CN116231657B - Global carbon flow distributed determination method and device for transmission and distribution network - Google Patents
Global carbon flow distributed determination method and device for transmission and distribution network Download PDFInfo
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Abstract
The embodiment of the invention provides a method and a device for determining global carbon flow distribution of a transmission and distribution network, wherein the method comprises the following steps: acquiring power attribute data in a distributed transmission and distribution network to determine the power distribution of the whole network; based on the power distribution of the whole network, carrying out power flow tracking, determining a corresponding basic matrix and a basic vector, and constructing a countercurrent tracking matrix; carrying out power flow tracking on the power transmission and transmission main system based on the basic matrix, the basic vector and the countercurrent tracking matrix, and calculating to obtain electric carbon factor distribution of each node in the power transmission and transmission main system; according to the connection relation between each node in the power generation and transmission main system and the power distribution auxiliary system, boundary nodes are determined, electric carbon factors of the boundary nodes are added into an equivalent generator set to serve as input of the power distribution auxiliary system, and the electric carbon factor distribution of each node in the power distribution auxiliary system is determined through power flow tracking of the power distribution auxiliary system, so that global carbon flow distribution is determined. By adopting the method, accurate calculation results can be obtained, and meanwhile, the calculation resources are greatly saved.
Description
Technical Field
The invention relates to the technical field of space analysis, in particular to a global carbon flow distributed determination method and device for a transmission and distribution network.
Background
The electric power industry is taken as an important energy industry in China, the carbon emission receives half of the national carbon emission, however, the main body of electric power is a user, the user has corresponding emission requirements on the aspect of the carbon emission, but the requirements on energy conservation and emission reduction are contrary to each other when the carbon emission is carried out, so that the overall analysis and determination of the carbon flow of the whole network are required in the process of power grid transmission and distribution, and the carbon flow direction can be better determined, thereby guiding the user to save energy and reduce emission.
At present, distributed transmission and distribution cooperation global carbon flow calculation is still oriented to a global power system, and carbon flow analysis and calculation are performed on a whole network (1000 KV to 10KV full-voltage level). The core idea is to utilize the principal and subordinate separability of the transmission and distribution network to perform decoupling calculation on the carbon flow of the transmission and distribution network. However, the current decoupling calculation is only carried out on the calculation level to carry out the master-slave split calculation, the calculation difficulty is not greatly improved, and the calculation amount is very large.
Disclosure of Invention
Aiming at the problems existing in the prior art, the embodiment of the invention provides a method and a device for determining global carbon flow distribution of a transmission and distribution network.
The embodiment of the invention provides a global carbon flow distributed determining method for a transmission and distribution network, which comprises the following steps:
acquiring power attribute data in the distributed transmission and distribution network, and carrying out power flow calculation based on the power attribute data to determine the whole-network power distribution of the distributed transmission and distribution network;
and carrying out power flow tracking corresponding to the power flow calculation based on the whole network power distribution, determining a corresponding basic matrix and a basic vector in the power flow tracking process, and constructing a corresponding countercurrent tracking matrix based on the basic matrix and the basic vector, wherein the basic matrix and the basic vector comprise: the system comprises a branch active power flow matrix, a generator active injection distribution matrix, a node active flux matrix, a branch net loss vector, a node load vector, a generator carbon emission vector and an association matrix;
analyzing the power flow calculation process, and decomposing the power flow calculation process of the distributed transmission and distribution network into a power transmission power flow process of a power transmission main system and a power distribution power flow process of a power distribution auxiliary system;
based on the basic matrix, the basic vector and the countercurrent tracking matrix, carrying out power flow tracking on the power transmission and transmission main system, and calculating to obtain electric carbon factor distribution of each node in the power transmission and transmission main system;
determining boundary nodes according to the connection relation between each node in the power generation and transmission main system and the power distribution auxiliary system, adding the electric carbon factors of the boundary nodes into an equivalent generator set to serve as the input of the power distribution auxiliary system, determining the electric carbon factor distribution of each node in the power distribution auxiliary system by carrying out tide tracking on the power distribution auxiliary system, and determining the global carbon flow distribution of the distributed transmission and distribution network based on the electric carbon factor distribution of each node in the power generation and transmission main system and the power distribution auxiliary system.
In one embodiment, the computational expression of the countercurrent tracking matrix includes:
PB is a branch active power flow matrix, PN is a node active power flow matrix;for N-dimensional row vectors, the elements are all 1, < >>For the K-dimensional row vector, the elements are all 1, and A is the countercurrent tracking matrix.
