net infiltration water in the soil layer is obtained;

[0097] Based on the temporal and spatial distribution change data, water conservation data of power transmission and transformation projects are obtained.

[0098] The working principle of the above technical solution is: in order to realize the calculation and acquisition of water conservation data of power transmission and transformation projects based on the distributed water balance model and the environmental and water conservation target data, the present invention first extracts the net water infiltration, rainfall, snowmelt, runoff and root zone water storage in the soil layer according to the environmental and water conservation target data; then, based on the distributed water balance model, the water balance in the soil layer is calculated with a day as a step; then, according to the water balance, the spatiotemporal distribution change data of the net infiltration water in the soil layer is obtained; finally, based on the spatiotemporal distribution change data, the water conservation data of the power transmission and transformation projects is obtained.

[0099] The beneficial effects of the above technical solution are: by adopting the solution provided by this embodiment, based on the distributed water balance model, accurate water conservation data of the power transmission and transformation project can be calculated.

[0100] In this embodiment, the net infiltration of water source at the i-th grid position is also determined according to the drainage of each layer included in the i-th grid position, specifically:

[0101] Starting from the first layer, first determine whether the infiltration volume can saturate the first layer. If saturation is achieved, the infiltration volume from the first layer to the second layer is controlled by the infiltration capacity of the soil; if the first layer cannot be saturated, the infiltration volume from the jth layer to the j+1th layer is determined by the drainage volume from the jth layer to the j+1th layer, where 1≤j≤N, and N is the number of layers contained in the i-th grid position; the drainage volume calculation formula is:

[0102]

[0103] In the above formula, is the drainage volume from the jth layer to the j+1th layer at the i-th grid position; is the initial volumetric water content of the j-th soil layer at the i-th grid position; is the final volumetric water content of the jth soil layer at the i-th grid position; is the thickness of the j-th soil layer at the i-th grid position; 1000 is the unit conversion factor for soil layer thickness.

[0104] The working principle of the above technical solution is: the net infiltration of water source at the i-th grid position of the present invention also includes, based on the drainage of each layer contained in the i-th grid position, starting from the first layer, first determine whether the infiltration can saturate the first layer, if saturation is reached, the infiltration water volume from the first layer to the second layer is controlled by the infiltration capacity of the soil; if the first layer cannot be saturated, the infiltration volume from the j-th layer to the j+1-th layer is determined by the drainage from the j-th layer to the j+1-th layer.

[0105] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, the accuracy of the net infiltration of water sources can be guaranteed by determining the net infiltration of water sources using different determination methods.

[0106] In this embodiment, the evaporation amount is obtained based on the following steps:

[0107] The potential evaporation capacity is calculated based on the Priestley-Taylor formula;

[0108] According to the environmental and water conservation target data, the soil moisture content and root density distribution data are extracted.

[0109] The actual evapotranspiration is calculated based on the soil moisture content and root density distribution data combined with the potential evapotranspiration.

[0110] The working principle of the above technical solution is: in order to obtain the evapotranspiration, the present invention first calculates the potential evapotranspiration based on the Priestley-Taylor formula; according to the environmental and water conservation target data, the soil moisture content and root density distribution data are extracted, and according to the soil moisture content and root density distribution data, combined with the potential evapotranspiration, the actual evapotranspiration is calculated.

[0111] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, by calculating the potential evaporation, a basis is provided for the accurate calculation of the actual evaporation.

[0112] In this embodiment, if Figure 3 As shown, the environmental and water conservation effectiveness evaluation module includes an environmental and water conservation measures data acquisition unit and an environmental and water conservation effectiveness evaluation unit;

[0113] The water and soil conservation measures data acquisition unit is used to obtain water and soil conservation measures in the design, construction and operation of power transmission and transformation projects, and to extract water and soil conservation measures data based on the water and soil conservation measures; water and soil conservation measures include but are not limited to vegetation restoration, soil and water conservation and ecosystem health maintenance; water and soil conservation measures data are comprehensive impact data of water and soil conservation measures on soil water content;

[0114] The environmental and water conservation effectiveness evaluation unit is used to evaluate the environmental and water conservation effectiveness of power transmission and transformation projects based on comprehensive impact data and combined with water conservation data.

