Hierarchical management method and device for transformer substations

Abstract

According to the hierarchical management method and device for the transformer substation, the index value of the energy efficiency evaluation index is combined with the statistical quota value of the energy efficiency evaluation score, the energy efficiency level of the transformer substation can be accurately evaluated by calculating the energy efficiency evaluation score of the transformer substation, and accurate and efficient hierarchical management of the energy efficiency of the transformer substation is achieved. According to the invention, energy utilization efficiency and carbon emission conditions of various devices in the operation process of the transformer substation can be visually reflected, accurate evaluation of the energy efficiency level of the transformer substation is realized, and a grading basis is provided for energy efficiency management of the transformer substation. Meanwhile, the transformer substations in the area are subjected to hierarchical management, the pertinence and accuracy of hierarchical management can be improved, and scientific evaluation and management of energy conservation and emission reduction of the transformer substations are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of power systems, and in particular to a hierarchical management method and device for substations. Background Art

[0002] With the rapid development of energy technologies, power systems face the dual challenges of improving energy efficiency and transitioning to a low-carbon economy during energy conversion and transmission. Substations, as key nodes in energy transmission, perform functions such as energy distribution, voltage regulation, and power system stability. Therefore, substation energy efficiency management directly impacts the overall energy efficiency of the power system, necessitating energy efficiency assessments.

[0003] Related technologies typically evaluate substation energy efficiency by calculating the values of energy efficiency evaluation indicators. However, due to significant differences in factors such as location, environmental conditions, equipment status, and energy efficiency characteristics among different substations, the unified and extensive evaluation methods used in related technologies can easily lead to problems such as irrational allocation of transmission and transformation equipment and insufficient utilization of substation energy-saving capabilities. This lack of detailed substation management makes it impossible to meet the differentiated management needs of different substations. Summary of the Invention

[0004] In order to solve the problem that the existing technology cannot meet the differentiated management needs of different substations, the present application provides a hierarchical management method and device for substations, which combines the index value of the energy efficiency evaluation index with the statistical quota value of the energy efficiency evaluation score. By calculating the energy efficiency evaluation score of the substation, the energy efficiency level of the substation can be accurately evaluated, thereby realizing precise and efficient hierarchical management of the substation energy efficiency.

[0005] In a first aspect, the present application provides a hierarchical management method for substations, which may include:

[0006] Determine the energy efficiency evaluation index of the substation and calculate the index value of each energy efficiency evaluation index.

[0007] The energy efficiency evaluation score of the substation is calculated according to the index value of each energy efficiency evaluation index, and the statistical quota value of the energy efficiency evaluation score is calculated.

[0008] Substations are managed in different levels according to the statistical quota values of energy efficiency evaluation scores.

[0009] Optionally, the energy efficiency evaluation indicators of the substation include energy efficiency evaluation indicators of power transmission and transformation equipment, energy efficiency evaluation indicators of supporting equipment, energy efficiency evaluation indicators of building structures and carbon efficiency evaluation indicators of the substation.

[0010] The energy efficiency evaluation indicators of power transmission and transformation equipment include the comprehensive energy consumption rate of transformers, line loss rate, and energy consumption of capacitors and reactors.

[0011] The energy efficiency evaluation indicators of supporting equipment include the energy efficiency of the cooling system, the energy efficiency of air-conditioning equipment, the energy saving rate of lighting equipment and the energy consumption of secondary equipment.

[0012] Energy efficiency evaluation indicators of building structures include building shape coefficient, window-to-wall area ratio and heat transfer coefficient.

[0013] The carbon efficiency assessment indicators of substations include carbon emissions per unit building area.

[0014] For example, the comprehensive energy consumption rate of the transformer satisfies:

[0015]

[0016] Among them, A1 represents the comprehensive energy consumption rate of the transformer, W B represents the energy consumption of the transformer, β represents the load factor of the transformer, S N Indicates the rated capacity of the transformer, Indicates the average power factor on the load side of the transformer.

[0017] The energy efficiency of the cooling system meets:

[0018]

[0019] Where B1 represents the energy efficiency of the cooling system. 油自 Indicates the total power consumed by the oil-immersed self-cooling cooling system, P 油风 Indicates the total power consumed by the oil-immersed air-cooled cooling system. 强油 Represents the total power consumed by the forced oil circulation cooling system. a1 represents the percentage of units with oil-immersed self-cooling cooling systems, a2 represents the percentage of units with oil-immersed air-cooling cooling systems, and a3 represents the percentage of units with forced oil circulation cooling systems.

[0020] Carbon emissions per unit building area must meet the following requirements:

[0021]

[0022] Where D1 represents the carbon emissions per unit building area, S represents the total building area of the substation, and C e Represents the annual carbon emissions of the substation, satisfying C e =(W e -E e )A, A represents the carbon emission factor of electricity, W e Indicates the annual power consumption of the substation, E e Indicates the annual power generation of the substation.

[0023] In some possible implementations, calculating the energy efficiency evaluation score of the substation according to the index value of each energy efficiency evaluation index includes:

[0024] The subjective weighting method is used to calculate the subjective weight of each energy efficiency evaluation indicator.

[0025] The objective weighting method is used to calculate the objective weight of each energy efficiency evaluation indicator.

[0026] The comprehensive weight of each energy efficiency evaluation indicator is calculated based on the subjective weight and objective weight of each energy efficiency evaluation indicator.

[0027] The energy efficiency evaluation score of the substation is calculated based on the comprehensive weight of each energy efficiency evaluation indicator.

