CN115360699A - Power grid security verification method, device, equipment and storage medium - Google Patents
Power grid security verification method, device, equipment and storage medium Download PDFInfo
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Abstract
The invention discloses a method, a device, equipment and a storage medium for checking the safety of a power grid. The power grid security verification method comprises the following steps: acquiring a power grid running state in a first time period; predicting the power grid operation state of a second time period according to the power grid operation state of a first time period, wherein the first time period is prior to the second time period; calculating a section predicted value of a second time period according to the power grid running state of the second time period; and verifying the safety of the power grid in the second time period according to the section predicted value in the second time period. The invention realizes the intelligent control of the security check of the power grid, reduces the risk of calculation errors, strengthens the real-time operation control capability of the dispatching desk on the power grid and improves the working efficiency.
Description
Technical Field
The invention relates to the field of power grid system operation management, in particular to a power grid security verification method, a power grid security verification device, power grid security verification equipment and a storage medium.
Background
Electric energy is indispensable in people's production and life, and the operation of electric wire netting safety and stability is very important to people.
However, with the enlargement of the power grid scale and the gradual complexity of the operation mode, the traditional method for manually checking the safety of the power grid can no longer adapt to the current increasingly complex power grid form, thereby increasing the risk of calculation errors, weakening the real-time operation control capability of the dispatching desk on the power grid, and reducing the working efficiency.
Disclosure of Invention
The invention provides a method, a device, equipment and a storage medium for checking the safety of a power grid, which are used for realizing the intelligent control of the safety check of the power grid, reducing the risk of calculation errors, strengthening the real-time operation control capability of a dispatching desk on the power grid and improving the working efficiency.
According to an aspect of the present invention, there is provided a power grid security verification method, including:
acquiring the power grid running state in a first time period;
predicting the power grid operation state of a second time period according to the power grid operation state of a first time period, wherein the first time period is prior to the second time period;
calculating a section prediction value of a second time period according to the power grid running state of the second time period;
and verifying the safety of the power grid in the second time period according to the section predicted value in the second time period.
According to another aspect of the present invention, there is provided a power grid security verification apparatus, including:
the operation state acquisition module is used for acquiring the operation state of the power grid in a first time period;
the operation state prediction module is used for predicting the power grid operation state of a second time period according to the power grid operation state of a first time period, wherein the first time period is prior to the second time period;
the section prediction module is used for calculating a section prediction value of a second time period according to the power grid operation state of the second time period;
and the safety verification module is used for detecting the power grid safety of the second time period according to the section predicted value of the second time period.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor, the computer program being executable by the at least one processor to enable the at least one processor to perform a method for grid security verification as described in any of the embodiments of the invention.
According to another aspect of the present invention, a computer-readable storage medium is provided, in which computer instructions are stored, and the computer instructions are configured to enable a processor to implement the power grid security verification method according to any embodiment of the present invention when executed.
According to the technical scheme of the embodiment of the invention, the power grid operation state of the second time period is predicted by acquiring the power grid operation state of the first time period, the section prediction value of the second time period is calculated according to the power grid operation state of the second time period, and the power grid safety of the second time period is verified according to the section prediction value of the second time period. The technical scheme of the implementation of the invention does not need human participation in the whole process, realizes intelligent control of the safety check of the power grid, reduces the risk of calculation errors, strengthens the real-time operation control capability of the dispatching desk on the power grid, and improves the working efficiency.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for verifying security of a power grid according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for verifying security of a power grid according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power grid security verification apparatus according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device implementing a power grid security verification method according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," or any other variation 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.
Example one
Fig. 1 is a flowchart of a power grid security verification method according to an embodiment of the present invention, where this embodiment is applicable to evaluation And calculation of a power transmission And transformation section of a power grid, and the method may be executed by a power grid security verification apparatus, and the power grid security verification apparatus may be implemented in a hardware And/or software manner, and the power grid security verification apparatus may be configured in an application system or an application platform, where the application system is, for example, a Supervisory Control And Data Acquisition (SCADA) system, and the application platform is, for example, a power transmission And transformation section prediction platform. As shown in fig. 1, the method includes:
s101, obtaining the power grid operation state in the first time period.
The first time period may be historical time, and the grid operating state of the first time period is actually acquired. Grid operating conditions include, but are not limited to: the real-time load of the generator set, the real-time load of the main transformer and the real-time load of the power transmission line. The real-time output of the generator set refers to the output power of the generator set of the power grid in the region at any moment. The main transformer real-time load refers to the transmission power of the electric quantity transmitted by a transformer in the power grid at any moment. The real-time load of the power transmission line refers to the transmission power of the power transmission quantity of the line in the power grid at any moment. Illustratively, the grid operating state for the first time period is obtained from the SCADA.