In one embodiment, the calculation expression of the electric carbon factor distribution of each node in the power generation and transmission main system includes:
PN is the node active flux matrix, A is the countercurrent tracking matrix, PG is the generator active injection distribution matrix, RN is the carbon flow rate flux of each node in the generator and power transmission main system, EG is the generator carbon emission vector, and EN is the electric carbon factor of each node in the generator and power transmission main system.
In one embodiment, the method further comprises:
calculating generalized load based on the whole network power distribution of a transmission and distribution network, carrying out power generation and transmission flow tracking, and calculating power generation and transmission carbon flow distribution by combining the electric carbon factors of the power generation and transmission main system;
based on the generated carbon flow distribution, carrying out network equivalence on the boundary nodes, carrying out distribution flow tracking, and calculating distribution carbon flow distribution by combining the electric carbon factors of the distribution slave system;
and determining the global carbon flow distribution of the distributed transmission and distribution network by combining the generated carbon flow distribution and the distribution carbon flow distribution.
In one embodiment, the method further comprises:
when the number of the boundary nodes is 1, adding the electric carbon factors of the boundary nodes into the equivalent generator set as the input of the power distribution slave system, wherein the method comprises the following steps:
and taking the electrical carbon factor of the boundary node as the input of a power distribution slave system.
The embodiment of the invention provides a global carbon flow distributed determining device for a transmission and distribution network, which comprises the following components:
the power flow calculation module is used for acquiring power attribute data in the distributed transmission and distribution network, carrying out power flow calculation based on the power attribute data and determining the whole network power distribution of the distributed transmission and distribution network;
the power flow tracking module is used for carrying out power flow tracking corresponding to the power flow calculation based on the whole network power distribution, determining a corresponding basic matrix and a basic vector in the power flow tracking process, and constructing a corresponding countercurrent tracking matrix based on the basic matrix and the basic vector, wherein the basic matrix and the basic vector comprise: the system comprises a branch active power flow matrix, a generator active injection distribution matrix, a node active flux matrix, a branch net loss vector, a node load vector, a generator carbon emission vector and an association matrix;
the decomposition module is used for analyzing the power flow calculation process and decomposing the power flow calculation process of the distributed transmission and distribution network into a power transmission power flow process of a power transmission main system and a power distribution power flow process of a power distribution auxiliary system;
the main system module is used for carrying out power flow tracking on the power transmission and transmission main system based on the basic matrix, the basic vector and the countercurrent tracking matrix, and calculating to obtain electric carbon factor distribution of each node in the power transmission and transmission main system;
the slave system module is used for determining boundary nodes according to the connection relation between each node in the power generation and transmission main system and the power distribution slave system, adding the electric carbon factors of the boundary nodes into an equivalent generator set to serve as the input of the power distribution slave system, determining the electric carbon factor distribution of each node in the power distribution slave system by carrying out power flow tracking on the power distribution slave system, and determining the global carbon flow distribution of the distributed transmission and distribution network based on the electric carbon factor distribution of each node in the power generation and transmission main system and the power distribution slave system.
In one embodiment, the apparatus further comprises:
the main system calculation module is used for calculating generalized load based on the whole network power distribution of the transmission and distribution network, carrying out power generation and transmission flow tracking, and calculating power generation and transmission carbon flow distribution by combining the electric carbon factors of the power generation and transmission main system;
the slave system calculation module is used for carrying out network equivalence on the boundary nodes based on the generated electricity carbon flow distribution, carrying out distribution flow tracking and calculating distribution carbon flow distribution by combining the electricity carbon factors of the distribution slave system;
and the combination module is used for combining the generated electricity carbon flow distribution and the distribution carbon flow distribution and determining the global carbon flow distribution of the distributed electricity transmission and distribution network.
In one embodiment, the apparatus further comprises:
and the input module is used for taking the electric carbon factor of the boundary nodes as the input of the power distribution slave system when the number of the boundary nodes is 1.
The embodiment of the invention provides electronic equipment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the steps of the global carbon flow distribution type determining method of the transmission and distribution network when executing the program.
An embodiment of the present invention provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the above-described transmission and distribution grid global carbon flow distributed determination method.
