CN112467806A - Method and system for determining power grid operation state based on DMN power grid regulation and control rule - Google Patents
Method and system for determining power grid operation state based on DMN power grid regulation and control rule Download PDFInfo
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- CN112467806A CN112467806A CN202011437908.0A CN202011437908A CN112467806A CN 112467806 A CN112467806 A CN 112467806A CN 202011437908 A CN202011437908 A CN 202011437908A CN 112467806 A CN112467806 A CN 112467806A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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Abstract
The invention discloses a method and a system for determining the operation state of a power grid based on DMN power grid regulation and control rules, wherein the method comprises the following steps: acquiring a state data file of each section of a target power grid in a current operation mode in real time, and analyzing to acquire power information of at least one generator operating in each section when the generator is on line; analyzing the power information, and determining the actual value of the total main power of the main online transformer corresponding to each section and the unit rotation standby percentage of each section; determining a threshold value of total main power of the on-line main transformer of each section and a minimum rotation reserve margin of a unit according to the load level of the target power grid and the current operation mode of each section based on a preset decision model DMN power grid regulation and control rule; and when the actual value of the total main power of the main online transformer of any section is less than or equal to the threshold of the total main power of the main online transformer, and the rotation reserve percentage of the unit is less than or equal to the minimum rotation reserve margin of the unit, determining that the any section is in the stable operation state of online.
Description
Technical Field
The invention relates to the technical field of power grid stability control, in particular to a method and a system for determining a power grid operation state based on a Decision Model and a DMN (digital media network) power grid regulation and control rule.
Background
With the advance of extra-high voltage alternating current and direct current engineering, large-scale grid connection of a clean energy base is realized, the operation mode of an electric power system is changeable, the number of sections is increased day by day, the control rule is complex day by day, the operation personnel develop the regulation and control business by means of manual understanding and memory of stable regulations in the regulation and control rule, and the risk and pressure of safe operation are obviously increased. With the large-scale use of the safety control device in the operation of the power grid, the action strategy directly influences the safe and stable operation of the power grid, but a complete and universal regulation and control rule and a safety control action strategy knowledge model are not established in the application of online safety analysis and plan safety check. The upper and lower-level scheduling is mainly managed by means of stable operation regulation files and a manual coordination mode, and with the wide application of a scheduling cloud technology in each provincial and provincial center, a whole set of IT technology supporting means is needed to coordinate and realize integrated management of the scheduling mode.
The representation of the regulation and control rule at home and abroad is generally represented by an if-then script mode, but the limitation electronization process by the script representation mode highly depends on the understanding of manual operation on the mode report, the manual input workload is large for the complex control requirement in the mode report, and the response timeliness requirement of production operation on the limitation electronization is high; the limitation electronic maintenance workload of a winter operation mode, a summer operation mode, a temporary limitation and the like is large. Taking a certain stability rule of the china power grid as shown in table 1 as an example, the result of the stability rule expressed by an if-then script is shown in fig. 1.
TABLE 1 Stable prescription of Sand-recovery section
It can be seen that, the recording of the power grid operation mode and the safety control strategy rule by using the script file in the form of if logic statements is more intuitive and feasible, but the following problems exist in practical application; the safety and stability of the power grid are relatively complex in representation of complex sections, and if the ifs are nested too much, the understanding is not intuitive enough; the workload of electronic input, correctness checking and daily maintenance of the dynamic quota regulating is large; the system has no standardized interface, cannot be seamlessly integrated with other existing systems, and plays a greater role in safety and stability.
Therefore, a method is needed to efficiently determine the operating state of the grid.
Disclosure of Invention
The invention provides a method and a system for determining a power grid operation state based on a DMN power grid regulation and control rule, and aims to solve the problem of how to determine the power grid operation state.