[0115] The working principle of the above technical solution is: in order to realize the function of the environmental and water conservation effectiveness evaluation module, the present invention proposes an environmental and water conservation measures data acquisition unit, which is used to obtain environmental and water conservation measures in the design, construction and operation of power transmission and transformation projects, and extract environmental and water conservation measures data based on the environmental and water conservation measures; environmental and water conservation measures include but are not limited to vegetation restoration, soil and water conservation and ecosystem health maintenance; environmental and water conservation measures data are comprehensive impact data of environmental and water conservation measures on soil water content; an environmental and water conservation effectiveness evaluation unit is proposed, which is used to evaluate the environmental and water conservation effectiveness of power transmission and transformation projects based on the comprehensive impact data and combined with water conservation data.

[0116] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, data on environmental and water conservation measures can be obtained, which can provide a basis for subsequent environmental and water conservation effectiveness evaluation.

[0117] In this embodiment, if Figure 4 As shown in the figure, based on the comprehensive impact data and combined with the water conservation data, the environmental and water conservation effects of the power transmission and transformation project are evaluated, including:

[0118] According to the comprehensive impact data, the evaluation indicators of several environmental and water conservation projects are extracted and the parameter values ​​and weight values ​​of the evaluation indicators are set;

[0119] According to the parameter value and the weight value of the evaluation index, the parameter value of the evaluation index and the weight value of the evaluation index are multiplied and added together to calculate the total contribution value of the environmental and water conservation project to environmental and water conservation;

[0120] According to water conservation data, set the effectiveness value of environmental and water conservation measures;

[0121] According to the difference between the total contribution value and the effectiveness value, the basic value of environmental and water conservation effectiveness evaluation is set;

[0122] Based on the basic value of environmental and water conservation effectiveness evaluation and combined with the total contribution value of environmental and water conservation projects to environmental and water conservation, the environmental and water conservation effectiveness of power transmission and transformation projects is evaluated.

[0123] The working principle of the above technical scheme is: in order to evaluate the environmental and water conservation effectiveness of power transmission and transformation projects based on comprehensive impact data combined with water conservation data, the present invention extracts evaluation indicators of several environmental and water conservation projects based on the comprehensive impact data, and sets the parameter values ​​of the evaluation indicators and the weight values ​​of the evaluation indicators; then, according to the parameter values ​​and the weight values ​​of the evaluation indicators, the parameter values ​​of the evaluation indicators and the weight values ​​of the evaluation indicators are multiplied and added to calculate the total contribution value of the environmental and water conservation projects to environmental and water conservation; according to the water conservation data, the effectiveness value of the environmental and water conservation measures is set; according to the difference between the total contribution value and the effectiveness value, the basic value for environmental and water conservation effectiveness evaluation is set; finally, according to the basic value for environmental and water conservation effectiveness evaluation, combined with the total contribution value of the environmental and water conservation projects to environmental and water conservation, the environmental and water conservation effectiveness of the power transmission and transformation projects is evaluated.

[0124] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, the environmental and water conservation effectiveness of the transmission and transformation project is evaluated based on the comprehensive impact data combined with the water conservation data, thereby ensuring the effect of the environmental and water conservation effectiveness evaluation.

[0125] In this embodiment, the environmental and water conservation effectiveness of the power transmission and transformation project is evaluated based on the basic value of environmental and water conservation effectiveness evaluation and the total contribution value of environmental and water conservation projects to environmental and water conservation, including:

[0126] Set the importance and implementation level of environmental and water conservation projects;

[0127] According to the importance and implementation level of environmental and water conservation projects, set the contribution ratio of environmental and water conservation projects to environmental and water conservation measures;

[0128] According to the contribution ratio and the total contribution value of the environmental and water conservation project to environmental and water conservation, the independent impact value of the environmental and water conservation project is calculated;

[0129] Based on the independent impact value and the basic value of environmental and water conservation effectiveness evaluation, the environmental and water conservation effectiveness evaluation values ​​of several environmental and water conservation projects are calculated.

