Data processing method, device and equipment for power distribution network

Abstract

This application provides a data processing method, apparatus, and device for power distribution networks, applicable to the field of power distribution network technology. The method includes: performing a symmetrical component transformation operation and a clock direction conversion operation on the downstream current to obtain the upstream current between the transformer and the upstream power distribution network; fusing the upstream carbon emission factor and the upstream net transmission power to obtain carbon emissions, wherein the upstream net transmission power is obtained by fusing the upstream voltage and the upstream current; determining the downstream carbon emission factor corresponding to the downstream power distribution network based on the ratio of carbon emissions to the upstream net transmission power; fusing transformer loss data, rated current, and the downstream carbon emission factor to obtain carbon loss data; fusing the downstream current, downstream voltage, and downstream carbon emission factor to obtain cyclic carbon emission data, and pushing the carbon emission amount, downstream carbon emission factor, carbon loss data, and cyclic carbon emission data to the terminal.

Description

Technical Field

[0001] This application relates to the field of power distribution network technology, and more specifically to a data processing method, apparatus and equipment for power distribution networks. Background Technology

[0002] Distribution networks are typically composed of multiple voltage level networks cascaded through distribution transformers. When carbon emission responsibility crosses the transformer interface, phase transformation between transformer windings and power coupling between ports will occur simultaneously, making it difficult to ensure physical consistency. Furthermore, there are issues such as cyclic dependence across voltage levels, which requires excessive data processing costs. Summary of the Invention

[0003] In view of the above problems, this application provides a data processing method, apparatus and equipment for power distribution networks.

[0004] According to a first aspect of this application, a data processing method for a power distribution network is provided, comprising: acquiring downstream current and downstream voltage provided by a transformer and a downstream power distribution network, upstream voltage and upstream carbon emission factor between the transformer and an upstream power distribution network, and transformer loss data and rated current of the transformer, wherein the transformer loss data includes copper loss data and iron loss data; performing a symmetrical component transformation operation and a clock direction conversion operation on the downstream current to obtain the upstream current between the transformer and the upstream power distribution network, wherein the symmetrical component transformation operation is used to convert the downstream current into a downstream component current, and the clock direction conversion operation is used to remove the upstream and downstream phase difference in the downstream component current; fusing the upstream carbon emission factor and the upstream net transmission power to obtain carbon emissions, wherein the upstream net transmission power is obtained by fusing the upstream voltage and the upstream current; determining the downstream carbon emission factor corresponding to the downstream power distribution network based on the ratio of carbon emissions to the upstream net transmission power; fusing the transformer loss data, rated current, and downstream carbon emission factor to obtain carbon loss data; fusing the downstream current, downstream voltage, and downstream carbon emission factor to obtain cyclic carbon emission data, and pushing the carbon emission amount, downstream carbon emission factor, carbon loss data, and cyclic carbon emission data to a terminal.

[0005] According to an embodiment of this application, a symmetrical component transformation operation and a clock direction conversion operation are performed on the downstream current to obtain the upstream current between the transformer interface and the upstream distribution network. This includes: fusing the vector current composed of the downstream current with the symmetrical component transformation matrix to obtain the downstream component current, which includes positive sequence component current, negative sequence component current, and zero sequence component current; based on the conversion coefficients corresponding to the positive sequence component current, negative sequence component current, and zero sequence component current, fusing the power ratio of the two interfaces of the transformer with the positive sequence component current, negative sequence component current, and zero sequence component current respectively to obtain the first target phase current corresponding to the first current channel, the second target phase current corresponding to the second current channel, and the third target phase current corresponding to the third current channel; and performing a current inverse operation on the first target phase current, the second target phase current, and the third target phase current to obtain the upstream current.

[0006] According to embodiments of this application, an inverse current operation is performed on the first target phase current, the second target phase current, and the third target phase current to obtain the upstream current, including: determining a first winding current based on the difference between the target phase current corresponding to the first current channel and the target phase current corresponding to the second current channel, wherein the first winding current represents the current between the first current channel and the second current channel; determining a second winding current based on the difference between the target phase current corresponding to the second current channel and the target phase current corresponding to the third current channel, wherein the second winding current represents the current between the second current channel and the third current channel; determining a third winding current based on the difference between the target phase current corresponding to the third current channel and the target phase current corresponding to the first current channel, wherein the third winding current represents the current between the third current channel and the first current channel; and determining the upstream current based on the first winding current, the second winding current, and the third winding current.

[0007] According to embodiments of this application, the upstream voltage includes a first upstream voltage corresponding to a first current channel, a second upstream voltage corresponding to a second current channel, and a third upstream voltage corresponding to a third current channel; the upstream net transmission power includes a first upstream net transmission power corresponding to a first winding current, a second upstream net transmission power corresponding to a second winding current, and a third upstream net transmission power corresponding to a third winding current; wherein, the first upstream net transmission power is determined based on the following operations: fusing the first upstream voltage and the first winding current to obtain a first transmission power; fusing the second upstream voltage and the first winding current to obtain a second transmission power; and fusing the first transmission power and the second transmission power to obtain a first upstream net transmission power.

[0008] According to embodiments of this application, carbon emissions include a first target carbon emission corresponding to the first winding current, a second target carbon emission corresponding to the second winding current, and a third target carbon emission corresponding to the third winding current; upstream carbon emission factors include a first carbon emission factor corresponding to the first current channel, a second carbon emission factor corresponding to the second current channel, and a third carbon emission factor corresponding to the third current channel; wherein, the first target carbon emission is determined based on the following operations: fusing the first transmission power and the first carbon emission factor to obtain the first carbon emission; fusing the second transmission power and the second carbon emission factor to obtain the second carbon emission; and fusing the first carbon emission and the second carbon emission to obtain the first target carbon emission.

[0009] According to an embodiment of this application, the downstream carbon emission factor includes a first downstream carbon emission factor corresponding to the first winding current, a second downstream carbon emission factor corresponding to the second winding current, and a third downstream carbon emission factor corresponding to the third winding current; wherein, the first downstream carbon emission factor is determined based on the following operation: the first downstream carbon emission factor is determined according to the ratio of the first target carbon emission amount to the first upstream net transmission power.

[0010] According to an embodiment of this application, determining the downstream carbon emission factor corresponding to the downstream distribution network based on the ratio of carbon emissions to upstream net transmission power further includes: when the upstream net transmission power is less than a preset power threshold, the downstream carbon emission factor is determined based on the following operations: obtaining the reverse carbon emission factor corresponding to the reverse transmission power; updating the upstream carbon emission factor based on the reverse carbon emission factor and the reverse transmission power to obtain an updated upstream carbon emission factor; updating the reverse transmission power based on the updated upstream carbon emission factor to obtain an updated reverse transmission power and an updated reverse carbon emission factor corresponding to the updated reverse transmission power; and determining the updated reverse carbon emission factor as the downstream carbon emission factor when the updated reverse carbon emission factor meets preset conditions.

[0011] According to an embodiment of this application, carbon loss data is obtained by fusing transformer loss data, rated current, and downstream carbon emission factors, including: fusing the ratio between rated current and downstream current and transformer loss data to obtain transformer loss power; and fusing transformer loss power and downstream carbon emission factors to obtain carbon loss data.

[0012] A second aspect of this application provides a data processing apparatus for a power distribution network, comprising: a first acquisition module for acquiring downstream current and downstream voltage provided by a transformer and a downstream power distribution network, upstream voltage and upstream carbon emission factor between the transformer and an upstream power distribution network, and transformer loss data and rated current of the transformer; a first execution module for performing a symmetrical component transformation operation and a clock direction conversion operation on the downstream current to obtain the upstream current between the transformer and the upstream power distribution network, wherein the symmetrical component transformation operation is used to convert the downstream current into a downstream component current, and the clock direction conversion operation is used to remove the upstream and downstream phase difference in the downstream component current; and a first fusion module. The system is used to fuse upstream carbon emission factors and upstream net transmission power to obtain carbon emissions, wherein upstream net transmission power is obtained by fusing upstream voltage and upstream current; a first determining module is used to determine the downstream carbon emission factor corresponding to the downstream distribution network based on the ratio of carbon emissions to upstream net transmission power; a second fusing module is used to fuse transformer loss data, rated current, and downstream carbon emission factors to obtain carbon loss data; and a third fusing module is used to fuse downstream current, downstream voltage, and downstream carbon emission factors to obtain cyclic carbon emission data, and push carbon emissions, downstream carbon emission factors, carbon loss data, and cyclic carbon emission data to the terminal.