[0028] Optionally, the energy efficiency assessment score of the substation meets the following requirements:

[0029]

[0030] Among them, Score represents the energy efficiency evaluation score of the substation, w k represents the comprehensive weight of the kth energy efficiency evaluation index, Z k represents the dimensionless value of the kth energy efficiency evaluation index, and m represents the number of energy efficiency evaluation indicators.

[0031] In some other possible implementations, the statistical quota value of the energy efficiency evaluation score is calculated, including:

[0032] Substations are classified according to their technical parameters and building structures to obtain multiple categories.

[0033] Calculate the statistical quota value of the energy efficiency assessment score for each category based on the quota level method.

[0034] For example, the statistical quota value of the energy efficiency assessment score satisfies:

[0035]

[0036] Among them, Q represents the statistical quota value of energy efficiency assessment score, represents the average energy efficiency evaluation score of substations in each category, S represents the standard deviation of the energy efficiency evaluation score of substations in each category, and Z α It represents the standard normal distribution probability density value corresponding to the quota level of (1.α), and α represents the quota level value of the energy efficiency evaluation score, which is determined by sorting the transformers in each category according to the energy efficiency evaluation score. set1 When α=α set2 When α=α set3 When , the statistical quota value is the guiding value of the energy efficiency evaluation score. set1 represents the first preset threshold, α set2represents the second preset threshold, α set3 Represents the third preset threshold, satisfying α set1 <α set2 <α set3 The benchmark value is greater than the constraint value and less than the bootstrap value.

[0037] In another possible implementation, substations are managed in a hierarchical manner according to the statistical quota values of energy efficiency evaluation scores, including:

[0038] When the energy efficiency evaluation score of the substation is less than the constraint value, the power transmission and transformation equipment in the substation is replaced.

[0039] When the energy efficiency evaluation score of the substation is greater than or equal to the constraint value and less than the benchmark value, the energy efficiency of the transmission and transformation equipment is evaluated.

[0040] When the energy efficiency evaluation score of the substation is greater than or equal to the benchmark value and less than the guidance value, the substation is inspected and maintained.

[0041] When the energy efficiency evaluation score of the substation is greater than or equal to the guidance value, maintain normal operation of the substation.

[0042] In a second aspect, the present application provides a hierarchical management device for a substation, which may include:

[0043] The first calculation module is used to determine the energy efficiency evaluation index of the substation and calculate the index value of each energy efficiency evaluation index.

[0044] The second calculation module is used to calculate the energy efficiency evaluation score of the substation according to the index value of each energy efficiency evaluation index, and calculate the statistical quota value of the energy efficiency evaluation score.

[0045] The management module is used to manage substations in different levels according to the statistical quota values of energy efficiency evaluation scores.

[0046] Optionally, the energy efficiency evaluation indicators of the substation include energy efficiency evaluation indicators of power transmission and transformation equipment, energy efficiency evaluation indicators of supporting equipment, energy efficiency evaluation indicators of building structures and carbon efficiency evaluation indicators of the substation.

[0047] The energy efficiency evaluation indicators of power transmission and transformation equipment include the comprehensive energy consumption rate of transformers, line loss rate, and energy consumption of capacitors and reactors.

[0048] The energy efficiency evaluation indicators of supporting equipment include the energy efficiency of the cooling system, the energy efficiency of air-conditioning equipment, the energy saving rate of lighting equipment and the energy consumption of secondary equipment.

[0049] Energy efficiency evaluation indicators of building structures include building shape coefficient, window-to-wall area ratio and heat transfer coefficient.

[0050] The carbon efficiency assessment indicators of substations include carbon emissions per unit building area.

[0051] Furthermore, the comprehensive energy consumption rate of the transformer satisfies:

[0052]

[0053] Among them, A1 represents the comprehensive energy consumption rate of the transformer, W B represents the energy consumption of the transformer, β represents the load factor of the transformer, S N Indicates the rated capacity of the transformer, Indicates the average power factor on the load side of the transformer.

[0054] The energy efficiency of the cooling system meets:

[0055]

[0056] Where B1 represents the energy efficiency of the cooling system. 油自 Indicates the total power consumed by the oil-immersed self-cooling cooling system, P 油风 Indicates the total power consumed by the oil-immersed air-cooled cooling system. 强油 Represents the total power consumed by the forced oil circulation cooling system. a1 represents the percentage of units with oil-immersed self-cooling cooling systems, a2 represents the percentage of units with oil-immersed air-cooling cooling systems, and a3 represents the percentage of units with forced oil circulation cooling systems.

[0057] Carbon emissions per unit building area must meet the following requirements:

[0058]

[0059] Where D1 represents the carbon emissions per unit building area, S represents the total building area of the substation, and C e Represents the annual carbon emissions of the substation, satisfying C e =(W e -E e )A, A represents the carbon emission factor of electricity, W e Indicates the annual power consumption of the substation, E e Indicates the annual power generation of the substation.

[0060] In a possible implementation, the second calculation module is specifically configured to:

[0061] The subjective weighting method is used to calculate the subjective weight of each energy efficiency evaluation indicator.

[0062] The objective weighting method is used to calculate the objective weight of each energy efficiency evaluation indicator.

[0063] The comprehensive weight of each energy efficiency evaluation indicator is calculated based on the subjective weight and objective weight of each energy efficiency evaluation indicator.

[0064] The energy efficiency evaluation score of the substation is calculated based on the comprehensive weight of each energy efficiency evaluation indicator.

[0065] Optionally, the energy efficiency assessment score of the substation meets the following requirements:

[0066]

[0067] Among them, Score represents the energy efficiency evaluation score of the substation, w k represents the comprehensive weight of the kth energy efficiency evaluation index, Z k represents the dimensionless value of the kth energy efficiency evaluation index, and m represents the number of energy efficiency evaluation indicators.