The embodiment of the invention provides a method and a device for determining global carbon flow distribution of a transmission and distribution network, which are used for acquiring power attribute data in the distributed transmission and distribution network, carrying out power flow calculation based on the power attribute data and determining the power distribution of the whole network of the distributed transmission and distribution network; based on the power distribution of the whole network, carrying out power flow tracking corresponding to power flow calculation, determining a corresponding basic matrix and a corresponding basic vector in the power flow tracking process, and constructing a corresponding countercurrent tracking matrix based on the basic matrix and the basic vector, wherein the basic matrix and the basic vector comprise: the system comprises a branch active power flow matrix, a generator active injection distribution matrix, a node active flux matrix, a branch net loss vector, a node load vector, a generator carbon emission vector and an association matrix; analyzing a power flow calculation process, and decomposing the power flow calculation process of the distributed transmission and distribution network into a power transmission and transmission power flow process of a power transmission and transmission main system and a power distribution power flow process of a power distribution auxiliary system; carrying out power flow tracking on the power transmission and transmission main system based on the basic matrix, the basic vector and the countercurrent tracking matrix, and calculating to obtain electric carbon factor distribution of each node in the power transmission and transmission main system; determining boundary nodes according to the connection relation between each node in the power generation and transmission main system and the power distribution auxiliary system, adding electric carbon factors of the boundary nodes into an equivalent generator set to serve as input of the power distribution auxiliary system, determining electric carbon factor distribution of each node in the power distribution auxiliary system by carrying out tide tracking on the power distribution auxiliary system, and determining global carbon flow distribution of the distributed transmission and distribution network based on the electric carbon factor distribution of each node in the power generation and transmission main system and the power distribution auxiliary system. Therefore, the calculation of the overall complex countercurrent tracking matrix of the power distribution network can be performed by respectively calculating the master system and the slave system, when the calculation of the master system with smaller calculation amount is performed, and when the calculation of the slave system with larger consumption of calculation resources is performed, the simple calculation can be performed on the basis of the calculation of the master system, the complex countercurrent tracking matrix calculation is not needed, and the calculation resources are greatly saved while the accurate calculation result can be obtained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flowchart of a method for determining a global carbon flow distribution of a transmission and distribution network according to an embodiment of the present invention;
fig. 2 is a master-slave structure diagram of a global power system of a transmission and distribution network in an embodiment of the present invention;
FIG. 3 is a basic block diagram of a global carbon flow distributed determination for a transmission and distribution network in an embodiment of the present invention;
fig. 4 is a block diagram of a global carbon flow distributed determining device for a transmission and distribution network according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a schematic flow chart of a method for determining global carbon flow distribution of a power transmission and distribution network according to an embodiment of the present invention, and as shown in fig. 1, the embodiment of the present invention provides a method for determining global carbon flow distribution of a power transmission and distribution network, including:
step S101, acquiring power attribute data in the distributed transmission and distribution network, and carrying out power flow calculation based on the power attribute data to determine the whole network power distribution of the distributed transmission and distribution network.
Specifically, power attribute data in the distributed power transmission and distribution network is obtained, wherein the power attribute data can comprise related operation conditions, such as data of a power grid structure, related parameters, generator loads, node loads and the like, and then corresponding whole-network power distribution is determined through power flow calculation of the power transmission and distribution network.
Step S102, performing power flow tracking corresponding to the power flow calculation based on the whole network power distribution, determining a corresponding base matrix and a corresponding base vector in the power flow tracking process, and constructing a corresponding countercurrent tracking matrix based on the base matrix and the base vector, where the base matrix and the base vector include: the system comprises a branch active power flow matrix, a generator active injection distribution matrix, a node active flux matrix, a branch net loss vector, a node load vector, a generator carbon emission vector and an association matrix.
Specifically, based on the power distribution of the whole network, the power flow tracking corresponding to the power flow calculation is performed, wherein the power flow tracking is a process of demarcating the source and the destination of the network power, the tracking from the source to the destination is realized by establishing an equality relation between the active output of the generator and the active power of each load, and the power flow tracking is realized by performing lossless equivalent processing on the network at first, and in the embodiment, the line loss is realized by moving to the first line section. Then, according to the actual distribution condition of the tide, constructing the following basic matrix and basic vector to realize calculation:
1. PB-branch active power flow matrixX N order)
The matrix measures the active power flow direction and specific numerical value of each line in the network, and belongs to the front derivative matrix of power flow tracking. The concrete structure is as follows: each element in the matrixRepresenting the forward active power value p (the active power flow value after removing the network loss for a certain line) on the line from the i node to the j node, namely +.>. If the i to j nodes have no line or flow power reversal, then +.>，/>. Other elementsThe elements are all 0.
2. PG-generator active injection distribution matrix (KXN order)
The matrix represents the distribution location of the gensets in the network and the actual internet power values. The constitution mechanism is as follows: if at firstThe bench generator is located at->On each node, the internet power value is +.>The other elements are all 0.