[0013] A third aspect of this application provides an electronic device comprising: one or more processors; and a memory for storing one or more computer programs, wherein the one or more processors execute the one or more computer programs to implement the steps of the method described above.

[0014] A fourth aspect of this application also provides a computer-readable storage medium having a computer program or instructions stored thereon, which, when executed by a processor, implement the steps of the above-described method.

[0015] The fifth aspect of this application also provides a computer program product, including a computer program or instructions that, when executed by a processor, implement the steps of the above-described method.

[0016] According to embodiments of this application, by performing symmetrical component transformation and clock-direction conversion operations on the downstream current, the upstream current between the transformer and the upstream distribution network is obtained. The upstream net transmission power is obtained by fusing the upstream voltage and upstream current. Furthermore, the carbon emission amount is obtained by fusing the upstream carbon emission factor and the upstream net transmission power. This enables phase-by-phase physical consistency conversion of carbon information at the interface and ensures carbon conservation at the interface under zero-sequence blocking conditions on the delta-connected winding side of the transformer, based on the symmetrical component transformation and clock-direction conversion operations. Further, the downstream carbon emission factor corresponding to the downstream distribution network is determined based on the ratio of carbon emissions to the upstream net transmission power. Carbon loss data is obtained by fusing transformer loss data, rated current, and downstream carbon emission factor, allowing the carbon loss data corresponding to transformer losses to be explicitly measured as an independent loss carbon account. Cyclic carbon emission data is obtained by fusing downstream current, downstream voltage, and downstream carbon emission factor. The above operations only involve acquiring the downstream current and voltage provided by the transformer and the downstream distribution network, the upstream voltage and upstream carbon emission factor between the transformer and the upstream distribution network, and the transformer loss data and rated current of the transformer. It does not require acquiring or processing the internal topology, load and distributed power source data of the upstream and downstream networks, which can reduce data processing costs. Attached Figure Description

[0017] The above-mentioned contents, other objects, features and advantages of this application will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0018] Figure 1 The illustration shows an application scenario diagram of a data processing method, apparatus, device, medium, and program product for a power distribution network according to embodiments of this application.

[0019] Figure 2 A flowchart of a data processing method for a power distribution network according to an embodiment of this application is shown.

[0020] Figure 3 A structural block diagram of a data processing apparatus for a power distribution network according to an embodiment of this application is shown.

[0021] Figure 4 A block diagram of an electronic device suitable for implementing a data processing method for a power distribution network, according to an embodiment of this application, is shown. Detailed Implementation

[0022] The embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of this application. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of this application for ease of explanation. However, it will be apparent that one or more embodiments may be implemented without these specific details. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of this application.

[0023] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0024] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0025] When using expressions such as "at least one of A, B and C", they should generally be interpreted in accordance with the meaning that is commonly understood by those skilled in the art (e.g., "a system having at least one of A, B and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B and C, etc.).

[0026] To support the low-carbon operation of distribution networks, the responsibility for carbon emissions generated on the power supply side needs to be distributed to the load side according to the actual power transmission path. Although existing methods can achieve the transfer of carbon emission responsibility from the power supply side to the load side within a single voltage level network, actual distribution networks are usually composed of multiple voltage level networks cascaded through distribution transformers. When carbon emission responsibility crosses the transformer interface, if the interface has delta-connected windings, phase transformation between windings and power coupling between ports will occur simultaneously. Simple phase correspondence or scalar boundary conversion cannot guarantee physical consistency.

[0027] Meanwhile, with the integration of distributed generation in low-voltage distribution networks, some low-voltage feeders or certain phases may exhibit net power output, feeding back power to the upper-level network via distribution transformers. In this scenario, the carbon emission factor of the back-feeding winding should not be unidirectionally given by the upper-level network, but should be jointly determined by the distributed generation within the lower-level network and the carbon tracking results; however, carbon tracking within the lower-level network requires the phase-by-phase carbon emission factor of the upper-level network as a boundary condition, thus forming a cyclic dependence across voltage levels.

[0028] Furthermore, in three-phase four-wire low-voltage networks, the load is typically connected between the phase line and the neutral line, while carbon tracking and electricity consumption carbon responsibility accounting usually need to be standardized to the relative ground level. Delta-connected windings block zero-sequence power, causing a difference between the winding terminal diameter and the relative ground diameter when three-phase imbalance and zero-sequence current are present. Existing methods often lack a clear physical explanation and independent accounting mechanism for this difference, easily leading to unclear carbon responsibility audits across different diameters and voltage levels.

[0029] In view of this, embodiments of this application provide a data processing method for power distribution networks, which obtains downstream current and voltage provided by transformers and downstream power distribution networks, upstream voltage and upstream carbon emission factors between transformers and upstream power distribution networks, as well as transformer loss data and rated current of transformers. It can only involve the electrical quantities at the boundaries of the transformers and the transformers themselves, without needing to obtain or process the internal topology, load and distributed power source data of upstream and downstream networks. It can be combined with any upstream and downstream network carbon tracking method with boundary electrical quantity output capability, and can be applied to power distribution networks with multiple voltage levels cascaded through step-by-step application. It has low implementation cost and clear method boundaries.

[0030] In the embodiments of this application, a symmetrical component transformation operation and a clock-direction conversion operation are performed on the downstream current to obtain the upstream current between the transformer and the upstream distribution network. The symmetrical component transformation operation converts the downstream current into a downstream component current, and the clock-direction conversion operation removes the upstream-downstream phase difference in the downstream component current. The upstream carbon emission factor and the upstream net transmission power are fused to obtain the carbon emission amount, where the upstream net transmission power is obtained by fusing the upstream voltage and upstream current. Based on the ratio of the carbon emission amount to the upstream net transmission power, the downstream carbon emission factor corresponding to the downstream distribution network is determined. This enables physically consistent conversion based on the node power tracking principle and ensures interface carbon conservation under zero-sequence blocking conditions on the delta-connected winding side. When the upstream carbon emission factors are equal, this mechanism automatically degenerates into scalar inheritance, with both cases sharing the same calculation logic. Compared to the scalar carbon interface, this avoids numerical distortion of the downstream carbon emission factor.

[0031] In the embodiments of this application, transformer loss data, rated current and downstream carbon emission factors are fused to obtain carbon loss data. This allows the carbon loss data corresponding to the losses of transformers at each level of interface to be explicitly measured as independent loss carbon accounts, maintaining a clear boundary of responsibility between source-injected carbon, network line loss carbon and transformer loss carbon.

[0032] In the embodiments of this application, downstream current, downstream voltage, and downstream carbon emission factors are fused to obtain cyclic carbon emission data. Specifically, the zero-sequence component of the three-phase current of the source node of the downstream network is determined based on the downstream current to determine the cyclic carbon emission data, and the carbon emission responsibility transfer amount at the lower boundary of the relative ground diameter and the lower boundary of the winding port diameter is calculated. Based on the cyclic carbon emission data, the carbon emission responsibility transfer amount at the lower boundary of the relative ground diameter, and the carbon emission responsibility transfer amount at the lower boundary of the winding port diameter, the carbon emission difference between the relative ground diameter and the transformer winding port diameter of the lower-level network can be analyzed. This allows for cross-diameter conservation verification while maintaining a clear carbon responsibility boundary.

[0033] In the embodiments of this application, when the upstream net transmission power is less than a preset power threshold, a reverse carbon emission factor corresponding to the reverse transmission power is obtained; based on the reverse carbon emission factor and the reverse transmission power, the upstream carbon emission factor is updated to obtain an updated upstream carbon emission factor; based on the updated upstream carbon emission factor, the reverse transmission power is updated to obtain an updated reverse transmission power and an updated reverse carbon emission factor corresponding to the updated reverse transmission power; when the updated reverse carbon emission factor meets a preset condition, the updated reverse carbon emission factor is determined as the downstream carbon emission factor. This can construct a fixed-point iteration mechanism for the reverse carbon emission factor, so that the carbon attribute of the reverse transmission power is determined by its true source, while reflecting its reverse influence on the carbon emission factor of the upper-level network node, thus making it suitable for bidirectional power flow scenarios.

[0034] Figure 1 The illustration shows an application scenario diagram of a data processing method, apparatus, device, medium, and program product for a power distribution network according to embodiments of this application.

[0035] like Figure 1 As shown, application scenario 100 according to this embodiment may include terminal device 101, power distribution network architecture 102, and network 103. Network 103 is used as a medium to provide a communication link between terminal device 101 and power distribution network architecture 102. Network 103 may include various connection types, such as wired or wireless communication links or fiber optic cables, etc.