S102, predicting the power grid operation state of a second time period according to the power grid operation state of a first time period, wherein the first time period precedes the second time period.
Wherein the second time period may be a future time. The first time period precedes the second time period means that the second time period is subsequent to the first time period. Illustratively, the second time period is a time period that is subsequent and adjacent to the first time period. Predicting the power grid operation state in the second time period can be realized by taking the power grid operation condition in the first time period as a predicted value of the power grid operation state in the second time period; or a prediction model can be established by using a prediction algorithm, the power grid operation state of the first time period is used as an input quantity, and a predicted value of the power grid operation state of the second time period is obtained through data analysis and prediction. For example, the first time period may be an all-day-of-monday, and the second time period may be an all-day-of-tuesday, and the grid operating state on the day-of-monday may be used as a predicted value of the grid operating state on the day-of-tuesday. And the predicted value of the power grid operation state on the days of Tuesday can be obtained by inputting the power grid operation state on the days of Monday into the prediction model. The prediction model may include a linear regression model, a recurrent neural network model, or a BP neural network model.
And S103, calculating a section predicted value of the second time period according to the power grid operation state of the second time period.
The section is based on the N-1 principle, any element in the power system has no fault or is disconnected due to the fault, and the power grid can keep stable operation and normal power supply. The section prediction value is a power transmission and transformation load prediction value of a regional power grid. And calculating the section predicted value of the second time period by a certain power grid section calculation method according to the obtained power grid operation state of the second time period. Illustratively, the section prediction value of the second time period is calculated according to the acquired power grid operating conditions of the second time period, such as acquired load, power plant output, power plant planned output and the like, by using historical data of the power grid in the SCADA.
And S104, verifying the safety of the power grid in the second time period according to the section prediction value in the second time period.
The safety of the power grid refers to whether the power grid can continuously and stably operate when encountering an emergency. The emergency condition may be a sudden short circuit, and may be an unintended loss of a grid element. The safety of the power grid in the second time period can be verified by presetting a section limit value and comparing the acquired section predicted value in the second time period with the section limit value. If the section prediction value is less than or equal to the section limit value, the power grid section meets the power grid safety and stability constraint; if the section is larger than the section limit value, the section of the power grid in the second time period does not meet the safety and stability constraint of the power grid, and corresponding adjustment is needed to ensure the safety of the power grid. The corresponding adjustment can be the adjustment of the current power grid operation mode or the adjustment of the power plant output in advance. The section limit value is a specific value given in advance, and serves as a reference standard for comparison with the section prediction value of the second time period.
According to the technical scheme of the embodiment of the invention, under the condition of acquiring the power grid operation state of a first time period, the power grid operation state of a second time period is predicted according to the power grid operation state of the first time period, wherein the first time period is prior to the second time period; and according to the power grid running state of the second time period, the section prediction value of the second time period is calculated, so that the risk of calculation errors is reduced, the accuracy of the prediction result is improved, and the efficiency is improved. Meanwhile, the safety of the power grid in the second time period is verified according to the section predicted value in the second time period, intelligent management and control are achieved, the risk of calculation errors is reduced, the real-time operation control capacity of the dispatching desk on the power grid is enhanced, and the working efficiency is improved.
On the basis of the technical scheme, the power grid safety in the second time period is verified according to the section prediction value in the second time period, and the method specifically comprises the following steps: comparing the section predicted value in the second time period with a section limit value, wherein the section limit value is determined according to overload performance of a main transformer, a line thermal stability limit and equipment parameters; and checking the safety of the power grid in the second time period according to the comparison result.
The overload performance of the main transformer refers to the capacity of bearing the maximum load of the residual main transformer after other equipment fails; the line thermal stability limit means that after other equipment fails, the line does not exceed the thermal stability limit in the rest operation; the equipment parameter refers to the property of the equipment in the power grid, for example, the maximum sustainable current value of the wire.
The comparison result refers to the comparison result of the size of the section prediction value in the second time period and the section limit value. For example, the section predicted value in the second time period is less than or equal to the section limit value, which indicates that the power grid meets the safe and stable operation condition; otherwise, the grid has safety risks, such as severe overload of the transformer after an accident trip.
For example, if a certain substation has 4 main transformers, the main transformer capacity is 240MW, the overload capacity of the main transformers is 1.2 times of the rated value, and the power factor is 0.95, the section limit value of the 4 main transformers is
(4-1)×240×1.2×0.95＝820.8MW。
For another example, a double-circuit transmission line section is generally controlled according to its single-circuit maximum transmission capacity (considering a fault in one circuit, the other circuit can ensure that its current limiting value is not exceeded). Assuming that the limit value of a single-circuit transmission line of a certain double-circuit 220kV transmission line is 1400A, and the power factor is 0.95, the limit value of the section of the double-circuit transmission line is
According to the embodiment, the safety of the power grid in the second time period is verified according to the comparison result of the section predicted value and the section limit value in the second time period, and the safety of the power grid is improved.
