CN115827718A - Panorama display method and device for inertia of electric power system - Google Patents
Panorama display method and device for inertia of electric power system Download PDFInfo
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Abstract
A power system inertia panorama display method and device are provided, the method comprises: acquiring source, load and storage information of a power system; analyzing by adopting a topological algorithm based on the source, load and storage information to obtain the topological connection relation of the source, load and storage equipment; classifying the electrical islands based on the topological connection relation to obtain a plurality of electrical islands; acquiring inertia characteristics of all source, load and storage equipment in each electrical island, and calculating to obtain inertia information of each electrical island and inertia information of all source, load and storage equipment in each electrical island; and carrying out panoramic display on the inertia information of each electrical island and the inertia information of all the source, load and storage equipment in each electrical island. The method and the device provided by the embodiment of the invention fill the blank of the prior art, can realize the display and analysis of the current resources while monitoring the inertia resources possibly existing in the power grid, and have important significance for monitoring the inertia level of the system and maintaining the frequency stability of the system.
Description
Technical Field
The invention relates to the technical field of power system frequency stabilization, in particular to a power system inertia panorama display method and device.
Background
Climate change assessment reports issued by the united nations government climate change committee (IPCC) and indicating that humans acquire energy by burning fossil fuels results in global temperatures 1.1 degrees celsius higher than pre-industrialization levels, while continuing to heat up for the next two decades. With this annotated trajectory, extreme weather occurrences will become more frequent and apparent around the world. It is reported that countries are called for cooperative efforts to reduce the emission of carbon dioxide into the atmosphere. Energy activities are often the most dominant emissions source for carbon emissions. The power industry is the biggest carbon dioxide emission source in China at present and is the decisive field for coping with climate change. In the transition of the power industry, clean energy will be developed at a faster rate. In the aspect of primary energy structure, the non-fossil energy accounts for more than 50% in 2040 years, which becomes the main energy supply in China, and the proportion of the non-fossil energy to the primary energy in 2060 years is expected to be as high as 80%. With the replacement of the traditional synchronous generator by new energy, the new energy does not have rotational inertia at present, and the rotational inertia of a power grid is reduced year by year. In addition, the new energy has intermittence and fluctuation, the influence of weather and day and night on active output is large, the frequency modulation burden of the system is increased, and the system frequency stability is greatly influenced. Various sources, loads and storage equipment of a novel power system are expected to have inertia characteristics in the future, however, no method for monitoring the inertia characteristics of the system and displaying the monitored results in a panoramic mode exists at present.
Disclosure of Invention
In view of the above, the invention provides a panoramic display method and device for inertia of an electric power system, so as to realize system inertia characteristic monitoring and panoramic display of monitoring results, and solve the problem that the related technology is blank.
In a first aspect, an embodiment of the present invention provides a power system inertia panorama display method, including: acquiring source, load and storage information of a power system; analyzing by adopting a topological algorithm based on the source, load and storage information to obtain a topological connection relation of the source, load and storage equipment; classifying the electrical islands based on the topological connection relation to obtain a plurality of electrical islands; acquiring inertia characteristics of all source, load and storage equipment in each electrical island, and calculating to obtain inertia information of each electrical island and inertia information of all source, load and storage equipment in each electrical island based on the inertia characteristics of all source, load and storage equipment in each electrical island; and carrying out panoramic display on the inertia information of each electrical island and the inertia information of all the source, load and storage equipment in each electrical island.