[0036] The power distribution network architecture 102 includes an upstream power distribution network, a transformer, and a downstream power distribution network. The transformer is connected to both the upstream and downstream power distribution networks. The power distribution network architecture 102 also includes a processor for acquiring and processing the downstream current and downstream voltage provided between the transformer and the downstream power distribution network, the upstream voltage and upstream carbon emission factor provided between the transformer and the upstream power distribution network, and the transformer loss data and rated current of the transformer.

[0037] Users can use terminal device 101 to interact with the power distribution network architecture 102 via network 103 to receive or send messages, etc. Various communication client applications can be installed on terminal device 101, such as shopping applications, web browser applications, search applications, instant messaging tools, email clients, social platform software, etc. (for example only).

[0038] Terminal device 101 can be various electronic devices with a display screen and support web browsing, including but not limited to smartphones, tablets, laptops, and desktop computers.

[0039] It should be noted that the data processing method for power distribution networks provided in this application embodiment can generally be executed by the power distribution network architecture 102. Correspondingly, the data processing device for power distribution networks provided in this application embodiment can generally be located within the power distribution network architecture 102. The data processing method for power distribution networks provided in this application embodiment can also be executed by a server or server cluster that is different from the power distribution network architecture 102 and capable of communicating with the terminal device 101 and / or the power distribution network architecture 102. Correspondingly, the data processing device for power distribution networks provided in this application embodiment can also be located within a server or server cluster that is different from the power distribution network architecture 102 and capable of communicating with the terminal device 101 and / or the power distribution network architecture 102.

[0040] The following will be based on Figure 1 The described scenario provides a detailed description of the data processing method for power distribution networks according to embodiments of this application.

[0041] Figure 2 A flowchart of a data processing method for a power distribution network according to an embodiment of this application is shown.

[0042] like Figure 2 As shown, the data processing method for a power distribution network in this embodiment includes operations S210 to S260.

[0043] In operation S210, downstream current and downstream voltage provided between the transformer and the downstream distribution network, upstream voltage and upstream carbon emission factor provided between the transformer and the upstream distribution network, and transformer loss data and rated current of the transformer are obtained. The transformer loss data includes copper loss data and iron loss data.

[0044] In operation S220, a symmetrical component transformation operation and a clock direction conversion operation are performed on the downstream current to obtain the upstream current between the transformer and the upstream distribution network. The symmetrical component transformation operation is used to convert the downstream current into the downstream component current, and the clock direction conversion operation is used to remove the upstream and downstream phase difference in the downstream component current.

[0045] In operation S230, the upstream carbon emission factor and the upstream net transmission power are fused to obtain the carbon emission amount. The upstream net transmission power is obtained by fusing the upstream voltage and the upstream current.

[0046] In operation S240, the downstream carbon emission factor corresponding to the downstream distribution network is determined based on the ratio of carbon emissions to upstream net transmission power.

[0047] In operation S250, transformer loss data, rated current, and downstream carbon emission factors are fused to obtain carbon loss data.

[0048] In operation S260, downstream current, downstream voltage and downstream carbon emission factor are fused to obtain cyclic carbon emission data, and carbon emission amount, downstream carbon emission factor, carbon loss data and cyclic carbon emission data are pushed to the terminal.

[0049] The transformer interface connects the upstream and downstream networks, with the higher voltage side at the interface featuring a delta-connected winding. Phases are uniformly configured using... This can be expressed as follows: The downstream current and downstream voltage supplied between the transformer and the downstream distribution network can be expressed as... and (with phase) The corresponding downstream current and downstream voltage); the upstream voltage and upstream carbon emission factor provided between the transformer and the upstream distribution network can be expressed as: and (with phase) (Corresponding upstream voltage and upstream carbon emission factor).

[0050] Transformer loss data can include copper loss data and iron loss data, which can be represented as follows: and .

[0051] The rated current of a transformer can be expressed as: .

[0052] Symmetrical component transformation is used to convert downstream current into downstream component current. Specifically, it can decompose unbalanced three-phase current into positive-sequence, negative-sequence, and zero-sequence components, that is, convert downstream current into downstream component current including positive-sequence, negative-sequence, and zero-sequence components.

[0053] The clock direction conversion operation is used to remove the upstream and downstream phase difference in the downstream component current. Specifically, it can be converted according to the positive and negative sequence phase shift angles corresponding to the wiring group to obtain the three-phase line current on the voltage side where the delta winding of the interface is located.

[0054] The upstream current between the transformer and the upstream distribution network is obtained by performing a symmetrical component transformation operation and a clock direction conversion operation on the downstream current. This can be done by first performing a symmetrical component transformation operation on the downstream current to convert it into a downstream component current, and then performing a clock direction conversion operation on the downstream component current to obtain the upstream current between the transformer and the upstream distribution network.

[0055] The upstream current can include the current corresponding to the three windings, such as the three windings AB, BC, and CA. Taking the AB winding as an example, the winding current reference direction is from end a to end b. End a and end b can be phase a and phase b associated with the upstream. Phase a and phase b can also be referred to as current path a and current path b.

[0056] After obtaining the upstream current, the upstream voltage and upstream current are combined, which can be done by multiplying the upstream voltage and upstream current to obtain the upstream net transmission power. Different windings correspond to different upstream net transmission powers.

[0057] After obtaining the upstream net transmission power, the upstream carbon emission factor and the upstream net transmission power can be fused together, which can be done by multiplying the upstream carbon emission factor and the upstream net transmission power to obtain the carbon emission amount.

[0058] After obtaining the carbon emissions, and if the carbon emissions are greater than the preset power threshold, the downstream carbon emission factor corresponding to the downstream distribution network is determined based on the ratio of carbon emissions to upstream net transmission power. For example, winding AB corresponds to downstream phase a, winding BC corresponds to downstream phase b, and winding CA corresponds to downstream phase c. That is, based on the ratio of carbon emissions corresponding to winding AB to upstream net transmission power, the downstream carbon emission factor corresponding to downstream phase a can be obtained.

[0059] By integrating transformer loss data, rated current, and downstream carbon emission factors, the total active power loss can be determined based on transformer copper loss data and iron loss data, and then allocated to each phase according to the three-phase current amplitude ratio of the downstream network source node; the carbon loss data can be obtained by multiplying the power loss of each phase by the corresponding boundary carbon emission factor.

[0060] By fusing downstream current, downstream voltage, and downstream carbon emission factors, cyclic carbon emission data can be obtained. Alternatively, the downstream current, downstream voltage, and downstream carbon emission factors can be multiplied together to obtain cyclic carbon emission data.

[0061] After obtaining carbon emissions, downstream carbon emission factors, carbon loss data, and cycle carbon emission data, the data are pushed to the end user.

[0062] Specifically, downstream current include The zero-sequence component of the three-phase current at the source node of the downstream network can be Downstream carbon emission factors can be .

[0063] Multiplying the downstream current, downstream voltage, and downstream carbon emission factor yields the cyclic carbon emission data, which can be expressed as follows: Among them, if the three-phase currents are balanced, If the downstream voltage has no zero-sequence component and the downstream carbon emission factors are equal, then... Under normal three-phase unbalanced conditions It can be positive, negative, or zero.

[0064] In some embodiments, the relative lower boundary carbon emission responsibility transfer amount can also be obtained based on a method similar to that used in calculating cyclic carbon emission data. , can be represented as Among them, the carbon emission responsibility transfer amount at the lower boundary of the winding port diameter is respectively , can be represented as .

[0065] As a basis for cross-caliber conservation verification, Consistent with carbon emissions.

[0066] The aforementioned lower boundary carbon emission responsibility transfer amount and winding port lower boundary carbon emission responsibility transfer amount can be pushed to the terminal along with the aforementioned carbon emission amount, downstream carbon emission factor, carbon loss data and cycle carbon emission data.

[0067] In some embodiments, when multiple voltage levels are cascaded, the first The downstream carbon emission factor of the first-level interface is the first-level interface. The upstream carbon emission factor of the voltage level interface can be used to cover distribution networks with any number of cascaded voltage levels without the need for additional multi-level joint modeling.

