CN109193594B - Method, device, server and storage medium for determining power safety protection level - Google Patents
Method, device, server and storage medium for determining power safety protection level Download PDFInfo
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- CN109193594B CN109193594B CN201811339874.4A CN201811339874A CN109193594B CN 109193594 B CN109193594 B CN 109193594B CN 201811339874 A CN201811339874 A CN 201811339874A CN 109193594 B CN109193594 B CN 109193594B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values
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Abstract
The embodiment of the invention relates to the technical field of information security, and discloses a method, a device, a server and a readable storage medium for determining a power security protection level. In the invention, a power distribution station model to be graded is obtained from a grading test model, and the grading test model is used for simulating an electric power system; respectively sending a risk test instruction to each power distribution station model to be graded, and acquiring the number of influenced loads in the administered loads of each power distribution station model to be graded according to the risk test instruction; and respectively determining the safety protection level of each power distribution substation model to be rated according to a preset corresponding relation and the number of the influenced loads, wherein the preset corresponding relation is the corresponding relation between the number of the influenced loads and the safety protection level. The method for determining the electric power safety protection level can accurately and objectively determine the safety protection level corresponding to the electric power system so as to improve the safety of information in the electric power system.
Description
Technical Field
The embodiment of the invention relates to the technical field of information security, in particular to a method, a device, a server and a storage medium for determining the power security protection level.
Background
With the continuous construction and development of the smart power grid, the number of sensors, the scale of an information network and the number of decision units in the power grid are greatly increased, so that the automation degree of the power system is rapidly improved, wherein the information system provides a strong technical support for the operation of the power grid, but if the information system fails, serious faults of the whole power system can be induced.
At present, the influence of faults on the whole power system is reduced as much as possible through three defense lines, which are respectively:
a first line of defense: relay protection and abnormal operation protection, wherein the relay protection refers to high-speed and accurate fault element removal, and the abnormal operation protection refers to rapid fault isolation of protected equipment under the condition of no load loss;
and (3) second defense line: the safety automatic device ensures the safe operation of the power grid, allows a small amount of load to be lost, and avoids element overload and power grid instability;
the third defense line: the power grid breakdown is avoided by adopting all necessary means, for example, out-of-step disconnection and frequency and voltage control.
Therefore, in order to improve the security state of the power grid, it is necessary to test and evaluate the information security of the power system, and at present, a traditional computer network analysis method is usually adopted for evaluation and test of the information security, and vulnerability analysis is performed on the information system under the condition that the information system is maliciously attacked. The traditional computer network analysis method is to model the power system, perform load flow calculation, stability calculation and fault calculation on the built model, evaluate the safety index of the whole power system according to the preset fault on the basis of the calculation result, set various faults on the power grid and perform calculation, thereby determining the safety condition and weak link of the power grid.
At present, the higher the security protection level of an electric power system is, the stronger the corresponding security protection capability is, and when the information service of the electric power system is attacked, the influence on the whole electric power system is the smallest. The information safety hazard mode is represented as damage to business information safety and damage to information system service, and the business information safety means ensuring confidentiality, integrity, availability and the like of information in an information system; system service security refers to ensuring that an information system can provide services timely and efficiently to accomplish a predetermined business objective. The safety protection level refers to the safety protection level which the relevant unit needs to reach for the important information system according to the relevant national laws and national standards, according to the importance degree of the information system in national safety, economic construction and social life, and according to the damage degree of the information system damaged to the national safety, social order, public benefits and the legal rights and interests of the national law and other organizations.
The inventor finds that at least the following problems exist in the prior art: at present, the determination of the safety protection level of the information service is not involved in the test and evaluation of the information safety of the power system, so that the corresponding safety protection cannot be set according to the safety protection level of the information service of each power distribution station in the power system, and the information safety of the power system under the condition of attack is reduced.
Disclosure of Invention
The embodiment of the invention aims to provide a method, a device, a server and a readable storage medium for determining a power safety protection level, so that the safety protection level corresponding to a power system can be accurately and objectively determined to improve the safety of information in the power system.
In order to solve the technical problem, an embodiment of the present invention provides a method for determining a power safety protection level, including: obtaining a power distribution station model to be graded from a grading test model, wherein the grading test model is used for simulating an electric power system; respectively sending a risk test instruction to each power distribution station model to be graded, and acquiring the number of influenced loads in the administered loads of each power distribution station model to be graded according to the risk test instruction; and respectively determining the safety protection level of each power distribution substation model to be rated according to a preset corresponding relation and the number of the influenced loads, wherein the preset corresponding relation is the corresponding relation between the number of the influenced loads and the safety protection level.