Further, the obtaining inertia characteristics of all the source, load, and storage devices in each electrical island, and calculating to obtain inertia information of each electrical island and inertia information of all the source, load, and storage devices in each electrical island based on the inertia characteristics of all the source, load, and storage devices in each electrical island includes: acquiring the rotational inertia of all generators in each electrical island and the frequency dynamics of all energy storage devices, fans, photovoltaic power generation and loadsA response characteristic; calculating to obtain the rotational inertia W of the generator of each electrical island based on the rotational inertia of all the generators in each electrical island 1 And calculating to obtain the equivalent rotational inertia W of the energy storage equipment, the fan, the photovoltaic power generation and the load of each electrical island based on the frequency dynamic response characteristics of all the energy storage equipment, the fan, the photovoltaic power generation and the load in each electrical island 2 、W 3 、W 4 And W 5 (ii) a The rotational inertia W of the generator based on each electrical island 1 And equivalent rotational inertia W of energy storage equipment, fan, photovoltaic power generation and load of each electric island 2 、W 3 、W 4 、W 5 Calculating to obtain the equivalent inertia W of the whole network of each electric island; based on the rotational inertia of all generators in each electrical island and the frequency dynamic response characteristics of all energy storage equipment, fans, photovoltaic power generation and loads, the minimum inertia W of each electrical island is obtained through simulation calculation min (ii) a Equivalent inertia W and minimum inertia W of the whole network based on each electric island min Obtaining the inertia safety interval [ W ] of each electric island min ,W]And calculating the inertia margin w of each electric island by adopting the following formula:
further, the panoramic display of the inertia information of each electrical island and the inertia information of all the source, load and storage devices in each electrical island includes: generating a visual chart corresponding to a preset visual display type according to the preset visual display type based on the inertia information of each electrical island and the inertia information of all the source, load and storage equipment in each electrical island; and generating a visualization chart corresponding to the type of the visualization showing request based on the inertia information of each electric island and the inertia information of all the source equipment, the load equipment and the storage equipment in each electric island in response to the type of the visualization showing request.
Further, the visualization chart comprises: tables, electrical topographs, geographic maps, histograms, bar graphs, pie graphs, bubble graphs, radar charts, rectangular tree graphs, and box line graphs.
Further, after the panoramic display of the inertia information of each electrical island and the inertia information of all the source, load, and storage devices in each electrical island, the method further includes: and responding to the storage request, and storing the panoramic display result.
In a second aspect, an embodiment of the present invention further provides a power system inertia panorama display apparatus, including: the information acquisition unit is used for acquiring source, load and storage information of the power system; the topology analysis unit is used for analyzing by adopting a topology algorithm based on the source, load and storage information to obtain the topological connection relation of the source, load and storage equipment; the electric island classification unit is used for classifying the electric islands based on the topological connection relation to obtain a plurality of electric islands; the inertia information calculation unit is used for acquiring inertia characteristics of all the source, load and storage equipment in each electrical island, and calculating inertia information of each electrical island and inertia information of all the source, load and storage equipment in each electrical island based on the inertia characteristics of all the source, load and storage equipment in each electrical island; and the panoramic display unit is used for carrying out panoramic display on the inertia information of each electrical island and the inertia information of all the source, load and storage equipment in each electrical island.
Further, the inertia information calculating unit is further configured to: acquiring the rotational inertia of all generators in each electrical island and the frequency dynamic response characteristics of all energy storage equipment, fans, photovoltaic power generation and loads; calculating to obtain the rotational inertia W of the generator of each electrical island based on the rotational inertia of all the generators in each electrical island 1 And calculating to obtain the equivalent rotational inertia W of the energy storage equipment, the fan, the photovoltaic power generation and the load of each electrical island based on the frequency dynamic response characteristics of all the energy storage equipment, the fan, the photovoltaic power generation and the load in each electrical island 2 、W 3 、W 4 And W 5 (ii) a The moment of inertia W of the generator based on each electrical island 1 And the energy storage device of each electrical island,Equivalent rotational inertia W of fan, photovoltaic power generation and load 2 、W 3 、W 4 、W 5 Calculating to obtain the equivalent inertia W of the whole network of each electric island; based on the rotational inertia of all generators in each electrical island and the frequency dynamic response characteristics of all energy storage equipment, fans, photovoltaic power generation and loads, the minimum inertia W of each electrical island is obtained through simulation calculation min (ii) a Equivalent inertia W and minimum inertia W of the whole network based on each electric island min Obtaining the inertia safety interval [ W ] of each electric island min ,W]And calculating the inertia margin w of each electric island by adopting the following formula:
further, the panorama display unit is further configured to: generating a visual chart corresponding to a preset visual display type according to the preset visual display type based on the inertia information of each electrical island and the inertia information of all the active, load and storage devices in each electrical island; and responding to the type of the visualization display request, and generating a visualization chart corresponding to the type of the visualization display request based on the inertia information of each electrical island and the inertia information of all the source equipment, the load equipment and the storage equipment in each electrical island.