[0068] In another possible implementation, the second calculation module is specifically configured to:

[0069] Substations are classified according to their technical parameters and building structures to obtain multiple categories.

[0070] Calculate the statistical quota value of the energy efficiency assessment score for each category based on the quota level method.

[0071] Optionally, the statistical quota value of the energy efficiency assessment score meets the following requirements:

[0072]

[0073] Among them, Q represents the statistical quota value of energy efficiency assessment score, represents the average energy efficiency evaluation score of substations in each category, S represents the standard deviation of the energy efficiency evaluation score of substations in each category, and Z α It represents the standard normal distribution probability density value corresponding to the quota level of (1.α), and α represents the quota level value of the energy efficiency evaluation score, which is determined by sorting the transformers in each category according to the energy efficiency evaluation score. set1 When α=α set2 When α=α set3 When , the statistical quota value is the guiding value of the energy efficiency evaluation score. set1 represents the first preset threshold, α set2 represents the second preset threshold, α set3 Represents the third preset threshold, satisfying α set1 <α set2 <α set3 The benchmark value is greater than the constraint value and less than the bootstrap value.

[0074] In another possible implementation, the management module is specifically configured to:

[0075] When the energy efficiency evaluation score of the substation is less than the constraint value, the power transmission and transformation equipment in the substation is replaced.

[0076] When the energy efficiency evaluation score of the substation is greater than or equal to the constraint value and less than the benchmark value, the energy efficiency of the transmission and transformation equipment is evaluated.

[0077] When the energy efficiency evaluation score of the substation is greater than or equal to the benchmark value and less than the guidance value, the substation is inspected and maintained.

[0078] When the energy efficiency evaluation score of the substation is greater than or equal to the guidance value, maintain normal operation of the substation.

[0079] On the other hand, the present application also provides a computer device, including: one or more processors.

[0080] A processor is used to execute one or more programs.

[0081] When one or more programs are executed by one or more processors, the hierarchical management method described above is implemented.

[0082] In another aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed, implements the aforementioned hierarchical management method.

[0083] Compared with the prior art, the present invention has the following advantages:

[0084] In the hierarchical management method of substations provided in this application, the index value of the energy efficiency evaluation index is combined with the statistical quota value of the energy efficiency evaluation score. By calculating the energy efficiency evaluation score of the substation, the energy efficiency level of the substation can be accurately evaluated, thereby realizing precise and efficient hierarchical management of the substation energy efficiency.

[0085] This application determines the energy efficiency evaluation indicators of the substation and calculates the index values of each energy efficiency evaluation indicator, which can intuitively reflect the energy utilization efficiency and carbon emissions of various equipment in the substation during operation.

[0086] This application calculates the energy efficiency evaluation score of the substation through the comprehensive weight of the energy efficiency evaluation indicators, realizes the accurate evaluation of the energy efficiency level of the substation, and calculates the statistical quota value of the energy efficiency evaluation score, providing a grading basis for the implementation of energy efficiency management of the substation.

[0087] This application implements hierarchical management of substations in the region, which can improve the pertinence and accuracy of hierarchical management and realize scientific assessment and management of energy conservation and emission reduction of substations. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0089] Figure 1 This is a schematic flow chart of the hierarchical management method in an embodiment of the present application;

[0090] Figure 2 This is a schematic structural diagram of the energy efficiency evaluation index in the embodiment of the present application;

[0091] Figure 3 This is a schematic structural diagram of a hierarchical management device in an embodiment of the present application. DETAILED DESCRIPTION

[0092] The technical solution in this application will be described below with reference to the accompanying drawings.

[0093] The terms "first," "second," and the like in the description, embodiments, claims, and drawings of this application are used solely for descriptive purposes and are not to be construed as indicating or implying relative importance or order. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions, such as, for example, inclusion of a series of steps or units. A method, system, product, or apparatus is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0094] It should be understood that in this application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0095] Example 1:

[0096] The embodiment of the present application provides a hierarchical management method for a substation, such as Figure 1The hierarchical management method 100 includes the following steps:

[0097] Step S1: Determine the energy efficiency evaluation index of the substation and calculate the index value of each energy efficiency evaluation index.

[0098] Step S2: Calculate the energy efficiency evaluation score of the substation according to the index value of each energy efficiency evaluation index, and calculate the statistical quota value of the energy efficiency evaluation score.

[0099] Step S3: Perform hierarchical management of substations according to the statistical quota values of energy efficiency evaluation scores.

[0100] Optionally, the energy efficiency evaluation index of the substation in step S1 includes the energy efficiency evaluation index of the power transmission and transformation equipment, the energy efficiency evaluation index of the supporting equipment, the energy efficiency evaluation index of the building structure and the carbon efficiency evaluation index of the substation, such as Figure 2 shown.

[0101] The energy efficiency evaluation indicators of power transmission and transformation equipment may include the comprehensive energy consumption rate of transformers, line loss rate, and energy consumption of capacitors and reactors.

[0102] The energy efficiency evaluation indicators of supporting equipment include the energy efficiency of the cooling system, the energy efficiency of air-conditioning equipment, the energy saving rate of lighting equipment and the energy consumption of secondary equipment.

[0103] Energy efficiency evaluation indicators of building structures include building shape coefficient, window-to-wall area ratio and heat transfer coefficient.

[0104] The carbon efficiency assessment indicators of substations include carbon emissions per unit building area.

