CN110994701A - Method, device, equipment and storage medium for testing simultaneous feasibility of financial power transmission rights - Google Patents

Method, device, equipment and storage medium for testing simultaneous feasibility of financial power transmission rights Download PDF

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CN110994701A
CN110994701A CN201911341385.7A CN201911341385A CN110994701A CN 110994701 A CN110994701 A CN 110994701A CN 201911341385 A CN201911341385 A CN 201911341385A CN 110994701 A CN110994701 A CN 110994701A
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power
transmission
node
power transmission
power generation
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CN110994701B (en
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杨再敏
钟声
梁志飞
贾旭东
严旭
陈愈芳
辜炜德
尚楠
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Guangzhou Electric Power Trade Center Co ltd
Energy Development Research Institute of China Southern Power Grid Co Ltd
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Guangzhou Electric Power Trade Center Co ltd
Energy Development Research Institute of China Southern Power Grid Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/15—Correlation function computation including computation of convolution operations

Abstract

The invention discloses a method for testing simultaneous feasibility of financial power transmission rights, which comprises the following steps: acquiring initial power transmission capacity and network constraint data of a power transmission line, and constructing a power transmission model by using the initial power transmission capacity and the network constraint data; solving the power transmission model by taking the lowest total power generation cost as a target according to the quoted price of a power plant; and calculating the unit power generation amount distributed to each node in the power transmission network from the planned power amount based on the result obtained by solving the power transmission model. The invention provides a method, a device, equipment and a storage medium for simultaneously testing the feasibility of financial power transmission rights.

Description

Method, device, equipment and storage medium for testing simultaneous feasibility of financial power transmission rights
Technical Field
The invention relates to the technical field of power systems, in particular to a method, a device, equipment and a storage medium for testing simultaneous feasibility of financial power transmission rights.
Background
In order to ensure effective connection between market trading and actual dispatching, market designers generally select one of regional pricing and node marginal pricing as a mechanism for forming spot price, and either of the two methods directly causes the spot price to be reduced when a trading plan is influenced by physical constraints of the power grid, the phenomenon that ① unit output of a blocked power delivery node (price zone) is reduced and the spot price is lowered is directly caused, the phenomenon that ② unit output of a blocked power delivery node (price zone) is scheduled and the spot price is increased when a trading plan is influenced by physical constraints of the power grid, the phenomenon that ③ finally causes price differences among nodes (price zones) of the whole system to be avoided, the phenomenon mainly causes the market participants to be influenced by the fact that on part of the market participants are subjected to long-term fair contract points among contracts, electric contracts and spot contracts, and the market participants are required to be paid for realizing perfect balance between the spot price and the market participants, and the market participants are required to be paid for the residual price of the market.
In compliance with the above two objective requirements, in the early 90 s of the last century, a group of scholars represented by Hogan put forward the concept of Financial Transmission Rights (FTR), and lay a theoretical foundation for applying the concept to hedge blocking risk and allocation of blocking surplus. Under the theoretical assumption, the financial transmission right predefines a corresponding contract path with the direction of an injection (source) electric energy node (or price zone) pointing to a sink node (or price zone) on the one hand, and defines a corresponding capacity Q on the other hand, and takes the price difference Q (P) between the two nodessink-Psource) As a settlement reference price for the contract. When the power grid is blocked, even if the power consumer located at the sink node (or the price zone) is raised due to the spot price of the node (or the price zone) and P is enabledsink＞Psource(ii) a As long as the financial power transmission right is possessed, corresponding compensation can be obtained in the settlement link, and the influence of blockage is just counteracted.
Because the electric power market in China is in the transition stage from planning to marketing, the problem of parallel planning electric quantity and market electric quantity exists, and the prior art cannot determine feasible financial transmission right capacity and path by combining the practical situations of power grid topology and capacity.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method, a device, equipment and a storage medium for testing the simultaneous feasibility of the financial transmission right, which are used for carrying out simultaneous feasibility tests on the distribution capacity after calculating the occupation amount of the planned electric quantity on the power grid capacity so as to determine the financial transmission right capacity and the path meeting the physical constraints of the power grid. The technical scheme is as follows:
in a first aspect, an embodiment of the present invention provides a method for testing simultaneous feasibility of financial power transmission rights, including:
acquiring initial power transmission capacity and network constraint data of a power transmission line, and constructing a power transmission model by using the initial power transmission capacity and the network constraint data;
solving the power transmission model by taking the lowest total power generation cost as a target according to the quoted price of a power plant;
and calculating the unit power generation amount distributed to each node in the power transmission network from the planned power amount based on the result obtained by solving the power transmission model.
In a first possible implementation manner of the first aspect of the present invention, the constructing a power transmission model using the initial power transmission capacity and the network constraint data includes:
selecting three power generation nodes in a power grid topological structure and determining line impedance and transmission capacity among the three power generation nodes so as to construct a three-node power transmission model;
and calculating a power transmission feasible set according to the power transmission line constraint of the three-node power transmission model.
In a second possible implementation manner of the first aspect of the present invention, the solving the power transmission model with a goal of minimizing the total power generation cost according to the price quoted by the power plant includes:
calculating the sum of the product of the generated energy of each power plant and the quoted price to obtain the total power generation cost; wherein the total power generation cost is equal to the planned power purchasing cost plus the market power purchasing cost.
In a third possible implementation manner of the first aspect of the present invention, the solving the power transmission model with the lowest total power generation cost as a target according to the price quoted by the power plant specifically includes:
is M according to the quoted price of the power plantA、MBAnd MCThe transmission capacity and line impedance of the line are respectively C1、C2、C3、Z1、Z2、Z3And the load of one node is L, and the power generation capacity of the power plant and the transmission capacity of the planned power occupying line are calculated in the following mode:
MinM＝MAGA+MBGB+MCGC(7)
Figure BDA0002329350640000031
Figure BDA0002329350640000032
Figure BDA0002329350640000033
L＝GA+GB+GC+X (11)
wherein the minimum total power generation cost is MinM, the regional planned electric quantity is X, and the transmission capacities of the lines occupied by the planned electric quantity are X respectively1、X2And X3Electric power generation G of power plantA、GBAnd GC。
In a fourth possible implementation manner of the first aspect of the present invention, the calculating, based on the result obtained by solving the power transmission model, a unit power generation amount to which each node in the power transmission network is allocated from the planned power amount includes:
constructing a line model by using a source flow analysis method based on a direct current distribution factor and taking one node C of a power grid topological structure as a reference point:
X＝ΔGA+ΔGB+ΔGC(12)
ΔXA-AB＝ΔGA×AA-AB(13)
ΔXA-AC＝ΔGA×AA-AC(14)
ΔXA-BC＝ΔGA×AA-BC(15)
ΔXB-BA＝ΔGB×AB-BA(16)
ΔXB-BC＝ΔGB×AB-BC(17)
ΔXB-AC＝ΔGB×AB-AC(18)
wherein the planned electric quantity of the region is X, delta GA、ΔGBAnd Δ GCFor the unit power generation, Δ X, distributed from the planned powerA-AB、ΔXA-AC、ΔXA-BC、ΔXB-BA、ΔXB-BCAnd Δ XB-ACRespectively representing the effects of node A and node B on line power, AA-AB、AA-BC、AA-AC、AB-BA、AB-ACAnd AB-BCAnd the power generation transfer distribution factors of the node A and the node B to each branch are respectively.
In a fifth possible implementation manner of the first aspect of the present invention, the power generation transition distribution factor is calculated by:
Figure BDA0002329350640000041
Figure BDA0002329350640000042
Figure BDA0002329350640000043
Figure BDA0002329350640000044
Figure BDA0002329350640000045
Figure BDA0002329350640000046
wherein A isA-AB、AA-BC、AA-AC、AB-BA、AB-ACAnd AB-BCGeneration of power for each branch for node A and node B, respectivelyTransferring distribution factors, wherein the line impedance corresponding to each line is Z1、Z2、Z3。
In a sixth possible implementation manner of the first aspect of the present invention, the calculating, based on a result obtained by solving the power transmission model, a unit power generation amount to which each node in the power transmission network is allocated from the planned power amount further includes:
and (3) utilizing the transmission capacity of the line occupied by the planned electric quantity obtained by solving the transmission model, and measuring the influence of the power generation node on the line power by the following modes:
|ΔXA-AB－ΔXB-BA|＝X1(25)
ΔXA-AC+ΔXB-AC＝X2(26)
ΔXA-BC+ΔXB-BC＝X3(27)
wherein, Δ XA-AB、ΔXA-AC、ΔXA-BC、ΔXB-BA、ΔXB-BCAnd Δ XB-ACRespectively representing the influence of the node A and the node B on the line power, wherein the transmission capacity of the line occupied by the planned electric quantity is X1、X2And X3。
In a second aspect, an embodiment of the present invention provides a device for testing simultaneous feasibility of financial power transmission rights, including:
the modeling module is used for acquiring initial transmission capacity and network constraint data of the transmission line and constructing a transmission model by using the initial transmission capacity and the network constraint data;
the operation module is used for solving the power transmission model by taking the lowest total power generation cost as a target according to the quotation of a power plant;
and the output module is used for calculating the unit power generation amount distributed to each node in the power transmission network from the planned power amount based on the result obtained by solving the power transmission model.
In a third aspect, an embodiment of the present invention provides a financial transmission right simultaneous feasibility testing apparatus, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, where the processor implements the financial transmission right simultaneous feasibility testing method as described above when executing the computer program.
In a fourth aspect, embodiments of the present invention provide a storage medium for a financial transmission right simultaneous feasibility testing method, the storage medium for the financial transmission right simultaneous feasibility testing method being configured to store one or more computer programs, the one or more computer programs comprising program code for executing the above-mentioned financial transmission right simultaneous feasibility testing method when the computer programs are run on a computer.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the invention provides a method, a device, equipment and a storage medium for testing the feasibility of financial power transmission right at the same time, the financial transmission right simultaneous feasibility testing method utilizes the initial transmission capacity and the network constraint data to construct a transmission model, the power transmission model is suitable for power market mechanism design for avoiding the blocking risk through financial power transmission rights, the occupation amount of the planned electric quantity to the power grid capacity can be obtained by solving the power transmission model, the simultaneous feasibility test of the distributed electric quantity of the planned electric quantity distributed to each line is carried out, thereby taking the actual power grid topological structure, the power transmission line maintenance plan, the power transmission line capacity constraint, the power grid model, the accident list and the like into consideration, and according to the consideration, and determining the financial transmission right capacity and the path which meet the physical constraint of the power grid by calculating the unit power generation amount distributed to each node in the power transmission network from the planned power amount. The invention can provide data support for power grid design and power generation capacity scheduling, is beneficial to realizing organic combination of market electric quantity and planned electric quantity, and realizes optimal distribution of the planned electric quantity.
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FIG. 1 is a flow chart illustrating the steps of a method for testing the simultaneous feasibility of financial power transmission rights in an embodiment of the present invention;
fig. 2 is a schematic diagram of an original power transmission model of a three-node system of a financial power transmission right simultaneous feasibility testing method in an embodiment of the present invention;
FIG. 3 is a three-node system power transmission model feasibility analysis line graph of a simultaneous feasibility testing method of financial power transmission rights in an embodiment of the present invention;
fig. 4 is a schematic diagram of a three-node system power transmission model considering planned power amount of a method for testing simultaneous feasibility of power transmission rights in financial services according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating steps of a method for testing simultaneous feasibility of financial power transmission rights based on a dc distribution factor method according to an embodiment of the present invention;
fig. 6 is a block diagram of a device for testing simultaneous feasibility of power transmission rights in accordance with an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides an exemplary embodiment of a method for testing the simultaneous feasibility of financial power transmission rights, including the steps of:
s101, acquiring initial power transmission capacity and network constraint data of a power transmission line, and constructing a power transmission model by using the initial power transmission capacity and the network constraint data; the network constraint data comprises a power grid topological structure and transmission line impedance;
s102, solving the power transmission model by taking the lowest total power generation cost as a target according to the quotation of a power plant;
and S103, calculating the unit power generation amount distributed to each node in the power transmission network from the planned power amount based on the result obtained by solving the power transmission model.
The invention provides a method, a device, equipment and a storage medium for testing the feasibility of financial power transmission right at the same time, the financial transmission right simultaneous feasibility testing method utilizes the initial transmission capacity and the network constraint data to construct a transmission model, the power transmission model is suitable for power market mechanism design for avoiding the blocking risk through financial power transmission rights, the occupation amount of the planned electric quantity to the power grid capacity can be obtained by solving the power transmission model, the simultaneous feasibility test of the distributed electric quantity of the planned electric quantity distributed to each line is carried out, thereby taking the actual power grid topological structure, the power transmission line maintenance plan, the power transmission line capacity constraint, the power grid model, the accident list and the like into consideration, and according to the consideration, and determining the financial transmission right capacity and the path which meet the physical constraint of the power grid by calculating the unit power generation amount distributed to each node in the power transmission network from the planned power amount. The invention can provide data support for power grid design and power generation capacity scheduling, is beneficial to realizing organic combination of market electric quantity and planned electric quantity, and realizes optimal distribution of the planned electric quantity.
The constructing of the power transmission model by using the initial power transmission capacity and the network constraint data includes:
selecting three power generation nodes in a power grid topological structure and determining line impedance and transmission capacity among the three power generation nodes so as to construct a three-node power transmission model;
and calculating a power transmission feasible set according to the power transmission line constraint of the three-node power transmission model.
Solving the power transmission model with the aim of minimizing the total power generation cost according to the quoted price of the power plant comprises the following steps:
calculating the sum of the product of the generated energy of each power plant and the quoted price to obtain the total power generation cost; wherein the total power generation cost is equal to the planned power purchasing cost plus the market power purchasing cost.
Referring to FIG. 2, in particular, a power plant G is knownA、GBAnd GCThe price quoted is respectively 50 ￥/MWh, 100 ￥/MWh and 200 ￥/MWh, the transmission capacity of lines AB, BC and AC is respectively 60MW, 100MW and 200MW, the line impedance is Z, and the load at node C is 200 MW.
In the three-node power transmission model, the following three equations can be satisfied by the system according to the power transmission line constraint:
-180≤GA-GB≤180 (1)
-300≤GA+2GB≤300 (2)
-240≤2GA+GB≤240 (3)
solving the equation can obtain the feasible set of system power transmission as {0, 1, 2, 3} in the original power transmission model, and the optimal power transmission method is the vertex 2, at which time GA、GBAnd GCThe generated energy is respectively as follows: 60MW, 120MW and 20MW, the total power generation cost of the system is as follows:
Coriginal＝60×50+120×100+20×200＝￥19000 (4)
Referring to fig. 3, if the planned amount of power occupies the transmission capacity, the transmission capacity of line AB becomes 0, GAAnd GBLoad can only be applied to node C via lines AC and BC, where the power transmission feasible set of the system is {0, 4, 5, 6}, and the optimal power transmission method is at vertex 5, where G isA、GBAnd GCThe generated energy is respectively as follows: 80MW, 100MW and 20MW, and the total power generation cost of the system is as follows:
C＝80×50+100×100+20×200＝￥18000 (5)
it can be understood that the "Guangdong electric power market Settlement rules" stipulates that: the government department issues annual (monthly) electric quantity plans to the power generation enterprises, signs basic number contracts and executes government pricing, and the electric quantity of the basic number contracts is subjected to price difference settlement according to the difference value between the government approval online electric price and the unit date market node electric price. The total electric charge of the B-type unit consists of the base contract electric charge and the total revenue of the marketized electric charge. It can be known that the total power generation cost of the system is equal to the planned power purchase cost plus the market power purchase cost. Namely:
Cgeneral assembly＝CPlan for+CMarket place(6)
Referring to fig. 4, the solving of the power transmission model with the lowest total power generation cost as a target according to the price quoted by the power plant specifically includes:
is M according to the quoted price of the power plantA、MBAnd MCThe transmission capacity and line impedance of the line are respectively C1、C2、C3、Z1、Z2、Z3And the load of one node is L, and the power generation capacity of the power plant and the transmission capacity of the planned power occupying line are calculated in the following mode:
MinM＝MAGA+MBGB+MCGC(7)
Figure BDA0002329350640000081
Figure BDA0002329350640000082
Figure BDA0002329350640000091
L＝GA+GB+GC+X (11)
wherein the minimum total power generation cost is MinM, the regional planned electric quantity is X, and the transmission capacities of the lines occupied by the planned electric quantity are X respectively1、X2And X3Electric power generation G of power plantA、GBAnd GC。
Referring to fig. 5, the calculating the unit power generation amount distributed from the planned power amount to each node in the power transmission network based on the result obtained by solving the power transmission model includes:
constructing a line model by using a source flow analysis method based on a direct current distribution factor and taking one node C of a power grid topological structure as a reference point:
X＝ΔGA+ΔGB+ΔGC(12)
ΔXA-AB＝ΔGA×AA-AB(13)
ΔXA-AC＝ΔGA×AA-AC(14)
ΔXA-BC＝ΔGA×AA-BC(15)
ΔXB-BA＝ΔGB×AB-BA(16)
ΔXB-BC＝ΔGB×AB-BC(17)
ΔXB-AC＝ΔGB×AB-AC(18)
wherein the planned electric quantity of the region is X, delta GA、ΔGBAnd Δ GCFor the unit power generation, Δ X, distributed from the planned powerA-AB、ΔXA-AC、ΔXA-BC、ΔXB-BA、ΔXB-BCAnd Δ XB-ACRespectively representing the effects of node A and node B on line power, AA-AB、AA-BC、AA-AC、AB-BA、AB-ACAnd AB-BCAnd the power generation transfer distribution factors of the node A and the node B to each branch are respectively.