[0130] The working principle of the above technical scheme is: in order to evaluate the environmental and water conservation effectiveness of power transmission and transformation projects according to the basic value of environmental and water conservation effectiveness evaluation and the total contribution value of environmental and water conservation projects to environmental and water conservation, the present invention first sets the importance and implementation level of the environmental and water conservation projects; then, according to the importance and implementation level of the environmental and water conservation projects, sets the contribution ratio of the environmental and water conservation projects in the environmental and water conservation measures; then, according to the contribution ratio and the total contribution value of the conservation projects to environmental and water conservation, calculates the independent impact value of the environmental and water conservation projects; finally, according to the independent impact value and the basic value of environmental and water conservation effectiveness evaluation, calculates the environmental and water conservation effectiveness evaluation values ​​of several environmental and water conservation projects.

[0131] The beneficial effect of the above technical scheme is: by adopting the scheme provided in this embodiment, the environmental and water conservation effectiveness of the transmission and transformation project is evaluated based on the basic value of the environmental and water conservation effectiveness evaluation combined with the total contribution value of the environmental and water conservation projects to environmental and water conservation, thereby ensuring the quality of the environmental and water conservation effectiveness evaluation.

[0132] In this embodiment, an environmental and water conservation effectiveness tracking module is also included, which is used to track the stability and sustainability of environmental and water conservation projects in environmental and water conservation measures according to the environmental and water conservation effectiveness evaluation records of power transmission and transformation, and to evaluate the effectiveness of environmental and water conservation projects; specifically:

[0133] Obtain the environmental and water conservation effectiveness evaluation records of power transmission and transformation, and extract the historical contribution value data of environmental and water conservation projects in the environmental and water conservation effectiveness evaluation records of power transmission and transformation;

[0134] According to the historical contribution value data, using the set neural network prediction model, the contribution of the environmental and water conservation project in several set periods is predicted to obtain the first prediction data, and according to the change range of the first prediction data, the stability of the environmental and water conservation project to the environmental and water conservation measures is tracked;

[0135] According to the historical contribution value data, the contribution of the environmental and water conservation project in several set periods is predicted using the set long-short term memory network model to obtain the second prediction data. According to the trend changes of the second prediction data, the sustainability of the environmental and water conservation project to the environmental and water conservation measures is tracked;

[0136] It also includes, based on the constructed regression model, combining historical precipitation and evapotranspiration data, calculating the impact coefficient that affects the investment in environmental and water conservation projects, and adjusting the investment in environmental and water conservation projects in a timely manner according to the impact coefficient and the precipitation and evapotranspiration obtained from actual monitoring to achieve the optimal investment; specifically:

[0137] Construct a regression model, specifically, first obtain the input value set of each environmental and water conservation project, the impact value set of precipitation on environmental and water conservation projects, and the impact value set of evapotranspiration on environmental and water conservation projects;

[0138] The input value set is: P = {p1, p2, p3...pn};

[0139] The set of impact values ​​of precipitation on environmental and water conservation projects is: A = {A1, A2, A3…An};

[0140] The impact value set of evaporation on environmental and water conservation projects is: B = {B1, B2, B3…Bn};

[0141] The set of regression coefficient combinations G is calculated based on the following formula 1;

[0142] G=(H T H) -1 H T P

[0143] in,

[0144]

[0145] The regression coefficient combination G includes parameters G1, G2 and G0;

[0146] According to the set of regression coefficient combinations G, the optimal parameter combinations G11, G21 and G01 are obtained;

[0147] Monitor and obtain actual precipitation and actual evapotranspiration;

[0148] According to the optimal parameter combination G11, G21 and G01, as well as the actual precipitation and actual evapotranspiration, the actual optimal investment value P1 of the environmental and water conservation project is calculated using Formula 1;

[0149] Obtain the initial investment of the environmental and water conservation project, use the set long short-term memory network model to predict the subsequent investment of multiple set periods, and obtain multiple subsequent investment prediction values;

[0150] If the cumulative value of the subsequent investment forecast value reaches the actual optimal investment value P1, the subsequent additional investment value of the environmental and water conservation project is calculated to obtain the calculated value. If the calculated value is greater than the set calculation threshold, the effectiveness of the environmental and water conservation project is evaluated based on the test value.

