CN111654023B - Method, device, equipment and medium for determining power grid running state - Google Patents
Method, device, equipment and medium for determining power grid running state Download PDFInfo
- Publication number
- CN111654023B CN111654023B CN202010466259.0A CN202010466259A CN111654023B CN 111654023 B CN111654023 B CN 111654023B CN 202010466259 A CN202010466259 A CN 202010466259A CN 111654023 B CN111654023 B CN 111654023B
- Authority
- CN
- China
- Prior art keywords
- power grid
- power
- determining
- electrical quantity
- measured electrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004364 calculation method Methods 0.000 claims abstract description 54
- 238000010586 diagram Methods 0.000 claims abstract description 45
- 238000005259 measurement Methods 0.000 claims abstract description 22
- 238000012937 correction Methods 0.000 claims description 33
- 238000012795 verification Methods 0.000 claims description 15
- 238000004422 calculation algorithm Methods 0.000 claims description 13
- 238000004590 computer program Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 238000003491 array Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
-
- 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
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
- H02J3/0012—Contingency detection
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
Landscapes
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Human Resources & Organizations (AREA)
- Economics (AREA)
- Strategic Management (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Entrepreneurship & Innovation (AREA)
- Power Engineering (AREA)
- Development Economics (AREA)
- Marketing (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Tourism & Hospitality (AREA)
- Educational Administration (AREA)
- General Business, Economics & Management (AREA)
- Quality & Reliability (AREA)
- Operations Research (AREA)
- Game Theory and Decision Science (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- General Health & Medical Sciences (AREA)
- Primary Health Care (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The embodiment of the invention discloses a method, a device, equipment and a medium for determining the running state of a power grid, wherein the method for determining the running state of the power grid comprises the following steps: acquiring measured electrical quantity information of a power grid, a power grid structure diagram and multi-source information of the power grid; correcting the actually measured electrical quantity information based on the multi-source information to obtain corrected actually measured electrical quantity information; determining the node power of the power grid and correcting the node power according to the power grid structure diagram and the corrected actually-measured electrical quantity information; and carrying out load flow calculation on the power grid according to the power grid structure diagram and the corrected node power, and determining the difference value between a load flow calculation result obtained by the load flow calculation and the stored measurement value so as to determine the operation state of the power grid. The method, the device, the equipment and the medium for determining the power grid running state, provided by the embodiment of the invention, can improve the reliability of determining the power grid running state and the reliability of controlling the power grid.
Description
Technical Field
The embodiment of the invention relates to a power grid control technology, in particular to a method, a device, equipment and a medium for determining a power grid running state.
Background
In the field of power systems, if the operation state of a power grid changes, for example, the power grid enters an emergency state from a normal operation state, for example, the emergency states of equipment overload, voltage out-of-limit, insufficient standby and the like in the power grid affect the safety of electric equipment and even the power system. Therefore, for safe and reliable operation of the power grid and reduction of economic losses, the operating state of the power grid needs to be determined.
At present, the existing determination method of the power grid operation state generally adopts the modes of direct current commutation identification criterion and direct current power loss judgment and the like when determining the emergency state of the power grid, but the modes have the problem of inaccurate judgment, and influence the reliability of determining the power grid operation state, thereby influencing the reliability of power grid control.
Disclosure of Invention
The embodiment of the invention provides a method, a device, equipment and a medium for determining a power grid running state, so as to improve the reliability of determining the power grid running state and the reliability of controlling the power grid.
In a first aspect, an embodiment of the present invention provides a method for determining an operating state of a power grid, where the method includes:
acquiring measured electrical quantity information of a power grid, a power grid structure diagram and multi-source information of the power grid; the multi-source information comprises stable control real-time data and phasor real-time data;
correcting the actually measured electrical quantity information based on the multi-source information to obtain corrected actually measured electrical quantity information;
determining the node power of the power grid and correcting the node power according to the power grid structure diagram and the corrected actually-measured electrical quantity information;
and carrying out load flow calculation on the power grid according to the power grid structure diagram and the corrected node power, and determining the difference value between a load flow calculation result obtained by the load flow calculation and the stored measurement value so as to determine the operation state of the power grid.