Further, the visualization chart includes: tables, electrical topologies, geographies, histograms, bars, pie charts, bubble charts, radar charts, rectangular tree diagrams, and box line diagrams.
Further, the apparatus further comprises: and the storage unit is used for responding to the storage request and storing the panoramic display result.
In a third aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is configured to, when executed by a processor, implement the method provided by the embodiments of the present invention.
According to the method and the device for displaying the panoramic inertia of the power system, all the source equipment, the load equipment and the storage equipment are divided into the plurality of electric islands by using the topological algorithm and the electric island classification, various inertia information is obtained by calculating each electric island as a unit, and the various inertia information is displayed in a panoramic mode.
Drawings
Fig. 1 is a flowchart of a power system inertia panorama display method according to an exemplary embodiment of the present invention;
fig. 2 is a schematic structural diagram of an inertia panorama display device of an electric power system according to an exemplary embodiment of the present invention.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
Fig. 1 is a flowchart of a power system inertia panorama display method according to an exemplary embodiment of the present invention.
As shown in fig. 1, the method includes:
step S101: and acquiring source, load and storage information of the power system.
In the embodiment of the invention, the source, load and storage information of the power system can comprise physical information, startup and shutdown information, topological information, output information, active and reactive power, nameplate information and various dynamic response simulation experiment data of various sources, loads and storage equipment places of the power system.
Step S102: and analyzing by adopting a topological algorithm based on the source, load and storage information to obtain the topological connection relation of the source, load and storage equipment.
In the embodiment of the invention, the topological connection relation of all the source, load and storage equipment is obtained by utilizing the topological algorithm analysis, namely the electrical topological diagram of all the source, load and storage equipment can be obtained.
Step S103: and classifying the electrical islands based on the topological connection relation to obtain a plurality of electrical islands.
In the embodiment of the invention, each electric island can comprise at least one of source, load and storage devices, and each electric island can comprise more than one device for any one of the source, load and storage devices. Electrical connections exist for all devices of each electrical island.
Step S104: inertia characteristics of all the source, load and storage equipment in each electrical island are obtained, and inertia information of each electrical island and inertia information of all the source, load and storage equipment in each electrical island are obtained through calculation based on the inertia characteristics of all the source, load and storage equipment in each electrical island.
Further, step S104 includes:
acquiring the rotational inertia of all generators in each electrical island and the frequency dynamic response characteristics of all energy storage equipment, fans, photovoltaic power generation and loads;
calculating to obtain the rotational inertia W of the generator of each electrical island based on the rotational inertia of all the generators in each electrical island 1 And calculating to obtain the equivalent rotational inertia W of the energy storage equipment, the fan, the photovoltaic power generation and the load of each electrical island based on the frequency dynamic response characteristics of all the energy storage equipment, the fan, the photovoltaic power generation and the load in each electrical island 2 、W 3 、W 4 And W 5 ；
Moment of inertia W of generator based on each electrical island 1 And equivalent rotational inertia W of energy storage equipment, fan, photovoltaic power generation and load of each electric island 2 、W 3 、W 4 、W 5 Calculating to obtain the equivalent inertia W of the whole network of each electric island;
based on the rotational inertia of all generators in each electrical island and the frequency dynamic response characteristics of all energy storage equipment, fans, photovoltaic power generation and loads, the minimum inertia W of each electrical island is obtained through simulation calculation min ；
Equivalent inertia W and minimum inertia W of whole network based on each electric island min Obtaining the inertia safety interval [ W ] of each electric island min ,W]And calculating the inertia margin w of each electric island by adopting the following formula:
in the embodiment of the invention, the minimum inertia W of each electric island is obtained through calculation min This step, with calculation of W 1 、W 2 、W 3 、W 4 And W 5 And calculating W in no sequence min And W may be performed in parallel or sequentially. Wherein the minimum inertia W of each electrical island min The smallest inertia for frequency stabilization.