In order to solve the above problem, according to an aspect of the present invention, there is provided a method for determining a grid operating state based on a DMN grid regulation rule, the method including:
acquiring a state data file of each section of a target power grid in a current operation mode in real time, and analyzing each acquired state data file to acquire power information of at least one generator operating in each section when the generator is on the internet;
analyzing power information of each generator running in each section when the generator is on the internet, and determining the actual value of the total main power of the generator on the internet and the unit rotation reserve percentage of each section when all the generators running in each section are on the internet;
determining a threshold value of total main power of an on-line main transformer of all generators running in each section when the generators are on line and a minimum rotation reserve margin of a unit corresponding to each section according to the load level of the target power grid and the current running mode of each section based on a preset decision model DMN power grid regulation and control rule;
and when the actual value of the total main power of the on-line corresponding to any section is less than or equal to the threshold of the total main power of the on-line corresponding to any section, and the percentage of the unit rotation reserve of any section is less than or equal to the minimum rotation reserve margin of the unit corresponding to the section, determining that any section is in the stable operation state of the on-line.
Preferably, wherein the method further comprises:
analyzing each acquired state data file to acquire power information of at least one generator running in each section when the generator is off the network;
analyzing power information of each generator running in each section when the generator is off-grid, and determining the actual value of the off-grid total main transformer power of all the generators running in each section when the generators are off-grid;
determining a threshold value of the total main transformer power of the power grid during the power grid disconnection of all the generators operating in each section according to the current operation mode of each section based on a preset decision model DMN power grid regulation and control rule;
and when the actual value of the main transformer power of the lower net corresponding to any one section is less than or equal to the threshold value of the main transformer power of the lower net corresponding to any one section, determining that any one section is in the stable operation state of the lower net.
Preferably, the status data file is a Quality Safety (QS) file based on a common model description specification (CIM/E) of a power grid; the data file includes: and (4) real-time operation data and load flow calculation parameters of the whole network.
Preferably, wherein the method further comprises:
and when the actual value of the total main power of the main online transformer corresponding to any one section is greater than the threshold value of the total main power of the main online transformer corresponding to any one section, or the percentage of the reserve of the unit rotation of any one section is greater than the minimum reserve margin of the unit rotation corresponding to the section, determining that any one section is in an unstable online running state, and sending alarm information corresponding to any one section to the control master station.
Preferably, wherein the method further comprises:
and when the actual value of the main transformer power of the lower network corresponding to any section is larger than the threshold value of the main transformer power of the lower network corresponding to any section, determining that any section is in the stable operation state of the lower network, and sending alarm information corresponding to any section to the control master station.
According to another aspect of the present invention, there is provided a system for determining a grid operating state based on a DMN grid regulation rule, the system comprising:
the power information acquisition unit is used for acquiring a state data file of each section of the target power grid in a current operation mode in real time and analyzing each acquired state data file to acquire power information of at least one generator operating in each section when the generator is on the internet;
the operation information acquisition unit is used for analyzing the power information of each generator operating in each section when the generator is on the internet, and determining the actual value of the total main power of the generator on the internet and the unit rotation reserve percentage of each section when all the generators operating in each section are on the internet;
the threshold determining unit is used for determining a threshold of total main grid power of all generators running in each section when the generators are on the internet and a minimum rotation reserve margin of a unit corresponding to each section according to the load level of the target power grid and the current running mode of each section based on a preset decision model DMN power grid regulation and control rule;
and the operation state determining unit is used for determining that any section is in an online stable operation state when the actual value of the online total main transformer power corresponding to the any section is less than or equal to the threshold of the online total main transformer power corresponding to the any section, and the unit rotation standby percentage of the any section is less than or equal to the unit minimum rotation standby margin corresponding to the section.
Preferably, wherein the system further comprises:
the power information acquisition unit is used for analyzing each acquired state data file to acquire power information of at least one generator running in each section when the generator is off the network;
the operation information acquisition unit is used for analyzing the power information of each generator which operates in each section when the generator is off-grid, and determining the actual value of the off-grid total main transformer power of all the generators which operate in each section when the generator is off-grid;
the threshold value determining unit is used for determining the threshold value of the total main transformer power of the power grid during the power grid disconnection of all the generators operating in each section according to the current operation mode of each section based on the preset decision model DMN power grid regulation and control rule;
and the operation state determining unit is used for determining that any section is in a lower net stable operation state when the actual value of the lower net main transformer power corresponding to any section is less than or equal to the threshold value of the lower net main transformer power corresponding to any section.
