CN109672175B - Power grid control method and device - Google Patents
Power grid control method and device Download PDFInfo
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- CN109672175B CN109672175B CN201811648954.8A CN201811648954A CN109672175B CN 109672175 B CN109672175 B CN 109672175B CN 201811648954 A CN201811648954 A CN 201811648954A CN 109672175 B CN109672175 B CN 109672175B
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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Abstract
The invention discloses a power grid control method and device. Wherein the method comprises the following steps: establishing a database, wherein the database stores power grid defect data, corresponding defect processing modes and related standard data; collecting running state information of a power grid; according to the running state information, a database is called to determine a power grid control method, wherein the power grid control method comprises at least one of the following steps: a power grid operation method, a power grid overhaul method or a recovery method after failure; and controlling the power grid according to the power grid control method. The invention solves the technical problems of poor continuity and reliability of the power grid control method in the related technology, which depends on the local current or the local voltage of the transformer substation in the power grid for control.
Description
Technical Field
The invention relates to the field of electric control, in particular to a power grid control method and device.
Background
The power grid is a circuit general term for supplying power to an area, and because the voltage of the circuit is different in the power grid, a plurality of power grid devices are usually required to coordinate to supply power to users. In a huge power grid, various faults and problems often occur in a circuit, a standby power supply is needed to be put into, the standby power supply is automatically put into, whether the operation is performed is usually determined according to information such as local current, local voltage and the like, but the mode cannot adapt to the operation mode requirements of a complex power grid, and the continuity and reliability of power supply of the power grid are reduced.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the invention provides a power grid control method and a device, which at least solve the technical problems of poor continuity and reliability of the power grid control method in the related art by controlling the local current or the local voltage of a transformer substation in a power grid.
According to an aspect of an embodiment of the present invention, there is provided a power grid control method, including: establishing a database, wherein the database stores power grid defect data, corresponding defect processing modes and related standard data; collecting the running state information of the power grid; according to the running state information, calling the database to determine a power grid control method, wherein the power grid control method comprises at least one of the following steps: a power grid operation method, a power grid overhaul method or a recovery method after failure; and controlling the power grid according to the power grid control method.
Optionally, when the power grid control method is a power grid operation method, collecting operation state information of the power grid includes: collecting first actual running state information of the power grid equipment; according to the processing information, invoking the database to determine a power grid control method comprises the following steps: standard running state information of power grid equipment in the power grid under a normal running condition is obtained from the database; judging whether the power grid equipment of the equipment fails or not according to the standard running state information and the first actual running state information; and under the condition that the power grid equipment has no fault, determining that the power grid normally operates.
Optionally, determining that the power grid is operating normally includes: according to the standard running state information and the actual running state information, predicting the state of the power grid through a first prediction model, and judging the safety of a power grid circuit, wherein the first prediction model is a deep learning model or a machine learning model; under the condition that the safety of the power grid circuit is higher than a safety threshold, determining that the power grid normally operates; and sending out early warning under the condition that the safety of the power grid circuit is not higher than a safety threshold value.
Optionally, before predicting the state of the power grid according to the standard operation state information and the actual operation state information by using the second prediction model, the method includes: judging whether the power grid equipment acts correctly or not, and executing the step of judging the safety of a power grid circuit by predicting the state of the power grid according to the standard running state information and the actual running state information under the condition that the power grid equipment acts correctly; wherein the second prediction model is a deep learning model or a machine learning model.
Optionally, when the power grid control method is an overhaul method, invoking the database to determine the power grid control method according to the processing information includes: obtaining a standard overhaul method from the database, and overhauling according to the standard overhaul method; in the process of executing the standard maintenance method, comparing the relevant standard information corresponding to the standard maintenance method according to the relevant information of the monitoring power grid circuit; an operation warning is issued in case the relevant information exceeds a correct threshold of the relevant standard information.