The power generation transfer distribution factor is calculated in the following way:
Figure BDA0002329350640000092
Figure BDA0002329350640000093
Figure BDA0002329350640000094
Figure BDA0002329350640000101
Figure BDA0002329350640000102
Figure BDA0002329350640000103
wherein A isA-AB、AA-BC、AA-AC、AB-BA、AB-ACAnd AB-BCThe distribution factors of the power generation transfer of each branch circuit are respectively node A and node B, and each line pairThe respective line impedance is Z1、Z2、Z3。
The calculating, based on a result obtained by solving the power transmission model, a unit power generation amount to which each node in the power transmission network is allocated from the planned power amount further includes:
and (3) utilizing the transmission capacity of the line occupied by the planned electric quantity obtained by solving the transmission model, and measuring the influence of the power generation node on the line power by the following modes:
|ΔXA-AB－ΔXB-BA|＝X1(25)
ΔXA-AC+ΔXB-AC＝X2(26)
ΔXA-BC+ΔXB-BC＝X3(27)
wherein, Δ XA-AB、ΔXA-AC、ΔXA-BC、ΔXB-BA、ΔXB-BCAnd Δ XB-ACRespectively representing the influence of the node A and the node B on the line power, wherein the transmission capacity of the line occupied by the planned electric quantity is X1、X2And X3。
It is understood that X is1、X2And X3Also included are the upper transmission powers of lines AB, BC and AC.
In this embodiment, a three-node power transmission model is taken as an example, a node pricing mechanism and a traditional power grid source flow analysis are combined, a direct-current distribution factor-based method is applied, a power generation transfer distribution factor is introduced, and optimal distribution of planned electric quantity is achieved by taking maximization of overall social welfare of a system as an optimization target. Although the technical scheme is explained by taking a simple three-node model as an example, the method can be popularized to an N-node power transmission system and has practical application value.
Referring to fig. 6, the present invention provides an exemplary embodiment of a device for testing simultaneous feasibility of power transmission rights, including:
the modeling module 201 is configured to obtain initial transmission capacity and network constraint data of the transmission line, and construct a transmission model using the initial transmission capacity and the network constraint data;
the modeling module is further configured to:
selecting three power generation nodes in a power grid topological structure and determining line impedance and transmission capacity among the three power generation nodes so as to construct a three-node power transmission model;
and calculating a power transmission feasible set according to the power transmission line constraint of the three-node power transmission model.
The operation module 202 is used for solving the power transmission model by taking the lowest total power generation cost as a target according to the quotation of a power plant;
the operation module is further configured to:
calculating the sum of the product of the generated energy of each power plant and the quoted price to obtain the total power generation cost; wherein the total power generation cost is equal to the planned power purchasing cost plus the market power purchasing cost.
The operation module is further configured to:
is M according to the quoted price of the power plantA、MBAnd MCThe transmission capacity and line impedance of the line are respectively C1、C2、C3、Z1、Z2、Z3And the load of one node is L, and the power generation capacity of the power plant and the transmission capacity of the planned power occupying line are calculated in the following mode:
MinM＝MAGA+MBGB+MCGC(7)
Figure BDA0002329350640000111
Figure BDA0002329350640000112
Figure BDA0002329350640000113
L＝GA+GB+GC+X (11)
wherein the minimum total generating cost is MinM, and the regional planThe electric quantity is X, and the transmission capacities of the planned electric quantity occupying lines are X respectively1、X2And X3Electric power generation G of power plantA、GBAnd GC。
And the output module 203 is used for calculating the unit power generation amount distributed to each node in the power transmission network from the planned power amount based on the result obtained by solving the power transmission model.