[0068] According to embodiments of this application, by performing symmetrical component transformation and clock-direction conversion operations on the downstream current, the upstream current between the transformer and the upstream distribution network is obtained. The upstream net transmission power is obtained by fusing the upstream voltage and upstream current. Furthermore, the carbon emission amount is obtained by fusing the upstream carbon emission factor and the upstream net transmission power. This enables phase-by-phase physical consistency conversion of carbon information at the interface and ensures carbon conservation at the interface under zero-sequence blocking conditions on the delta-connected winding side of the transformer, based on the symmetrical component transformation and clock-direction conversion operations. Further, the downstream carbon emission factor corresponding to the downstream distribution network is determined based on the ratio of carbon emissions to the upstream net transmission power. Carbon loss data is obtained by fusing transformer loss data, rated current, and downstream carbon emission factor, allowing the carbon loss data corresponding to transformer losses to be explicitly measured as an independent loss carbon account. Cyclic carbon emission data is obtained by fusing downstream current, downstream voltage, and downstream carbon emission factor. The above operations only involve acquiring the downstream current and voltage provided by the transformer and the downstream distribution network, the upstream voltage and upstream carbon emission factor between the transformer and the upstream distribution network, and the transformer loss data and rated current of the transformer. It does not require acquiring or processing the internal topology, load and distributed power source data of the upstream and downstream networks, which can reduce data processing costs.

[0069] According to an embodiment of this application, a symmetrical component transformation operation and a clock direction conversion operation are performed on the downstream current to obtain the upstream current between the transformer interface and the upstream distribution network. This includes: fusing the vector current composed of the downstream current with the symmetrical component transformation matrix to obtain the downstream component current, which includes positive sequence component current, negative sequence component current, and zero sequence component current; based on the conversion coefficients corresponding to the positive sequence component current, negative sequence component current, and zero sequence component current, fusing the power ratio of the two interfaces of the transformer with the positive sequence component current, negative sequence component current, and zero sequence component current respectively to obtain the first target phase current corresponding to the first current channel, the second target phase current corresponding to the second current channel, and the third target phase current corresponding to the third current channel; and performing a current inverse operation on the first target phase current, the second target phase current, and the third target phase current to obtain the upstream current.

[0070] The component current consisting of the downstream current can be expressed as ,in, These correspond to phases a, b, and c (current channels a, b, and c), respectively.

[0071] A vector current consisting of downstream currents can be formed by... Composition .

[0072] The symmetric component transformation matrix A can be represented as ,in, These are preset coefficients.

[0073] By fusing the vector current composed of downstream currents with the transformation matrix of the symmetric component, the downstream component current is obtained, which can be expressed as: ,in, This is the downstream component current.

[0074] Downstream component current This includes positive-sequence current, negative-sequence current, and zero-sequence current, i.e. , And 0.

[0075] The phase sequence mentioned above adopts the abc positive phase sequence, and the current reference direction is positive with the current flowing into the transformer winding. The embodiment of this application adopts the clock representation method, and the downstream positive sequence voltage phasor leads the upstream positive sequence voltage phasor by 30°. Based on this, the conversion direction is determined, that is, the conversion coefficient corresponding to the positive sequence component current, the negative sequence component current and the zero sequence component current.

[0076] The conversion factor corresponding to the positive sequence component current can be The conversion factor corresponding to the negative sequence component current can be The conversion factor corresponding to the zero-sequence component current can be 0.

[0077] The power ratio of the two terminals of a transformer can be expressed as: .

[0078] Based on the conversion factors corresponding to the positive-sequence current, negative-sequence current and zero-sequence current respectively, the power ratio of the two interfaces of the transformer is fused with the positive-sequence current, negative-sequence current and zero-sequence current respectively to obtain the first target phase current corresponding to the first current channel, the second target phase current corresponding to the second current channel and the third target phase current corresponding to the third current channel. This can be achieved by multiplying the conversion factor corresponding to the positive-sequence current, the power ratio of the two interfaces of the transformer and the positive-sequence current, multiplying the conversion factor corresponding to the negative-sequence current, the power ratio of the two interfaces of the transformer and the negative-sequence current, and multiplying the conversion factor corresponding to the zero-sequence current, as shown in formula (1).

[0079] (1);

[0080] in, For the first target phase current, For the second target phase current, This is the third target phase current.

[0081] Performing a symmetrical component transformation operation on the downstream current can be a process of transforming the downstream current into a single component. The vector formed Multiplying the transformation matrix A with the symmetric component matrix yields the upstream target phase current vector. (i.e., downstream component current) ), represented as ,in Depend on , , Composition, Correspondence Depend on , , The components correspond to the first target phase current, the second target phase current, and the third target phase current, respectively.

[0082] Performing a current inversion operation on the first target phase current, the second target phase current, and the third target phase current to obtain the upstream current can be achieved by inverting the first target phase current, the second target phase current, and the third target phase current into currents corresponding to the three windings, and then determining the currents corresponding to the three windings as the upstream currents.

[0083] According to the embodiments of this application, the downstream current performs symmetrical component transformation and clock direction conversion operations, which can decompose the asymmetrical three-phase current into three independent symmetrical components: positive sequence, negative sequence, and zero sequence. This allows the positive and negative sequences to be processed separately, the zero sequence to be identified and blocked separately, and the phase difference and turns ratio difference caused by different wiring groups on both sides of the transformer to be uniformly corrected, so that the downstream current calculated from the downstream can be aligned with the upstream current in terms of phase and amplitude.

[0084] According to embodiments of this application, an inverse current operation is performed on the first target phase current, the second target phase current, and the third target phase current to obtain the upstream current, including: determining a first winding current based on the difference between the target phase current corresponding to the first current channel and the target phase current corresponding to the second current channel, wherein the first winding current represents the current between the first current channel and the second current channel; determining a second winding current based on the difference between the target phase current corresponding to the second current channel and the target phase current corresponding to the third current channel, wherein the second winding current represents the current between the second current channel and the third current channel; determining a third winding current based on the difference between the target phase current corresponding to the third current channel and the target phase current corresponding to the first current channel, wherein the third winding current represents the current between the third current channel and the first current channel; and determining the upstream current based on the first winding current, the second winding current, and the third winding current.

[0085] The first current path corresponding to the first target phase current can be phase a mentioned above.

[0086] The second current path corresponding to the second target phase current can be phase b as described above.

[0087] The third current path corresponding to the third target phase current can be the aforementioned phase c.

[0088] The first winding current is determined based on the difference between the first target phase current and the second target phase current. Specifically, the first winding current... It can be represented as .

[0089] The second winding current is determined based on the difference between the second target phase current and the third target phase current. Specifically, the second winding current... It can be represented as .

[0090] The third winding current is determined based on the difference between the third target phase current and the first target phase current. Specifically, the third winding current... It can be represented as .

[0091] After obtaining the currents of the first winding, the second winding, and the third winding, the currents of the first winding, the second winding, and the third winding are determined as the upstream currents.

[0092] According to an embodiment of this application, by performing a current inverse operation on the first target phase current, the second target phase current, and the third target phase current, they are converted into internally analyzable first winding current, second winding current, and third winding current, which facilitates the subsequent calculation of downstream carbon emission factors.

[0093] According to an embodiment of this application, the first upstream net transmission power is determined based on the following operations: the first upstream voltage and the first winding current are combined to obtain the first transmission power; the second upstream voltage and the first winding current are combined to obtain the second transmission power; and the first transmission power and the second transmission power are combined to obtain the first upstream net transmission power.

[0094] The upstream voltage includes: the first upstream voltage corresponding to the first current channel, which can be expressed as: The second upstream voltage corresponding to the second current channel can be expressed as: The third upstream voltage corresponding to the third current channel can be expressed as: .

[0095] The upstream net transmission power includes the first upstream net transmission power corresponding to the first winding current, the second upstream net transmission power corresponding to the second winding current, and the third upstream net transmission power corresponding to the third winding current.

[0096] The first transmitted power is obtained by combining the first upstream voltage and the first winding current, or by multiplying the first upstream voltage and the first winding current. Specifically, the first transmitted power... It can be represented as .

[0097] The first transmission power is the transmission power corresponding to the first current channel.

[0098] The second transmitted power is obtained by combining the second upstream voltage and the first winding current. Alternatively, the second transmitted power can be obtained by multiplying the second upstream voltage and the first winding current. Specifically, the second transmitted power... It can be represented as .

[0099] The second transmission power is the transmission power corresponding to the second current channel.

[0100] The first upstream net transmission power is obtained by fusing the first transmission power and the second transmission power, or by adding the first transmission power and the second transmission power together. It can be represented as .

[0101] The second upstream net transmission power corresponding to the second winding current and the third upstream net transmission power corresponding to the third winding current are obtained in a similar way to the first upstream net transmission power, based on the above operations, and will not be repeated here.