The embodiment of the invention also provides a device for determining the power safety protection level, which comprises the following components: the device comprises a first acquisition module, a second acquisition module and a safety protection level determination module; the first obtaining module is used for obtaining a power distribution substation model to be graded from a grading test model, and the grading test model is used for simulating an electric power system; the second acquisition module is used for respectively sending a risk test instruction to each power distribution station model to be graded and acquiring the number of influenced loads in the administered loads of each power distribution station model to be graded according to the risk test instruction; the safety protection level determining module is used for respectively determining the safety protection level of each power distribution substation model to be rated according to a preset corresponding relation and the number of the influenced loads, wherein the preset corresponding relation is the corresponding relation between the number of the influenced loads and the safety protection level.
An embodiment of the present invention further provides a server, including: at least one processor; and a memory communicatively coupled to the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method for determining the power safety protection level.
Embodiments of the present invention also provide a computer-readable storage medium storing a computer program, which when executed by a processor implements the above-mentioned method for determining a power safety protection level.
Compared with the prior art, the method and the device have the advantages that the risk test instruction is sent to each power distribution station model to be graded, the number of affected loads in the administered loads of each power distribution station model to be graded is obtained according to the risk test instruction, the safety protection level of each power distribution station model to be graded is determined according to the preset corresponding relation, the safety protection level of the power distribution station model to be graded can be objectively and quickly determined due to the fact that manual participation is not needed, meanwhile, the grading test model simulates the whole power system, and the determined safety protection level of each power distribution station model to be graded corresponds to the safety protection level of a power distribution station in the actual power system; and because the safety protection level of the power distribution station is determined, the protection measures which accord with the safety protection level are conveniently set for the corresponding power distribution according to the determined safety protection level, and the safety of the information in the power system is improved.
In addition, before obtaining the model of the distribution substation to be rated from the grading test model, the method for determining the power safety protection level further comprises the following steps: acquiring information of each distribution substation, information of each protection device and information of each main control device from an electric power system; and constructing a grading test model according to the information of each power distribution station, the information of each protection device and the information of each main control device. The grading test model is constructed through the information of each power distribution station, the information of each protection device and the information of each main control device in the power system, so that the grading test model is closer to the actual power system, the power system can be accurately simulated through the grading test model, and the accuracy of determining the safety protection level of the model of the power distribution station to be graded is ensured.
In addition, the information of the distribution substation includes: a load level for each load under the distribution substation. The constructed grading test model is closer to an actual power system.
In addition, the grading test model comprises: the system comprises a power distribution system submodel, a protection device submodel and a main control submodel; according to the information of each power distribution station, the information of each protection device and the information of each main control device, a grading test model is constructed, and the grading test model specifically comprises the following steps: determining a power distribution system submodel according to the information of each power distribution station, wherein the power distribution system submodel is used for generating electric energy, transmitting the electric energy and distributing the electric energy; determining a protection device submodel according to the information of each protection device, wherein the protection device submodel is used for protecting equipment models contained in the power distribution system submodel; determining a main control submodel according to the information of each main control device, wherein the main control submodel is used for controlling the power distribution system submodel and the protection device submodel; the power distribution system submodel is connected with the protection device submodel, and the master control submodel is respectively connected with the power distribution system submodel and the protection device submodel. The power distribution system submodel is constructed through the information of the power distribution station, the protection device submodel is determined according to the information of the protection device, the main control submodel is determined according to the information of the main control device, and the whole power system can be simulated accurately through the three submodels.
In addition, before the risk test instruction is sent to each power distribution station model to be rated, the method for determining the power safety protection level further comprises the following steps: determining the risk of the power system according to the communication fault of each communication node in the power system; and determining a risk test instruction of each power distribution substation model to be graded according to the risk of the power system. Because the risk test instruction is determined according to the risk of the power system, the risk test instruction sent to the power distribution station to be graded is more targeted, and the accuracy of determining the safety protection level of the power distribution station model to be graded is improved.