3. PN-node active flux matrix (N x N order diagonal matrix)
The matrix represents the actual active injection of each node, expressed as the sum of all incoming line power to the node and the generator injection power to which the node is connected. The elements of each diagonal element are:
the corresponding generation expression of the matrix is:
wherein, the liquid crystal display device comprises a liquid crystal display device,for N-dimensional row vectors, the elements are all 1, < >>For the K-dimensional row vector, the elements are all 1.
4. PLoss-branch loss vector (Bx1 dimension)
The PLoss vector represents the active loss of each branch, and the order from top to bottom sequentially orders the active of the branches. The arrangement sequence is that the non-zero elements of the PB matrix are arranged in sequence according to the sequence of the preceding columns and the following columns.
5. PL-node load vector (Nx1 dimension)
PL vector represents the active load of each node, and if there is no load at a certain point, the value at that point is 0.
6、、/>、/>、/>
The vector is the carbon emission intensity vector of the generator, and the carbon emission level of the unit is measured, wherein the carbon dioxide amount released into the atmosphere by the unit of electric energy is generated, and the unit is +.>。
The association matrix comprises(node-branch association matrix), -or (b)>(node-tributary head-end association matrix) and +.>(node-branch end closure)A joint matrix).
Based on the basic matrix and the basic vector, a corresponding countercurrent tracking matrix is constructed, wherein the countercurrent tracking matrix characterizes the injection condition of the active flux of each node generator to each node, the contribution share of each generator to the active flux of each node can be intuitively obtained through the matrix, and the detailed calculation expression comprises:
PB is a branch active power flow matrix, PN is a node active power flow matrix;for N-dimensional row vectors, the elements are all 1, < >>For the K-dimensional row vector, the elements are all 1, and A is the countercurrent tracking matrix.
Step S103, analyzing the power flow calculation process, and decomposing the power flow calculation process of the distributed transmission and distribution network into a power transmission power flow process of the power transmission and distribution main system and a power distribution power flow process of the power distribution auxiliary system.
Specifically, in the process of analyzing the power flow calculation, in the calculation process, the node set in the power network is divided into a power transmission and power flow generation process of a power transmission and transmission main system and a power distribution power flow process of a power distribution auxiliary system, and the dividing method can be as shown in fig. 2, in a master-slave structure diagram of the global power system of the power transmission and distribution network of fig. 2, no directly connected branch is arranged between the nodes of the main system and the nodes of the auxiliary system, namely, the main system and the auxiliary system are indirectly connected through boundary nodes. Under the division of the master-slave node set, the complex vector is expressed, so that a natural master-slave split form of the global tide equation set is obtained, and the natural master-slave split form is given by the following two equation sets in parallel:
the two equation sets are respectively called a power generation flow equation and a power distribution flow equation,the intermediate variables are iterated for master-slave splitting. />、/>And->Injecting complex power vectors into the nodes corresponding to the node sets respectively; />Is a node setThe nodes directly flow to the node set +.>Vector of branch complex power flow sum components without branch and +.>The component corresponding to the directly connected node is zero; />Is node set->Each node directly flows into a vector formed by the sum of branch complex power flow of the node set, and the sum comprises the complex power flow of the node to the ground branch.
And step S104, carrying out power flow tracking on the power transmission and transmission main system based on the basic matrix, the basic vector and the countercurrent tracking matrix, and calculating to obtain the electric carbon factor distribution of each node in the power transmission and transmission main system.
Specifically, based on the calculated basic matrix, basic vector and countercurrent tracking matrix, the power flow tracking is preferentially performed on the power transmission and transmission main system, the electric carbon factor distribution of each node in the power transmission and transmission main system is calculated, and a specific calculation expression comprises:
wherein PN is the node active flux matrix, A is the countercurrent tracking matrix, PG is the generator active injection distribution matrix, which is the sum of the injection power of each node generator in the main system, RN is the carbon flow rate flux of each node in the power generation main system, EG is the generator carbon emission vector, which is the generator carbon emission intensity of each node in the main system, EN is the electrical carbon factor of each node in the power generation main system,diagonalizing the vector into a matrix is represented.
Step S105, determining boundary nodes according to the connection relation between each node in the power generation and transmission main system and the power distribution auxiliary system, adding the electric carbon factors of the boundary nodes into an equivalent generator set to serve as the input of the power distribution auxiliary system, determining the electric carbon factor distribution of each node in the power distribution auxiliary system by carrying out power flow tracking on the power distribution auxiliary system, and determining the global carbon flow distribution of the distributed transmission and distribution network based on the electric carbon factor distribution of each node in the power generation and transmission main system and the power distribution auxiliary system.
Specifically, according to the connection relation between each node in the power generation and transmission main system and the power distribution auxiliary system, the boundary nodes are connected with the main system and the auxiliary system, the electric carbon factors of the boundary nodes are added into the equivalent generator sets to serve as the input of the power distribution auxiliary system, the equivalent meaning is the value of the generator sets in a certain row in the countercurrent tracking matrix A equivalent to the electric carbon factors, when the number of the boundary nodes is 1, the equivalent generator sets are not needed to be added, the electric carbon factors of the boundary nodes are directly used as the input, and the electric carbon factor distribution of each node in the power distribution auxiliary system is determined by carrying out tide tracking on the power distribution auxiliary system, wherein a specific calculation expression comprises the following steps:
the construction process of the correlation matrix and the vector in the slave system is similar to that of the master system, but the data required by construction are system operation parameters in the slave system, including the slave system line power flow, node load power and the like. The only difference is that the internet power of the equivalent generator of the node connected with the slave system is the power value fed into the slave system by the master system, and the generated carbon emission intensity of the equivalent generator is the node electric carbon factor of the master system.
After determining the distribution of the electric carbon factors of each node in the power generation and transmission main system and the power distribution auxiliary system, the correct carbon flow analysis can be successfully realized through one-time carbon flow calculation, the calculation process approximates to a push-forward push-back algorithm of distribution network tide calculation, and the calculation steps are shown in a basic block diagram of global carbon flow distribution determination of the transmission and distribution network in fig. 3: firstly, calculating generalized load according to power flow of a power distribution network, carrying out power generation flow tracking, and calculating power generation carbon flow (main system carbon flow) by combining electric carbon factors, wherein power flow data are all positioned in a DC interface of a database; after the generated electric carbon flow is obtained, network equivalence is carried out on boundary nodes, then distribution network feeder line carbon flow calculation is carried out according to the same steps, and boundary system data are all located in a GC interface. And finally integrating the carbon flows of the transmission and distribution respectively to finish the distributed carbon flow calculation of the global transmission and distribution coordination.
According to the global carbon flow distributed determining method for the power transmission and distribution network, which is provided by the embodiment of the invention, power attribute data in the distributed power transmission and distribution network are obtained, and power flow calculation is performed based on the power attribute data to determine the power distribution of the whole network of the distributed power transmission and distribution network; based on the power distribution of the whole network, carrying out power flow tracking corresponding to power flow calculation, determining a corresponding basic matrix and a corresponding basic vector in the power flow tracking process, and constructing a corresponding countercurrent tracking matrix based on the basic matrix and the basic vector, wherein the basic matrix and the basic vector comprise: the system comprises a branch active power flow matrix, a generator active injection distribution matrix, a node active flux matrix, a branch net loss vector, a node load vector, a generator carbon emission vector and an association matrix; analyzing a power flow calculation process, and decomposing the power flow calculation process of the distributed transmission and distribution network into a power transmission and transmission power flow process of a power transmission and transmission main system and a power distribution power flow process of a power distribution auxiliary system; carrying out power flow tracking on the power transmission and transmission main system based on the basic matrix, the basic vector and the countercurrent tracking matrix, and calculating to obtain electric carbon factor distribution of each node in the power transmission and transmission main system; determining boundary nodes according to the connection relation between each node in the power generation and transmission main system and the power distribution auxiliary system, adding electric carbon factors of the boundary nodes into an equivalent generator set to serve as input of the power distribution auxiliary system, determining electric carbon factor distribution of each node in the power distribution auxiliary system by carrying out tide tracking on the power distribution auxiliary system, and determining global carbon flow distribution of the distributed transmission and distribution network based on the electric carbon factor distribution of each node in the power generation and transmission main system and the power distribution auxiliary system. Therefore, the calculation of the complex countercurrent tracking matrix can be performed when the calculation of the main system and the slave system with smaller calculation amount is performed, and the simple calculation can be performed on the basis of the calculation of the main system when the calculation of the slave system with larger consumption of calculation resources is performed, so that the complex countercurrent tracking matrix calculation is not needed, an accurate calculation result can be obtained, and the calculation resources are also greatly saved.
Fig. 4 is a schematic diagram of a global carbon flow distributed determining device for a transmission and distribution network according to an embodiment of the present invention, including: a power flow calculation module S201, a power flow tracking module S202, a decomposition module S203, a master system module S204, and a slave system module S205, wherein:
and the power flow calculation module S201 is used for acquiring the power attribute data in the distributed transmission and distribution network, carrying out power flow calculation based on the power attribute data and determining the whole network power distribution of the distributed transmission and distribution network.
The power flow tracking module S202 is configured to perform power flow tracking corresponding to the power flow calculation based on the whole network power distribution, determine a corresponding base matrix and a base vector in the power flow tracking process, and construct a corresponding countercurrent tracking matrix based on the base matrix and the base vector, where the base matrix and the base vector include: the system comprises a branch active power flow matrix, a generator active injection distribution matrix, a node active flux matrix, a branch net loss vector, a node load vector, a generator carbon emission vector and an association matrix.
And the decomposition module S203 is used for analyzing the power flow calculation process and decomposing the power flow calculation process of the distributed transmission and distribution network into a power transmission power flow process of a power transmission main system and a power distribution power flow process of a power distribution auxiliary system.
And the main system module S204 is used for carrying out power flow tracking on the power transmission main system based on the basic matrix, the basic vector and the countercurrent tracking matrix, and calculating to obtain the electric carbon factor distribution of each node in the power transmission main system.
The slave system module S205 is configured to determine a boundary node according to a connection relationship between each node in the power generation and transmission main system and the power distribution slave system, add an electric carbon factor of the boundary node into an equivalent generator set as an input of the power distribution slave system, determine electric carbon factor distribution of each node in the power distribution slave system by tracking a power flow of the power distribution slave system, and determine global carbon flow distribution of the distributed power transmission and distribution network based on the electric carbon factor distribution of each node in the power generation and transmission main system and the power distribution slave system.
In one embodiment, the system further comprises:
and the main system calculation module is used for calculating generalized load based on the whole network power distribution of the transmission and distribution network, carrying out power generation and transmission flow tracking, and calculating power generation and transmission carbon flow distribution by combining the electric carbon factors of the power generation and transmission main system.
And the slave system calculation module is used for carrying out network equivalence on the boundary nodes based on the generated electricity carbon flow distribution, carrying out distribution flow tracking and calculating distribution carbon flow distribution by combining the electricity carbon factors of the distribution slave system.
And the combination module is used for combining the generated electricity carbon flow distribution and the distribution carbon flow distribution and determining the global carbon flow distribution of the distributed electricity transmission and distribution network.
In one embodiment, the system further comprises:
and the input module is used for taking the electric carbon factor of the boundary nodes as the input of the power distribution slave system when the number of the boundary nodes is 1.
For specific limitation of the transmission and distribution network global carbon flow distribution type determining device, reference may be made to the limitation of the transmission and distribution network global carbon flow distribution type determining method hereinabove, and the description thereof will not be repeated here. The modules in the transmission and distribution network global carbon flow distributed determining device can be all or partially realized by software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
Fig. 5 illustrates a physical schematic diagram of an electronic device, as shown in fig. 5, which may include: a processor (processor) 301, a memory (memory) 302, a communication interface (Communications Interface) 303 and a communication bus 304, wherein the processor 301, the memory 302 and the communication interface 303 perform communication with each other through the communication bus 304. The processor 301 may call logic instructions in the memory 302 to perform the following method: acquiring power attribute data in the distributed transmission and distribution network, and carrying out power flow calculation based on the power attribute data to determine the whole-network power distribution of the distributed transmission and distribution network; based on the power distribution of the whole network, carrying out power flow tracking corresponding to power flow calculation, determining a corresponding basic matrix and a corresponding basic vector in the power flow tracking process, and constructing a corresponding countercurrent tracking matrix based on the basic matrix and the basic vector, wherein the basic matrix and the basic vector comprise: the system comprises a branch active power flow matrix, a generator active injection distribution matrix, a node active flux matrix, a branch net loss vector, a node load vector, a generator carbon emission vector and an association matrix; analyzing a power flow calculation process, and decomposing the power flow calculation process of the distributed transmission and distribution network into a power transmission and transmission power flow process of a power transmission and transmission main system and a power distribution power flow process of a power distribution auxiliary system; carrying out power flow tracking on the power transmission and transmission main system based on the basic matrix, the basic vector and the countercurrent tracking matrix, and calculating to obtain electric carbon factor distribution of each node in the power transmission and transmission main system; determining boundary nodes according to the connection relation between each node in the power generation and transmission main system and the power distribution auxiliary system, adding electric carbon factors of the boundary nodes into an equivalent generator set to serve as input of the power distribution auxiliary system, determining electric carbon factor distribution of each node in the power distribution auxiliary system by carrying out tide tracking on the power distribution auxiliary system, and determining global carbon flow distribution of the distributed transmission and distribution network based on the electric carbon factor distribution of each node in the power generation and transmission main system and the power distribution auxiliary system.
Further, the logic instructions in memory 302 described above may be implemented in the form of software functional units and stored in a computer readable storage medium when sold or used as a stand alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, embodiments of the present invention further provide a non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor is implemented to perform the transmission method provided in the above embodiments, for example, including: acquiring power attribute data in the distributed transmission and distribution network, and carrying out power flow calculation based on the power attribute data to determine the whole-network power distribution of the distributed transmission and distribution network; based on the power distribution of the whole network, carrying out power flow tracking corresponding to power flow calculation, determining a corresponding basic matrix and a corresponding basic vector in the power flow tracking process, and constructing a corresponding countercurrent tracking matrix based on the basic matrix and the basic vector, wherein the basic matrix and the basic vector comprise: the system comprises a branch active power flow matrix, a generator active injection distribution matrix, a node active flux matrix, a branch net loss vector, a node load vector, a generator carbon emission vector and an association matrix; analyzing a power flow calculation process, and decomposing the power flow calculation process of the distributed transmission and distribution network into a power transmission and transmission power flow process of a power transmission and transmission main system and a power distribution power flow process of a power distribution auxiliary system; carrying out power flow tracking on the power transmission and transmission main system based on the basic matrix, the basic vector and the countercurrent tracking matrix, and calculating to obtain electric carbon factor distribution of each node in the power transmission and transmission main system; determining boundary nodes according to the connection relation between each node in the power generation and transmission main system and the power distribution auxiliary system, adding electric carbon factors of the boundary nodes into an equivalent generator set to serve as input of the power distribution auxiliary system, determining electric carbon factor distribution of each node in the power distribution auxiliary system by carrying out tide tracking on the power distribution auxiliary system, and determining global carbon flow distribution of the distributed transmission and distribution network based on the electric carbon factor distribution of each node in the power generation and transmission main system and the power distribution auxiliary system.
The system embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a transmission and distribution network global carbon flow distributed determining method which is characterized by comprising the following steps:
acquiring power attribute data in the distributed transmission and distribution network, and carrying out power flow calculation based on the power attribute data to determine the whole-network power distribution of the distributed transmission and distribution network;
and carrying out power flow tracking corresponding to the power flow calculation based on the whole network power distribution, determining a corresponding basic matrix and a basic vector in the power flow tracking process, and constructing a corresponding countercurrent tracking matrix based on the basic matrix and the basic vector, wherein the basic matrix and the basic vector comprise: the system comprises a branch active power flow matrix, a generator active injection distribution matrix, a node active flux matrix, a branch net loss vector, a node load vector, a generator carbon emission vector and an association matrix;
analyzing the power flow calculation process, and decomposing the power flow calculation process of the distributed transmission and distribution network into a power transmission power flow process of a power transmission main system and a power distribution power flow process of a power distribution auxiliary system;
based on the basic matrix, the basic vector and the countercurrent tracking matrix, carrying out power flow tracking on the power transmission and transmission main system, and calculating to obtain electric carbon factor distribution of each node in the power transmission and transmission main system;
determining boundary nodes according to the connection relation between each node in the power generation and transmission main system and the power distribution auxiliary system, adding the electric carbon factors of the boundary nodes into an equivalent generator set to serve as the input of the power distribution auxiliary system, determining the electric carbon factor distribution of each node in the power distribution auxiliary system by carrying out tide tracking on the power distribution auxiliary system, and determining the global carbon flow distribution of the distributed transmission and distribution network based on the electric carbon factor distribution of each node in the power generation and transmission main system and the power distribution auxiliary system.
2. The transmission and distribution network global carbon flow distributed determination method according to claim 1, wherein the calculation expression of the countercurrent tracking matrix includes:
H＝I-PB T *PN -1
H*PN*ξ T ＝(v*PG) T
A＝H -1
PB is a branch active power flow matrix, PG is a generator active injection distribution matrix, PN is a node active power flow matrix; and xi is an N-dimensional row vector, all elements are 1, v is a K-dimensional row vector, all elements are 1, A is the countercurrent tracking matrix, and I is an identity matrix.
3. The method for determining the global carbon flow distribution of a power transmission and distribution network according to claim 1, wherein the calculation expression of the electric carbon factor distribution of each node in the power transmission and distribution network main system comprises:
PN＝A*PG
RN＝A*diag(EG)*PG
EN＝diag(PN) -1 *RN
PN is the node active flux matrix, A is the countercurrent tracking matrix, PG is the generator active injection distribution matrix, RN is the carbon flow rate flux of each node in the generator and power transmission main system, EG is the generator carbon emission vector, and EN is the electric carbon factor of each node in the generator and power transmission main system.
4. The method for determining a global carbon flow distribution of a power transmission and distribution network according to claim 1, wherein the determining the global carbon flow distribution of the distributed power transmission and distribution network based on the electric carbon factor distribution of each node in the power transmission and distribution master system and the power distribution slave system comprises:
calculating generalized load based on the whole network power distribution of a transmission and distribution network, carrying out power generation and transmission flow tracking, and calculating power generation and transmission carbon flow distribution by combining the electric carbon factors of the power generation and transmission main system;
based on the generated carbon flow distribution, carrying out network equivalence on the boundary nodes, carrying out distribution flow tracking, and calculating distribution carbon flow distribution by combining the electric carbon factors of the distribution slave system;
and determining the global carbon flow distribution of the distributed transmission and distribution network by combining the generated carbon flow distribution and the distribution carbon flow distribution.
5. The method of global carbon flow distributed determination for a power transmission and distribution network according to claim 1, further comprising:
when the number of the boundary nodes is 1, adding the electric carbon factors of the boundary nodes into the equivalent generator set as the input of the power distribution slave system, wherein the method comprises the following steps:
and taking the electrical carbon factor of the boundary node as the input of a power distribution slave system.
6. A transmission and distribution grid global carbon flow distributed determination apparatus, the apparatus comprising:
the power flow calculation module is used for acquiring power attribute data in the distributed transmission and distribution network, carrying out power flow calculation based on the power attribute data and determining the whole network power distribution of the distributed transmission and distribution network;
the power flow tracking module is used for carrying out power flow tracking corresponding to the power flow calculation based on the whole network power distribution, determining a corresponding basic matrix and a basic vector in the power flow tracking process, and constructing a corresponding countercurrent tracking matrix based on the basic matrix and the basic vector, wherein the basic matrix and the basic vector comprise: the system comprises a branch active power flow matrix, a generator active injection distribution matrix, a node active flux matrix, a branch net loss vector, a node load vector, a generator carbon emission vector and an association matrix;
the decomposition module is used for analyzing the power flow calculation process and decomposing the power flow calculation process of the distributed transmission and distribution network into a power transmission power flow process of a power transmission main system and a power distribution power flow process of a power distribution auxiliary system;
the main system module is used for carrying out power flow tracking on the power transmission and transmission main system based on the basic matrix, the basic vector and the countercurrent tracking matrix, and calculating to obtain electric carbon factor distribution of each node in the power transmission and transmission main system;
the slave system module is used for determining boundary nodes according to the connection relation between each node in the power generation and transmission main system and the power distribution slave system, adding the electric carbon factors of the boundary nodes into an equivalent generator set to serve as the input of the power distribution slave system, determining the electric carbon factor distribution of each node in the power distribution slave system by carrying out power flow tracking on the power distribution slave system, and determining the global carbon flow distribution of the distributed transmission and distribution network based on the electric carbon factor distribution of each node in the power generation and transmission main system and the power distribution slave system.
7. The transmission and distribution network global carbon flow distributed determination apparatus according to claim 6, wherein the apparatus further comprises:
the main system calculation module is used for calculating generalized load based on the whole network power distribution of the transmission and distribution network, carrying out power generation and transmission flow tracking, and calculating power generation and transmission carbon flow distribution by combining the electric carbon factors of the power generation and transmission main system;
the slave system calculation module is used for carrying out network equivalence on the boundary nodes based on the generated electricity carbon flow distribution, carrying out distribution flow tracking and calculating distribution carbon flow distribution by combining the electricity carbon factors of the distribution slave system;
and the combination module is used for combining the generated electricity carbon flow distribution and the distribution carbon flow distribution and determining the global carbon flow distribution of the distributed electricity transmission and distribution network.
8. The transmission and distribution network global carbon flow distributed determination apparatus according to claim 6, wherein the apparatus further comprises:
and the input module is used for taking the electric carbon factor of the boundary nodes as the input of the power distribution slave system when the number of the boundary nodes is 1.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor performs the steps of the method for determining the global carbon flow distribution of a transmission and distribution network as claimed in any one of claims 1 to 5 when the program is executed by the processor.
10. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor, implements the steps of the transmission and distribution grid global carbon flow distribution determination method according to any of claims 1 to 5.
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