[0102] According to the embodiments of this application, a first transmission power is obtained by fusing the first upstream voltage and the first winding current; a second transmission power is obtained by fusing the second upstream voltage and the first winding current, which can clearly define the power direction and adapt to bidirectional power flow.

[0103] According to an embodiment of this application, the first target carbon emission amount is determined based on the following operations: fusing a first transmission power and a first carbon emission factor to obtain a first carbon emission amount; fusing a second transmission power and a second carbon emission factor to obtain a second carbon emission amount; and fusing the first carbon emission amount and the second carbon emission amount to obtain the first target carbon emission amount.

[0104] The carbon emissions include a first target carbon emission corresponding to the first winding current, a second target carbon emission corresponding to the second winding current, and a third target carbon emission corresponding to the third winding current.

[0105] The upstream carbon emission factor, including the first carbon emission factor corresponding to the first current channel, can be expressed as: The second carbon emission factor corresponding to the second current channel can be expressed as: The third carbon emission factor corresponding to the third current channel can be expressed as: .

[0106] The first carbon emission amount can be obtained by fusing the first transmission power and the first carbon emission factor, or by multiplying the first transmission power and the first carbon emission factor. The first carbon emission amount can be expressed as follows: .

[0107] The second carbon emission amount is obtained by fusing the second transmission power and the second carbon emission factor. Alternatively, it can be obtained by multiplying the second transmission power and the second carbon emission factor. The second carbon emission amount can be expressed as follows: .

[0108] The first target carbon emission is obtained by combining the first and second carbon emissions, or by adding the first and second carbon emissions together. It can be represented as .

[0109] The second target carbon emissions corresponding to the second winding current and the third target carbon emissions corresponding to the third winding current are obtained in a similar way to the first target carbon emissions, based on the above operations, and will not be repeated here.

[0110] According to an embodiment of this application, the first downstream carbon emission factor is determined based on the following operation: the first downstream carbon emission factor is determined based on the ratio of the first target carbon emission amount to the first upstream net transmission power.

[0111] The downstream carbon emission factor includes the first downstream carbon emission factor corresponding to the first winding current, the second downstream carbon emission factor corresponding to the second winding current, and the third downstream carbon emission factor corresponding to the third winding current.

[0112] The first downstream carbon emission factor is determined based on the ratio of the first target carbon emissions to the first upstream net transmission power, and can be expressed as follows: ,in, It is the primary downstream carbon emission factor.

[0113] The second downstream carbon emission factor corresponding to the second winding current and the third downstream carbon emission factor corresponding to the third winding current are obtained in a similar way to the first downstream carbon emission factor, based on the above operations, and will not be elaborated here.

[0114] The sum of the first target carbon emissions corresponding to the first winding current, the second target carbon emissions corresponding to the second winding current, and the third target carbon emissions corresponding to the third winding current always satisfies the interface carbon conservation, as shown in formula (2).

[0115] (2);

[0116] in, This represents the sum of the first target carbon emissions corresponding to the first winding current, the second target carbon emissions corresponding to the second winding current, and the third target carbon emissions corresponding to the third winding current; For upstream carbon emission factors ( , and ); for , and .

[0117] when , and Equal, always ,Right now Downstream carbon emission factor = upstream carbon emission factor.

[0118] According to an embodiment of this application, a first downstream carbon emission factor can be determined based on the ratio of a first target carbon emission amount to a first upstream net transmission power. When the upstream carbon emission factor is equal to that of multiple current channels, it can automatically degenerate into scalar inheritance, thus avoiding distortion of the downstream carbon emission factor value compared to a scalar carbon interface.

[0119] According to an embodiment of this application, determining the downstream carbon emission factor corresponding to the downstream distribution network based on the ratio of carbon emissions to upstream net transmission power further includes: when the upstream net transmission power is less than a preset power threshold, the downstream carbon emission factor is determined based on the following operations: obtaining the reverse carbon emission factor corresponding to the reverse transmission power; updating the upstream carbon emission factor based on the reverse carbon emission factor and the reverse transmission power to obtain an updated upstream carbon emission factor; updating the reverse transmission power based on the updated upstream carbon emission factor to obtain an updated reverse transmission power and an updated reverse carbon emission factor corresponding to the updated reverse transmission power; and determining the updated reverse carbon emission factor as the downstream carbon emission factor when the updated reverse carbon emission factor meets preset conditions.

[0120] When the upstream net transmission power is less than a preset power threshold, or when the upstream net transmission power is negative, the reverse carbon emission factor corresponding to the reverse transmission power can be obtained. , The initial value can be taken from the upstream carbon emission factor, the known downstream carbon emission factor, or a preset value.

[0121] Define fixed-point mapping In the given Under these conditions, the reverse power and the corresponding reverse carbon emission factor are regarded as distributed power injected into the upstream network, and an updated upstream carbon emission factor is obtained.

[0122] Based on the updated upstream carbon emission factor, the upstream carbon emission factor is replaced, and operations S220 to S240 are performed based on the updated upstream carbon emission factor to obtain candidate values ​​associated with the downstream carbon emission factor. Based on these candidate values ​​associated with the downstream carbon emission factor, the updated reverse transmission power and the updated reverse carbon emission factor corresponding to the updated reverse transmission power are derived. .

[0123] Preset conditions can be , This is a preset threshold.

[0124] After the iteration stops, the updated reverse carbon emission factor is determined as the downstream carbon emission factor.

[0125] In some embodiments, the preset conditions may also include a maximum change threshold associated with the updated upstream carbon emission factor.

[0126] According to the embodiments of this application, when the upstream net transmission power is less than a preset power threshold, a fixed-point iterative mechanism for the reverse transmission carbon emission factor is constructed to address the power backfeed caused by the high penetration of distributed power sources in the downstream network. This mechanism ensures that the carbon attribute of the reverse transmission power is determined by its true source and reflects its reverse impact on the upstream carbon emission factor, thus making it suitable for bidirectional power flow scenarios.

[0127] According to an embodiment of this application, carbon loss data is obtained by fusing transformer loss data, rated current, and downstream carbon emission factors, including: fusing the ratio between rated current and downstream current and transformer loss data to obtain transformer loss power; and fusing transformer loss power and downstream carbon emission factors to obtain carbon loss data.

[0128] The transformer loss power is obtained by fusing the ratio between the rated current and the downstream current and the transformer loss data. This can be achieved by multiplying the ratio between the rated current and the downstream current and the transformer loss data, as shown in formula (3).

[0129] (3);

[0130] in, To match copper consumption data Associated transformer loss power ( Data on copper loss for the p phase (related transformer loss power). Data on iron loss for the p phase Related transformer loss power, This can be the rated copper loss or the transformer power loss. It can be . Rated current, This is the downstream current.

[0131] Carbon loss data can be obtained by fusing transformer power loss and downstream carbon emission factors. Alternatively, carbon loss data can be obtained by multiplying transformer power loss and downstream carbon emission factors. It can be represented as .

[0132] According to embodiments of this application, the ratio between the rated current and the downstream current, along with transformer loss data, is fused to obtain transformer loss power. This allows the introduction of a zero-sequence cyclic carbon emission responsibility independent account, i.e., carbon loss data, to explain and bridge the carbon difference between the relative ground diameter of the lower-level network and the transformer winding port diameter. This enables cross-diameter conservation verification while maintaining a clear boundary of transformer carbon responsibility.

[0133] To verify the effectiveness of the method in this application, two transformer interface examples are constructed to verify two scenarios: forward transmission (including the general case of winding port mapping, independent metering of transformer loss carbon, and zero-sequence cyclic carbon emission responsibility account) and reverse transmission (power backfeed fixed point iteration). The inputs required for the examples are only the boundary electrical quantities on both sides of the transformer interface and the transformer's own parameters: the following boundary electrical quantities are taken from the actual output results of the IEEE34–IEEE13–CIGRE commercial feeder three-level cascade example after one power flow and carbon tracking calculation.

[0134] Scenario 1: Forward transmission interface, checking the general case of winding port mapping.

[0135] Transformer parameters: Rated capacity 5000kVA, voltage 24.9kV / 4.16kV, short-circuit impedance voltage 6.0%, rated copper loss 50kW, rated iron loss 0kW, Dyn11 connection (clock=11).