Preferably, the status data file is a Quality Safety (QS) file based on a common model description specification (CIM/E) of a power grid; the data file includes: and (4) real-time operation data and load flow calculation parameters of the whole network.
Preferably, the operation state determination unit is further configured to:
and when the actual value of the total main power of the main online transformer corresponding to any one section is greater than the threshold value of the total main power of the main online transformer corresponding to any one section, or the percentage of the reserve of the unit rotation of any one section is greater than the minimum reserve margin of the unit rotation corresponding to the section, determining that any one section is in an unstable online running state, and sending alarm information corresponding to any one section to the control master station.
Preferably, the operation state determination unit is further configured to:
and when the actual value of the main transformer power of the lower network corresponding to any section is larger than the threshold value of the main transformer power of the lower network corresponding to any section, determining that any section is in the stable operation state of the lower network, and sending alarm information corresponding to any section to the control master station.
The invention provides a method and a system for determining a power grid running state based on a DMN power grid regulation and control rule, wherein a DMN power grid regulation and control rule is constructed to obtain a state data file of each section of a target power grid in a current running mode, and the running state of the section is determined according to an actual value of total main variable power of an online main variable, a unit rotating standby percentage of each section, an actual value of total main variable power of an offline main variable and the DMN power grid regulation and control rule which are determined based on the state data file; the method can quickly and accurately evaluate the operation state of the power grid based on the DMN power grid regulation and control rule, can quickly assist a dispatcher to complete increasingly complex dispatching tasks, improves the real-time performance of the power grid dispatching decision process, and can provide support for the operation mode management of the power grid.
Drawings
A more complete understanding of exemplary embodiments of the present invention may be had by reference to the following drawings in which:
FIG. 1 is a schematic diagram of a conventional grid regulation rule;
FIG. 2 is a flow diagram of a method 200 for determining a grid operating state based on DMN grid regulation rules, according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a regulatory knowledge model according to an embodiment of the invention;
FIG. 4 is a schematic diagram of entering a regulatory into a system according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating evaluation results according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of determining a grid operating condition according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a system 700 for determining a grid operating state based on a DMN grid regulation rule according to an 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. 2 is a flowchart of a method 200 for determining a grid operating state based on DMN grid regulation rules, according to an embodiment of the invention. As shown in fig. 2, the method for determining the operation state of the power grid based on the DMN power grid regulation and control rule provided by the embodiment of the invention can quickly and accurately evaluate the operation state of the power grid based on the DMN power grid regulation and control rule, can quickly assist a dispatcher in completing increasingly complex dispatching tasks, improves the real-time performance of the power grid dispatching decision process, and can provide support for the operation mode management of the power grid.
In the method 200 for determining the power grid operation state based on the DMN power grid regulation and control rule provided by the embodiment of the present invention, starting from step 201, a state data file of each section of the target power grid in the current operation mode is obtained in step 201 in real time, and each obtained state data file is analyzed to obtain power information of at least one generator operating in each section when the generator is on line.
Preferably, the status data file is a Quality Safety (QS) file based on a common model description specification (CIM/E) of a power grid; the data file includes: and (4) real-time operation data and load flow calculation parameters of the whole network.
In an embodiment of the present invention, a plurality of cross sections are provided in one target power grid, and the operation mode is determined for any one cross section based on the number of generators in operation in that cross section. In order to determine the operating state of the power grid, it is necessary to acquire a state data file of each power grid in its current operating mode, and determine power information of all generators operating in each section when the generators are on the internet according to the state data file. The state data file is a QS file based on CIM/E specification and contains state data of online operation of an electric network. The (CIM/E) is based on the power grid general model description specification, the qs file is a data file after state estimation, the qs file comprises full-network real-time operation data and load flow calculation parameters, the (CIM/E) is an important basis for developing full-network online load flow calculation, and is an important material for researching and inverting the actual power grid operation state.
In step 202, the power information of each generator running in each section during surfing the internet is analyzed, and the actual value of the total main power of the generators running in each section during surfing the internet and the unit rotation reserve percentage of each section are determined.
In step 203, based on a preset decision model DMN power grid regulation rule, according to the load level of the target power grid and the current operation mode of each section, determining a threshold value of total main grid power of all generators operating in each section when the generators are on the grid and a minimum rotation reserve margin of the unit corresponding to each section.