[0105] (1) The comprehensive energy consumption rate of the transformer meets the following requirements:

[0106]

[0107] Among them, A1 represents the comprehensive energy consumption rate of the transformer, β represents the load factor of the transformer, S N Indicates the rated capacity of the transformer, Indicates the average power factor on the load side of the transformer; W B Represents the energy consumption of the transformer, satisfying W B =(K f B 2 f B 2 V+I B 2 R B +H0+λ 2 H i )T B , K f represents the material coefficient of the transformer, B represents the magnetic induction intensity of the transformer, f Brepresents the frequency of the transformer current, V represents the volume of the core, I B Represents the transformer current, R B Represents the transformer coil resistance, T B represents the operating time of the transformer, H0 represents the reactive power loss of the transformer under no-load operation, λ represents the proportional coefficient of the transformer, H i Indicates the reactive power loss when the transformer is short-circuited.

[0108] (2) Line loss rate meets the following requirements:

[0109]

[0110] Where A2 represents the line loss rate, W1 represents the electric energy input at the beginning of the line, and W2 represents the electric energy output at the end of the line; W z Indicates the electrical energy lost in the line, satisfying I represents the phase current of the line, R z Indicates the DC resistance of the circuit per unit length at the operating temperature, R k Indicates the DC resistance of the circuit casing per unit length at operating temperature, T Z Indicates the time when the line is energized. Indicates the skin effect coefficient of the circuit itself, It represents the skin effect coefficient of the circuit casing, and L represents the length of the circuit.

[0111] (3) The energy consumption of capacitors and reactors meets the following requirements:

[0112] A3=ωU C 2 T C Ctanδ+I L 2 R L T L

[0113] Where A3 represents the energy consumption of capacitors and reactors, ω represents the angular frequency of capacitor current; U C It represents the effective value of the voltage across the capacitor, C represents the capacitance of the capacitor, δ represents the dielectric loss angle of the capacitor, I L Indicates the current flowing through the reactor, R L Indicates the equivalent resistance of the reactor.

[0114] (4) The energy efficiency of the cooling system meets the following requirements:

[0115]

[0116] Where B1 represents the energy efficiency of the cooling system. 油自 Indicates the total power consumed by the oil-immersed self-cooling cooling system, P 油风Indicates the total power consumed by the oil-immersed air-cooled cooling system. 强油 Represents the total power consumed by the forced oil circulation cooling system. a1 represents the percentage of units with oil-immersed self-cooling cooling systems, a2 represents the percentage of units with oil-immersed air-cooling cooling systems, and a3 represents the percentage of units with forced oil circulation cooling systems.

[0117] (5) The energy efficiency of air-conditioning equipment meets the following requirements:

[0118]

[0119] Among them, B2 represents the energy efficiency of air-conditioning equipment, n represents the total number of air-conditioning equipment, E ER,i represents the energy efficiency ratio of the i-th air-conditioning equipment, P out,i represents the cooling capacity of the i-th air-conditioning equipment, P out,total Indicates the total customized cooling capacity of all air-conditioning equipment.

[0120] (6) The energy saving rate of lighting equipment meets the following requirements:

[0121]

[0122] Among them, B3 represents the energy saving rate of lighting equipment, P es,r represents the power of the rth energy-saving lamp, p represents the total number of energy-saving lamps, q represents the total number of lighting equipment, P j Represents the power of the j-th lighting device.

[0123] (7) The energy consumption of secondary equipment meets the following requirements:

[0124]

[0125] Among them, B4 represents the energy consumption of secondary equipment, T DC represents the operating time of the DC system, c represents the number of charging cabinets, d represents the number of circuit breakers or disconnectors, U DC_k is the charging voltage of the kth charging cabinet, I DC_k Represents the charging current of the kth charging cabinet, W g Represents the energy storage capacity of the operating mechanism of the g-th circuit breaker, N g Indicates the number of operations of the g-th circuit breaker.

[0126] (8) The building shape coefficient meets the following requirements:

[0127]

[0128] Among them, C1 represents the building shape coefficient, F0 represents the building's surface area, and V0 represents the building's volume.

[0129] (9) The window-to-wall area ratio meets the following requirements:

[0130]

[0131] Among them, C2 represents the window-to-wall area ratio, S 窗 It represents the total area of windows, balconies, doors and transparent parts of curtain walls on the exterior wall. 墙 Indicates the total area facing the building.

[0132] (10) The heat transfer coefficient satisfies:

[0133]

[0134] Among them, C3 represents the heat transfer coefficient, and R0 represents the heat transfer resistance of the building envelope structure.

[0135] (11) Carbon emissions per unit building area must meet the following requirements:

[0136]

[0137] Where D1 represents the carbon emissions per unit building area, S represents the total building area of the substation, and C e Represents the annual carbon emissions of the substation, satisfying C e =(W e -E e )A, A represents the carbon emission factor of electricity;

[0138] W e Represents the annual power consumption of the substation, satisfying:

[0139] W e =W B,e +W Z,e +W C,e +W K,e +W L,e +W CL,e +W aux,e

[0140] Among them, W e Indicates the annual power consumption of the substation. W B,e Indicates the annual power consumption of the transformer, which can be obtained by multiplying the transformer's energy consumption by the transformer's power consumption time. W Z,e Indicates the annual power consumption of the line, which can be obtained by multiplying the line energy consumption by the power-on time of the line. C,e The annual power consumption of the cooling system can be expressed by the energy consumption of the cooling system W C Multiplying it by the power consumption time of the cooling system satisfies W C =(P 油自 a1+P 油风 a2+P 强油 a3)T C , P 油自is the total power consumed by the oil-immersed self-cooling cooling system, P 油风 is the total power consumed by the oil-immersed air-cooled cooling system, P 强油 is the total power consumed by the forced oil circulation cooling system, a1 represents the proportion of oil-immersed self-cooling cooling systems, a2 represents the proportion of oil-immersed air-cooling cooling systems, a3 represents the proportion of forced oil circulation cooling systems, T C is the operating time of the cooling system. K,e Indicates the annual power consumption of the air-conditioning equipment, which can be expressed by the energy consumption W of the air-conditioning equipment. K Multiplying it by the power consumption time of the air conditioning equipment, we can get Q K is the cooling capacity of the air-conditioning equipment, EER is the energy efficiency ratio of the air-conditioning equipment, T K W is the usage time of the air conditioning equipment. L,e Indicates the annual power consumption of lighting equipment, which can be expressed by the energy consumption of lighting equipment W L Multiplying it by the power consumption time of the lighting equipment, we can get the value of W L =P L T L , W L is the power consumption of lighting equipment; P L is the total power of the lighting equipment, T L W is the usage time of lighting equipment. CL,e Indicates the annual power consumption of capacitors and reactors. W aux,e It represents the annual power consumption of the secondary equipment, which can be obtained by multiplying the energy consumption of the secondary equipment by the power consumption time of the secondary equipment.

[0141] E e Represents the annual power generation of the substation, satisfying:

[0142] E e =E EV,e +E wind,e

[0143] Where, E EV,e Indicates the annual power generation of the photovoltaic system, E wind,e Indicates the annual electricity generation from wind power.

[0144] In some embodiments, calculating the energy efficiency evaluation score of the substation according to the index value of each energy efficiency evaluation index includes:

[0145] Calculate the subjective weight of each energy efficiency evaluation indicator using a subjective weighting method (such as the priority chart method). Calculate the objective weight of each energy efficiency evaluation indicator using an objective weighting method (such as the entropy method). Calculate the combined weight of each energy efficiency evaluation indicator based on the subjective and objective weights. Calculate the substation's energy efficiency evaluation score based on the combined weight of each energy efficiency evaluation indicator.

[0146] Optionally, the energy efficiency assessment score of the substation meets the following requirements:

[0147]

[0148] Among them, Score represents the energy efficiency evaluation score of the substation, w k represents the comprehensive weight of the kth energy efficiency evaluation index, Z k represents the dimensionless value of the kth energy efficiency evaluation index, and m represents the number of energy efficiency evaluation indicators.

[0149] In some other embodiments, calculating the statistical quota value of the energy efficiency assessment score includes:

[0150] Substations are classified according to their technical parameters and building structures to obtain multiple categories.

[0151] Calculate the statistical quota value of the energy efficiency assessment score for each category based on the quota level method.

[0152] The substation's technical parameters mainly include: substation voltage level, main transformer capacity, and other category parameters. The substation's building structure mainly includes: building area, building location, and other category parameters.

[0153] For example, the statistical quota value of the energy efficiency assessment score satisfies:

[0154]

[0155] Among them, Q represents the statistical quota value of energy efficiency assessment score, represents the average energy efficiency evaluation score of substations in each category, S represents the standard deviation of the energy efficiency evaluation score of substations in each category, and Z α It represents the standard normal distribution probability density value corresponding to the quota level of (1.α), and α represents the quota level value of the energy efficiency evaluation score, which is determined by sorting the transformers in each category according to the energy efficiency evaluation score. set1 When α=α set2 When α=α set3 When , the statistical quota value is the guiding value of the energy efficiency evaluation score. set1 represents the first preset threshold, α set2 represents the second preset threshold, α set3 Represents the third preset threshold, satisfying α set1 <α set2 <α set3 The reference value is greater than the constraint value and less than the guide value. In the embodiment of the present application, α set1You can take 0.25, α set2 You can take 0.50, α set3 You can take 0.75.

[0156] In some further embodiments, the hierarchical management of substations according to the statistical quota values of the energy efficiency evaluation scores in step S3 includes:

[0157] When the energy efficiency evaluation score of the substation is less than the constraint value, the power transmission and transformation equipment in the substation is replaced.

[0158] When the energy efficiency evaluation score of the substation is greater than or equal to the constraint value and less than the benchmark value, the energy efficiency of the power transmission and transformation equipment is evaluated.

[0159] When the energy efficiency evaluation score of the substation is greater than or equal to the benchmark value and less than the guidance value, the substation is inspected and maintained.

[0160] When the energy efficiency evaluation score of the substation is greater than or equal to the guidance value, maintain normal operation of the substation.

[0161] Example 2:

[0162] Based on the same inventive concept, the embodiment of the present application also provides a hierarchical management device for a substation. Figure 3 As shown, the hierarchical management apparatus 200 may include:

[0163] The first calculation module 201 is used to determine the energy efficiency evaluation index of the substation and calculate the index value of each energy efficiency evaluation index.

[0164] The second calculation module 202 is configured to calculate the energy efficiency evaluation score of the substation according to the index value of each energy efficiency evaluation index, and calculate the statistical quota value of the energy efficiency evaluation score.

[0165] The management module 203 is used to perform hierarchical management of substations according to the statistical quota values of energy efficiency evaluation scores.

[0166] Optionally, the energy efficiency evaluation indicators of the substation include energy efficiency evaluation indicators of power transmission and transformation equipment, energy efficiency evaluation indicators of supporting equipment, energy efficiency evaluation indicators of building structures and carbon efficiency evaluation indicators of the substation.

[0167] The energy efficiency evaluation indicators of power transmission and transformation equipment include the comprehensive energy consumption rate of transformers, line loss rate, and energy consumption of capacitors and reactors.

[0168] The energy efficiency evaluation indicators of supporting equipment include the energy efficiency of the cooling system, the energy efficiency of air-conditioning equipment, the energy saving rate of lighting equipment and the energy consumption of secondary equipment.

[0169] Energy efficiency evaluation indicators of building structures include building shape coefficient, window-to-wall area ratio and heat transfer coefficient.