Optionally, the actually measured electrical quantity information is corrected based on the multi-source information, and the corrected actually measured electrical quantity information is obtained, including:
obtaining correction quantity of data corresponding to the actually measured electrical quantity information based on the stability control real-time data, the phasor real-time data and a preset correction algorithm;
and taking the correction amount of the measured electrical quantity information corresponding data as the corrected measured electrical quantity information corresponding data.
Optionally, the modifying the node power includes:
and correcting the node power of the power grid by controlling the switching on and off of corresponding equipment in the power grid.
Optionally, after determining the node power of the power grid, the method further includes:
and detecting whether the node power is balanced or not, and correcting the node power when the node power is detected to be unbalanced.
Optionally, after the node power is corrected, the method further includes:
and carrying out data quality check on the corrected node power, and carrying out load flow calculation on the power grid if the check is unqualified.
Optionally, determining a difference between a load flow calculation result obtained by the load flow calculation and the stored measurement value to determine the operation state of the power grid includes:
and when the difference value between the load flow calculation result and the stored measurement value exceeds a preset deviation threshold value, determining that the power grid is in an emergency operation state.
Optionally, the phasor real-time data includes voltage phasors in the power grid.
In a second aspect, an embodiment of the present invention further provides a device for determining an operating state of a power grid, where the device includes:
the information acquisition module is used for acquiring the measured electrical quantity information of the power grid, the power grid structure diagram and the multi-source information of the power grid; the multi-source information comprises stable control real-time data and phasor real-time data;
the information correction module is used for correcting the actually measured electrical quantity information based on the multi-source information to obtain the corrected actually measured electrical quantity information;
the power determining module is used for determining the node power of the power grid and correcting the node power according to the power grid structure diagram and the corrected measured electrical quantity information;
and the state determination module is used for carrying out load flow calculation on the power grid according to the power grid structure diagram and the corrected node power, and determining a difference value between a load flow calculation result obtained by the load flow calculation and a stored measurement value so as to determine the operation state of the power grid.
In a third aspect, an embodiment of the present invention further provides an electronic device, including: 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 implements the method for determining an operating state of an electrical grid according to the first aspect.
In a fourth aspect, embodiments of the present invention further provide a storage medium containing computer-executable instructions, which when executed by a computer processor, implement the method for determining an operating state of a power grid according to the first aspect.
The embodiment of the invention provides a method, a device, equipment and a medium for determining the running state of a power grid, the corrected measured electrical quantity information is obtained by obtaining the measured electrical quantity information of the power grid, the power grid structure diagram and the multi-source information of the power grid and correcting the measured electrical quantity information based on the multi-source information, and according to the power grid structure diagram and the corrected measured electrical quantity information, determining the node power of the power grid and correcting the node power, thereby carrying out load flow calculation on the power grid according to the power grid structure diagram and the corrected node power, determining the difference value between the load flow calculation result obtained by the load flow calculation and the stored measurement value, the method comprises the steps of determining the operation state of the power grid, determining the operation state of the power grid based on multi-source information including stability control real-time data and phasor real-time data, and reducing the influence of a single criterion on the reliability of the determined operation state of the power grid, so that the reliability of determining the operation state of the power grid and the reliability of controlling the power grid are improved.
Drawings
Fig. 1 is a flowchart of a method for determining an operating state of a power grid according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for determining an operating state of a power grid according to a second embodiment of the present invention;
fig. 3 is a block diagram of a device for determining an operating state of a power grid according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of a method for determining an operating state of a power grid according to an embodiment of the present invention, where this embodiment is applicable to determining an operating state of a power grid, and the method may be executed by a device for determining an operating state of a power grid, where the device may be implemented by software and/or hardware, and the device may be integrated in an electronic device, such as a computer, having a function of determining an operating state of a power grid, and specifically includes the following steps:
and step 110, obtaining the measured electrical quantity information of the power grid, the power grid structure diagram and the multi-source information of the power grid.