In addition, the load classes include at least two classes; the method includes the steps that risk test instructions are sent to each power distribution substation model to be rated respectively, the number of affected loads in the administered loads of each power distribution substation model to be rated is obtained, and the method specifically includes the following steps: for each power distribution substation model to be graded, the following processing is carried out: and sending a risk test instruction to the power distribution substation model to be graded, acquiring the influenced loads in the governed loads of the power distribution substation model to be graded, and counting the number of the influenced loads in each grade of load grades. Because the load grades of all loads in the power distribution station are different, and the loads with different load grades have different influences on the whole power system, the number of the influenced loads in each grade of load grade is counted, so that the safety protection grade of the power distribution station model to be rated can be accurately determined according to the number of the influenced loads in each grade of load grade.
In addition, for each power distribution station model to be graded, the following processing is performed: if the affected loads comprise first-level loads and the number of the loads belonging to the first-level loads exceeds a first preset threshold value, determining the safety protection level of the power distribution substation to be rated as a fourth level according to a preset corresponding relation; if the affected loads comprise the first-level loads and the number of the loads belonging to the first-level loads does not exceed a first preset threshold value, determining the safety protection level of the power distribution substation model to be rated as a third level according to a preset corresponding relation; if the affected loads comprise secondary loads and the number of the loads belonging to the secondary loads exceeds a first preset threshold value, determining the safety protection level of the power distribution substation model to be rated as a third level according to a preset corresponding relation; if the affected loads comprise secondary loads and the number of the loads belonging to the secondary loads does not exceed a first preset threshold value, determining the safety protection level of the power distribution substation model to be rated as a second level according to a preset corresponding relation; if the affected loads comprise the third-level loads and the number of the loads belonging to the third-level loads exceeds a second preset threshold value, determining the safety protection level of the power distribution substation model to be determined as a second level according to the preset corresponding relation; if the affected loads comprise the third-level loads and the number of the loads belonging to the third-level loads does not exceed a second preset threshold value, determining the safety protection level of the power distribution substation model to be determined as a first level according to a preset corresponding relation; the levels of the safety protection levels from the first level to the fourth level are sequentially increased, and the load levels from the first level load to the third level load are sequentially decreased. By judging the load grade to which the influenced load belongs and according to the number of the loads belonging to each load grade and the preset corresponding relation, the safety protection grade of each power distribution substation model to be graded can be accurately and quickly determined.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic specific flowchart of a method for determining a power safety protection level according to a first embodiment of the present invention;
fig. 2 is a schematic specific flowchart of a method for determining a power safety protection level according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of an apparatus for determining a power safety protection level according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a server according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
A first embodiment of the invention relates to a method of determining a power safety protection level. The method for determining the power safety protection level is applied to terminals such as computers, servers and the like. The specific flow of the method for determining the power safety protection level is shown in fig. 1.
Step 101: and obtaining a power distribution station model to be graded from the grading test model, wherein the grading test model is used for simulating the power system.
Specifically, the power system includes a plurality of power distribution stations, a protection device, and a master control device, wherein the power distribution stations generally include power generation equipment, power transmission equipment, a lightning arrester, and the like because the power distribution stations have functions of power generation, power distribution, and power transmission, for example: generators and transformers, and protective devices are used for protecting equipment in each distribution station, such as relay protective devices, remote terminal control equipment and the like. The main control device is used for controlling the operation of the power distribution station and the protection device, and the main control device controls the operation of the power distribution station and the protection device to realize the scheduling of the power distribution station and the protection device, so that the power distribution station and the protection device can be protected by the main control device through scheduling, for example: power scheduling, state estimation, stability control, etc. It is understood that the power system may further include other functional parts, which are not listed here, and in this embodiment, a grading test model for simulating the power system may be constructed through a distribution substation, a protection device, and a master control device in the power system.
In a specific implementation, before the model of the power distribution substation to be graded is obtained from the grading test model, the information of each power distribution substation, the information of each protection device and the information of each main control device are obtained from the power system; and constructing a grading test model according to the information of each power distribution station, the information of each protection device and the information of each main control device.
In order to facilitate the establishment of the grading test model in this embodiment, the grading test model may be established in a manner of establishing three submodels, and the manner of establishing the grading test model is specifically described below.