Optionally, in the case that the power grid control method is a recovery method after a fault, collecting the operation state information of the power grid includes: collecting second actual running state information of the power grid equipment; according to the processing information, invoking the database to determine a power grid control method comprises the following steps: standard running state information of power grid equipment in the power grid under a normal running condition is obtained from the database; judging whether the power grid equipment has eliminated faults according to the standard running state information and the second actual running state information; and under the condition that the power grid equipment is eliminated, according to a preset recovery method, recovering by the power grid control equipment according to the recovery method.
Optionally, according to a preset recovery method, recovering by the power grid control device according to the recovery method includes: generating an operation ticket according to the recovery method; uploading the operation ticket to a power grid schedule, and performing control operation on the power grid by the power grid schedule according to the operation ticket.
Optionally, the power grid device includes at least one of: and a transformer substation and spare power automatic switching device.
According to another aspect of the embodiment of the present invention, there is also provided a power grid control device, including: the system comprises a building module, a verification module and a verification module, wherein the building module is used for building a trusted database, wherein the trusted database stores power grid defect data, corresponding defect processing modes and related standard data; the acquisition module is used for acquiring the running state information of the power grid; the calling module is used for calling the database to determine a power grid control method according to the running state information, wherein the power grid control method comprises at least one of the following steps: a power grid operation method, a power grid overhaul method or a recovery method after failure; and the control module is used for controlling the power grid according to the power grid control method.
According to another aspect of the embodiments of the present invention, there is further provided a storage medium including a stored program, where the program, when executed, controls a device in which the storage medium is located to perform any one of the methods described above.
According to another aspect of the embodiment of the present invention, there is also provided a processor, where the processor is configured to execute a program, where the program executes any one of the methods described above.
In the embodiment of the invention, a database is established, wherein the database stores power grid defect data, corresponding defect processing modes and related standard data; collecting running state information of a power grid; according to the running state information, a database is called to determine a power grid control method, wherein the power grid control method comprises at least one of the following steps: a power grid operation method, a power grid overhaul method or a recovery method after failure; according to the power grid control method, the power grid is controlled, the power grid is analyzed and judged through data in a database and collected actual power grid information, faults are predicted, the purpose that faults possibly occurring in the power grid are prevented, the power grid can be guaranteed to stably operate for a long time is achieved, the technical effect of improving the continuity and reliability of the operation of the power grid is achieved, and the technical problems that in the related art, the power grid control method depends on the local current or the local voltage of a transformer substation in the power grid to control and the continuity and reliability are poor are solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a flow chart of a method of grid control according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a general embodiment according to an embodiment of the present invention;
FIG. 3 is a flow chart of a normal operation method according to an embodiment of the present invention;
FIG. 4 is a flow chart of a service method according to an embodiment of the invention;
FIG. 5 is a flow chart of a fault or exception handling method according to an embodiment of the present invention;
FIG. 6 is a flow chart of a post-failure recovery method according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a grid control device according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
According to an embodiment of the present invention, a method embodiment of a power grid control method is provided, it being noted that the steps shown in the flowchart of the figures may be performed in a computer system, such as a set of computer executable instructions, and that, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in an order different from that shown or described herein.
Fig. 1 is a flowchart of a power grid control method according to an embodiment of the present invention, as shown in fig. 1, the method includes the steps of:
step S102, a database is established, wherein the database stores power grid defect data, corresponding defect processing modes and related standard data;
step S104, collecting the running state information of the power grid;
step S106, according to the running state information, a database is called to determine a power grid control method, wherein the power grid control method comprises at least one of the following steps: a power grid operation method, a power grid overhaul method or a recovery method after failure;
step S108, the power grid is controlled according to the power grid control method.
Through the steps, a database can be established, wherein the database stores power grid defect data, corresponding defect processing modes and related standard data; collecting running state information of a power grid; according to the running state information, a database is called to determine a power grid control method, wherein the power grid control method comprises at least one of the following steps: a power grid operation method, a power grid overhaul method or a recovery method after failure; according to the power grid control method, the power grid is controlled, the power grid is analyzed and judged through data in a database and collected actual power grid information, faults are predicted, the purpose that faults possibly occurring in the power grid are prevented, the power grid can be guaranteed to stably operate for a long time is achieved, the technical effect of improving the continuity and reliability of the operation of the power grid is achieved, and the technical problems that in the related art, the power grid control method depends on the local current or the local voltage of a transformer substation in the power grid to control and the continuity and reliability are poor are solved.