The device for determining the operation state of the power grid can acquire the actually measured electrical quantity information of the power grid, a power grid structure diagram and the multi-source information of the power grid through an input port arranged by the device for determining the operation state of the power grid so as to correct the acquired actually measured electrical quantity information.
And 120, correcting the actually measured electrical quantity information based on the multi-source information to obtain the corrected actually measured electrical quantity information.
Specifically, the correction amount of the data corresponding to the actually measured electrical quantity information may be obtained based on the stable control real-time data, the phasor real-time data and the preset correction algorithm, so that the correction amount of the data corresponding to the actually measured electrical quantity information is used as the corrected actually measured electrical quantity information corresponding data. And e.g. based on the stability control real-time data, the voltage phasor and a preset correction algorithm, correcting the voltage of the power grid to obtain the correction quantity of the voltage. The specific algorithm type of the preset correction algorithm can be set according to the actual situation, and is not limited herein.
And step 130, determining node power of the power grid and correcting the node power according to the power grid structure diagram and the corrected actually measured electrical quantity information.
The node power corresponding to the power grid node in the power grid structure diagram can be determined according to the corrected actually-measured electrical quantity information, if the node power is obtained according to the corrected voltage and current, whether the node power is balanced can be detected, and when the node power is detected to be unbalanced, the node power can be corrected by controlling the switching-on and switching-off of corresponding equipment in the power grid to obtain the corrected node power.
And 140, carrying out load flow calculation on the power grid according to the power grid structure diagram and the corrected node power, and determining a difference value between a load flow calculation result obtained by the load flow calculation and a stored measurement value so as to determine the running state of the power grid.
For example, the data quality check may be performed on the modified node power, and whether the data quality check is qualified or not may be according to a preset check standard, for example, the check standard includes a numerical range of the node power, and the preset check standard may be set according to an actual situation, which is not limited herein. If the power grid is qualified, the power grid is in a non-emergency operation state, if the power grid is not qualified, power flow calculation is carried out on the power grid, the measured value can be a measured value corresponding to a power flow calculation result, if the difference value between the power flow calculation result and the stored measured value does not exceed a preset deviation threshold value, the power grid is in the non-emergency operation state, and when the difference value between the power flow calculation result and the stored measured value exceeds the preset deviation threshold value, the power grid is determined to be in the emergency operation state, so that the power grid can be controlled correspondingly.
The method for determining the operating state of the power grid provided by this embodiment obtains the measured electrical quantity information of the power grid, the power grid structure diagram and the multi-source information of the power grid, and correcting the measured electrical quantity information based on the multi-source information to obtain corrected measured electrical quantity information, determining the node power of the power grid and correcting the node power according to the power grid structure diagram and the corrected measured electrical quantity information, and carrying out load flow calculation on the power grid according to the power grid structure diagram and the corrected node power, determining the difference value between the load flow calculation result obtained by the load flow calculation and the stored measurement value, the method comprises the steps of determining the operation state of the power grid, determining the operation state of the power grid based on multi-source information including stability control real-time data and phasor real-time data, and reducing the influence of a single criterion on the reliability of the determined operation state of the power grid, so that the reliability of determining the operation state of the power grid and the reliability of controlling the power grid are improved.
Example two
Fig. 2 is a flowchart of a method for determining an operating state of a power grid according to a second embodiment of the present invention, where this embodiment is applicable to determining an operating state of a power grid, and the method may be executed by a device for determining an operating state of a power grid, where the device may be implemented by software and/or hardware, and the device may be integrated in an electronic device, such as a computer, having a function of determining an operating state of a power grid, and specifically includes the following steps:
and step 210, obtaining the measured electrical quantity information of the power grid, the power grid structure diagram and the multi-source information of the power grid.
The device for determining the operation state of the power grid can acquire the actually measured electrical quantity information of the power grid, a power grid structure diagram and the multi-source information of the power grid through an input port arranged by the device for determining the operation state of the power grid so as to correct the acquired actually measured electrical quantity information.