[0136] Table 1 Boundary Input Variables for Scenario 1

[0137] variable a phase phase b c phase Upstream voltage (pu) 1.018759∠-0.16° 1.029655∠-120.37° 1.029858∠119.76° Upstream carbon emission factor (kg CO2 / kWh) 0.441816 0.585157 0.800294 Downstream voltage (pu) 1.025282∠29.91° 1.029108∠-90.30° 1.023886∠149.62° Downstream current (pu) 0.249989∠-1.56° 0.192932∠-116.68° 0.269489∠120.83°

[0138] As shown in Table 1, the upstream carbon emission factors are not equal.

[0139] Table 2 Winding Decomposition Results for Scenario 1

[0140] winding Corresponding downstream phase (kW) (kW) (kW) (kg / h) <![CDATA[ (kgCO2 / kWh)]]> AB a 710.445050 300.825104 1011.270153 489.915869 0.484456 BC b 629.543171 349.639592 979.182764 648.196271 0.661977 CA c 768.471282 432.539777 1201.011059 806.105701 0.671189

[0141] As shown in Table 2, the carbon emission factors (0.484456 / 0.661977 / 0.671189) of the three windings are different from each other, which illustrates the necessity of designing cross-voltage level interfaces when calculating the carbon emission responsibility for electricity consumption.

[0142] Transformer losses: The three-phase winding power losses are 1.041571 kW / 0.620382 / 1.210403 kW, respectively, and the corresponding carbon losses are 0.504595 / 0.410678 / 0.812410 kg / h.

[0143] Interface carbon conservation accounting: kg / h, kg / h, relative error To achieve machine precision.

[0144] Zero-sequence cyclic carbon emission responsibility account accounting: zero-sequence current of downstream network source nodes (pu), kg / h; kg / h, kg / h, and (1944.217842 kg / h) relative error The result shows that the zero-sequence cyclic carbon emission responsibility phenomenon does not only occur in four-wire downstream networks with a physical neutral line—in this scenario, the downstream network (medium-voltage layer) itself does not contain a neutral line, but its source node boundary current still has a non-zero zero-sequence component due to phase-by-phase unbalanced load, which also needs to bridge the carbon difference between the relative ground diameter and the winding port diameter through this account.

[0145] Scenario 2: Reverse transmission interface, verifying fixed-point iterative convergence

[0146] Transformer parameters: rated capacity 300kVA, voltage 4.16kV / 0.4kV, short-circuit impedance voltage 4.1155%, Dyn11 connection. Downstream network source nodes b and c phases experience reverse transmission due to the net output of distributed power sources, while a phase remains in the forward direction.

[0147] Boundary input (after convergence): Upstream carbon emission factor = 0.475021、 = 0 (phase b is in the reverse state and does not have a boundary value in the positive sense). 0.670771 kg CO2 / kWh; downstream current: 0.081014∠32.96°, b: 0.042196∠175.86°, c: 0.057721∠37.27°.

[0148] Table 3. Fixed-point iterative convergence process in the reverse feed scenario

[0149] round <![CDATA[b inverse carbon emission factor (kg CO2 / kWh)]]> <![CDATA[c reverse carbon emission factor (kg CO2 / kWh)]]> 1 0.122409 0.350000 2 0.122409 0.350000

[0150] As shown in Table 3, convergence occurs after two iterations, with the change in adjacent iterations being less than the preset threshold. b) The reverse carbon emission factor converges to 0.122409 kg CO2 / kWh, and c) The reverse carbon emission factor precisely converges to 0.350000 kg CO2 / kWh. Both are obtained independently from fixed-point iterations and calls to the downstream network carbon tracking module, are distinct, and neither is equal to the upstream carbon emission factor (0.475021 / 0.670771) or a simple preset value (such as zero). This verifies that this application can still provide a correct and stable convergence solution for the reverse carbon emission attribute without depending on the specific internal structure of the downstream network.

[0151] Table 4. Winding decomposition results after convergence in the reverse feeding scenario

[0152]

[0153] As shown in Table 4, the net carbon content of the interface is closed: total carbon content of the positive winding. kg / h, total carbon content of reverse winding (absolute value) kg / h, Net carbon content at the interface kg / h, and The kg / h accuracy was consistent, verifying the closed-loop relationship of the total carbon content at the interface in a mixed scenario of forward and reverse windings.

[0154] In summary, both scenarios, under the condition of only giving the electrical quantities at both sides of the transformer interface and the transformer's own parameters, and without relying on the internal topology of the upstream and downstream networks, achieved strict conservation of carbon quantity at the winding port and carbon quantity of the upstream three-phase power (the relative error in scenario one reached machine accuracy). It also verified the bridging effect of the zero-sequence cyclic carbon emission responsibility account on the difference between the relative ground diameter and the winding port diameter, as well as the fast and stable convergence of fixed-point iteration in the reverse transmission scenario. This shows that the method in this application can completely realize the physical consistency of carbon emission responsibility across voltage levels under the condition of only processing the interface boundary quantities, providing a basis for the carbon emission responsibility accounting of electricity consumption in multi-voltage level distribution networks.

[0155] Based on the above-described data processing method for power distribution networks, this application also provides a data processing apparatus for power distribution networks. The following will be combined with... Figure 3 The device is described in detail.

[0156] Figure 3 A structural block diagram of a data processing apparatus for a power distribution network according to an embodiment of this application is shown.

[0157] like Figure 3As shown, the data processing device 300 for power distribution networks in this embodiment includes a first acquisition module 310, a first execution module 320, a first fusion module 330, a first determination module 340, a second fusion module 350, and a third fusion module 360.

[0158] The first acquisition module 310 is used to acquire the downstream current and downstream voltage provided between the transformer and the downstream distribution network, the upstream voltage and upstream carbon emission factor provided between the transformer and the upstream distribution network, and the transformer loss data and rated current of the transformer. The transformer loss data includes copper loss data and iron loss data. In one embodiment, the first acquisition module 310 can be used to perform the operation S210 described above, which will not be repeated here.

[0159] The first execution module 320 is used to perform a symmetrical component transformation operation and a clock direction conversion operation on the downstream current to obtain the upstream current between the transformer and the upstream distribution network. The symmetrical component transformation operation converts the downstream current into a downstream component current, and the clock direction conversion operation removes the upstream-downstream phase difference from the downstream component current. In one embodiment, the first execution module 320 can be used to execute the operation S220 described above, which will not be repeated here.

[0160] The first fusion module 330 is used to fuse the upstream carbon emission factor and the upstream net transmission power to obtain the carbon emission amount, wherein the upstream net transmission power is obtained by fusing the upstream voltage and the upstream current. In one embodiment, the first fusion module 330 can be used to perform the operation S230 described above, which will not be repeated here.

[0161] The first determining module 340 is used to determine the downstream carbon emission factor corresponding to the downstream power distribution network based on the ratio of carbon emissions to upstream net transmission power. In one embodiment, the first determining module 340 can be used to perform the operation S240 described above, which will not be repeated here.

[0162] The second fusion module 350 is used to fuse transformer loss data, rated current, and downstream carbon emission factors to obtain carbon loss data. In one embodiment, the second fusion module 350 can be used to perform the operation S250 described above, which will not be repeated here.

[0163] The third fusion module 360 ​​is used to fuse downstream current, downstream voltage, and downstream carbon emission factors to obtain cyclic carbon emission data, and pushes carbon emission amount, downstream carbon emission factor, carbon loss data, and cyclic carbon emission data to the terminal. In one embodiment, the third fusion module 360 ​​can be used to perform the operation S260 described above, which will not be repeated here.

[0164] According to embodiments of this application, by performing symmetrical component transformation and clock-direction conversion operations on the downstream current, the upstream current between the transformer and the upstream distribution network is obtained. The upstream net transmission power is obtained by fusing the upstream voltage and upstream current. Furthermore, the carbon emission amount is obtained by fusing the upstream carbon emission factor and the upstream net transmission power. This enables phase-by-phase physical consistency conversion of carbon information at the interface and ensures carbon conservation at the interface under zero-sequence blocking conditions on the delta-connected winding side of the transformer, based on the symmetrical component transformation and clock-direction conversion operations. Further, the downstream carbon emission factor corresponding to the downstream distribution network is determined based on the ratio of carbon emissions to the upstream net transmission power. Carbon loss data is obtained by fusing transformer loss data, rated current, and downstream carbon emission factor, allowing the carbon loss data corresponding to transformer losses to be explicitly measured as an independent loss carbon account. Cyclic carbon emission data is obtained by fusing downstream current, downstream voltage, and downstream carbon emission factor. The above operations only involve acquiring the downstream current and voltage provided by the transformer and the downstream distribution network, the upstream voltage and upstream carbon emission factor between the transformer and the upstream distribution network, as well as the transformer's loss data and rated current. It does not require acquiring or processing the internal topology, load, and distributed power source data of the upstream and downstream networks, which can reduce data processing costs.