In practical application, the dynamic quota adjusting and electronic scripted entry, correctness checking and daily maintenance are very complex, the workload is large, and the support of a systematic and automatic checking tool is lacked. At present, the debugging and specification electronization uses an if-then script mode to express the debugging and specification, has poor application effect and cannot be embedded into a main scheduling business process.
Therefore, in the embodiment of the invention, the regulation rule with good description and expression is constructed by relying on the DMN standard of the decision model. The regulation comprises two main parts, namely an operation condition information definition and a specific regulation rule definition. The operation condition information comprises operation information and safety control information, and only the operation information is used at present. The operation information is used for defining input variable values needed in the regulation and state variable information needed for judging the operation mode. As shown in fig. 3, the rule-adjusting rule definition is used to define specific rule-adjusting logic, the rule-adjusting may be defined according to dimensions (nodes) such as year, summer, winter, etc., the mode definition of each rule may be divided into multi-level definitions, and the rule-adjusting quota monitoring logic is defined by a decision table in the bottom mode. Wherein operational data Facts from the digital twin grid analysis model are used for the mode decision and evaluation. For a rule set in a certain manner, there may be multiple conditions that do not satisfy the quota, resulting in multiple alarms. The system notifies the dispatcher controlling the master station of all alarms. Generally, in a rule, only one rule is established per mode level at any time. Then, there may be a case where a plurality of modes are established in one regulation rule.
The description will be given by taking as an example a recording process in which the kana province 2019 stably specifies the 37 th regulation. Firstly, the regulation is constructed by a DMN method, and then the logic expression is recorded in an interface mode. As shown in tables 2 and 3, the limitation for the online control of the main transformer of the archway and the limitation for the offline control of the main transformer of the archway are shown.
Table 2 archway main transformer internet control quota
Table 3 archway main transformer off-line control quota
| Mode of operation | Main power of archway (MW) |
| Normal mode | 1500 |
| Main transformer of any one of the archways stops running | 930 |
Determining a logic expression of the 37 th debugging rule as follows through a DMN decision tree method:
1) the main change of the archway is the internet control limit, and the expression P1<0
2) The off-grid control limit of the main transformer of the archway is expressed as P1 ═ 0
3) The main transformer of the archway is connected with the internet control limit- < 22000, and the expression S1< 22000
4) The main transformer of the archway is connected with the internet control limit- >22000, and the expression S1>22000
5) The main bridge of the archway is connected with the internet to control the operation of the quota-22000-3 or 2 main bridges, and the expression of function.allInoperation (S1, S2, S3) | | | function.twoInoperation (S1, S2, S3)
6) The main transformer of the archway controls the operation of the quota-less than or equal to 22000-1 main transformer of the archway, and the expression is func.oneInoperation (S1, S2, S3)
7) The main bridge of the archway is connected with the internet to control the operation of the quota- > 22000-3 or 2 main bridges, and the expression is func.allInoperation (S1, S2, S3) | | func.twoInoperation (S1, S2, S3)
8) Torpedo main transformer is on-line control quota- > 22000-Torpedo 1 main transformer operation, expression func.oneInoperation (S1, S2, S3)
9) The main transformer of the archway is in off-line control quota-normal mode, expression
func.allInOperation(S1,S2,S3)
Brand building main transformer off-line control quota-any main transformer of the Brand building stops running, expression func.twoInoperation (S1, S2, S3)
Wherein, the function, onelnoperation (S1, S2, S3) indicates that any one of the three conditions of S1, S2, S3 is satisfied, the function, twooperation (S1, S2, S3) indicates that any two of the three conditions of S1, S2, S3 are satisfied, and the function, allInoperation (S1, S2, S3) indicates that all three conditions of S1, S2, S3 are satisfied.
These logical rules are entered through an entry interface, as shown in FIG. 4. After the offline data are uploaded, the power value in the regulation can be flexibly modified by the test case (different regulations) established on the interface, and compared with the if-then script, the regulation can be modified without modifying codes. The method applies other systems to automatically evaluate the stability of the current power grid data.