The database may be a memory or a server. The database can be a trusted database, and stores power grid defect data, corresponding defect processing modes and related standard data, wherein the power grid defect data comprises calendar defect data and common defect data; the corresponding defect processing modes include a historical defect processing mode corresponding to the historical defect data and a common defect processing mode corresponding to the common defect data. The relevant standard data include execution standards, operation standards and the like, and are used for controlling the power grid.
The operation state information of the power grid can be circuit parameter information of the power grid, such as voltage and current of a bus; the system can also be state information of power grid equipment, such as information of working state, opening and closing state and the like of the power grid equipment, wherein the power grid equipment can be a transformer substation, a circuit breaker, a spare power automatic switching device, a disconnecting link, a power adapter, a power supply, a standby power supply and the like. The opening and closing of the breaker, the position of the knife switch, the voltage of the power supply and the like.
The method for determining the circuit control by calling the database according to the operation state information can be based on a large number of standard control methods in the database and the collected operation state information in the actual state, so that the circuit control method in the actual operation state is corrected, the corrected operation state of the power grid is predicted, and the continuity and stability of the power grid work are effectively improved. The circuit control method comprises a circuit operation method under the normal condition of the power grid, a circuit maintenance method under the fault condition of the power grid, a recovery method after the fault condition of the power grid and the like.
The control of the power grid according to the circuit control method may be that the power grid device is controlled to operate by the controller by sending the control method to the controller or the power grid device, or the power grid device is directly operated to control the power grid circuit.
Optionally, when the power grid control method is a power grid operation method, collecting operation state information of the power grid includes: collecting first actual running state information of power grid equipment; according to the processing information, calling a database to determine a power grid control method comprises the following steps: standard running state information of power grid equipment in a power grid under a normal running condition is obtained from a database; judging whether the equipment power grid equipment fails or not according to the standard running state information and the first actual running state information; and under the condition that the power grid equipment has no fault, determining that the power grid normally operates.
The first actual operation state information may be power supply state information of an important load in the transformer substation, including a voltage of a bus, a working state of the spare power automatic switching device, a state of a breaker and a disconnecting link in a power grid related to the important load, and the like.
The standard running state information of the power grid equipment in the power grid under the normal running condition is obtained from the database; judging whether the equipment of the power grid is faulty according to the standard running state information and the first actual running state information, comparing the running parameters of the power grid in the actual condition with the running parameters of the standard condition in a comparison mode, and recognizing that the first actual running state information is identical with the standard running state information and determining that the power grid circuit is faulty if the first actual running state information does not exceed the qualified threshold range of the standard running state information.
Optionally, determining that the power grid is operating normally includes: according to the standard running state information and the actual running state information, predicting the state of the power grid through a first prediction model, and judging the safety of a power grid circuit, wherein the first prediction model is a deep learning model or a machine learning model; under the condition that the safety of the power grid circuit is higher than a safety threshold, determining that the power grid normally operates; and sending out early warning under the condition that the safety of the power grid circuit is not higher than the safety threshold value.
The judging of the safety of the power grid circuit comprises predicting the possibility of failure of the power grid circuit, namely the possibility of safe operation, according to the current power grid operation state information, and determining whether the power grid circuit is safe or not according to the possibility. For example, by predicting the safety of the power grid, determining that the power grid is operating properly if the safety of the power grid circuit is above a safety threshold; and sending out early warning under the condition that the safety of the power grid circuit is not higher than the safety threshold value. The prediction model can be a deep learning model and a machine learning model, has prediction capability through a large amount of data training, and the training data can be historical fault data and historical power grid circuit operation state information before the fault occurs.
Optionally, before predicting the state of the power grid according to the standard operation state information and the actual operation state information by using the second prediction model, the method includes: judging whether the power grid equipment acts correctly or not, and executing the step of judging the safety of a power grid circuit by predicting the state of the power grid according to the standard running state information and the actual running state information under the condition that the power grid equipment acts correctly; the second prediction model is a deep learning model or a machine learning model.
In the case of overload or other situations of the power supply line of the load in the station, the pressure of the power grid needs to be relieved by a load back-supply mode. Judging whether the automatic backup switching device acts correctly or not before the load is reversed, and executing the automatic backup switching device in a load reversing mode and continuing to execute the following steps under the condition that the automatic backup switching device can act correctly; under the condition that the spare power automatic switching device cannot act correctly, early warning is needed to prompt an operator to repair the spare power automatic switching device, or redundant external power supply circuit input is controlled through a transport detection platform, so that the situation that the load in the station loses an alternating current power supply and related power grid equipment is paralyzed is avoided.
Optionally, when the power grid control method is an overhaul method, invoking the database to determine the power grid control method according to the processing information includes: obtaining a standard overhaul method from the database, and overhauling according to the standard overhaul method; in the process of executing the standard maintenance method, comparing the relevant information of the monitoring power grid circuit with the relevant standard information corresponding to the standard maintenance method; in case the relevant information exceeds the correct threshold of the relevant standard information, an operation warning is issued.
The maintenance method can be a standard maintenance mode stored in the database or a maintenance mode corresponding to the defect, when the maintenance mode is executed, the operation state parameters of the power grid circuit are changed, the actual power grid operation state change caused by the maintenance mode is needed to be compared with the power grid operation state change under the operation of the standard maintenance mode to determine whether the power grid circuit is developed according to the expected direction of the standard maintenance mode, and when the power grid circuit is different from the expected change of the standard maintenance mode, an alarm is given. For example, in the process of executing the standard maintenance method, according to the related information of the monitoring power grid circuit, the related standard information corresponding to the standard maintenance method is compared; in case the relevant information exceeds the correct threshold of the relevant standard information, an operation warning is issued.
Optionally, in the case that the power grid control method is a recovery method after a fault, collecting operation state information of the power grid includes: collecting second actual running state information of the power grid equipment; according to the processing information, calling a database to determine a power grid control method comprises the following steps: standard running state information of power grid equipment in a power grid under a normal running condition is obtained from a database; judging whether the equipment power grid equipment has eliminated faults according to the standard running state information and the second actual running state information; and under the condition of eliminating the power grid equipment faults, recovering by the power grid control equipment according to a preset recovery method.
After the power grid circuit is subjected to fault elimination, the running state of the power grid circuit needs to be restored to the normal running state before the fault occurs, and the second actual running state information of the power grid equipment can be acquired; standard running state information of power grid equipment in a power grid under a normal running condition is obtained from a database; judging whether the equipment power grid equipment has eliminated faults according to the standard running state information and the second actual running state information; and under the condition of eliminating the power grid equipment faults, recovering by the power grid control equipment according to a preset recovery method.
Optionally, according to a preset recovery method, recovering by the power grid control device according to the recovery method includes: generating an operation ticket according to the recovery method; uploading the operation ticket to a power grid schedule, and performing control operation on the power grid by the power grid schedule according to the operation ticket.
After fault recovery, according to a preset strategy, an operation ticket reporting schedule is automatically generated, after the schedule confirmation, the rapid and automatic batch recovery investment of the load is realized, the complexity of manual operation in a traditional mode is reduced, the recovery efficiency of the transformer substation fault is improved, the load power-off time is reduced, and the efficiency and the safety of load recovery and load back-supply are improved.
Optionally, the power grid device includes at least one of: and a transformer substation and spare power automatic switching device.
It should be noted that this embodiment also provides an alternative implementation, and this implementation is described in detail below.
In the related art, the loads for the substation can be divided into the following 5 types: ac power load, dc power load, UPS power load, accident lighting power load, communication power load. At present, the load back-up in the transformer substation is mainly realized by a spare power automatic switching mode in the transformer substation. The standby power automatic switching device is characterized in that the standby power automatic switching device can switch to the standby power to supply power in time when the power failure can not supply power to a bus through the information such as local voltage, current and the like, and the control contact of the relay control system is automatically closed at the moment to automatically switch the standby power into use.
The load reverse supply of the substation is realized mainly by a mode of automatic switching in the substation, and depends on local information; the off-site load reverse supply of the transformer substation is generally realized through an area automatic switching or distribution network scheduling system, and according to the grid structure of the power grid, the off-site load reverse supply is based on area real-time operation information and matched with a protection control system so as to enhance the capability of quickly isolating faults, improve the self-healing capability of the power grid and improve the power supply reliability of the load in the area.
The automatic switching device ensures the reliability of power supply and the safety of a system to a certain extent, but in certain cases, the automatic switching device needs to be locked, such as bus faults, breaker failures, breaker hand-tripping commands, station backup protection actions and the like, and in these cases, a contact point needs to be provided and connected to the locking opening of the automatic switching device. In addition, the conventional automatic backup power switching is based on-site information, so that the problem that the automatic switching of the transformer substation standby power supply at an open loop point cannot be adapted to the change of an operation mode, and the problem that the power supply is recovered from a complex system such as the automatic switching of a remote standby power supply is solved, and certain risks exist in power supply continuity and reliability.
As the power grid scale increases, the operation characteristics are more complex, the requirements on the safety and stable operation and the power supply reliability of the power grid are higher, the current on-site information-based spare power automatic switching strategy can not completely meet the requirements on the power supply safety, stability and reliability of the large-scale urban power grid. Based on the requirements of power grid preventive control, fault isolation, correction control, emergency control and recovery control, a set of regional spare power automatic switching strategy based on wide area data information of the power grid is established, so that current running state evaluation of the power grid is provided through real-time monitoring and analysis based on a wide area data platform under the conditions of daily running, state change and emergency; the fault is precisely positioned and selectively isolated in a minimum range by utilizing the multipoint measurement data of the power grid and the operation mode; the frequency stability of the wide-area power grid is realized by adopting a safe and stable control means, the success rate of reclosing or standby power supply closing is improved, the safe automatic device systems such as overload load shedding, low-frequency low-voltage load reduction and the like are realized, the protection self-adaptive coordination control is realized, the quick recovery of power supply is realized, and the reliability of power supply is ensured; under the condition of sudden power grid faults, the self-healing adjustment of the power grid is realized through a real-time control function based on a wide area data platform of the power grid. The whole process of the power grid is controlled in a cooperative and optimized way.
The problem of load classification is not considered in the automatic switching of the spare power in the station and the automatic switching of the regional spare power, and when overload is predicted to occur, the automatic switching of the spare power is generally locked or the load is cut indiscriminately. Blocking the backup automatic switching will lose the full load of the substation. And by adopting an indiscriminate load shedding measure, part of important loads can be lost, and small social influence can be generated when the load shedding measure is serious.
The embodiment provides a load back-off strategy in a transformer substation, changes the judging mode that a traditional in-station automatic backup power switching device only depends on local voltage and current of a bus, and provides the load back-off strategy in the aspects of cooperation analysis and the like of various running modes of automatic backup power switching. The method comprises the following steps: firstly, a database is established for power supply states, transfer operations and the like of loads in 500kV/220kV/110kV/35kV substations, wherein the database comprises the following components: all defect data and defect treatment measures of the power grid in the past; measures for handling accidents of the power grid in the past; the established grid operation regulations, and specific methods of operation. Secondly, a knowledge base for supporting important load transfer is generated by establishing a supporting database and a typical operation base and combining the construction of electrical equipment, equipment principles, equipment operation requirements and the like of the transformer substation. And finally, providing a strategy for transferring the load in the transformer substation on the basis of the analysis. The system comprises four modes of normal operation mode strategy, maintenance mode strategy, fault or abnormal mode strategy and fault recovery mode strategy.
Fig. 2 is a schematic diagram of a general embodiment according to an embodiment of the present invention, as shown in fig. 2, a single substation is taken as a study object, a load back-off software module is added in a main device monitoring system in the substation, a back-off strategy of a load under a fault and abnormal condition is generated by using related data information, load back-off strategy supporting information and a corresponding back-off strategy scheme in the main device monitoring system, and the strategy is pushed to an I-zone centralized control server (can also be displayed in a main device monitoring system workstation in the substation), further, the back-off strategy is pushed to a safety III-zone management platform and a terminal through a forward isolation device, and after the manual determination, the strategy can be retrieved and subsequently executed through an operation and maintenance work workstation in the future.
The following describes the above four modes of strategy in detail, specifically as follows:
fig. 3 is a flowchart of a normal operation method according to an embodiment of the present invention, and as shown in fig. 3, a normal operation mode policy is specifically as follows:
a) The power supply state of important loads in the station is monitored in real time, and the power supply state comprises the voltage of each section of bus of 10kV and 400V, the working state of each spare power automatic switching device, the position and state of a circuit breaker and a disconnecting link of each important load and other information. The information of the monitoring is shown in table 1, and table 1 is a table of information required to be monitored. The data is mainly obtained from an intelligent error prevention system, an auxiliary equipment monitoring system and the like.
TABLE 1
b) When the transformer substation normally operates, the safety of the important load power supply loop is judged by utilizing equipment data information (including conventional equipment position state, abnormal alarm information, voltage current, temperature and the like) and combining technical methods of data cleaning, data analysis and the like based on intelligent judging technology of equipment faults and abnormal states and based on analysis of the safety of the important load power supply loop in the transformer substation. Such as:
the 10kV I section is currently used as a main power supply, and the 10kV II section serving as a standby fails to exit or is in a cold standby state, so that the standby power supply can not be put into operation when the main power supply is abnormal.
The station electricity 10kV bus I and II section contact switch is at the manual position. At the moment, early warning is actively sent out to prompt that the standby 10kV II section needs to be checked, and investment is restored; or the external power supply circuit serving as redundancy is connected to avoid the loss of alternating current power supply of the load in the station.
The direct-current power supply charger supplies power for a single power supply.
The 400V bus voltage is too high, so that the direct current module can be damaged, and early warning is actively sent out.
The detection value of the direct current power supply is abnormal, the detection battery is possibly damaged, and early warning is actively sent out.
Fig. 4 is a flowchart of an inspection method according to an embodiment of the present invention, and as shown in fig. 4, an inspection mode strategy is specifically as follows:
a) When the transformer substation is overhauled, an important load transfer operation strategy is generated based on a typical operation library, and load transfer operation is supported. The policy may be visually presented.
b) In the overhaul process, relevant information of a power supply loop of an important load in the load transferring process, such as the switching of a soft pressing plate, a hard pressing plate, a contact switch and a wire inlet switch, the operation states of a circuit breaker and a disconnecting switch and the like, are monitored in real time, compared with a strategy generated in advance, and an alarm is given when an operation error is found, and the alarm information is sent to an intelligent operation and detection platform and a mobile operation terminal through a software module.
FIG. 5 is a flow chart of a fault or exception handling method according to an embodiment of the present invention, as shown in FIG. 5, the fault or exception mode strategy is specifically as follows:
a) When faults and anomalies occur to a power supply line of the load in the station, if the spare power automatic switching device is judged to not act correctly, for example, a 10kV I section is used as a main power supply, the 10kV I section breaks down and exits, and a 10kV II section used as a spare is not put into the limited time range, so that a large risk of losing power supply can occur to the important load in the station. At the moment, an active alarm is given to prompt that the standby power supply line and the standby automatic switching device need to be checked, and the input is recovered; or the intelligent operation and detection platform is used for controlling the input of redundant external power supply lines so as to avoid the loss of alternating current power supply of the load in the station.
b) When faults and anomalies occur to two power supply lines of the load in the station, at the moment, an early warning is sent out according to a pre-established important load back-supply supporting strategy, and the power supply lines are monitored. If the power supply line is not recovered within a certain time (if the power supply line is in an unreliability state and can be recovered for a long time), an alarm is sent to prompt that partial load needs to be cut off so as to ensure continuous power supply of important loads such as fire protection, security protection and the like.