[0170] The carbon efficiency assessment indicators of substations include carbon emissions per unit building area.

[0171] Furthermore, the comprehensive energy consumption rate of the transformer satisfies:

[0172]

[0173] Among them, A1 represents the comprehensive energy consumption rate of the transformer, W B represents the energy consumption of the transformer, β represents the load factor of the transformer, S N Indicates the rated capacity of the transformer, Indicates the average power factor on the load side of the transformer.

[0174] The energy efficiency of the cooling system meets:

[0175]

[0176] Where B1 represents the energy efficiency of the cooling system. 油自 Indicates the total power consumed by the oil-immersed self-cooling cooling system, P 油风 Indicates the total power consumed by the oil-immersed air-cooled cooling system. 强油 Represents the total power consumed by the forced oil circulation cooling system. a1 represents the percentage of units with oil-immersed self-cooling cooling systems, a2 represents the percentage of units with oil-immersed air-cooling cooling systems, and a3 represents the percentage of units with forced oil circulation cooling systems.

[0177] Carbon emissions per unit building area must meet the following requirements:

[0178]

[0179] Where D1 represents the carbon emissions per unit building area, S represents the total building area of the substation, and C e Represents the annual carbon emissions of the substation, satisfying C e =(W e -E e )A, A represents the carbon emission factor of electricity, W e Indicates the annual power consumption of the substation, E e Indicates the annual power generation of the substation.

[0180] It should be noted that for the calculation of other energy efficiency evaluation indicators, please refer to the above, and the embodiments of this application will not be repeated here.

[0181] In a possible implementation, the second calculation module 202 is specifically configured to:

[0182] The subjective weighting method is used to calculate the subjective weight of each energy efficiency evaluation indicator.

[0183] The objective weighting method is used to calculate the objective weight of each energy efficiency evaluation indicator.

[0184] The comprehensive weight of each energy efficiency evaluation indicator is calculated based on the subjective weight and objective weight of each energy efficiency evaluation indicator.

[0185] The energy efficiency evaluation score of the substation is calculated based on the comprehensive weight of each energy efficiency evaluation indicator.

[0186] Optionally, the energy efficiency assessment score of the substation meets the following requirements:

[0187]

[0188] Among them, Score represents the energy efficiency evaluation score of the substation, w k represents the comprehensive weight of the kth energy efficiency evaluation index, Z k represents the dimensionless value of the kth energy efficiency evaluation index, and m represents the number of energy efficiency evaluation indicators.

[0189] In another possible implementation, the second calculation module 202 is specifically configured to:

[0190] Substations are classified according to their technical parameters and building structures to obtain multiple categories.

[0191] Calculate the statistical quota value of the energy efficiency assessment score for each category based on the quota level method.

[0192] Optionally, the statistical quota value of the energy efficiency assessment score meets the following requirements:

[0193]

[0194] Among them, Q represents the statistical quota value of energy efficiency assessment score, represents the average energy efficiency evaluation score of substations in each category, S represents the standard deviation of the energy efficiency evaluation score of substations in each category, and Z α It represents the standard normal distribution probability density value corresponding to the quota level of (1.α), and α represents the quota level value of the energy efficiency evaluation score, which is determined by sorting the transformers in each category according to the energy efficiency evaluation score. set1 When α=α set2 When α=α set3 When , the statistical quota value is the guiding value of the energy efficiency evaluation score. set1 represents the first preset threshold, α set2 represents the second preset threshold, α set3 Represents the third preset threshold, satisfying α set1 <α set2 <αset3 The benchmark value is greater than the constraint value and less than the bootstrap value.

[0195] In another possible implementation, the management module 203 is specifically configured to:

[0196] When the energy efficiency evaluation score of the substation is less than the constraint value, the power transmission and transformation equipment in the substation is replaced.

[0197] When the energy efficiency evaluation score of the substation is greater than or equal to the constraint value and less than the benchmark value, the energy efficiency of the transmission and transformation equipment is evaluated.

[0198] When the energy efficiency evaluation score of the substation is greater than or equal to the benchmark value and less than the guidance value, the substation is inspected and maintained.

[0199] When the energy efficiency evaluation score of the substation is greater than or equal to the guidance value, maintain normal operation of the substation.

[0200] Example 3:

[0201] Based on the same inventive concept, an embodiment of the present application further provides a computer device, comprising a processor and a memory, the memory being used to store a computer program, the computer program comprising program instructions, and the processor being used to execute the program instructions stored in the computer storage medium. The processor may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., which are the computing core and control core of the terminal, and are suitable for implementing one or more instructions, specifically suitable for loading and executing one or more instructions in the computer storage medium to implement the corresponding method flow or corresponding functions, so as to implement the steps of the hierarchical management method provided in the above embodiment.

[0202] Example 4:

[0203] Based on the same inventive concept, an embodiment of the present application also provides a computer-readable storage medium, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device for storing programs and data. It is understandable that the computer-readable storage medium here can include both built-in storage media in the computer device and, of course, extended storage media supported by the computer device. The computer-readable storage medium provides a storage space that stores the operating system of the terminal. In addition, one or more instructions suitable for being loaded and executed by the processor are also stored in the storage space. These instructions can be one or more computer programs (including program codes). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the steps of the hierarchical management method provided in the above embodiment.

[0204] Those skilled in the art will appreciate that embodiments of the application may be provided as methods, systems, or computer program products. Thus, the application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0205] The application is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as a combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0206] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1The function specified in one or more boxes.

[0207] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0208] The above are merely embodiments of the application and are not intended to limit the application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the application are included in the scope of the claims of the pending application.