The DMN-based regulation construction can standardize electronic input, correctness check and daily maintenance of the regulation and control rule, the code does not need to be repeatedly modified on the premise that a power grid dispatching personnel frequently adjusts the safety and stability boundary of the power grid, the regulation and control can be modified and input on an interface, and the repeated work in the regulation and control rule making process of mode personnel is reduced.
In the embodiment of the invention, based on a preset decision model DMN power grid regulation and control rule, the threshold value of the total main on-line main power of all generators running in each section when the generators are on line and the minimum rotation reserve margin of the unit corresponding to each section are determined according to the load level of the target power grid and the current running mode of each section in a matching manner. As shown in table 2, when the power generator on the cross section is on line, when the grid load level is 22000 or less and the operation mode is that 3 or 2 main transformers in the archway operate, the sum of the main transformers in the archway is determined to be 800 (the negative sign before 800 is used for indicating the power direction) and the requirement for the minimum rotation reserve of the unit is determined to be 10%.
In step 204, when the actual value of the total main power of the main on-line power corresponding to any one section is less than or equal to the threshold of the total main power of the main on-line power corresponding to the any one section, and the percentage of the set rotation reserve of the any one section is less than or equal to the minimum rotation reserve margin of the set corresponding to the section, it is determined that the any one section is in the stable on-line operation state.
Preferably, wherein the method further comprises:
and when the actual value of the total main power of the main online transformer corresponding to any one section is greater than the threshold value of the total main power of the main online transformer corresponding to any one section, or the percentage of the reserve of the unit rotation of any one section is greater than the minimum reserve margin of the unit rotation corresponding to the section, determining that any one section is in an unstable online running state, and sending alarm information corresponding to any one section to the control master station.
As shown in fig. 5, a schematic diagram of determining the evaluation result (whether in a steady operation state) based on the logic expression of the 37 th debugging rule is shown, and the result includes: test cases, regulations, modes, running information, rules, results of whether to cross the border and alarm messages. When the generator running in a certain section is out of range on the internet, an alarm message is generated according to the out-of-range item, and the generated alarm message is sent to the control master station.
Preferably, wherein the method further comprises:
analyzing each acquired state data file to acquire power information of at least one generator running in each section when the generator is off the network;
analyzing power information of each generator running in each section when the generator is off-grid, and determining the actual value of the off-grid total main transformer power of all the generators running in each section when the generators are off-grid;
determining a threshold value of the total main transformer power of the power grid during the power grid disconnection of all the generators operating in each section according to the current operation mode of each section based on a preset decision model DMN power grid regulation and control rule;
and when the actual value of the main transformer power of the lower net corresponding to any one section is less than or equal to the threshold value of the main transformer power of the lower net corresponding to any one section, determining that any one section is in the stable operation state of the lower net.
Preferably, wherein the method further comprises:
and when the actual value of the main transformer power of the lower network corresponding to any section is larger than the threshold value of the main transformer power of the lower network corresponding to any section, determining that any section is in the stable operation state of the lower network, and sending alarm information corresponding to any section to the control master station.
In the embodiment of the present invention, the principle of determining whether the cross section is in the offline stable operation state is the same as the principle of determining whether the cross section is in the online stable operation state, and details are not described herein again.
Fig. 6 is a schematic diagram of determining an operating state of a power grid according to an embodiment of the present invention. As shown in fig. 6, the application of electronic scheduling is embedded into the main flow of the scheduling service, which facilitates the quick decision-making of the scheduler. In the running process of a power grid, analyzing the QS file by using a power grid analysis model to obtain power information; and judging by using a CEP engine based on a scheduling rule, and sending an alarm message when the system is changed or disturbed.
Fig. 7 is a schematic structural diagram of a system 700 for determining a grid operating state based on a DMN grid regulation rule according to an embodiment of the present invention. As shown in fig. 7, a system 700 for determining a power grid operating state based on a DMN power grid regulation rule according to an embodiment of the present invention includes: a power information acquisition unit 701, an operation information acquisition unit 702, a threshold determination unit 703, and an operation state determination unit 704.
Preferably, the power information obtaining unit 701 is configured to obtain, in real time, a state data file of each section of the target power grid in the current operation mode, and analyze each obtained state data file to obtain power information of at least one generator operating in each section when the generator is on the internet.