The output module is further configured to:
constructing a line model by using a source flow analysis method based on a direct current distribution factor and taking one node C of a power grid topological structure as a reference point:
X＝ΔGA+ΔGB+ΔGC(12)
ΔXA-AB＝ΔGA×AA-AB(13)
ΔXA-AC＝ΔGA×AA-AC(14)
ΔXA-BC＝ΔGA×AA-BC(15)
ΔXB-BA＝ΔGB×AB-BA(16)
ΔXB-BC＝ΔGB×AB-BC(17)
ΔXB-AC＝ΔGB×AB-AC(18)
wherein the planned electric quantity of the region is X, delta GA、ΔGBAnd Δ GCFor the unit power generation, Δ X, distributed from the planned powerA-AB、ΔXA-AC、ΔXA-BC、ΔXB-BA、ΔXB-BCAnd Δ XB-ACRespectively representing the effects of node A and node B on line power, AA-AB、AA-BC、AA-AC、AB-BA、AB-ACAnd AB-BCAnd the power generation transfer distribution factors of the node A and the node B to each branch are respectively.
The output module further comprises:
the distribution factor calculation module is used for calculating the power generation transfer distribution factor by the following method:
Figure BDA0002329350640000121
Figure BDA0002329350640000122
Figure BDA0002329350640000123
Figure BDA0002329350640000124
Figure BDA0002329350640000125
Figure BDA0002329350640000126
wherein A isA-AB、AA-BC、AA-AC、AB-BA、AB-ACAnd AB-BCRespectively are power generation transfer distribution factors of the node A and the node B to each branch, and the line impedance corresponding to each line is Z1、Z2、Z3。
The output module further comprises:
and the influence metering module is used for utilizing the transmission capacity of the line occupied by the planned electric quantity obtained by solving the transmission model and metering the influence of the generating node on the line power by the following modes:
|ΔXA-AB－ΔXB-BA|＝X1(25)
ΔXA-AC+ΔXB-AC＝X2(26)
ΔXA-BC+ΔXB-BC＝X3(27)
wherein, Δ XA-AB、ΔXA-AC、ΔXA-BC、ΔXB-BA、ΔXB-BCAnd Δ XB-ACRespectively representing the influence of the node A and the node B on the line power and planning the electric quantity occupationThe transmission capacities of the lines are X respectively1、X2And X3。
The invention provides an exemplary embodiment, a financial transmission right simultaneous feasibility testing device, which comprises a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, wherein the processor executes the computer program to realize the financial transmission right simultaneous feasibility testing method.
The present invention provides an exemplary embodiment, a storage medium of a financial transmission right simultaneous feasibility testing method for storing one or more computer programs, the one or more computer programs comprising program code for executing the above-mentioned financial transmission right simultaneous feasibility testing method when the computer programs are run on a computer.
The computer readable media of the embodiments of the present application may be computer readable signal media or computer readable storage media or any combination of the two. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable read-only memory (CDROM). Additionally, the computer-readable storage medium may even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware that is related to instructions of a program, and the program may be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. A method for testing simultaneous feasibility of financial power transmission rights is characterized by comprising the following steps:
acquiring initial power transmission capacity and network constraint data of a power transmission line, and constructing a power transmission model by using the initial power transmission capacity and the network constraint data;
solving the power transmission model by taking the lowest total power generation cost as a target according to the quoted price of a power plant;
and calculating the unit power generation amount distributed to each node in the power transmission network from the planned power amount based on the result obtained by solving the power transmission model.
2. The method for testing the simultaneous feasibility of financial power transmission rights according to claim 1, wherein said constructing a power transmission model using said initial power transmission capacity and said network constraint data comprises:
selecting three power generation nodes in a power grid topological structure and determining line impedance and transmission capacity among the three power generation nodes so as to construct a three-node power transmission model;
and calculating a power transmission feasible set according to the power transmission line constraint of the three-node power transmission model.
3. The method for testing the simultaneous feasibility of financial power transmission rights according to claim 1, wherein the solving of the power transmission model with the aim of minimizing the total cost of power generation according to the price quoted by the power plant comprises:
calculating the sum of the product of the generated energy of each power plant and the quoted price to obtain the total power generation cost; wherein the total power generation cost is equal to the planned power purchasing cost plus the market power purchasing cost.
4. The method for testing the simultaneous feasibility of financial transmission rights according to claim 2, wherein the power transmission model is solved with the aim of minimizing the total cost of power generation according to the price quoted by the power plant, specifically:
is M according to the quoted price of the power plantA、MBAnd MCThe transmission capacity and line impedance of the line are respectively C1、C2、C3、Z1、Z2、Z3And the load of one node is L, and the power generation capacity of the power plant and the transmission capacity of the planned power occupying line are calculated in the following mode:
MinM＝MAGA+MBGB+MCGC(7)
Figure FDA0002329350630000011
Figure FDA0002329350630000021
Figure FDA0002329350630000022
L＝GA+GB+GC+X (11)
wherein the minimum total power generation cost is MinM, the regional planned electric quantity is X, and the transmission capacities of the lines occupied by the planned electric quantity are X respectively1、X2And X3Electric power generation G of power plantA、GBAnd GC。
5. The method for testing simultaneous feasibility of financial transmission rights according to claim 2, wherein the step of calculating the unit power generation amount distributed from the planned power amount to each node in the power transmission network based on the result obtained by solving the transmission model comprises:
constructing a line model by using a source flow analysis method based on a direct current distribution factor and taking one node C of a power grid topological structure as a reference point:
X＝ΔGA+ΔGB+ΔGC(12)
ΔXA-AB＝ΔGA×AA-AB(13)
ΔXA-AC＝ΔGA×AA-AC(14)
ΔXA-BC＝ΔGA×AA-BC(15)
ΔXB-BA＝ΔGB×AB-BA(16)
ΔXB-BC＝ΔGB×AB-BC(17)
ΔXB-AC＝ΔGB×AB-AC(18)
wherein the planned electric quantity of the region is X, delta GA、ΔGBAnd Δ GCFor the unit power generation, Δ X, distributed from the planned powerA-AB、ΔXA-AC、ΔXA-BC、ΔXB-BA、ΔXB-BCAnd Δ XB-ACRespectively representing the effects of node A and node B on line power, AA-AB、AA-BC、AA-AC、AB-BA、AB-ACAnd AB-BCAnd the power generation transfer distribution factors of the node A and the node B to each branch are respectively.
6. The method for testing the simultaneous feasibility of financial transmission rights according to claim 5, wherein the power generation transfer distribution factor is calculated by:
Figure FDA0002329350630000031
Figure FDA0002329350630000032
Figure FDA0002329350630000033
Figure FDA0002329350630000034
Figure FDA0002329350630000035
Figure FDA0002329350630000036
wherein A isA-AB、AA-BC、AA-AC、AB-BA、AB-ACAnd AB-BCRespectively are power generation transfer distribution factors of the node A and the node B to each branch, and the line impedance corresponding to each line is Z1、Z2、Z3。
7. The method for testing simultaneous feasibility of financial transmission rights according to claim 5, wherein the step of calculating the unit power generation amount distributed from the planned power amount to each node in the power transmission network based on the result obtained by solving the transmission model further comprises the steps of:
and (3) utilizing the transmission capacity of the line occupied by the planned electric quantity obtained by solving the transmission model, and measuring the influence of the power generation node on the line power by the following modes:
|ΔXA-AB－ΔXB-BA|＝X1(25)
ΔXA-AC+ΔXB-AC＝X2(26)
ΔXA-BC+ΔXB-BC＝X3(27)
wherein, Δ XA-AB、ΔXA-AC、ΔXA-BC、ΔXB-BA、ΔXB-BCAnd Δ XB-ACRespectively representing the influence of the node A and the node B on the line power, wherein the transmission capacity of the line occupied by the planned electric quantity is X1、X2And X3。
8. A financial transmission right simultaneous feasibility testing device is characterized by comprising:
the modeling module is used for acquiring initial transmission capacity and network constraint data of the transmission line and constructing a transmission model by using the initial transmission capacity and the network constraint data;
the operation module is used for solving the power transmission model by taking the lowest total power generation cost as a target according to the quotation of a power plant;
and the output module is used for calculating the unit power generation amount distributed to each node in the power transmission network from the planned power amount based on the result obtained by solving the power transmission model.
9. A financial transmission right simultaneous feasibility testing apparatus comprising a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the financial transmission right simultaneous feasibility testing method according to any one of claims 1 to 7 when executing the computer program.
10. A storage medium for a simultaneous feasibility testing method of financial transmission rights, the storage medium storing one or more computer programs, the one or more computer programs comprising program code for performing the simultaneous feasibility testing method of financial transmission rights as claimed in any one of claims 1 to 7 when the computer programs are run on a computer.
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