[0165] According to an embodiment of this application, the first execution module 320 includes a first fusion submodule, a second fusion submodule, and a first execution submodule.

[0166] The first fusion submodule is used to fuse the vector current composed of downstream currents with the symmetric component transformation matrix to obtain the downstream component current, which includes positive sequence component current, negative sequence component current and zero sequence component current.

[0167] The second fusion submodule is used to fuse the power ratio of the two interfaces of the transformer with the positive-sequence current, negative-sequence current and zero-sequence current respectively, based on the conversion coefficients corresponding to the positive-sequence current, negative-sequence current and zero-sequence current, to obtain the target positive-sequence current, target negative-sequence current and target zero-sequence current.

[0168] The first execution submodule is used to perform current inversion operation on the target positive sequence current, target negative sequence current and target zero sequence current to obtain the upstream current.

[0169] According to an embodiment of this application, the first execution submodule includes a first determining unit, a second determining unit, a third determining unit, and a fourth determining unit.

[0170] The first determining unit is used to determine the first winding current based on the difference between the target positive sequence component current and the target negative sequence component current. The first winding current represents the current between the first current channel corresponding to the target positive sequence component current and the second current channel corresponding to the target negative sequence component current.

[0171] The second determining unit is used to determine the second winding current based on the difference between the target negative sequence component current and the target zero sequence component current. The second winding current characterizes the current between the second current channel and the third current channel corresponding to the target zero sequence component current.

[0172] The third determining unit is used to determine the third winding current based on the difference between the target zero-sequence component current and the target positive-sequence component current. The third winding current characterizes the current between the third current channel and the first current channel.

[0173] The fourth determining unit is used to determine the upstream current based on the first winding current, the second winding current, and the third winding current.

[0174] According to an embodiment of this application, the first fusion module 330 includes a third fusion submodule, a fourth fusion submodule, and a fifth fusion submodule.

[0175] The third fusion submodule is used to fuse the first upstream voltage and the first winding current to obtain the first transmission power.

[0176] The fourth fusion submodule is used to fuse the second upstream voltage and the first winding current to obtain the second transmission power.

[0177] The fifth fusion submodule is used to fuse the first transmission power and the second transmission power to obtain the first upstream net transmission power.

[0178] According to an embodiment of this application, the first fusion module 330 includes a sixth fusion submodule, a seventh fusion submodule, and an eighth fusion submodule.

[0179] The sixth fusion submodule is used to fuse the first transmission power and the first carbon emission factor to obtain the first carbon emission amount.

[0180] The seventh fusion submodule is used to fuse the second transmission power and the second carbon emission factor to obtain the second carbon emission amount.

[0181] The eighth fusion submodule is used to fuse the first carbon emission and the second carbon emission to obtain the first target carbon emission.

[0182] According to an embodiment of this application, the first determining module 340 includes a first determining submodule.

[0183] The first determining submodule is used to determine the first downstream carbon emission factor based on the ratio of the first target carbon emissions to the first upstream net transmission power.

[0184] According to an embodiment of this application, the first determining module 340 includes a first obtaining submodule, a first updating submodule, a second updating submodule, and a second determining submodule.

[0185] The first acquisition submodule is used to acquire the reverse carbon emission factor corresponding to the reverse power.

[0186] The first update submodule is used to update the upstream carbon emission factor based on the reverse carbon emission factor and the reverse transmission power, so as to obtain the updated upstream carbon emission factor.

[0187] The second update submodule is used to update the reverse transmission power based on the updated upstream carbon emission factor, so as to obtain the updated reverse transmission power and the updated reverse carbon emission factor corresponding to the updated reverse transmission power.

[0188] The second determining submodule is used to determine the updated reverse carbon emission factor as the downstream carbon emission factor if the updated reverse carbon emission factor meets the preset conditions.

[0189] According to an embodiment of this application, the second fusion module 350 includes a first fusion submodule and a second fusion submodule.

[0190] The first fusion submodule is used to fuse the ratio between the rated current and the downstream current, as well as the transformer loss data, to obtain the transformer loss power.

[0191] The second fusion submodule is used to fuse transformer power loss and downstream carbon emission factors to obtain carbon loss data.

[0192] According to embodiments of this application, any plurality of modules among the first acquisition module 310, first execution module 320, first fusion module 330, first determination module 340, second fusion module 350, and third fusion module 360 ​​can be combined into one module, or any one of these modules can be split into multiple modules. Alternatively, at least part of the functionality of one or more of these modules can be combined with at least part of the functionality of other modules and implemented in one module. According to embodiments of this application, at least one of the first acquisition module 310, first execution module 320, first fusion module 330, first determination module 340, second fusion module 350, and third fusion module 360 ​​can be at least partially implemented as hardware circuitry, such as a field-programmable gate array (FPGA), a programmable logic array (PLA), a system-on-a-chip, a system-on-a-substrate, a system-on-package, an application-specific integrated circuit (ASIC), or implemented in hardware or firmware by any other reasonable means of integrating or packaging the circuitry, or implemented in any one of software, hardware, and firmware methods, or in a suitable combination of any of these methods. Alternatively, at least one of the first acquisition module 310, the first execution module 320, the first fusion module 330, the first determination module 340, the second fusion module 350, and the third fusion module 360 ​​may be implemented at least partially as a computer program module, which can perform corresponding functions when the computer program module is run.

[0193] Figure 4 A block diagram of an electronic device suitable for implementing a data processing method for a power distribution network, according to an embodiment of this application, is shown.

[0194] like Figure 4 As shown, an electronic device 400 according to an embodiment of this application includes a processor 401, which can perform various appropriate actions and processes according to a program stored in ROM 402 (Read-Only Memory) or a program loaded from storage portion 408 into RAM 403 (Random Access Memory). The processor 401 may include, for example, a general-purpose microprocessor (e.g., a CPU), an instruction set processor and / or an associated chipset and / or a special-purpose microprocessor (e.g., an application-specific integrated circuit (ASIC)), etc. The processor 401 may also include onboard memory for caching purposes. The processor 401 may include a single processing unit or multiple processing units for performing different actions of the method flow according to an embodiment of this application.

[0195] RAM 403 stores various programs and data required for the operation of electronic device 400. Processor 401, ROM 402, and RAM 403 are interconnected via bus 404. Processor 401 executes various operations of the method flow according to embodiments of this application by executing programs in ROM 402 and / or RAM 403. It should be noted that the programs may also be stored in one or more memories other than ROM 402 and RAM 403. Processor 401 may also execute various operations of the method flow according to embodiments of this application by executing programs stored in said one or more memories.

[0196] According to embodiments of this application, the electronic device 400 may further include an input / output (I / O) interface 405, which is also connected to a bus 404. The electronic device 400 may also include one or more of the following components connected to the input / output (I / O) interface 405: an input section 406 including a keyboard, mouse, etc.; an output section 407 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 408 including a hard disk, etc.; and a communication section 409 including a network interface card such as a LAN card, modem, etc. The communication section 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to the input / output (I / O) interface 405 as needed. A removable medium 411, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on the drive 410 as needed so that computer programs read from it can be installed into the storage section 408 as needed.

[0197] This application also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiments; or it may exist independently and not assembled into the device / apparatus / system. The computer-readable storage medium carries one or more programs, which, when executed, implement the method according to the embodiments of this application.

[0198] According to embodiments of this application, the computer-readable storage medium can be a non-volatile computer-readable storage medium, such as including but not limited to: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this application, the computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. For example, according to embodiments of this application, the computer-readable storage medium may include ROM 402 and / or RAM 403 and / or one or more memories other than ROM 402 and RAM 403 described above.

[0199] Embodiments of this application also include a computer program product comprising a computer program containing program code for performing the methods shown in the flowchart. When the computer program product is run on a computer system, the program code enables the computer system to implement the data processing method for power distribution networks provided in the embodiments of this application.

[0200] When the computer program is executed by the processor 401, it performs the functions defined in the system / apparatus of this application embodiment. According to the embodiments of this application, the systems, apparatuses, modules, units, etc., described above can be implemented by computer program modules.

[0201] In one embodiment, the computer program may rely on a tangible storage medium such as an optical storage device or a magnetic storage device. In another embodiment, the computer program may also be transmitted and distributed in the form of signals over a network medium, and downloaded and installed via communication section 409, and / or installed from removable medium 411. The program code contained in the computer program can be transmitted using any suitable network medium, including but not limited to: wireless, wired, etc., or any suitable combination thereof.