Preferably, the status data file is a Quality Safety (QS) file based on a common model description specification (CIM/E) of a power grid; the data file includes: and (4) real-time operation data and load flow calculation parameters of the whole network.
Preferably, the operation information obtaining unit 702 is configured to analyze power information of each generator operating in each section when the generator is on line, and determine an actual value of total main grid power of all generators operating in each section when the generator is on line and a unit rotation reserve percentage of each section.
Preferably, the threshold determining unit 703 is configured to determine, based on a preset decision model DMN power grid regulation rule, a threshold of total main grid power of all generators operating in each section when the generators are on the internet and a minimum rotation reserve margin of a unit corresponding to each section according to the load level of the target power grid and the current operating mode of each section.
Preferably, the operation state determining unit 704 is configured to determine that any one section is in an online stable operation state when an actual value of the online total main transformer power corresponding to the any one section is less than or equal to a threshold of the online total main transformer power corresponding to the any one section, and a unit rotation standby percentage of the any one section is less than or equal to a unit minimum rotation standby margin corresponding to the section.
Preferably, the operation state determination unit 704 is further configured to:
and when the actual value of the total main power of the main online transformer corresponding to any one section is greater than the threshold value of the total main power of the main online transformer corresponding to any one section, or the percentage of the reserve of the unit rotation of any one section is greater than the minimum reserve margin of the unit rotation corresponding to the section, determining that any one section is in an unstable online running state, and sending alarm information corresponding to any one section to the control master station.
Preferably, wherein the system further comprises:
a power information obtaining unit 701, configured to analyze each obtained state data file to obtain power information of at least one generator operating in each section during offline;
an operation information obtaining unit 702, configured to analyze power information of each generator operating in each section when the generator is off-grid, and determine an actual value of the total main transformer power when all generators operating in each section are off-grid;
a threshold determining unit 703, configured to determine, based on a preset decision model DMN power grid regulation rule, a threshold of the total main transformer power of the power grid during power grid shedding of all the generators running in each section according to the current running mode of each section;
and the operation state determining unit 704 is configured to determine that any one section is in a lower grid stable operation state when the actual value of the lower grid main transformer power corresponding to the any one section is less than or equal to the threshold of the lower grid main transformer power corresponding to the any one section.
Preferably, the operation state determination unit 704 is further configured to:
and when the actual value of the main transformer power of the lower network corresponding to any section is larger than the threshold value of the main transformer power of the lower network corresponding to any section, determining that any section is in the stable operation state of the lower network, and sending alarm information corresponding to any section to the control master station.
The system 700 for determining the power grid operating state based on the DMN power grid regulation rule according to the embodiment of the present invention corresponds to the method 200 for determining the power grid operating state based on the DMN power grid regulation rule according to another embodiment of the present invention, and is not described herein again.
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 application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application 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 application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. 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 (10)
1. A method for determining a power grid operation state based on DMN power grid regulation rules is characterized by comprising the following steps:
acquiring a state data file of each section of a target power grid in a current operation mode in real time, and analyzing each acquired state data file to acquire power information of at least one generator operating in each section when the generator is on the internet;
analyzing power information of each generator running in each section when the generator is on the internet, and determining the actual value of the total main power of the generator on the internet and the unit rotation reserve percentage of each section when all the generators running in each section are on the internet;
determining a threshold value of total main power of an on-line main transformer of all generators running in each section when the generators are on line and a minimum rotation reserve margin of a unit corresponding to each section according to the load level of the target power grid and the current running mode of each section based on a preset decision model DMN power grid regulation and control rule;
and when the actual value of the total main power of the on-line corresponding to any section is less than or equal to the threshold of the total main power of the on-line corresponding to any section, and the percentage of the unit rotation reserve of any section is less than or equal to the minimum rotation reserve margin of the unit corresponding to the section, determining that any section is in the stable operation state of the on-line.