And step 220, obtaining correction quantity of data corresponding to the actually measured electrical quantity information based on the stability control real-time data, the phasor real-time data and a preset correction algorithm.
Illustratively, the voltage of the power grid can be corrected based on the stability control real-time data, the voltage phasor and a preset correction algorithm to obtain the correction quantity of the voltage. The specific algorithm type of the preset correction algorithm can be set according to the actual situation, and is not limited herein.
And a step 230 of setting a correction amount of the measured electrical quantity information-based data as the corrected measured electrical quantity information-based data.
And 240, determining the node power of the power grid according to the power grid structure diagram and the corrected actually measured electrical quantity information.
And determining the node power corresponding to the power grid node in the power grid structure chart according to the corrected actually-measured electrical quantity information, and obtaining the node power according to the corrected voltage and current.
And step 250, detecting whether the node power is balanced or not, and correcting the node power when the node power is detected to be unbalanced.
Specifically, the node power may be detected in a balanced manner by a common method for detecting whether the node power is balanced, which is not specifically limited herein, and when the node power is detected to be unbalanced, the node power of the power grid may be corrected by controlling the switching on and off of the corresponding device in the power grid.
And step 260, carrying out data quality verification on the corrected node power, and carrying out load flow calculation on the power grid if the node power is not verified.
Whether the data quality check is qualified or not can be determined according to a preset check standard, for example, the check standard includes a numerical range of the node power, and the preset check standard can be set according to an actual situation, which is not limited herein. If the verification is qualified, the power grid is in a non-emergency operation state, and if the verification is unqualified, load flow calculation is carried out on the power grid.
And 270, when the difference value between the load flow calculation result and the stored measurement value exceeds a preset deviation threshold value, determining that the power grid is in an emergency operation state.
The measurement value may be a measurement value corresponding to a load flow calculation result, if a difference between the load flow calculation result and the stored measurement value does not exceed a preset deviation threshold, it indicates that the power grid is in a non-emergency operation state, and when the difference between the load flow calculation result and the stored measurement value exceeds the preset deviation threshold, it is determined that the power grid is in an emergency operation state, so as to correspondingly control the power grid.
The method for determining the operation state of the power grid provided by this embodiment includes obtaining measured electrical quantity information of the power grid, a power grid structure diagram and multisource information of the power grid, correcting the measured electrical quantity information based on stable control real-time data, phasor real-time data and a preset correction algorithm, determining node power of the power grid according to the power grid structure diagram and the corrected measured electrical quantity information, detecting whether the node power is balanced and correcting the node power when the node power is detected to be unbalanced, performing data quality check on the corrected node power, performing power flow calculation on the power grid if the check is not qualified, determining that the power grid is in an emergency operation state when a difference value between a power flow calculation result and a stored measurement value exceeds a preset deviation threshold value, determining the operation state of the power grid based on the multisource information including stable control real-time data and phasor real-time data, and reducing the influence of a single criterion on the reliability of the operation state of the power grid, therefore, the reliability of determining the running state of the power grid and the reliability of controlling the power grid are improved.
EXAMPLE III
Fig. 3 is a block diagram of a device for determining an operating state of a power grid according to a third embodiment of the present invention, where the device includes an information obtaining module 310, an information modifying module 320, a power determining module 330, and a state determining module 340; the information obtaining module 310 is configured to obtain measured electrical quantity information of a power grid, a power grid structure diagram, and multi-source information of the power grid; the multi-source information comprises stable control real-time data and phasor real-time data; the information correction module 320 is configured to correct the actually measured electrical quantity information based on the multi-source information to obtain corrected actually measured electrical quantity information; the power determining module 330 is configured to determine a node power of the power grid and correct the node power according to the power grid structure diagram and the corrected measured electrical quantity information; the state determination module 340 is configured to perform load flow calculation on the power grid according to the power grid structure diagram and the modified node power, and determine a difference between a load flow calculation result obtained by the load flow calculation and a stored measurement value, so as to determine an operation state of the power grid.