Claims

1. A hierarchical management method for substations, characterized in that: include: Determining energy efficiency evaluation indicators of the substation and calculating the index value of each energy efficiency evaluation indicator; Calculating the energy efficiency evaluation score of the substation according to the index value of each energy efficiency evaluation index, and calculating the statistical quota value of the energy efficiency evaluation score; The substations are managed in a hierarchical manner according to the statistical quota values of the energy efficiency evaluation scores.

2. The hierarchical management method according to claim 1, characterized in that: The energy efficiency evaluation indicators of the substation include the energy efficiency evaluation indicators of the power transmission and transformation equipment, the energy efficiency evaluation indicators of the supporting equipment, the energy efficiency evaluation indicators of the building structure and the carbon efficiency evaluation indicators of the substation; The energy efficiency evaluation indicators of the power transmission and transformation equipment include the comprehensive energy consumption rate of the transformer, the line loss rate, and the energy consumption of the capacitor and reactor; The energy efficiency evaluation indicators of the supporting equipment include the energy efficiency of the cooling system, the energy efficiency of the air-conditioning equipment, the energy saving rate of the lighting equipment and the energy consumption of the secondary equipment; The energy efficiency evaluation indicators of the building structure include building shape coefficient, window-to-wall area ratio and heat transfer coefficient; The carbon efficiency evaluation index of the substation includes carbon emissions per unit building area.

3. The hierarchical management method according to claim 2, characterized in that: The comprehensive energy consumption rate of the transformer satisfies: Among them, A1 represents the comprehensive energy consumption rate of the transformer, W B represents the energy consumption of the transformer, β represents the load factor of the transformer, S N Indicates the rated capacity of the transformer, Indicates the average power factor of the load side of the transformer; The energy efficiency of the cooling system satisfies: Wherein, B1 represents the energy efficiency of the cooling system; P 油自 Indicates the total power consumed by the oil-immersed self-cooling cooling system, P 油风 Indicates the total power consumed by the oil-immersed air-cooled cooling system; P 强油 represents the total power consumed by the forced oil circulation cooling system; a1 represents the proportion of the number of oil-immersed self-cooling cooling systems, a2 represents the proportion of the number of oil-immersed air-cooling cooling systems, and a3 represents the proportion of the number of forced oil circulation cooling systems; The carbon emissions per unit building area must meet the following requirements: Where D1 represents the carbon emissions per unit building area, S represents the total building area of the substation, C e Represents the annual carbon emissions of the substation, satisfying C e =(W e -E e )A, A represents the carbon emission factor of electricity, W e represents the annual power consumption of the substation, E e Indicates the annual power generation of the substation.

4. The hierarchical management method according to claim 1, characterized in that: Calculating the energy efficiency evaluation score of the substation according to the index value of each energy efficiency evaluation index includes: The subjective weighting method is used to calculate the subjective weight of each energy efficiency evaluation indicator; The objective weighting method is used to calculate the objective weight of each energy efficiency evaluation indicator; Calculating the comprehensive weight of each energy efficiency evaluation indicator according to the subjective weight and objective weight of each energy efficiency evaluation indicator; The energy efficiency evaluation score of the substation is calculated according to the comprehensive weight of each energy efficiency evaluation indicator.

5. The hierarchical management method according to claim 4, characterized in that: The energy efficiency assessment score of the substation meets the following requirements: Among them, Score represents the energy efficiency evaluation score of the substation, w k represents the comprehensive weight of the kth energy efficiency evaluation index, Z k represents the dimensionless value of the kth energy efficiency evaluation index, and m represents the number of the energy efficiency evaluation indexes.

6. The hierarchical management method according to claim 1, characterized in that: The statistical quota value for calculating the energy efficiency evaluation score includes: Classifying the substations according to their technical parameters and architectural structures to obtain multiple categories; Calculate the statistical quota value of the energy efficiency assessment score for each category based on the quota level method.

7. The hierarchical management method according to claim 6, characterized in that: The statistical quota value of the energy efficiency assessment score meets the following requirements: Wherein, Q represents the statistical quota value of the energy efficiency evaluation score, represents the average energy efficiency evaluation score of substations in each category, S represents the standard deviation of the energy efficiency evaluation score of substations in each category, and Z α represents the standard normal distribution probability density value corresponding to the quota level of (1.α), α represents the quota level value of the energy efficiency evaluation score, which is determined by sorting the transformers in each category according to the energy efficiency evaluation score; when α=α set1 When α=α, the statistical quota value is the constraint value of the energy efficiency evaluation score; when α=α set2 When α=α, the statistical quota value is the benchmark value of the energy efficiency evaluation score; when α=α set3 When , the statistical quota value is the guiding value of the energy efficiency evaluation score; wherein, α set1 represents the first preset threshold, α set2 represents the second preset threshold, α set3 Represents the third preset threshold, satisfying α set1 <α set2 <α set3 ; The reference value is greater than the constraint value and less than the guide value.

8. The hierarchical management method according to claim 7, characterized in that: The hierarchical management of the substations according to the statistical quota values of the energy efficiency evaluation scores includes: When the energy efficiency evaluation score of the substation is less than the constraint value, replacing the power transmission and transformation equipment in the substation; When the energy efficiency evaluation score of the substation is greater than or equal to the constraint value and less than the reference value, performing energy efficiency evaluation on the power transmission and transformation equipment; When the energy efficiency evaluation score of the substation is greater than or equal to the reference value and less than the guide value, repairing the substation; When the energy efficiency evaluation score of the substation is greater than or equal to the guide value, the normal operation of the substation is maintained.

9. A hierarchical management device for a substation, characterized in that: include: A first calculation module is used to determine the energy efficiency evaluation index of the substation and calculate the index value of each energy efficiency evaluation index; A second calculation module is used to calculate the energy efficiency evaluation score of the substation according to the index value of each energy efficiency evaluation index, and calculate the statistical quota value of the energy efficiency evaluation score; A management module is used to perform hierarchical management on the substation according to the statistical quota value of the energy efficiency evaluation score.

10. The hierarchical management device according to claim 9, characterized in that: The energy efficiency evaluation indicators of the substation include the energy efficiency evaluation indicators of the power transmission and transformation equipment, the energy efficiency evaluation indicators of the supporting equipment, the energy efficiency evaluation indicators of the building structure and the carbon efficiency evaluation indicators of the substation; The energy efficiency evaluation indicators of the power transmission and transformation equipment include the comprehensive energy consumption rate of the transformer, the line loss rate, and the energy consumption of the capacitor and reactor; The energy efficiency evaluation indicators of the supporting equipment include the energy efficiency of the cooling system, the energy efficiency of the air-conditioning equipment, the energy saving rate of the lighting equipment and the energy consumption of the secondary equipment; The energy efficiency evaluation indicators of the building structure include building shape coefficient, window-to-wall area ratio and heat transfer coefficient; The carbon efficiency evaluation index of the substation includes carbon emissions per unit building area.

11. The hierarchical management device according to claim 10, characterized in that: The comprehensive energy consumption rate of the transformer satisfies: Among them, A1 represents the comprehensive energy consumption rate of the transformer, W B represents the energy consumption of the transformer, β represents the load factor of the transformer, S N Indicates the rated capacity of the transformer, Indicates the average power factor of the load side of the transformer; The energy efficiency of the cooling system satisfies: Wherein, B1 represents the energy efficiency of the cooling system; P 油自 Indicates the total power consumed by the oil-immersed self-cooling cooling system, P 油风 Indicates the total power consumed by the oil-immersed air-cooled cooling system; P 强油 represents the total power consumed by the forced oil circulation cooling system; a1 represents the proportion of the number of oil-immersed self-cooling cooling systems, a2 represents the proportion of the number of oil-immersed air-cooling cooling systems, and a3 represents the proportion of the number of forced oil circulation cooling systems; The carbon emissions per unit building area must meet the following requirements: Where D1 represents the carbon emissions per unit building area, S represents the total building area of the substation, C e Represents the annual carbon emissions of the substation, satisfying C e =(W e -E e )A, A represents the carbon emission factor of electricity, W e represents the annual power consumption of the substation, E e Indicates the annual power generation of the substation.

12. The hierarchical management device according to claim 9, characterized in that: The second calculation module is specifically configured to: The subjective weighting method is used to calculate the subjective weight of each energy efficiency evaluation indicator; The objective weighting method is used to calculate the objective weight of each energy efficiency evaluation indicator; Calculating the comprehensive weight of each energy efficiency evaluation indicator according to the subjective weight and objective weight of each energy efficiency evaluation indicator; The energy efficiency evaluation score of the substation is calculated according to the comprehensive weight of each energy efficiency evaluation indicator.

13. The hierarchical management device according to claim 12, characterized in that: The energy efficiency assessment score of the substation meets the following requirements: Among them, Score represents the energy efficiency evaluation score of the substation, w k represents the comprehensive weight of the kth energy efficiency evaluation index, Z k represents the dimensionless value of the kth energy efficiency evaluation index, and m represents the number of the energy efficiency evaluation indexes.

14. The hierarchical management device according to claim 9, characterized in that: The second calculation module is specifically configured to: Classifying the substations according to their technical parameters and architectural structures to obtain multiple categories; Calculate the statistical quota value of the energy efficiency assessment score for each category based on the quota level method.

15. The hierarchical management device according to claim 14, characterized in that: The statistical quota value of the energy efficiency assessment score meets the following requirements: Wherein, Q represents the statistical quota value of the energy efficiency evaluation score, represents the average energy efficiency evaluation score of substations in each category, S represents the standard deviation of the energy efficiency evaluation score of substations in each category, and Z α represents the standard normal distribution probability density value corresponding to the quota level of (1.α), α represents the quota level value of the energy efficiency evaluation score, which is determined by sorting the transformers in each category according to the energy efficiency evaluation score; when α=α set1 When α=α, the statistical quota value is the constraint value of the energy efficiency evaluation score; when α=α set2 When α=α, the statistical quota value is the benchmark value of the energy efficiency evaluation score; when α=α set3 When , the statistical quota value is the guiding value of the energy efficiency evaluation score; wherein, α set1 represents the first preset threshold, α set2 represents the second preset threshold, α set3 Represents the third preset threshold, satisfying α set1 <α set2 <α set3 ; The reference value is greater than the constraint value and less than the guide value.

16. The hierarchical management device according to claim 15, characterized in that: The management module is specifically used for: When the energy efficiency evaluation score of the substation is less than the constraint value, replacing the power transmission and transformation equipment in the substation; When the energy efficiency evaluation score of the substation is greater than or equal to the constraint value and less than the reference value, performing energy efficiency evaluation on the power transmission and transformation equipment; When the energy efficiency evaluation score of the substation is greater than or equal to the reference value and less than the guide value, repairing the substation; When the energy efficiency evaluation score of the substation is greater than or equal to the guide value, the normal operation of the substation is maintained.

17. A computer device, characterized in that: include: one or more processors; The processor is configured to store one or more programs; When the one or more programs are executed by the one or more processors, the hierarchical management method according to any one of claims 1 to 8 is implemented.

18. A computer-readable storage medium, characterized in that A computer program is stored thereon, and when the computer program is executed, the hierarchical management method according to any one of claims 1 to 8 is implemented.

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