According to the information of each power distribution station, the information of each protection device and the information of each main control device, a grading test model is constructed, and the grading test model specifically comprises the following steps: determining a power distribution system submodel according to the information of each power distribution station, wherein the power distribution system submodel is used for generating electric energy, transmitting the electric energy and distributing the electric energy; determining a protection device submodel according to the information of each protection device, wherein the protection device submodel is used for protecting equipment models contained in the power distribution system submodel; and determining a main control submodel according to the information of each main control device, wherein the main control submodel is used for controlling the power distribution system submodel and the protection device submodel.
Specifically, first, an electric power system to be simulated may be determined, and information of each distribution substation may be obtained from the electric power system, where the information of the distribution substation may include location information of each distribution substation, connection relationship between distribution substations, and the like, and may further include a load level of each load governed by the distribution substation, for example, the electric power system includes 3 distribution substations, which are a distribution substation a, a distribution substation B, and a distribution substation C, respectively, and the information of the distribution substation a includes: the location information of the distribution substation A, and the number and type of 5 loads under the jurisdiction of the distribution substation A, and the load level of each load. According to the position information, the connection relation and the like of each distribution station, the power distribution system submodel can be constructed. Of course, the information of the power distribution station may include one or more of the above-listed information, and may further include information (such as power consumption of each load) not listed above, and the specific information of the power distribution station is not limited in this embodiment.
The method comprises the steps of obtaining information of each protection device in the power system, wherein the information of the protection device can comprise position information of the protection device, connection information of the protection device and the like, constructing a protection device sub-model through the information of each protection device, wherein the power distribution system sub-model comprises a power distribution station model, each power distribution station model comprises an equipment model, and the protection device sub-model can protect equipment models contained in the power distribution system sub-model, such as a protection generator model, a transformer model and the like.
Similarly, the information of each master control device in the power system is obtained, the information of the master control device may include position information, connection information of the master control device, and the like, and the master control submodel is constructed according to the position information of each master control device and the connection relationship between each master control device.
The power distribution system submodel is connected with the protection device submodel through the connection relation between the power distribution station and the protection device, the connection relation between the protection device and the main control device and the connection relation between the main control device and the power distribution station, the main control submodel is respectively connected with the power distribution system submodel and the protection device submodel, a grading test model is built, and the whole power system can be simulated accurately through the three submodels.
It is understood that, in order to more accurately simulate an actual power system, other functional components in the power system may also be obtained and supplemented to the rating test model, which is not limited in this embodiment.
After the fixed-level test model is constructed, a power distribution substation model to be fixed-level can be selected from the fixed-level test model, and the selected power distribution substation model to be fixed-level has a unique corresponding power distribution substation in an actual power system.
Step 102: and respectively sending a risk test instruction to each power distribution station model to be rated, and acquiring the number of influenced loads in the administered loads of each power distribution station model to be rated according to the risk test instruction.
In a specific implementation, before a risk test instruction is sent to each power distribution substation model to be rated, the risk of the power system needs to be determined according to the communication fault of each communication node in the power system; and determining a risk test instruction of each power distribution substation model to be graded according to the risk of the power system.
Specifically, because the structures of each power system are different, and the risk types of the power systems with different structures are different, it is necessary to count the communication faults of each communication node in the power system, determine the risk of the power system, and determine the risk test instruction of each power distribution substation model to be rated in the rating test model for simulating the power system according to the risk of the power system.
It should be noted that a communication node in the power system refers to a distribution substation with a communication function, and a communication fault on one communication node can be counted by counting the number of successful packets sent and the number of packets lost on the communication node; communication failures of each communication node in the power system may also be determined using information system vulnerability testing techniques. Of course, other methods may be used to count communication failures, and are not limited to the above-mentioned methods.
It should be noted that after the risk of the power system is determined, a risk test instruction for each power distribution substation model to be rated can be determined, where the risk test instruction refers to adjusting and controlling an equipment model in the power distribution substation model, such as controlling a generator model, a transformer model, a breaker model, and the like. The master control device model can be provided with adjustable controllable instructions such as delay or error transmission, the master control device model transmits the adjustable controllable instructions to the power distribution system submodel, and the power distribution system submodel returns feedback information of the adjustable hole-controllable instructions to the master control device through the communication nodes. The adjustable and controllable equipment, namely, the adjusting parameters in the power distribution system submodel of the grading test model are shown in table 1:
TABLE 1
The following describes a process of sending a risk instruction to each substation to be rated and acquiring the number of affected loads in the governed loads of each substation to be rated model according to the risk test instruction by using a specific example.