In one embodiment, the information correction module 320 includes a correction amount determination unit and an information correction unit, where the correction amount determination unit is configured to obtain a correction amount of data corresponding to the measured electrical quantity information based on the stable control real-time data, the phasor real-time data, and a preset correction algorithm; the information correction unit is used for taking the correction amount of the measured electrical quantity information corresponding data as the corrected measured electrical quantity information corresponding data.
Preferably, the power determining module 330 includes a power correcting unit, which is used for correcting the node power of the power grid by controlling the switching on and off of the corresponding devices in the power grid.
Preferably, the apparatus further includes a power checking module, configured to detect whether node power is balanced, and correct the node power when node power imbalance is detected.
In an embodiment, the apparatus further includes a checking module, configured to perform data quality checking on the modified node power, and perform load flow calculation on the power grid if the node power is not verified.
Preferably, the status determining module 340 includes a status determining unit, configured to determine that the power grid is in an emergency operation status when a difference between the power flow calculation result and the stored measurement value exceeds a preset deviation threshold.
The device for determining the power grid operating state provided by the embodiment has the corresponding beneficial effects of the method for determining the power grid operating state.
Example four
Fig. 4 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present invention. FIG. 4 illustrates a block diagram of an exemplary electronic device 412 suitable for use in implementing embodiments of the present invention. The electronic device 412 shown in fig. 4 is only an example and should not bring any limitations to the functionality and scope of use of the embodiments of the present invention.
As shown in fig. 4, the electronic device 412 is in the form of a general purpose device. The components of the electronic device 412 may include, but are not limited to: one or more processors 416, a storage device 428, and a bus 418 that couples the various system components including the storage device 428 and the processors 416.
A program/utility 440 having a set (at least one) of program modules 442 may be stored, for instance, in storage 428, such program modules 442 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. The program modules 442 generally perform the functions and/or methodologies of the described embodiments of the invention.
The electronic device 412 may also communicate with one or more external devices 414 (e.g., keyboard, pointing terminal, display 424, etc.), with one or more terminals that enable a user to interact with the electronic device 412, and/or with any terminals (e.g., network card, modem, etc.) that enable the electronic device 412 to communicate with one or more other computing terminals. Such communication may occur via input/output (I/O) interfaces 422. Also, the electronic device 412 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public Network, such as the internet) via the Network adapter 420. As shown in FIG. 4, network adapter 420 communicates with the other modules of electronic device 412 via bus 418. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the electronic device 412, including but not limited to: microcode, end drives, Redundant processors, external disk drive Arrays, RAID (Redundant Arrays of Independent Disks) systems, tape drives, and data backup storage systems, to name a few.
The processor 416 executes various functional applications and data processing by running programs stored in the storage device 428, for example, to implement the method for determining the operating state of the power grid provided by the embodiment of the present invention, the method includes:
acquiring measured electrical quantity information of a power grid, a power grid structure diagram and multi-source information of the power grid; the multi-source information comprises stable control real-time data and phasor real-time data;
correcting the actually measured electrical quantity information based on the multi-source information to obtain corrected actually measured electrical quantity information;
determining the node power of the power grid and correcting the node power according to the power grid structure diagram and the corrected actually-measured electrical quantity information;
and carrying out load flow calculation on the power grid according to the power grid structure diagram and the corrected node power, and determining the difference value between a load flow calculation result obtained by the load flow calculation and the stored measurement value so as to determine the operation state of the power grid.
EXAMPLE five
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a method for determining an operating state of a power grid, where the method includes:
acquiring measured electrical quantity information of a power grid, a power grid structure diagram and multi-source information of the power grid; the multi-source information comprises stable control real-time data and phasor real-time data;
correcting the actually measured electrical quantity information based on the multi-source information to obtain corrected actually measured electrical quantity information;
determining the node power of the power grid and correcting the node power according to the power grid structure diagram and the corrected actually-measured electrical quantity information;
and carrying out load flow calculation on the power grid according to the power grid structure diagram and the corrected node power, and determining a difference value between a load flow calculation result obtained by the load flow calculation and a stored measurement value so as to determine the operating state of the power grid.
Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, python, C + +, or the like, as well as conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or terminal. In the latter scenario, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (6)
1. A method for determining an operating condition of a power grid, comprising:
acquiring measured electrical quantity information of a power grid, a power grid structure diagram and multi-source information of the power grid; the multi-source information comprises stable control real-time data and phasor real-time data; the stability control real-time data comprises a power factor angle in the power grid when the power grid is stably controlled;
correcting the actually measured electrical quantity information based on the multi-source information to obtain the corrected actually measured electrical quantity information, and the method specifically comprises the following steps: obtaining correction quantity of data corresponding to the actually measured electrical quantity information based on the stable control real-time data, the phasor real-time data and a preset correction algorithm; taking the correction amount of the data corresponding to the actually measured electrical quantity information as the corrected data corresponding to the actually measured electrical quantity information;
determining the node power of the power grid according to the power grid structure diagram and the corrected actually-measured electrical quantity information, detecting whether the node power is balanced, and correcting the node power by controlling the switching on and off of corresponding equipment in the power grid when the node power is detected to be unbalanced;
and carrying out data quality verification on the corrected node power, wherein the data quality verification is qualified or not according to a preset verification standard, the verification standard comprises a numerical range of the node power, if the verification is qualified, the power grid is in a non-emergency operation state, if the verification is unqualified, carrying out load flow calculation on the power grid according to the power grid structure diagram and the corrected node power, and determining a difference value between a load flow calculation result obtained by the load flow calculation and a stored measurement value so as to determine the operation state of the power grid.
2. The method of claim 1, wherein determining a difference between the power flow calculation result from the power flow calculation and the stored measurement value to determine the operating state of the power grid comprises:
and when the difference value between the load flow calculation result and the stored measurement value exceeds a preset deviation threshold value, determining that the power grid is in an emergency operation state.
3. The method of claim 1, wherein the phasor real-time data includes voltage phasors in a power grid.
4. An apparatus for determining an operating condition of a power grid, comprising:
the information acquisition module is used for acquiring the actually measured electrical quantity information of the power grid, the power grid structure diagram and the multi-source information of the power grid; the multi-source information comprises stable control real-time data and phasor real-time data; the stable control real-time data comprises a power factor angle in the power grid when the power grid is stably controlled;
an information correction module, configured to correct the actually measured electrical quantity information based on the multi-source information to obtain the corrected actually measured electrical quantity information, and specifically configured to: obtaining correction quantity of data corresponding to the actually measured electrical quantity information based on the stable control real-time data, the phasor real-time data and a preset correction algorithm; taking the correction amount of the data corresponding to the actually measured electrical quantity information as the corrected data corresponding to the actually measured electrical quantity information;
the power determining module is used for determining the node power of the power grid according to the power grid structure diagram and the corrected actually-measured electrical quantity information, detecting whether the node power is balanced or not, and correcting the node power by controlling the switching on and off of corresponding equipment in the power grid when the node power is detected to be unbalanced;
and the state determination module is used for carrying out data quality verification on the corrected node power, whether the data quality verification is qualified or not is determined according to a preset verification standard, the verification standard comprises a numerical range of the node power, if the verification is qualified, the power grid is in a non-emergency operation state, if the verification is unqualified, load flow calculation is carried out on the power grid according to the power grid structure diagram and the corrected node power, and a difference value between a load flow calculation result obtained by the load flow calculation and a stored measurement value is determined so as to determine the operation state of the power grid.
5. An electronic device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the method for determining an operating state of an electrical grid according to any one of claims 1 to 3.