Fig. 6 is a flowchart of a post-failure recovery method according to an embodiment of the present invention, as shown in fig. 6, in the following manner: after fault recovery, according to a preset strategy, an operation ticket reporting schedule is automatically generated, after the schedule confirmation, the rapid and automatic batch recovery investment of the load is realized, the complexity of manual operation in a traditional mode is reduced, the recovery efficiency of the transformer substation fault is improved, the power failure time of the load is reduced, and the efficiency and the safety of load recovery and reverse supply are improved.
According to the method, on the basis of a traditional judging mode only depending on local voltage and current of a bus, the historical operation data, the real-time voltage of each section of 10kV and 400V bus, the working state of each spare power automatic switching device, the information of the position and state of each load-related loop circuit breaker and knife switch and the like are comprehensively utilized, and the method has the characteristics of intelligent acquisition, intelligent judgment, intelligent analysis, intelligent pushing and the like.
Fig. 7 is a schematic diagram of a power grid control device according to an embodiment of the present invention, as shown in fig. 7, and according to another aspect of the embodiment of the present invention, there is further provided a power grid control device, including: the device is described in detail below as a setup module 72, an acquisition module 74, a call module 76, and a control module 78.
The establishing module 72 is configured to establish a trusted database, where the trusted database stores power grid defect data, corresponding defect processing modes, and related standard data; the acquisition module 74 is used for acquiring the running state information of the power grid; a calling module 76 for calling the database to determine a grid control method according to the operation state information, wherein the grid control method comprises at least one of the following: a power grid operation method, a power grid overhaul method or a recovery method after failure; the control module 78 is configured to control the power grid according to a power grid control method.
According to another aspect of the embodiments of the present invention, there is also provided a storage medium, including a stored program, where the program, when executed, controls a device in which the storage medium is located to perform any one of the methods described above.
According to another aspect of the embodiment of the present invention, there is also provided a processor, configured to execute a program, where the program executes the method of any one of the above.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (7)
1. A method of grid control, comprising:
establishing a database, wherein the database stores power grid defect data, corresponding defect processing modes and related standard data;
collecting the running state information of the power grid;
according to the running state information, calling the database to determine a power grid control method, wherein the power grid control method comprises a power grid running method, a power grid maintenance method or a recovery method after faults;
according to the power grid control method, controlling a power grid;
the power grid control method is sent to a controller or power grid equipment, the controller controls the power grid equipment to act, or the power grid equipment directly acts so as to control a power grid circuit, and the power grid equipment at least comprises a standby automatic switching device;
when the power grid control method is an overhaul method, according to the running state information, calling the database to determine the power grid control method comprises the following steps:
obtaining a standard overhaul method from the database, and overhauling according to the standard overhaul method;
in the process of executing the standard maintenance method, comparing the relevant standard information corresponding to the standard maintenance method according to the relevant information of the monitoring power grid circuit;
issuing an operation warning in case the related information exceeds a correct threshold of the related standard information;
when the power grid control method is a power grid operation method, collecting operation state information of the power grid includes: collecting first actual running state information of the power grid equipment;
according to the first actual running state information, the method for determining the power grid by calling the database comprises the following steps:
standard running state information of power grid equipment in the power grid under a normal running condition is obtained from the database;
judging whether the power grid equipment fails or not according to the standard running state information and the first actual running state information;
under the condition that the power grid equipment has no fault, determining that the power grid normally operates;
the first actual running state information is power supply state information of important loads in the transformer substation and comprises voltage of a bus, working state of the spare power automatic switching device and states of a breaker and a disconnecting link in a power grid related to the important loads;
when the power grid control method is a recovery method after a fault, collecting the running state information of the power grid includes: collecting second actual running state information of the power grid equipment;
according to the second actual running state information, the method for determining the power grid by calling the database comprises the following steps:
standard running state information of power grid equipment in the power grid under a normal running condition is obtained from the database;
judging whether the power grid equipment has eliminated faults according to the standard running state information and the second actual running state information;
and under the condition that the power grid equipment is eliminated, according to a preset recovery method, recovering by the power grid control equipment according to the recovery method.
2. The method of claim 1, wherein determining that the grid is operating properly comprises:
according to the standard running state information and the actual running state information, predicting the state of the power grid through a first prediction model, and judging the safety of a power grid circuit, wherein the first prediction model is a deep learning model or a machine learning model;
under the condition that the safety of the power grid circuit is higher than a safety threshold, determining that the power grid normally operates;
and sending out early warning under the condition that the safety of the power grid circuit is not higher than a safety threshold value.
3. The method of claim 2, wherein prior to predicting the state of the power grid by the first predictive model based on the standard operating state information, and the actual operating state information, determining the safety of the power grid circuit comprises:
judging whether the power grid equipment acts correctly or not;
and under the condition that the power grid equipment acts correctly, executing the step of judging the safety of the power grid circuit by predicting the state of the power grid according to the standard running state information and the actual running state information.
4. The method according to claim 1, wherein the recovering by the grid control device according to the preset recovering method comprises:
generating an operation ticket according to the recovery method;
uploading the operation ticket to a power grid schedule, and performing control operation on the power grid by the power grid schedule according to the operation ticket.
5. A power grid control device, characterized by comprising:
the system comprises a building module, a verification module and a verification module, wherein the building module is used for building a trusted database, wherein the trusted database stores power grid defect data, corresponding defect processing modes and related standard data;
the acquisition module is used for acquiring the running state information of the power grid;
the calling module is used for calling the database to determine a power grid control method according to the running state information, wherein the power grid control method comprises a power grid running method, a power grid maintenance method or a recovery method after faults;
the control module is used for controlling the power grid according to the power grid control method;
the control module is further used for sending the power grid control method to a controller or power grid equipment, the controller controls the power grid equipment to act, or the power grid equipment directly acts so as to control a power grid circuit, and the power grid equipment at least comprises a spare power automatic switching device;
when the power grid control method is an overhaul method, the calling module is also used for acquiring a standard overhaul method from the database and overhauling according to the standard overhaul method;
in the process of executing the standard maintenance method, comparing the relevant standard information corresponding to the standard maintenance method according to the relevant information of the monitoring power grid circuit;
issuing an operation warning in case the related information exceeds a correct threshold of the related standard information;
the control module is further configured to, when the power grid control method is a power grid operation method, collect operation state information of the power grid, where the collecting includes: collecting first actual running state information of the power grid equipment;
according to the first actual running state information, the method for determining the power grid by calling the database comprises the following steps:
standard running state information of power grid equipment in the power grid under a normal running condition is obtained from the database;
judging whether the power grid equipment fails or not according to the standard running state information and the first actual running state information;
under the condition that the power grid equipment has no fault, determining that the power grid normally operates;
the first actual running state information is power supply state information of important loads in the transformer substation and comprises voltage of a bus, working state of the spare power automatic switching device and states of a breaker and a disconnecting link in a power grid related to the important loads;
when the power grid control method is a recovery method after a fault, collecting the running state information of the power grid includes: collecting second actual running state information of the power grid equipment;
according to the second actual running state information, the method for determining the power grid by calling the database comprises the following steps:
standard running state information of power grid equipment in the power grid under a normal running condition is obtained from the database;
judging whether the power grid equipment has eliminated faults according to the standard running state information and the second actual running state information;
and under the condition that the power grid equipment is eliminated, according to a preset recovery method, recovering by the power grid control equipment according to the recovery method.
6. A storage medium comprising a stored program, wherein the program, when run, controls a device in which the storage medium is located to perform the method of any one of claims 1 to 4.
7. A processor for running a program, wherein the program when run performs the method of any one of claims 1 to 4.
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| CN113341928B (en) * | 2021-06-15 | 2023-08-29 | 珠海格力电器股份有限公司 | Equipment unit fault judging method and device, storage medium and control terminal |
| CN115684822A (en) * | 2021-07-27 | 2023-02-03 | 品质控制有限责任公司 | System and method for AI-assisted grid fault analysis |
| CN113765100A (en) * | 2021-09-10 | 2021-12-07 | 国网上海市电力公司 | Power grid fault processing system and method |
| CN114094594B (en) * | 2021-11-24 | 2024-04-19 | 国网河北省电力有限公司经济技术研究院 | Hierarchical control method and device for direct current load of transformer substation and terminal equipment |
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