For example: the determined risk test instruction comprises 3 instructions (instructions 1, 2 and 3), if two to-be-graded power distribution station models A and C exist, the instruction 1 is input into a main control device submodel in the grading test model, the main control device submodel sends the instruction 1 to the to-be-graded power distribution station A, and similarly, the subsequent instructions 2 and 3 are both sent into the to-be-graded power distribution station model A to respectively obtain the affected loads generated by the 3 instructions, and after the to-be-graded power distribution station model A executes the risk test instruction, the number of the affected loads is obtained through a statistical mode (such as a Monte Carlo method). Similarly, the 3 instructions are respectively sent to the distribution substation C to be graded through a central control device model in the grading test model, and the number of the generated influenced loads is obtained in a statistical mode.
Step 103: and respectively determining the safety protection level of each power distribution substation model to be rated according to a preset corresponding relation and the number of the influenced loads, wherein the preset corresponding relation is the corresponding relation between the number of the influenced loads and the safety protection level.
Specifically, the preset corresponding relationship can be determined by counting the number of affected loads and the degree of loss of the power system under the condition of communication faults occurring in different power system histories. And determining the safety protection level of each power distribution substation model to be rated according to the preset corresponding relation and the number of the influenced loads.
Because the grading test model is constructed by simulating an electric power system, after the model of the power distribution station to be graded is determined, the safety protection level of the power distribution station in the actual electric power system corresponding to the model of the power distribution station to be graded can be determined, and further the safety protection of the corresponding level can be set for the power distribution with the determined safety protection level.
Compared with the prior art, the method and the device have the advantages that the risk test instruction is sent to each power distribution station model to be graded, the number of affected loads in the administered loads of each power distribution station model to be graded is obtained according to the risk test instruction, the safety protection level of each power distribution station model to be graded is determined according to the preset corresponding relation, the safety protection level of the power distribution station model to be graded can be objectively and quickly determined due to the fact that manual participation is not needed, meanwhile, the grading test model simulates the whole power system, and the determined safety protection level of each power distribution station model to be graded corresponds to the safety protection level of a power distribution station in the actual power system; and because the safety protection level of the power distribution station is determined, the protection measures which accord with the safety protection level are conveniently set for the corresponding power distribution according to the determined safety protection level, and the safety of the information in the power system is improved.
A second embodiment of the invention relates to a method of determining a power safety protection level. The second embodiment is an improvement of the first embodiment, and the main improvements are as follows: in the second embodiment of the present invention, the load class of the power distribution substation governed load includes at least two levels, and the obtaining of the number of affected loads in the governed load of each power distribution substation model to be rated is specifically described. The specific flow is shown in fig. 2.
Step 201: and obtaining a power distribution station model to be graded from the grading test model, wherein the grading test model is used for simulating the power system.
Step 202: the following processing is carried out for each power distribution station model to be graded: and sending a risk test instruction to the power distribution substation model to be graded, acquiring the influenced loads in the governed loads of the power distribution substation model to be graded, and counting the number of the influenced loads in each grade of load grades.
Specifically, the load level of the load under the jurisdiction of the power distribution substation comprises at least two levels, the load level is used for indicating the importance degree of the load in the current power system, and the higher the load level is, the more important the load is in the current power system is indicated. After the power distribution substation model to be graded sends the risk test instruction and the power distribution substation model to be graded executes the risk test instruction, the terminal can acquire the affected loads in the managed loads of the power distribution substation model to be graded, count the load grade of each affected load and determine the number of the affected loads in each grade of load grade.
Step 203: and respectively determining the safety protection level of each power distribution substation model to be rated according to a preset corresponding relation and the number of the influenced loads, wherein the preset corresponding relation is the corresponding relation between the number of the influenced loads and the safety protection level.
Specifically, for each substation model to be rated, the following processing is performed: if the affected loads comprise first-level loads and the number of the loads belonging to the first-level loads exceeds a first preset threshold value, determining the safety protection level of the power distribution substation to be rated as a fourth level according to a preset corresponding relation; if the affected loads comprise the first-level loads and the number of the loads belonging to the first-level loads does not exceed a first preset threshold value, determining the safety protection level of the power distribution substation model to be rated as a third level according to a preset corresponding relation; if the affected loads comprise secondary loads and the number of the loads belonging to the secondary loads exceeds a first preset threshold value, determining the safety protection level of the power distribution substation model to be rated as a third level according to a preset corresponding relation; if the affected loads comprise secondary loads and the number of the loads belonging to the secondary loads does not exceed a first preset threshold value, determining the safety protection level of the power distribution substation model to be rated as a second level according to a preset corresponding relation; if the affected loads comprise the third-level loads and the number of the loads belonging to the third-level loads exceeds a second preset threshold value, determining the safety protection level of the power distribution substation model to be determined as a second level according to the preset corresponding relation; if the affected loads comprise the third-level loads and the number of the loads belonging to the third-level loads does not exceed a second preset threshold value, determining the safety protection level of the power distribution substation model to be determined as a first level according to a preset corresponding relation; the levels of the safety protection levels from the first level to the fourth level are sequentially increased, and the load levels from the first level load to the third level load are sequentially decreased.
Specifically, the load grades are divided into three levels, namely: the load level of the primary load is gradually reduced to the load level of the tertiary load, namely the load level of the primary load is the highest, and the load level of the tertiary load is the lowest. The primary load may be defined as: the interruption of the power supply will cause significant political, economic loss or casualty loads; the secondary load may be defined as: the interruption of power supply will cause large political and economic losses or a load causing disorder of order in public places; the three levels of load can then be defined as: except for the first-level load and the second-level load, the other loads belong to third-level loads.
In this embodiment, the safety protection level of the power distribution substation model to be rated is determined according to the number of affected loads in each level of load level and the preset corresponding relationship. The following describes a specific process for determining the safety protection level of the power distribution substation model to be rated according to the preset corresponding relationship by using a specific example.
In order to improve the accuracy of the preset corresponding relation, load grades can be introduced; the first preset threshold and the second preset threshold may be set according to actual needs, in this embodiment, the first preset threshold is set to 3, and the second preset threshold is set to 10, it is understood that the first preset threshold and the second preset threshold are not limited to the values listed in this embodiment, and the preset corresponding relationship shown in table 2 is constructed according to actual needs.
TABLE 2
If the number of the affected loads in the current to-be-rated power distribution substation model is obtained, judging whether the current affected loads contain first-level loads, and if the number of the loads containing the first-level loads and belonging to the first-level loads is more than 3, determining that the safety protection level of the to-be-rated power distribution substation model is the fourth level according to the preset corresponding relation in the table 1; if the number of the loads which contain the primary loads and belong to the primary loads is determined to be not more than 3, determining the safety protection level of the power distribution station model to be graded as a third level according to the preset corresponding relation in the table 1; if the primary load is determined not to be contained, judging whether a secondary load is contained, if the secondary load is determined to be contained and the number of the loads belonging to the secondary load exceeds 3, and determining the safety protection level of the power distribution station model to be graded as a third level according to the preset corresponding relation in the table 1; if the secondary load is determined to be included and the number of the loads belonging to the secondary load is not more than 3, determining the safety protection level of the power distribution substation model to be rated as a second level; if the fact that neither the primary load nor the secondary load is contained is determined, whether the tertiary load is contained is judged, if the fact that the tertiary load is contained is determined, and the number of the loads belonging to the tertiary load exceeds 10, the safety protection level of the power distribution station model to be rated is determined to be the second level according to the preset corresponding relation, and if the fact that the tertiary load is contained is determined, and the number of the loads belonging to the tertiary load does not exceed 10, the safety protection level of the power distribution station model to be rated is determined to be the first level according to the preset corresponding relation.
According to the method for determining the power safety protection level, because the load levels of all loads in the power distribution station are different, and the loads of different load levels have different influences on the whole power system, the number of the influenced loads in each level of load level is counted, so that the safety protection level of the power distribution station model to be determined can be accurately determined according to the number of the influenced loads in each level of load level.
A third embodiment of the present invention relates to an apparatus for determining a power safety protection level, including: the specific structures of the first obtaining module 301, the second obtaining module 302, and the security protection level determining module 303 are as shown in fig. 3:
the first obtaining module 301 is configured to obtain a to-be-graded substation model from a grading test model, where the grading test model is used to simulate an electric power system; the second obtaining module 302 is configured to send a risk test instruction to each to-be-rated substation model, and obtain, according to the risk test instruction, the number of affected loads in the governed loads of each to-be-rated substation model; the safety protection level determining module 303 is configured to determine the safety protection level of each power distribution substation model to be rated according to a preset corresponding relationship and the number of affected loads, where the preset corresponding relationship is a corresponding relationship between the number of affected loads and the safety protection level.
It should be understood that this embodiment is a system example corresponding to the first embodiment, and may be implemented in cooperation with the first embodiment. The related technical details mentioned in the first embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.
It should be noted that each module referred to in this embodiment is a logical module, and in practical applications, one logical unit may be one physical unit, may be a part of one physical unit, and may be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, elements that are not so closely related to solving the technical problems proposed by the present invention are not introduced in the present embodiment, but this does not indicate that other elements are not present in the present embodiment.
A fourth embodiment of the present invention relates to a server 40 including: at least one processor 401; and a memory 402 communicatively coupled to the at least one processor 401; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the method for determining the power safety protection level according to the first embodiment or the second embodiment, and a specific structure of the server 40 is shown in fig. 4.
The memory 402 and the processor 401 are connected by a bus, which may include any number of interconnected buses and bridges that link one or more of the various circuits of the processor 401 and the memory 402. The bus may also link various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface provides an interface between the bus and the transceiver. The transceiver may be one element or a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor is transmitted over a wireless medium via an antenna, which further receives the data and transmits the data to the processor.
The processor 401 is responsible for managing the bus and general processing and may provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And the memory may be used to store data used by the processor in performing operations.
A fifth embodiment of the present invention relates to a computer-readable storage medium storing a computer program which, when executed by a processor, implements the method of determining a power safety protection level of the first embodiment or the second embodiment.
Those skilled in the art can understand that all or part of the steps in the method of the foregoing embodiments may be implemented by a program to instruct related hardware, where the program is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, etc.) or a processor (processor) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (8)
1. A method of determining a level of electrical safety protection, comprising:
obtaining a model of a to-be-graded power distribution station from a grading test model, wherein the grading test model is used for simulating a power system, the model of the to-be-graded power distribution station comprises load grades of each load administered by the to-be-graded power distribution station, and the load grades comprise: a first level load, a second level load and a third level load;
respectively sending a risk test instruction to each power distribution substation model to be graded, and acquiring the number of influenced loads in the administered loads of each power distribution substation model to be graded according to the risk test instruction;
respectively determining the safety protection level of each power distribution substation model to be rated according to a preset corresponding relation and the number of the influenced loads, wherein the preset corresponding relation is the corresponding relation between the number of the influenced loads and the safety protection level;
respectively determining the safety protection level of each power distribution substation model to be rated according to the preset corresponding relation and the number of the influenced loads, and specifically comprising the following steps:
for each power distribution substation model to be graded, the following processing is carried out:
if the affected loads are determined to include the first-level loads, and the number of the first-level loads exceeds a first preset threshold, determining the safety protection level of the power distribution substation to be rated as a fourth level according to the preset corresponding relation;
if the affected load is determined to comprise the first-level load and the number of the loads belonging to the first-level load does not exceed a first preset threshold value, determining the safety protection level of the power distribution substation model to be rated as a third level according to the preset corresponding relation;
if the affected loads are determined to include the secondary loads, and the number of the loads belonging to the secondary loads exceeds a first preset threshold value, determining the safety protection level of the power distribution substation model to be rated as a third level according to the preset corresponding relation;
if the affected load is determined to comprise the secondary load and the number of the loads belonging to the secondary load does not exceed a first preset threshold value, determining the safety protection level of the power distribution substation model to be rated as a second level according to the preset corresponding relation;
if the affected load is determined to comprise the third-level load and the number of the loads belonging to the third-level load exceeds a second preset threshold, determining the safety protection level of the power distribution substation model to be rated as a second level according to the preset corresponding relation;
if the affected load is determined to comprise the third-level load and the number of the loads belonging to the third-level load does not exceed a second preset threshold, determining the safety protection level of the power distribution substation model to be rated as a first level according to the preset corresponding relation;
the levels of the safety protection levels from the first level to the fourth level are sequentially increased, and the load levels from the first level load to the third level load are sequentially decreased.
2. The method for determining the level of power safety protection as claimed in claim 1, wherein before obtaining the model of the distribution substation to be rated from the rating test model, the method for determining the level of power safety protection further comprises:
acquiring information of each distribution substation, information of each protection device and information of each main control device from the power system;
and constructing the grading test model according to the information of each power distribution station, the information of each protection device and the information of each main control device.
3. The method for determining a level of power safety protection according to claim 2, wherein the grading test model comprises: the system comprises a power distribution system submodel, a protection device submodel and a main control submodel;
according to the information of each power distribution station, the information of each protection device and the information of each main control device, the grading test model is constructed, and the method specifically comprises the following steps:
determining the power distribution system submodel according to the information of each power distribution station, wherein the power distribution system submodel is used for generating electric energy, transmitting the electric energy and distributing the electric energy;
determining the protection device submodel according to the information of each protection device, wherein the protection device submodel is used for protecting equipment models contained in the power distribution system submodel;
determining the master control submodel according to the information of each master control device, wherein the master control submodel is used for controlling the power distribution system submodel and the protection device submodel;
the power distribution system submodel is connected with the protection device submodel, and the master control submodel is respectively connected with the power distribution system submodel and the protection device submodel.
4. A method for determining a level of electrical safety protection according to any one of claims 1 to 3, wherein before sending the risk test instruction to each substation model to be rated, the method for determining a level of electrical safety protection further comprises:
determining the risk of the power system according to the communication fault of each communication node in the power system;
and determining a risk test instruction of each power distribution substation model to be graded according to the risk of the power system.
5. The method of determining a level of power safety protection according to claim 1, wherein the load level comprises at least two levels;
the method includes the steps that risk test instructions are sent to each power distribution substation model to be rated respectively, the number of affected loads in the administered loads of each power distribution substation model to be rated is obtained, and the method specifically includes the following steps:
for each power distribution substation model to be graded, the following processing is carried out:
and sending a risk test instruction to the power distribution substation model to be graded, acquiring the influenced loads in the administered loads of the power distribution substation model to be graded, and counting the number of the influenced loads in each grade of load grades.
6. An apparatus for determining a power safety protection level, comprising: the device comprises a first acquisition module, a second acquisition module and a safety protection level determination module;
the first obtaining module is used for obtaining a to-be-graded power distribution station model from a grading test model, the grading test model is used for simulating an electric power system, the to-be-graded power distribution station model comprises load grades of each load administered by the to-be-graded power distribution station, and the load grades comprise: a first level load, a second level load and a third level load;
the second acquisition module is used for respectively sending a risk test instruction to each power distribution station model to be graded and acquiring the number of influenced loads in the administered loads of each power distribution station model to be graded according to the risk test instruction;
the safety protection level determining module is used for respectively determining the safety protection level of each power distribution substation model to be rated according to a preset corresponding relation and the number of the influenced loads, wherein the preset corresponding relation is the corresponding relation between the number of the influenced loads and the safety protection level;
the safety protection level determining module is specifically configured to perform the following processing for each to-be-rated power distribution substation model:
if the affected loads are determined to include the first-level loads, and the number of the first-level loads exceeds a first preset threshold, determining the safety protection level of the power distribution substation to be rated as a fourth level according to the preset corresponding relation;
if the affected load is determined to comprise the first-level load and the number of the loads belonging to the first-level load does not exceed a first preset threshold value, determining the safety protection level of the power distribution substation model to be rated as a third level according to the preset corresponding relation;
if the affected loads are determined to include the secondary loads, and the number of the loads belonging to the secondary loads exceeds a first preset threshold value, determining the safety protection level of the power distribution substation model to be rated as a third level according to the preset corresponding relation;
if the affected load is determined to comprise the secondary load and the number of the loads belonging to the secondary load does not exceed a first preset threshold value, determining the safety protection level of the power distribution substation model to be rated as a second level according to the preset corresponding relation;
if the affected load is determined to comprise the third-level load and the number of the loads belonging to the third-level load exceeds a second preset threshold, determining the safety protection level of the power distribution substation model to be rated as a second level according to the preset corresponding relation;
if the affected load is determined to comprise the third-level load and the number of the loads belonging to the third-level load does not exceed a second preset threshold, determining the safety protection level of the power distribution substation model to be rated as a first level according to the preset corresponding relation;
the levels of the safety protection levels from the first level to the fourth level are sequentially increased, and the load levels from the first level load to the third level load are sequentially decreased.
7. A server, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a method of determining a level of power safety protection as claimed in any one of claims 1 to 5.
8. A computer-readable storage medium, storing a computer program, wherein the computer program, when executed by a processor, implements the method of determining a power safety protection level of any of claims 1 to 5.
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