2. The method of claim 1, further comprising:
analyzing each acquired state data file to acquire power information of at least one generator running in each section when the generator is off the network;
analyzing power information of each generator running in each section when the generator is off-grid, and determining the actual value of the off-grid total main transformer power of all the generators running in each section when the generators are off-grid;
determining a threshold value of the total main transformer power of the power grid during the power grid disconnection of all the generators operating in each section according to the current operation mode of each section based on a preset decision model DMN power grid regulation and control rule;
and when the actual value of the main transformer power of the lower net corresponding to any one section is less than or equal to the threshold value of the main transformer power of the lower net corresponding to any one section, determining that any one section is in the stable operation state of the lower net.
3. The method according to claim 1, characterized in that the status data file is a Quality Safety (QS) file based on a common model description Specification (CIM/E) of the power grid; the data file includes: and (4) real-time operation data and load flow calculation parameters of the whole network.
4. The method of claim 1, further comprising:
and when the actual value of the total main power of the main online transformer corresponding to any one section is greater than the threshold value of the total main power of the main online transformer corresponding to any one section, or the percentage of the reserve of the unit rotation of any one section is greater than the minimum reserve margin of the unit rotation corresponding to the section, determining that any one section is in an unstable online running state, and sending alarm information corresponding to any one section to the control master station.
5. The method of claim 2, further comprising:
and when the actual value of the main transformer power of the lower network corresponding to any section is larger than the threshold value of the main transformer power of the lower network corresponding to any section, determining that any section is in the stable operation state of the lower network, and sending alarm information corresponding to any section to the control master station.
6. A system for determining the operating state of a power grid based on DMN power grid regulation rules, the system comprising:
the power information acquisition unit is used for acquiring a state data file of each section of the target power grid in a current operation mode in real time and analyzing each acquired state data file to acquire power information of at least one generator operating in each section when the generator is on the internet;
the operation information acquisition unit is used for analyzing the power information of each generator operating in each section when the generator is on the internet, and determining the actual value of the total main power of the generator on the internet and the unit rotation reserve percentage of each section when all the generators operating in each section are on the internet;
the threshold determining unit is used for determining a threshold of total main grid power of all generators running in each section when the generators are on the internet and a minimum rotation reserve margin of a unit corresponding to each section according to the load level of the target power grid and the current running mode of each section based on a preset decision model DMN power grid regulation and control rule;
and the operation state determining unit is used for determining that any section is in an online stable operation state when the actual value of the online total main transformer power corresponding to the any section is less than or equal to the threshold of the online total main transformer power corresponding to the any section, and the unit rotation standby percentage of the any section is less than or equal to the unit minimum rotation standby margin corresponding to the section.
7. The system of claim 6, further comprising:
the power information acquisition unit is used for analyzing each acquired state data file to acquire power information of at least one generator running in each section when the generator is off the network;
the operation information acquisition unit is used for analyzing the power information of each generator which operates in each section when the generator is off-grid, and determining the actual value of the off-grid total main transformer power of all the generators which operate in each section when the generator is off-grid;
the threshold value determining unit is used for determining the threshold value of the total main transformer power of the power grid during the power grid disconnection of all the generators operating in each section according to the current operation mode of each section based on the preset decision model DMN power grid regulation and control rule;
and the operation state determining unit is used for determining that any section is in a lower net stable operation state when the actual value of the lower net main transformer power corresponding to any section is less than or equal to the threshold value of the lower net main transformer power corresponding to any section.
8. The system according to claim 6, characterized in that the status data file is a Quality Safety (QS) file based on a common model description Specification (CIM/E) of the power grid; the data file includes: and (4) real-time operation data and load flow calculation parameters of the whole network.
9. The system of claim 6, wherein the operating condition determining unit is further configured to:
and when the actual value of the total main power of the main online transformer corresponding to any one section is greater than the threshold value of the total main power of the main online transformer corresponding to any one section, or the percentage of the reserve of the unit rotation of any one section is greater than the minimum reserve margin of the unit rotation corresponding to the section, determining that any one section is in an unstable online running state, and sending alarm information corresponding to any one section to the control master station.
10. The system of claim 7, wherein the operating condition determining unit is further configured to:
and when the actual value of the main transformer power of the lower network corresponding to any section is larger than the threshold value of the main transformer power of the lower network corresponding to any section, determining that any section is in the stable operation state of the lower network, and sending alarm information corresponding to any section to the control master station.
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