6. A storage medium containing computer executable instructions which, when executed by a computer processor, implement the method of determining an operational status of a power grid according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010466259.0A CN111654023B (en) | 2020-05-28 | 2020-05-28 | Method, device, equipment and medium for determining power grid running state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010466259.0A CN111654023B (en) | 2020-05-28 | 2020-05-28 | Method, device, equipment and medium for determining power grid running state |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111654023A CN111654023A (en) | 2020-09-11 |
| CN111654023B true CN111654023B (en) | 2022-09-20 |
Family
ID=72348908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010466259.0A Active CN111654023B (en) | 2020-05-28 | 2020-05-28 | Method, device, equipment and medium for determining power grid running state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111654023B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391059A (en) * | 2015-11-23 | 2016-03-09 | 江苏省电力公司南通供电公司 | Distributed power generation system state estimation method based on current measurement transformation |
| CN107039995A (en) * | 2016-11-28 | 2017-08-11 | 国网湖北省电力公司宜昌供电公司 | A kind of distributed photovoltaic power access planing method for considering power quality problem |
| CN109066685A (en) * | 2018-08-02 | 2018-12-21 | 国网安徽省电力有限公司 | A kind of line parameter circuit value modification method based on parametric sensitivity |
| CN109066687A (en) * | 2018-08-22 | 2018-12-21 | 深圳先进技术研究院 | A kind of electric power system tide calculation method, system and electronic equipment |
-
2020
- 2020-05-28 CN CN202010466259.0A patent/CN111654023B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391059A (en) * | 2015-11-23 | 2016-03-09 | 江苏省电力公司南通供电公司 | Distributed power generation system state estimation method based on current measurement transformation |
| CN107039995A (en) * | 2016-11-28 | 2017-08-11 | 国网湖北省电力公司宜昌供电公司 | A kind of distributed photovoltaic power access planing method for considering power quality problem |
| CN109066685A (en) * | 2018-08-02 | 2018-12-21 | 国网安徽省电力有限公司 | A kind of line parameter circuit value modification method based on parametric sensitivity |
| CN109066687A (en) * | 2018-08-22 | 2018-12-21 | 深圳先进技术研究院 | A kind of electric power system tide calculation method, system and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111654023A (en) | 2020-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113378403B (en) | Simulation test modeling method, system, test method, device and storage medium | |
| CN113125851B (en) | Power consumption statistical method, device, equipment and storage medium | |
| KR20200110132A (en) | Method and apparatus for detecting traffic | |
| CN109001661B (en) | Method and device for determining consistency of double sampling values, terminal equipment and storage medium | |
| CN111654023B (en) | Method, device, equipment and medium for determining power grid running state | |
| CN111596177B (en) | Method, device and equipment for detecting turn-to-turn insulation of generator rotor and storage medium | |
| CN113691310B (en) | Fault monitoring method, device, equipment and storage medium of optical fiber link | |
| CN111835004A (en) | Method, device, equipment and medium for determining power grid control strategy | |
| CN114137360B (en) | Power distribution network fault positioning method, device and storage medium | |
| CN113884943B (en) | Leakage fault analysis method, device, equipment and medium | |
| CN113612659B (en) | Device networking test method and device, electronic device and storage medium | |
| CN111157907B (en) | Detection method and device, charging method and device, electronic device and storage medium | |
| CN111525565A (en) | Power grid emergency state recovery control optimization method, device, equipment and medium | |
| CN112649879B (en) | Method, system, apparatus and storage medium for detecting battery in device | |
| CN114142448A (en) | Power distribution network protection method and device and storage medium | |
| CN117761579A (en) | Method for detecting a line state of an electrical device and voltage monitoring device | |
| CN114660500B (en) | Three-phase monitoring protection system | |
| US11415638B2 (en) | Test method and test device for adapter | |
| CN109142938B (en) | Method and equipment for detecting quality of air conditioner | |
| CN114530824A (en) | Overcurrent protection method, device, system and storage medium | |
| CN111934427B (en) | Signal checking method and system, protection measurement and control device and storage medium | |
| CN115528508A (en) | Cable crimping control method and device, electronic equipment and storage medium | |
| CN117723815A (en) | Chip voltage testing method, device, equipment and storage medium | |
| CN113268388A (en) | Fault detection method and device of energy storage system, electronic equipment and storage medium | |
| CN114780347A (en) | Monitoring method, monitoring device, computer equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |