CN112991086A - Power price visualization analysis method and system for power spot market node - Google Patents
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Abstract
The invention discloses a visualized analysis method and a visualized analysis system for the electricity price of a power spot market node, wherein the method comprises the following steps: obtaining model parameters and clearing results of electric power spot market clearing calculation; forming a power price dynamic partition according to the blocking line and the clearing model, wherein the power price dynamic partition meets the following conditions: all nodes in the subareas are communicated; all nodes in the subareas have power flow transfer factors with approximate values to any blocking lines; rendering the dynamic power price partition range on the GIS, and simultaneously superposing a blocking line and the shadow price thereof, and a marginal unit and the marginal price thereof on the GIS; and according to the geographical coordinates of the station to which the node belongs, node electricity price information and a tide transfer factor of the node to the blocking line are displayed in an overlapping mode on the GIS, wherein the node electricity price information specifically comprises a node electricity price value, a blocking component value and a network loss component value. The technical scheme can solve the practical engineering problem that the node electricity price in the electric power spot market is difficult to be intuitively understood and verified by market members and operating organizations.
Description
Technical Field
The invention belongs to the technical field of electric power spot market, and particularly relates to a method and a system for visually analyzing the electricity price of an electric power spot market node.
Background
The electric power spot market is an important component of the electric power market, aims at maximizing social benefits, adopts a centralized bidding and unified clearing mode to form a power generation and utilization plan and power price, is favorable for promoting market competition, and can reasonably guide investment through price signals to achieve optimal resource allocation. The node electricity price is composed of an energy component, a blocking component and a network loss component, and is regarded as a scientific pricing mechanism because the influence of network blocking and network loss on the node marginal cost can be accurately reflected, but the node electricity price is calculated in a complex manner, in the actual execution process, the rationality of market members and operation mechanisms on the node electricity price is difficult to analyze and is difficult to confirm and understand easily, and the efficient operation of the power spot market is influenced to a certain extent.
After the Safety Constraint Economic Dispatch (SCED) calculation of the electric power spot market is carried out, the Lagrange multiplier of system load balance constraint, network loss constraint and line and section power flow constraint in each time period can be obtained, and the node electricity price can be calculated according to the following formula on the basis:
wherein:
λ: lagrange multipliers for system load balancing constraints;
LF: a loss of network sensitivity factor;
in the operation of the electric power spot market, how to accurately and efficiently analyze the rationality of the node electricity price LMP and visually display the node electricity price LMP through a visualization technology is a technical problem to be solved by technical personnel in the field.
Disclosure of Invention
The invention aims to provide a method and a system for visually analyzing the node electricity price of a power spot market, which can solve the practical engineering problem that the node electricity price in the power spot market is difficult to be intuitively understood and verified by market members and operating organizations.
In order to achieve the above purpose, the solution of the invention is:
a power price visualization analysis method for a power spot market node comprises the following steps:
step S110, obtaining model parameters and clearing results of clearing calculation of the electric power spot market, wherein the clearing results comprise node electricity prices, blocked lines and shadow prices thereof, and marginal units and marginal prices thereof;
step S120, forming a power price dynamic partition according to the blocking line and the clearing model, wherein the power price dynamic partition meets the following conditions: all nodes in the subareas are communicated; all nodes in the subareas have power flow transfer factors with approximate values to any blocking lines;
step S130, rendering the dynamic power price partition range on the GIS, and simultaneously superposing a blocking line and the shadow price thereof, a marginal unit and the marginal price thereof on the GIS, wherein the marginal price is a declaration price corresponding to the clear power of the marginal unit;
and S140, according to the geographical coordinates of the station to which the node belongs, node power price information and a load flow transfer factor of the node to the blocking line are displayed in an overlapping mode on the GIS, wherein the node power price information specifically comprises a node power price value, a blocking component value and a network loss component value.
In the step S120, the specific content of forming the electricity price dynamic partition according to the blocking line and the clearing model is as follows: and taking nodes on two sides of the blocked line as search starting points, performing depth-first or breadth-first search according to the principle that all nodes in the subarea are communicated and all nodes in the subarea have flow transfer factors with numerical values close to any blocked line, and finally determining all subarea boundaries so as to form dynamic subareas.
In step S130, the specific content of rendering the dynamic electricity price partition range on the GIS is as follows: according to the membership relation between the nodes and the dynamic electricity price partition, all the nodes in each partition are traversed respectively, the icon styles of the plant stations to which the nodes belong are modified, all the plant stations in the same dynamic partition are ensured to have the same icon style, and plant station icons of different dynamic partitions have different icon styles, so that the rendering of the dynamic partition range is realized.
In step S140, the specific contents of displaying node electricity price information and the tidal current transfer factor of the node to the blocking line in a superimposed manner on the GIS are as follows: and after the plant station icon is clicked on the GIS, acquiring nodes contained in the plant station and popping up a dialog box, and displaying the power flow transfer factor of the node pair on the blocking line in the dialog box by adopting a two-dimensional table.
A power spot market node electricity price visualization analysis system comprises:
the system comprises an information acquisition module, a data processing module and a data processing module, wherein the information acquisition module is used for acquiring model parameters and clearing results of electric power spot market clearing calculation, and the clearing results comprise node electricity prices, blocked lines and shadow prices thereof, and marginal units and marginal prices thereof;
the dynamic partition calculation module is used for forming a power price dynamic partition according to the blocking line and the clearing model;
the dynamic partitioning and blocking visualization module is used for rendering the dynamic partitioning range of the electricity price on the GIS, and simultaneously superposing a blocking line and the shadow price thereof, and a marginal unit and the marginal price thereof on the GIS; and the number of the first and second groups,
and the transfer factor visualization module is used for searching out non-blocking branches meeting the power price partition conditions from the non-blocking lines, bringing the non-blocking boundary branches into the non-blocking boundary branch set, and displaying node power price information and a load flow transfer factor of the node pair blocking lines on the GIS in an overlapping mode according to the geographical coordinates of the station to which the node belongs.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the analysis method as described above when executing the computer program.
The computer device further comprises a combination of one or more of at least one power source, at least one wired or wireless network interface, at least one input-output interface, and at least one operating system.
The operating system is LinuxTM，UnixTM，WindowsTMOr Mac OS XTM。
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the analysis method as set forth above.
After the scheme is adopted, aiming at the practical engineering problem that the reasonability of the node electricity price is difficult to analyze, firstly, model parameters, the node electricity price, the blocked line, the shadow price, the marginal unit and marginal price data of the marginal unit are obtained, then, an electricity price dynamic partition is formed according to the blocked line and the clearing model, all nodes in the partition are ensured to be communicated, and all nodes in the partition have flow transfer factors with values close to any blocked line. On the basis, a dynamic power price partition range is rendered by using the GIS, a blocking line and shadow price thereof, a marginal unit and marginal price thereof are superimposed on the GIS, and node power price information and a tide transfer factor of the node to the blocking line are displayed in a superimposed manner on the GIS. Based on the visual analysis method, the rationality of the node electricity price can be accurately and efficiently analyzed, and reliable support is provided for electric power spot market scheduling operators to accurately master market electricity price real-time distribution, market operation health conditions and market scheduling decisions. The invention also provides a power spot market node power price visualization analysis system, equipment and a computer readable storage medium, which have the beneficial effects.
Drawings
FIG. 1 is a schematic flow chart diagram of a power spot market node electricity price visualization analysis method of the present invention in one embodiment thereof;
FIG. 2 is a flow diagram of a power spot market node electricity price visualization analysis method of the present invention in one embodiment thereof;
FIG. 3 is a flow diagram of a power spot market node electricity price visualization analysis method of the present invention in one embodiment thereof;
FIG. 4 is a schematic flow diagram of the power spot market node electricity price visualization analysis system of the present invention in one embodiment thereof;
FIG. 5 is a schematic diagram of the structure of a computer device of the present invention in one embodiment.
Detailed Description
The present invention will be described in further detail with reference to preferred embodiments and the accompanying drawings. It is to be understood that the following examples are illustrative only and are not intended to limit the present invention. 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.
As shown in fig. 1, the flow diagram of an embodiment of a visualized analysis method for node electricity prices of a power spot market provided by the present invention is shown, and the visualized analysis method for node electricity prices in the embodiment of the present invention includes the following steps:
step S110, obtaining model parameters and clearing results of clearing calculation of the electric power spot market, wherein the clearing results comprise node electricity prices, blocked lines and shadow prices thereof, and marginal units and marginal prices thereof;
specifically, in the clearing of the electric power spot market, a mixed integer linear programming method is generally adopted for solving, and the clearing result obtained by solving not only comprises a unit output plan and a node electricity price, but also can obtain a blocking line and a shadow price thereof according to a constraint relaxation condition. In addition, the marginal unit and the marginal price thereof can be found according to the mathematical meaning of the marginal unit after finishing the clearing.
Step S120, forming a power price dynamic partition according to the blocking line and the clearing model, wherein the power price dynamic partition meets the following conditions: 1) all nodes in the subareas are communicated; 2) all nodes in the subarea have power flow transfer factors with approximate values to any blocking line;
specifically, the blocking line is used as an initial boundary of the dynamic electricity price partition, nodes on two sides of the blocking line are used as search starting points, depth-first or breadth-first search is conducted according to the principle that all nodes in the partition are communicated and all nodes in the partition have flow transfer factors with approximate values to any blocking line, and finally all partition boundaries are determined, so that the dynamic partition is formed.
Step S130, rendering the dynamic power price partition range on the GIS, and simultaneously superposing a blocking line and the shadow price thereof, a marginal unit and the marginal price thereof on the GIS, wherein the marginal price is a declaration price corresponding to the clear power of the marginal unit;
specifically, after the dynamic partition is obtained in the previous step, the embodiment first renders the dynamic partition range on the GIS. The blocking line is used as the boundary of the dynamic subarea, and the power transmission marginal cost between the subareas can be visually embodied by overlapping the blocking line and the shadow price thereof on the GIS. The marginal unit is located inside each subarea, and the influence degree of the electricity price of the internal node of each subarea by the marginal unit inside each subarea can be visually embodied by displaying the marginal unit in a superposition mode.
Step S140, according to the geographical coordinates of the station to which the node belongs, node power price information and a load flow transfer factor of the node to a blocking line are displayed in an overlapping mode on a GIS, wherein the node power price information specifically comprises a node power price value, a blocking component value and a network loss component value;
specifically, the electric power spot market clearing calculation model includes a load flow transfer factor of each node to each line, in this embodiment, node electricity price information is displayed on the GIS in an overlapping manner, and then the load flow transfer factor of each node to a blocked line is obtained from the clearing calculation model and displayed together with the node electricity prices, so that the influence degree of the partition internal node electricity prices on the partition boundary blocked lines can be visually analyzed.
Fig. 2 is a flowchart illustrating a specific implementation manner of step S130 according to an embodiment of the present invention. As shown in fig. 3, in one embodiment, step S130 specifically includes:
step S131, according to the membership relation between the nodes and the dynamic electricity price partition, respectively traversing all the nodes in each partition, modifying the icon styles of the plant stations to which the nodes belong, ensuring that all the plant stations in the same dynamic partition have the same icon style, and the plant station icons of different dynamic partitions have different icon styles, thereby realizing the rendering of the dynamic partition range;
specifically, by searching and modifying the icon styles of all the stations in the same dynamic partition, the visualization of the dynamic partition range can be realized, and the rendering of the dynamic partition range can be realized.
And S132, superposing the blocking line and the shadow price thereof, the marginal unit and the marginal price thereof on the GIS, wherein the marginal price is a declaration price corresponding to the clear power output of the marginal unit.
In one embodiment, as shown in fig. 3, step S140 specifically includes:
and step S141, according to the geographical coordinates of the station to which the node belongs, node power price information is displayed in an overlaying mode on a GIS, wherein the node power price information specifically comprises a node power price value, a blocking component value and a network loss component value. And after the plant station icon is clicked on the GIS, acquiring nodes contained in the plant station and popping up a dialog box, and displaying the power flow transfer factor of the node pair on the blocking line in the dialog box by adopting a two-dimensional table.
Specifically, a plurality of nodes in the same station generally have the same or very close node electricity prices, and therefore in this embodiment, the node electricity prices of any high-voltage side bus in the station are directly adopted to represent the electricity prices of the station, and are displayed in a superimposed manner on the GIS. And possibly, a plurality of blocking lines exist, after the plant station icon is clicked on the GIS, the nodes contained in the plant station are obtained, a dialog box is popped up, and the two-dimensional table is adopted in the dialog box to display the load flow transfer factor of the nodes to the plurality of blocking lines.
On the basis of the detailed description of the various embodiments corresponding to the power price visualization analysis method of the power spot market node, the invention also discloses a power spot market power price partition calculation system corresponding to the method.
Fig. 4 is a schematic structural diagram of a power spot market node power price visualization analysis system according to an embodiment of the present invention. As shown in fig. 5, the power spot market node electricity price visualization analysis system includes:
the system comprises an information acquisition module, a data processing module and a data processing module, wherein the information acquisition module is used for acquiring model parameters and clearing results of electric power spot market clearing calculation, and the clearing results comprise node electricity prices, blocked lines and shadow prices thereof, and marginal units and marginal prices thereof;
the dynamic partition calculation module is used for forming a power price dynamic partition according to the blocking line and the clearing model;
the dynamic partitioning and blocking visualization module is used for rendering the dynamic partitioning range of the electricity price on the GIS, and simultaneously superposing a blocking line and the shadow price thereof, and a marginal unit and the marginal price thereof on the GIS;
and the transfer factor visualization module is used for searching out non-blocking branches meeting the power price partition conditions from the non-blocking lines, bringing the non-blocking boundary branches into the non-blocking boundary branch set, and displaying node power price information and a load flow transfer factor of the node pair blocking lines on the GIS in an overlapping mode according to the geographical coordinates of the station to which the node belongs.
The power spot market node power price visualization system can execute the power spot market node power price visualization method provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. According to the system, the invention further provides a computer device, which is described in detail below with reference to the accompanying drawings and preferred embodiments.
FIG. 5 is a schematic diagram of a computer device according to an embodiment of the present invention. As shown in fig. 5, the computer device 500 in this embodiment may have a large difference due to different configurations or performances, and may include one or more processors (CPUs) 510, one or more memories 520, and a storage medium 530 storing an application 532 or data 533, wherein the processor may implement all the method steps in the method embodiment of the present invention when executing the program on the storage medium 530.
The storage medium is used for storing a program (instruction) of the power spot market node power price visualization method provided by the embodiment of the invention, wherein the power spot market node power price visualization method provided by the embodiment of the invention can be executed by executing the program, and the method has corresponding beneficial effects of the execution method. Reference may be made to the description of the above method embodiments, which are not repeated herein.
The power spot market node price visualization apparatus 500 may also include one or more power supplies 540, one or more wired or wireless network interfaces 550, one or more input-output interfaces 560, one or more operating systems 531, which may be LinuxTM，UnixTM，WindowsTM，Mac OS XTMAnd so on.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A power price visualization analysis method for a power spot market node is characterized by comprising the following steps:
step S110, obtaining model parameters and clearing results of clearing calculation of the electric power spot market, wherein the clearing results comprise node electricity prices, blocked lines and shadow prices thereof, and marginal units and marginal prices thereof;
step S120, forming a power price dynamic partition according to the blocking line and the clearing model, wherein the power price dynamic partition meets the following conditions: all nodes in the subareas are communicated; all nodes in the subareas have power flow transfer factors with approximate values to any blocking lines;
step S130, rendering the dynamic power price partition range on the GIS, and simultaneously superposing a blocking line and the shadow price thereof, a marginal unit and the marginal price thereof on the GIS, wherein the marginal price is a declaration price corresponding to the clear power of the marginal unit;
and S140, according to the geographical coordinates of the station to which the node belongs, node power price information and a load flow transfer factor of the node to the blocking line are displayed in an overlapping mode on the GIS, wherein the node power price information specifically comprises a node power price value, a blocking component value and a network loss component value.
2. The assay of claim 1, wherein: in step S120, the specific content of forming the electricity price dynamic partition according to the blocking line and the clearing model is as follows: and taking nodes on two sides of the blocked line as search starting points, performing depth-first or breadth-first search according to the principle that all nodes in the subarea are communicated and all nodes in the subarea have flow transfer factors with numerical values close to any blocked line, and finally determining all subarea boundaries so as to form dynamic subareas.
3. The assay of claim 1, wherein: in step S130, the specific content of rendering the dynamic electricity price partition range on the GIS is: according to the membership relation between the nodes and the dynamic electricity price partition, all the nodes in each partition are traversed respectively, the icon styles of the plant stations to which the nodes belong are modified, all the plant stations in the same dynamic partition are ensured to have the same icon style, and plant station icons of different dynamic partitions have different icon styles, so that the rendering of the dynamic partition range is realized.
4. The assay of claim 1, wherein: in step S140, the specific contents of displaying node electricity price information and the tidal current transfer factor of the node to the blocking line in a superimposed manner on the GIS are as follows: and after the plant station icon is clicked on the GIS, acquiring nodes contained in the plant station and popping up a dialog box, and displaying the power flow transfer factor of the node pair on the blocking line in the dialog box by adopting a two-dimensional table.
5. A power spot market node electricity price visualization analysis system is characterized by comprising:
the system comprises an information acquisition module, a data processing module and a data processing module, wherein the information acquisition module is used for acquiring model parameters and clearing results of electric power spot market clearing calculation, and the clearing results comprise node electricity prices, blocked lines and shadow prices thereof, and marginal units and marginal prices thereof;
the dynamic partition calculation module is used for forming a power price dynamic partition according to the blocking line and the clearing model;
the dynamic partitioning and blocking visualization module is used for rendering the dynamic partitioning range of the electricity price on the GIS, and simultaneously superposing a blocking line and the shadow price thereof, and a marginal unit and the marginal price thereof on the GIS; and the number of the first and second groups,
and the transfer factor visualization module is used for searching out non-blocking branches meeting the power price partition conditions from the non-blocking lines, bringing the non-blocking boundary branches into the non-blocking boundary branch set, and displaying node power price information and a load flow transfer factor of the node pair blocking lines on the GIS in an overlapping mode according to the geographical coordinates of the station to which the node belongs.
6. A computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein: the processor, when executing the computer program, realizes the steps of the analysis method according to claims 1-4.
7. The computer device of claim 6, wherein: the computer device further comprises a combination of one or more of at least one power source, at least one wired or wireless network interface, at least one input-output interface, and at least one operating system.
8. The computer device of claim 7, wherein: the operating system is LinuxTM，UnixTM，WindowsTMOr Mac OS XTM。
9. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program realizes the steps of the analysis method as claimed in claims 1-4 when executed by a processor.
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| CN113554528A (en) * | 2021-07-29 | 2021-10-26 | 云南电网有限责任公司 | Method and system for analyzing electric power spot market clearing result |
| CN113792995A (en) * | 2021-08-26 | 2021-12-14 | 中国南方电网有限责任公司 | Method, device, equipment and storage medium for determining power resource dominance degree |
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| CN105844367A (en) * | 2016-04-08 | 2016-08-10 | 国电南瑞科技股份有限公司 | Sensitivity factor based calculating method for power grid node marginal pricing |
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| CN113554528A (en) * | 2021-07-29 | 2021-10-26 | 云南电网有限责任公司 | Method and system for analyzing electric power spot market clearing result |
| CN113792995A (en) * | 2021-08-26 | 2021-12-14 | 中国南方电网有限责任公司 | Method, device, equipment and storage medium for determining power resource dominance degree |
| CN113792995B (en) * | 2021-08-26 | 2024-02-27 | 中国南方电网有限责任公司 | Method, device, equipment and storage medium for determining power resource dominance degree |
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