[0151] The working principle of the above technical solution is: in order to continuously track the effect of environmental water conservation, the present invention also includes an environmental water conservation effectiveness tracking module, which is used to track the stability and sustainability of environmental water conservation projects in environmental water conservation measures according to the environmental water conservation effectiveness evaluation record of power transmission and transformation, and evaluate the effectiveness of environmental water conservation projects. First, the environmental water conservation effectiveness evaluation record of power transmission and transformation is obtained, and the historical contribution value data of the environmental water conservation projects in the environmental water conservation effectiveness evaluation record of power transmission and transformation is extracted; then, according to the historical contribution value data, the contribution of the environmental water conservation project in several set periods is predicted by using the set neural network prediction model to obtain the first prediction data, and according to the change range of the first prediction data, the stability of the environmental water conservation project to the environmental water conservation measures is tracked; finally, according to the historical contribution value data, the contribution of the environmental water conservation project in several set periods is predicted by using the set long short-term memory network model to obtain the second prediction data, and according to the trend change of the second prediction data, the sustainability of the environmental water conservation project to the environmental water conservation measures is tracked;

[0152] It also includes, based on the constructed regression model, combining historical precipitation and evapotranspiration data, calculating the impact coefficient that affects the investment in environmental and water conservation projects, and adjusting the investment in environmental and water conservation projects in a timely manner according to the impact coefficient and the precipitation and evapotranspiration obtained from actual monitoring to achieve the optimal investment; specifically:

[0153] Construct a regression model, specifically, first obtain the input value set of each environmental and water conservation project, the impact value set of precipitation on environmental and water conservation projects, and the impact value set of evapotranspiration on environmental and water conservation projects;

[0154] The input value set is: P = {p1, p2, p3...pn};

[0155] The set of impact values ​​of precipitation on environmental and water conservation projects is: A = {A1, A2, A3…An};

[0156] The impact value set of evaporation on environmental and water conservation projects is: B = {B1, B2, B3…Bn};

[0157] The set of regression coefficient combinations G is calculated based on the following formula 1;

[0158] G=(H T H) -1 H T P

[0159] in,

[0160]

[0161] The regression coefficient combination G includes parameters G1, G2 and G0;

[0162] According to the set of regression coefficient combinations G, the optimal parameter combinations G11, G21 and G01 are obtained;

[0163] Monitor and obtain actual precipitation and actual evapotranspiration;

[0164] According to the optimal parameter combination G11, G21 and G01, as well as the actual precipitation and actual evapotranspiration, the actual optimal investment value P1 of the environmental and water conservation project is calculated using Formula 1;

[0165] Obtain the initial investment of the environmental and water conservation project, use the set long short-term memory network model to predict the subsequent investment of multiple set periods, and obtain multiple subsequent investment prediction values;

[0166] If the cumulative value of the subsequent investment forecast value reaches the actual optimal investment value P1, the subsequent additional investment value of the environmental and water conservation project is calculated to obtain the calculated value. If the calculated value is greater than the set calculation threshold, the effectiveness of the environmental and water conservation project is evaluated based on the test value.

[0167] The beneficial effects of the above technical scheme are: by adopting the scheme provided in this embodiment, through continuous tracking of the environmental and water conservation effects, the stability and sustainability of environmental and water conservation measures can be observed, so as to better take effective improvement measures; by establishing a regression model and calculating the actual optimal investment value of the environmental and water conservation project, as well as measuring the subsequent additional investment value of the environmental and water conservation project, the effectiveness of the environmental and water conservation project can be evaluated based on the measured value.

[0168] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. The power transmission and transformation environmental water conservation effectiveness evaluation system based on the distributed water balance model is characterized by: include: Data acquisition module, used to collect environmental and water conservation target data of power transmission and transformation projects; The water conservation data calculation module is used to calculate the water conservation data of the power transmission and transformation project based on the constructed distributed water balance model and the environmental and water conservation target data; The environmental and water conservation effectiveness evaluation module is used to evaluate the environmental and water conservation effectiveness of power transmission and transformation projects based on water conservation data.

2. According to the distributed water balance model-based power transmission and transformation environmental water conservation effectiveness evaluation system of claim 1, it is characterized by: The environmental and water conservation target data include: Hydrometeorological data, soil data and vegetation data; hydrometeorological data include but are not limited to rainfall and evaporation; soil data include but are not limited to soil type, soil moisture, snowmelt, runoff, water content; vegetation data include but are not limited to vegetation coverage and vegetation type.

3. According to claim 1, the power transmission and transformation environmental water conservation effectiveness evaluation system based on the distributed water balance model is characterized in that: The water conservation data calculation module includes a model building unit and a data calculation unit; The model building unit is used to: build a distributed water balance model based on the INFIL3.0 model; The data calculation unit is used to calculate and obtain water conservation data for the power transmission and transformation project based on a distributed water balance model and environmental and water conservation target data.

4. The power transmission and transformation environmental and water conservation effectiveness evaluation system based on the distributed water balance model according to claim 3 is characterized in that: Based on the distributed water balance model and environmental and water conservation target data, water conservation data for power transmission and transformation projects are calculated, including: According to the environmental and water conservation target data, the net water infiltration, rainfall, snowmelt, runoff and root zone water storage in the soil layer are extracted; Based on the distributed water balance model, the water balance in the soil layer is calculated with a daily step length; the water balance calculation formula is: Where d is time; i is the grid position in the distributed water balance model; is the net infiltration of water source at the i-th grid position; is the rainfall; is the amount of snowmelt; is the runoff entering grid i; is the runoff generated by grid i; is the change in root zone water storage; For evaporation volume; According to the water balance, the temporal and spatial distribution change data of the net infiltration water in the soil layer is obtained; Based on the temporal and spatial distribution change data, water conservation data of power transmission and transformation projects are obtained.

5. The power transmission and transformation environmental and water conservation effectiveness evaluation system based on the distributed water balance model according to claim 4 is characterized in that: The net infiltration of water source at the i-th grid position also includes, determined according to the drainage of each layer contained in the i-th grid position, specifically: Starting from the first layer, first determine whether the infiltration volume can saturate the first layer. If saturation is achieved, the infiltration volume from the first layer to the second layer is controlled by the infiltration capacity of the soil; if the first layer cannot be saturated, the infiltration volume from the jth layer to the j+1th layer is determined by the drainage volume from the jth layer to the j+1th layer, where 1≤j≤N, and N is the number of layers contained in the i-th grid position; the drainage volume calculation formula is: In the above formula, is the drainage volume from the jth layer to the j+1th layer at the i-th grid position; is the initial volumetric water content of the j-th soil layer at the i-th grid position; is the final volumetric water content of the jth soil layer at the i-th grid position; is the thickness of the j-th soil layer at the i-th grid position; 1000 is the unit conversion factor for soil layer thickness.

6. The power transmission and transformation environmental and water conservation effectiveness evaluation system based on the distributed water balance model according to claim 4 is characterized in that: The evaporation volume is obtained based on the following steps: The potential evaporation capacity was calculated based on the Priestley-Taylor formula; According to the environmental and water conservation target data, the soil moisture content and root density distribution data are extracted. The actual evapotranspiration is calculated based on the soil moisture content and root density distribution data combined with the potential evapotranspiration.

7. The power transmission and transformation environmental water conservation effectiveness evaluation system based on the distributed water balance model according to claim 1 is characterized in that: The environmental and water conservation effectiveness evaluation module includes an environmental and water conservation measures data acquisition unit and an environmental and water conservation effectiveness evaluation unit; The water and soil conservation measures data acquisition unit is used to obtain water and soil conservation measures in the design, construction and operation of power transmission and transformation projects, and to extract water and soil conservation measures data based on the water and soil conservation measures; water and soil conservation measures include but are not limited to vegetation restoration, soil and water conservation and ecosystem health maintenance; water and soil conservation measures data are comprehensive impact data of water and soil conservation measures on soil water content; The environmental and water conservation effectiveness evaluation unit is used to evaluate the environmental and water conservation effectiveness of power transmission and transformation projects based on comprehensive impact data and combined with water conservation data.

8. The power transmission and transformation environmental and water conservation effectiveness evaluation system based on the distributed water balance model according to claim 7 is characterized in that: Based on the comprehensive impact data and combined with water conservation data, the environmental and water conservation effects of the power transmission and transformation project are evaluated, including: According to the comprehensive impact data, the evaluation indicators of several environmental and water conservation projects are extracted and the parameter values ​​and weight values ​​of the evaluation indicators are set; According to the parameter value and the weight value of the evaluation index, the parameter value of the evaluation index and the weight value of the evaluation index are multiplied and added together to calculate the total contribution value of the environmental and water conservation project to environmental and water conservation; According to water conservation data, set the effectiveness value of environmental and water conservation measures; According to the difference between the total contribution value and the effectiveness value, the basic value of environmental and water conservation effectiveness evaluation is set; Based on the basic value of environmental and water conservation effectiveness evaluation and combined with the total contribution value of environmental and water conservation projects to environmental and water conservation, the environmental and water conservation effectiveness of power transmission and transformation projects is evaluated.

9. The power transmission and transformation environmental and water conservation effectiveness evaluation system based on the distributed water balance model according to claim 8 is characterized in that: Based on the basic value of environmental and water conservation effectiveness evaluation and combined with the total contribution of environmental and water conservation projects to environmental and water conservation, the environmental and water conservation effectiveness of power transmission and transformation projects is evaluated, including: Set the importance and implementation level of environmental and water conservation projects; According to the importance and implementation level of environmental and water conservation projects, set the contribution ratio of environmental and water conservation projects to environmental and water conservation measures; According to the contribution ratio and the total contribution value of the environmental and water conservation project to environmental and water conservation, the independent impact value of the environmental and water conservation project is calculated; Based on the independent impact value and the basic value of environmental and water conservation effectiveness evaluation, the environmental and water conservation effectiveness evaluation values ​​of several environmental and water conservation projects are calculated.

10. The power transmission and transformation environmental and water conservation effectiveness evaluation system based on the distributed water balance model according to claim 1 is characterized in that: It also includes an environmental and water conservation effectiveness tracking module, which is used to track the stability and sustainability of environmental and water conservation projects in environmental and water conservation measures based on the environmental and water conservation effectiveness evaluation records of power transmission and transformation, and to evaluate the effectiveness of environmental and water conservation projects; specifically: Obtain the environmental and water conservation effectiveness evaluation records of power transmission and transformation, and extract the historical contribution value data of environmental and water conservation projects in the environmental and water conservation effectiveness evaluation records of power transmission and transformation; According to the historical contribution value data, using the set neural network prediction model, the contribution of the environmental and water conservation project in several set periods is predicted to obtain the first prediction data, and according to the change range of the first prediction data, the stability of the environmental and water conservation project to the environmental and water conservation measures is tracked; According to the historical contribution value data, the contribution of the environmental and water conservation project in several set periods is predicted using the set long-short term memory network model to obtain the second prediction data. According to the trend changes of the second prediction data, the sustainability of the environmental and water conservation project to the environmental and water conservation measures is tracked; It also includes, based on the constructed regression model, combining historical precipitation and evapotranspiration data, calculating the impact coefficient that affects the investment in environmental and water conservation projects, and adjusting the investment in environmental and water conservation projects in a timely manner according to the impact coefficient and the precipitation and evapotranspiration obtained from actual monitoring to achieve the optimal investment; specifically: Construct a regression model, specifically, first obtain the input value set of each environmental and water conservation project, the impact value set of precipitation on environmental and water conservation projects, and the impact value set of evapotranspiration on environmental and water conservation projects; The input value set is: P = {p1, p2, p3...pn}; The set of impact values ​​of precipitation on environmental and water conservation projects is: A = {A1, A2, A3…An}; The impact value set of evaporation on environmental and water conservation projects is: B = {B1, B2, B3…Bn}; The set of regression coefficient combinations G is calculated based on the following formula 1; G=(H T H) -1 H T P in, The regression coefficient combination G includes parameters G1, G2 and G0; According to the set of regression coefficient combinations G, the optimal parameter combinations G11, G21 and G01 are obtained; Monitor and obtain actual precipitation and actual evapotranspiration; According to the optimal parameter combination G11, G21 and G01, as well as the actual precipitation and actual evapotranspiration, the actual optimal investment value P1 of the environmental and water conservation project is calculated using Formula 1; Obtain the initial investment of the environmental and water conservation project, use the set long short-term memory network model to predict the subsequent investment of multiple set periods, and obtain multiple subsequent investment prediction values; If the cumulative value of the subsequent investment forecast value reaches the actual optimal investment value P1, the subsequent additional investment value of the environmental and water conservation project is calculated to obtain the calculated value. If the calculated value is greater than the set calculation threshold, the effectiveness of the environmental and water conservation project is evaluated based on the test value.

Images