Specifically, the rotational inertia W of the generator of each electrical island can be obtained by adding the rotational inertia of all the generators in each electrical island 1 (ii) a Based on the frequency dynamic response characteristics of all energy storage devices in each electrical island, the equivalent moment of inertia W of the energy storage devices of each electrical island can be obtained through simulation calculation 2 (ii) a Based on the frequency dynamic response characteristics of all fans in each electrical island, the equivalent moment of inertia W of each fan in each electrical island can be obtained through simulation calculation 3 (ii) a Based on the frequency dynamic response characteristics of all photovoltaic power generation in each electrical island, the photovoltaic power generation of each electrical island can be obtained through simulation calculationElectric equivalent moment of inertia W 4 (ii) a Based on the frequency dynamic response characteristics of all the loads in each electrical island, the equivalent moment of inertia W of the load of each electrical island can be obtained by carrying out approximate prediction estimation through an artificial intelligence method or expert experience (knowledge base) 5 . W is to be 1 、W 2 、W 3 、W 4 And W 5 And accumulating to obtain the equivalent inertia W of the whole network.
Step S105: and carrying out panoramic display on the inertia information of each electrical island and the inertia information of all the source, load and storage equipment in each electrical island.
Further, step S105 includes:
generating a visual chart corresponding to a preset visual display type according to the preset visual display type based on the inertia information of each electrical island and the inertia information of all the active, load and storage equipment in each electrical island; and generating a visualization chart corresponding to the type of the visualization showing request based on the inertia information of each electric island and the inertia information of all the source equipment, the load equipment and the storage equipment in each electric island in response to the type of the visualization showing request.
In the embodiment of the invention, the moment of inertia W of the generator of each electric island obtained in the last step 1 Equivalent moment of inertia W of energy storage device 2 Equivalent moment of inertia W of fan 3 Equivalent inertia W of photovoltaic power generation 4 Equivalent moment of inertia W of load 5 Equivalent inertia W of the whole network, inertia safety interval [ W min ,W]And inertia margin w, different types of visual charts can be generated according to the requirements of visual display, such as tables, histograms, electrical topological diagrams, geographic diagrams and the like, so as to display the inertia of the power system in a panoramic way. Specifically, the electrical topological graph is a topological relation graph obtained by analyzing a topological algorithm, and on the basis, inertia information of all the source, load and storage devices obtained by calculation is superposed, so that the node position, the inertia value and the connection condition of inertia resources can be displayed on the electrical topological graph; superposing the calculated inertia information of all the source, load and storage devices on the geographical position diagramAnd furthermore, the positions, inertia and connection relations of various resources can be displayed.
Further, the visualization chart includes: tables, electrical topologies, geographies, histograms, bars, pie charts, bubble charts, radar charts, rectangular tree diagrams, and box line diagrams.
Further, after step S105, the method further includes:
step S106: and responding to the storage request, and storing the panoramic display result.
In the embodiment of the invention, the rotational inertia W of the generator of each electric island can be determined in response to the storage request 1 Equivalent moment of inertia W of energy storage device 2 Equivalent moment of inertia W of fan 3 Equivalent rotational inertia W of photovoltaic power generation 4 Equivalent moment of inertia W of load 5 Equivalent inertia W of the whole network, inertia safety interval [ W min ,W]The inertia information and the inertia margin w may be stored, or a visual chart generated from the inertia information may be stored.
According to the embodiment, all the source equipment, the load equipment and the storage equipment are divided into the plurality of electric islands by using a topological algorithm and electric island classification, various types of inertia information are obtained by calculating each electric island as a unit, and various types of inertia information are displayed in a panoramic mode.
Fig. 2 is a schematic structural diagram of a power system inertia panorama display apparatus according to an exemplary embodiment of the present invention.
As shown in fig. 2, the apparatus includes:
the information acquisition unit 201 is used for acquiring the source, load and storage information of the power system.
In the embodiment of the invention, the source, load and storage information of the power system can comprise physical information, startup and shutdown information, topological information, output information, active and reactive power, nameplate information and various dynamic response simulation experiment data of various sources, loads and storage equipment places of the power system.
And the topology analysis unit 202 is configured to perform analysis by using a topology algorithm based on the source, load, and storage information to obtain a topology connection relationship between the source, load, and storage devices.
In the embodiment of the invention, the topological connection relation of all the source, load and storage equipment is obtained by utilizing the topological algorithm analysis, namely the electrical topological diagram of all the source, load and storage equipment can be obtained.
And the electric island classification unit 203 is used for classifying the electric islands based on the topological connection relation to obtain a plurality of electric islands.
In the embodiment of the invention, each electric island can comprise at least one of source, load and storage devices, and each electric island can comprise more than one device for any one of the source, load and storage devices. Electrical connections exist for all devices of each electrical island.
The inertia information calculating unit 204 is configured to obtain inertia characteristics of all the sources, loads, and storage devices in each electrical island, and calculate inertia information of each electrical island and inertia information of all the sources, loads, and storage devices in each electrical island based on the inertia characteristics of all the sources, loads, and storage devices in each electrical island.
Further, the inertia information calculating unit 204 is further configured to:
acquiring the rotational inertia of all generators in each electrical island and the frequency dynamic response characteristics of all energy storage equipment, fans, photovoltaic power generation and loads;
calculating to obtain the rotational inertia W of the generator of each electrical island based on the rotational inertia of all the generators in each electrical island 1 And calculating to obtain the equivalent rotational inertia W of the energy storage equipment, the fan, the photovoltaic power generation and the load of each electrical island based on the frequency dynamic response characteristics of all the energy storage equipment, the fan, the photovoltaic power generation and the load in each electrical island 2 、W 3 、W 4 And W 5 ；
Moment of inertia W of generator based on each electrical island 1 And storage of each electrical islandEquivalent moment of inertia W of energy equipment, fan, photovoltaic power generation and load 2 、W 3 、W 4 、W 5 Calculating to obtain the equivalent inertia W of the whole network of each electric island;
based on the rotational inertia of all generators in each electrical island and the frequency dynamic response characteristics of all energy storage equipment, fans, photovoltaic power generation and loads, the minimum inertia W of each electrical island is obtained through simulation calculation min ；
Equivalent inertia W and minimum inertia W of whole network based on each electric island min Obtaining the inertia safety interval [ W ] of each electric island min ,W]And calculating the inertia margin w of each electric island by adopting the following formula:
in the embodiment of the invention, the minimum inertia W of each electric island is obtained through calculation min This step, with calculation of W 1 、W 2 、W 3 、W 4 And W 5 And calculating W in no sequence min And W may be performed in parallel or sequentially. Wherein the minimum inertia W of each electrical island min The smallest inertia for frequency stabilization.
Specifically, the rotational inertia W of the generator of each electrical island can be obtained by adding the rotational inertia of all the generators in each electrical island 1 (ii) a Based on the frequency dynamic response characteristics of all energy storage devices in each electrical island, the equivalent moment of inertia W of the energy storage device of each electrical island can be obtained through simulation calculation 2 (ii) a Based on the frequency dynamic response characteristics of all fans in each electrical island, the equivalent moment of inertia W of each fan in each electrical island can be obtained through simulation calculation 3 (ii) a Based on the frequency dynamic response characteristics of all photovoltaic power generation in each electrical island, the equivalent moment of inertia W of the photovoltaic power generation of each electrical island can be obtained through simulation calculation 4 (ii) a Based on the frequency dynamic response characteristics of all loads within each electrical islandThe equivalent moment of inertia W of the load of each electric island is obtained by carrying out rough prediction and estimation through an artificial intelligence method or expert experience (knowledge base) 5 . W is to be 1 、W 2 、W 3 、W 4 And W 5 And accumulating to obtain the equivalent inertia W of the whole network.
And the panoramic display unit 205 is used for performing panoramic display on the inertia information of each electrical island and the inertia information of all the source, load and storage devices in each electrical island.
Further, the panorama display unit 205 is further configured to:
generating a visual chart corresponding to a preset visual display type according to the preset visual display type based on the inertia information of each electrical island and the inertia information of all the active, load and storage equipment in each electrical island; and generating a visualization chart corresponding to the type of the visualization display request based on the inertia information of each electrical island and the inertia information of all the source, load and storage devices in each electrical island in response to the type of the visualization display request.
In the embodiment of the invention, the rotational inertia W of the generator of each electric island obtained by the inertia information calculation unit 1 Equivalent inertia W of energy storage device 2 Equivalent moment of inertia W of fan 3 Equivalent inertia W of photovoltaic power generation 4 Equivalent moment of inertia W of load 5 Equivalent inertia W of the whole network, inertia safety interval [ W min ,W]And inertia margin w, different types of visual charts can be generated according to the requirements of visual display, such as tables, histograms, electrical topological diagrams, geographic diagrams and the like, so as to display the inertia of the power system in a panoramic way. Specifically, the electrical topological graph is a topological relation graph obtained by analyzing a topological algorithm, and on the basis, inertia information of all the source, load and storage devices obtained by calculation is superposed, so that the node position, the inertia value and the connection condition of inertia resources can be displayed on the electrical topological graph; the calculated inertia information of all the source, load and storage equipment is superposed on the geographical position diagram, and then the positions, the inertia sizes and the connection of various resources can be displayedAnd (4) connecting.
Further, the visualization chart includes: tables, electrical topologies, geographies, histograms, bars, pie charts, bubble charts, radar charts, rectangular tree diagrams, and box line diagrams.
Further, the apparatus further comprises:
a saving unit 206, configured to respond to the saving request, and save the panorama display result.
In an embodiment of the invention, the moment of inertia W of the generator of each electrical island may be stored in response to a save request 1 Equivalent moment of inertia W of energy storage device 2 Equivalent moment of inertia W of fan 3 Equivalent rotational inertia W of photovoltaic power generation 4 Equivalent moment of inertia W of load 5 Equivalent inertia W of the whole network, inertia safety interval [ W min ,W]The inertia information and the inertia margin w may be stored, or a visual chart generated from the inertia information may be stored.
According to the embodiment, all the source equipment, the load equipment and the storage equipment are divided into the plurality of electric islands by using a topological algorithm and electric island classification, various types of inertia information are obtained by calculating each electric island as a unit, and various types of inertia information are displayed in a panoramic mode.
The invention also provides a computer-readable storage medium, which stores one or more programs, and when the program is executed by one or more processors, the program implements any one of the above power system inertia panorama display methods.
The invention has been described with reference to a few embodiments. However, other embodiments of the invention than the one disclosed above are equally possible within the scope of the invention, as would be apparent to a person skilled in the art from the appended patent claims.
Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a/an/the [ device, component, etc ]" are to be interpreted openly as referring to at least one instance of said device, component, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (11)
1. A panoramic display method for inertia of a power system is characterized by comprising the following steps:
acquiring source, load and storage information of a power system;
analyzing by adopting a topological algorithm based on the source, load and storage information to obtain a topological connection relation of the source, load and storage equipment;
classifying the electrical islands based on the topological connection relation to obtain a plurality of electrical islands;
acquiring inertia characteristics of all source, load and storage equipment in each electrical island, and calculating to obtain inertia information of each electrical island and inertia information of all source, load and storage equipment in each electrical island based on the inertia characteristics of all source, load and storage equipment in each electrical island;
and carrying out panoramic display on the inertia information of each electrical island and the inertia information of all the source, load and storage equipment in each electrical island.
2. The method of claim 1, wherein the obtaining inertia characteristics of all the source, load, and storage devices in each electrical island, and calculating inertia information of each electrical island and inertia information of all the source, load, and storage devices in each electrical island based on the inertia characteristics of all the source, load, and storage devices in each electrical island comprises:
acquiring the rotational inertia of all generators in each electrical island and the frequency dynamic response characteristics of all energy storage equipment, fans, photovoltaic power generation and loads;
calculating to obtain the rotational inertia W of the generator of each electrical island based on the rotational inertia of all the generators in each electrical island 1 And calculating to obtain the equivalent rotational inertia W of the energy storage equipment, the fan, the photovoltaic power generation and the load of each electrical island based on the frequency dynamic response characteristics of all the energy storage equipment, the fan, the photovoltaic power generation and the load in each electrical island 2 、W 3 、W 4 And W 5 ；
The moment of inertia W of the generator based on each electrical island 1 And equivalent rotational inertia W of energy storage equipment, fan, photovoltaic power generation and load of each electric island 2 、W 3 、W 4 、W 5 Calculating to obtain the equivalent inertia W of the whole network of each electric island;
based on the rotational inertia of all generators in each electrical island and the frequency dynamic response characteristics of all energy storage equipment, fans, photovoltaic power generation and loads, the minimum inertia W of each electrical island is obtained through simulation calculation min ；
Equivalent inertia W and minimum inertia W of the whole network based on each electric island min Obtaining the inertia safety interval [ W ] of each electric island min ,W]And calculating the inertia margin w of each electric island by adopting the following formula:
3. the method of claim 1, wherein the displaying the inertia information of each electrical island and the inertia information of all source, load, and storage devices in each electrical island in a panoramic manner comprises:
generating a visual chart corresponding to a preset visual display type according to the preset visual display type based on the inertia information of each electrical island and the inertia information of all the source, load and storage equipment in each electrical island; and generating a visualization chart corresponding to the type of the visualization showing request based on the inertia information of each electric island and the inertia information of all the source equipment, the load equipment and the storage equipment in each electric island in response to the type of the visualization showing request.
4. The method of claim 3, wherein the visualization chart comprises: tables, electrical topologies, geographies, histograms, bars, pie charts, bubble charts, radar charts, rectangular tree diagrams, and box line diagrams.
5. The method of claim 1, wherein after performing the panoramic representation of the inertia information of each electrical island and the inertia information of all the source, load, and storage devices in each electrical island, the method further comprises:
and responding to the storage request, and storing the panoramic display result.
6. An apparatus for panoramic display of power system inertia, the apparatus comprising:
the information acquisition unit is used for acquiring source, load and storage information of the power system;
the topology analysis unit is used for analyzing by adopting a topology algorithm based on the source, load and storage information to obtain the topological connection relation of the source, load and storage equipment;
the electric island classification unit is used for classifying the electric islands based on the topological connection relation to obtain a plurality of electric islands;
the inertia information calculation unit is used for acquiring inertia characteristics of all the source, load and storage equipment in each electrical island, and calculating inertia information of each electrical island and inertia information of all the source, load and storage equipment in each electrical island based on the inertia characteristics of all the source, load and storage equipment in each electrical island;
and the panoramic display unit is used for carrying out panoramic display on the inertia information of each electrical island and the inertia information of all the source, load and storage equipment in each electrical island.
7. The apparatus of claim 6, wherein the inertia information calculating unit is further configured to:
acquiring the rotational inertia of all generators in each electrical island and the frequency dynamic response characteristics of all energy storage equipment, fans, photovoltaic power generation and loads;
calculating to obtain the rotational inertia W of the generator of each electrical island based on the rotational inertia of all the generators in each electrical island 1 And calculating to obtain the equivalent rotational inertia W of the energy storage equipment, the fan, the photovoltaic power generation and the load of each electrical island based on the frequency dynamic response characteristics of all the energy storage equipment, the fan, the photovoltaic power generation and the load in each electrical island 2 、W 3 、W 4 And W 5 ；
The rotational inertia W of the generator based on each electrical island 1 And equivalent rotational inertia W of energy storage equipment, fan, photovoltaic power generation and load of each electric island 2 、W 3 、W 4 、W 5 Calculating to obtain the equivalent inertia W of the whole network of each electric island;
based on the rotational inertia of all generators in each electrical island and the frequency dynamic response characteristics of all energy storage equipment, fans, photovoltaic power generation and loads, the minimum inertia W of each electrical island is obtained through simulation calculation min ；
Equivalent inertia W and minimum inertia W of the whole network based on each electric island min Obtaining the inertia safety interval [ W ] of each electric island min ,W]And calculating the inertia margin w of each electric island by adopting the following formula:
8. the apparatus of claim 6, wherein the panoramic presentation unit is further configured to:
generating a visual chart corresponding to a preset visual display type according to the preset visual display type based on the inertia information of each electrical island and the inertia information of all the source, load and storage equipment in each electrical island; and responding to the type of the visualization display request, and generating a visualization chart corresponding to the type of the visualization display request based on the inertia information of each electrical island and the inertia information of all the source equipment, the load equipment and the storage equipment in each electrical island.
9. The apparatus of claim 8, wherein the visualization chart comprises: tables, electrical topologies, geographies, histograms, bars, pie charts, bubble charts, radar charts, rectangular tree diagrams, and box line diagrams.
10. The apparatus of claim 6, further comprising:
and the storage unit is used for responding to the storage request and storing the panoramic display result.
11. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 5.
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| CN117272571A (en) * | 2023-11-16 | 2023-12-22 | 国网山西省电力公司电力科学研究院 | Visual checking method and system for power grid new equipment starting scheme |
| CN117272571B (en) * | 2023-11-16 | 2024-03-29 | 国网山西省电力公司电力科学研究院 | Visual checking method and system for power grid new equipment starting scheme |
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