[0202] In such an embodiment, the computer program can be downloaded and installed from a network via communication section 409, and / or installed from removable medium 411. When the computer program is executed by processor 401, it performs the functions defined in the system of this application embodiment. According to embodiments of this application, the systems, devices, apparatuses, modules, units, etc., described above can be implemented by computer program modules.

[0203] According to embodiments of this application, program code for executing the computer programs provided in the embodiments of this application can be written in any combination of one or more programming languages. Specifically, these computational programs can be implemented using high-level procedural and / or object-oriented programming languages, and / or assembly / machine languages. Programming languages ​​include, but are not limited to, languages ​​such as Java, C++, Python, "C", or similar programming languages. The program code can be executed entirely on the user's computing device, partially on the user's device, partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0204] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0205] Those skilled in the art will understand that the features described in the various embodiments of this application can be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in this application. In particular, the features described in the various embodiments of this application can be combined and / or combined in various ways without departing from the spirit and teachings of this application. All such combinations and / or combinations fall within the scope of this application.

[0206] The embodiments of this application have been described above. However, these embodiments are merely illustrative and not intended to limit the scope of this application. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. Without departing from the scope of this application, those skilled in the art can make various substitutions and modifications, all of which should fall within the scope of this application.

Claims

1. A data processing method for power distribution networks, characterized in that, The method includes: The downstream current and downstream voltage provided between the transformer and the downstream distribution network, the upstream voltage and upstream carbon emission factor provided between the transformer and the upstream distribution network, and the transformer loss data and rated current of the transformer, wherein the transformer loss data includes copper loss data and iron loss data; A symmetrical component transformation operation and a clock direction conversion operation are performed on the downstream current to obtain the upstream current between the transformer and the upstream distribution network. The symmetrical component transformation operation is used to convert the downstream current into a downstream component current, and the clock direction conversion operation is used to remove the upstream and downstream phase difference in the downstream component current. The carbon emission amount is obtained by fusing the upstream carbon emission factor and the upstream net transmission power, wherein the upstream net transmission power is obtained by fusing the upstream voltage and the upstream current. The downstream carbon emission factor corresponding to the downstream power distribution network is determined based on the ratio of the carbon emissions to the upstream net transmission power. The transformer loss data, the rated current, and the downstream carbon emission factor are fused to obtain carbon loss data. The downstream current, the downstream voltage, and the downstream carbon emission factor are fused to obtain cyclic carbon emission data, and the carbon emission amount, the downstream carbon emission factor, the carbon loss data, and the cyclic carbon emission data are pushed to the terminal.

2. The method according to claim 1, characterized in that, The process of performing symmetrical component transformation and clock direction conversion on the downstream current to obtain the upstream current between the transformer interface and the upstream distribution network includes: The vector current composed of the downstream current is fused with the symmetric component transformation matrix to obtain the downstream component current, which includes positive sequence component current, negative sequence component current and zero sequence component current. Based on the conversion factors corresponding to the positive sequence current, the negative sequence current and the zero sequence current respectively, the power ratio of the two interfaces of the transformer is fused with the positive sequence current, the negative sequence current and the zero sequence current respectively to obtain the first target phase current corresponding to the first current channel, the second target phase current corresponding to the second current channel and the third target phase current corresponding to the third current channel. The upstream current is obtained by performing a current inverse operation on the first target phase current, the second target phase current, and the third target phase current.

3. The method according to claim 2, characterized in that, The step of performing a current inverse operation on the first target phase current, the second target phase current, and the third target phase current to obtain the upstream current includes: The first winding current is determined based on the difference between the first target phase current and the second target phase current, and the first winding current represents the current between the first current channel and the second current channel. The second winding current is determined based on the difference between the second target phase current and the third target phase current, and the second winding current characterizes the current between the second current channel and the third current channel; The third winding current is determined based on the difference between the third target phase current and the first target phase current, and the third winding current represents the current between the third current channel and the first current channel. The upstream current is determined based on the first winding current, the second winding current, and the third winding current.

4. The method according to claim 3, characterized in that, The upstream voltage includes a first upstream voltage corresponding to the first current channel, a second upstream voltage corresponding to the second current channel, and a third upstream voltage corresponding to the third current channel; the upstream net transmission power includes a first upstream net transmission power corresponding to the first winding current, a second upstream net transmission power corresponding to the second winding current, and a third upstream net transmission power corresponding to the third winding current. The first upstream net transmission power is determined based on the following operation: The first upstream voltage and the first winding current are combined to obtain the first transmission power; The second upstream voltage and the first winding current are combined to obtain the second transmission power; The first transmission power and the second transmission power are fused to obtain the first upstream net transmission power.

5. The method according to claim 4, characterized in that, The carbon emissions include a first target carbon emissions corresponding to the first winding current, a second target carbon emissions corresponding to the second winding current, and a third target carbon emissions corresponding to the third winding current; the upstream carbon emission factor includes a first carbon emission factor corresponding to the first current channel, a second carbon emission factor corresponding to the second current channel, and a third carbon emission factor corresponding to the third current channel. The first target carbon emission level is determined based on the following operations: The first transmission power and the first carbon emission factor are fused to obtain the first carbon emission amount; The second transmission power and the second carbon emission factor are fused to obtain the second carbon emission amount; The first carbon emission amount and the second carbon emission amount are combined to obtain the first target carbon emission amount.

6. The method according to claim 5, characterized in that, The downstream carbon emission factor includes a first downstream carbon emission factor corresponding to the first winding current, a second downstream carbon emission factor corresponding to the second winding current, and a third downstream carbon emission factor corresponding to the third winding current. The first downstream carbon emission factor is determined based on the following operation: The first downstream carbon emission factor is determined based on the ratio of the first target carbon emission amount to the first upstream net transmission power.

7. The method according to claim 6, characterized in that, The step of determining the downstream carbon emission factor corresponding to the downstream power distribution network based on the ratio of the carbon emissions to the upstream net transmission power further includes: When the upstream net transmission power is less than a preset power threshold, the downstream carbon emission factor is determined based on the following operation: Obtain the reverse carbon emission factor corresponding to the reverse power; Based on the reverse carbon emission factor and the reverse transmission power, the upstream carbon emission factor is updated to obtain the updated upstream carbon emission factor. Based on the updated upstream carbon emission factor, the reverse transmission power is updated to obtain an updated reverse transmission power and an updated reverse carbon emission factor corresponding to the updated reverse transmission power. If the updated reverse carbon emission factor meets the preset conditions, the updated reverse carbon emission factor is determined as the downstream carbon emission factor.

8. The method according to claim 1, characterized in that, The process of fusing the transformer loss data, the rated current, and the downstream carbon emission factor to obtain carbon loss data includes: The transformer power loss is obtained by fusing the ratio between the rated current and the downstream current with the transformer loss data. The carbon loss data is obtained by fusing the transformer power loss and the downstream carbon emission factor.

9. A data processing device for a power distribution network, characterized in that, The device includes: The first acquisition module is used to acquire the downstream current and downstream voltage provided by the transformer and the downstream distribution network, the upstream voltage and upstream carbon emission factor between the transformer and the upstream distribution network, and the transformer loss data and rated current of the transformer, wherein the transformer loss data includes copper loss data and iron loss data. The first execution module is used to perform a symmetrical component transformation operation and a clock direction conversion operation on the downstream current to obtain the upstream current between the transformer and the upstream distribution network. The symmetrical component transformation operation is used to convert the downstream current into a downstream component current, and the clock direction conversion operation is used to remove the upstream and downstream phase difference in the downstream component current. The first fusion module is used to fuse the upstream carbon emission factor and the upstream net transmission power to obtain the carbon emission amount, wherein the upstream net transmission power is obtained by fusing the upstream voltage and the upstream current; The first determining module is used to determine the downstream carbon emission factor corresponding to the downstream power distribution network based on the ratio of the carbon emissions to the upstream net transmission power. The second fusion module is used to fuse the transformer loss data, the rated current, and the downstream carbon emission factor to obtain carbon loss data; and The third fusion module is used to fuse the downstream current, the downstream voltage, and the downstream carbon emission factor to obtain cyclic carbon emission data, and push the carbon emission amount, the downstream carbon emission factor, the carbon loss data, and the cyclic carbon emission data to the terminal.

10. An electronic device, comprising: One or more processors; Memory, used to store one or more computer programs. The characteristic feature is that the one or more processors execute the one or more computer programs to implement the steps of the method according to any one of claims 1 to 8.

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