On the basis of the technical scheme, the process of predicting the power grid operation state in the second time period according to the power grid operation state in the first time period is supplemented, and specifically: the load influence information of the power grid in the first time period corresponds to the load influence information of the power grid in the second time period; the load impact information includes at least one of: weather information and holiday information.
For example, considering that factors such as weather and holidays have obvious influence on the power grid load, when the power grid load of the first time period is used for predicting the power grid load of the second time period, the influence of external factors including the weather factor and the holiday factor can be considered. The weather factors may include temperature, humidity, wind speed, and the like; holidays can include double break, single break, and national statutory holidays. For example, in general, the work and business load during a weekday is generally higher than the work and business load on weekends, with the load variation between the two being significantly different.
According to the embodiment, the influence of the load influence information of the power grid on the running state of the power grid is considered, the accuracy of predicting the running state of the power grid in the second time period according to the running state of the power grid in the first time period is improved, and the uncertainty of the second time period is reduced.
On the basis of the above technical solution, after verifying the security of the power grid in the second time period, the method further includes: and adjusting the operation mode or the planned output of the power plant in the second time period according to the safety detection result.
The safety detection result may include a grid safety risk assessment. After the safety of the power grid in the second time period is verified, the operation mode or the planned output of the power plant in the second time period is adjusted, so that the safety risk is avoided, the real-time operation control capability of the dispatching desk on the power grid is strengthened, and the working efficiency is improved.
Example two
Fig. 2 is a flowchart of a method for checking security of a power grid according to a second embodiment of the present invention, where this embodiment calculates a predicted section value in a second time period according to a power grid operating state in the second time period on the basis of the above embodiment, and specifically includes: and determining the section prediction value of the second time period according to the predicted load of the second time period, the predicted output of the power plant of the second time period and the planned output of the power plant of the second time period. As shown in fig. 2, the method includes:
s201, obtaining the power grid operation state in the first time period.
S202, predicting the power grid operation state of a second time period according to the power grid operation state of the first time period, wherein the first time period precedes the second time period.
S203, determining a section prediction value of the second time period according to the predicted load of the second time period, the predicted output of the power plant of the second time period and the planned output of the power plant of the second time period.
The planned output of the power plant refers to a power generation plan of a second time period which is made in advance for ensuring the balance of the supply and the demand of the power grid in the second time period by superior scheduling, for example, a power generation plan of the next day which is made in advance for ensuring the balance of the supply and the demand of the power grid in the next day by superior scheduling. Illustratively, the predicted load of the second time period and the predicted output of the power plant in the second time period are summed, and then the planned output of the power plant in the second time period is subtracted from the maximum value of the sum of the predicted load and the predicted output of the power plant in the second time period to obtain the predicted section value of the second time period.
And S204, verifying the safety of the power grid in the second time period according to the section prediction value in the second time period.
The optimization of the operation of calculating the section prediction value in the second time period improves the calculation accuracy, reduces the risk of calculation errors, strengthens the real-time operation control capability of the dispatching desk on the power grid, and improves the working efficiency.
On the basis of the technical scheme, the section prediction value of the second time period is determined according to the prediction load of the second time period, the power plant prediction output of the second time period and the power plant planned output of the second time period, and the method specifically comprises the following steps: determining an actual load curve of the second time period according to the predicted load curve of the second time period and the predicted power output curve of the power plant of the second time period; acquiring the maximum value of the actual load curve of the second time period; and calculating the difference between the maximum value of the actual load curve in the second time period and the planned output of the power plant in the second time period to obtain the section predicted value in the second time period.
For example, the predicted load curve of the second time period and the predicted power plant output curve of the second time period may be merged to obtain an actual load curve of the second time period, a maximum value of the actual load curve of the second time period may be found out from the actual load curve of the second time period, and the planned power plant output of the second time period may be subtracted from the maximum value to obtain a predicted section value of the second time period.
On the basis of the technical scheme, the predicted load and the predicted section value in the second time period are detailed as follows: the predicted load comprises a main transformer load and a line load; the section prediction value comprises a main transformer section prediction value and a line section prediction value. Correspondingly, the section limit value comprises a main transformer section limit value and a line section limit value.
Illustratively, determining the actual load curve for the second time period based on the predicted load curve for the second time period and the predicted power plant output curve for the second time period includes: determining a main transformer actual load curve in a second time period according to the main transformer load curve in the second time period and the power plant predicted output curve in the second time period; and determining the actual load curve of the line in the second time period according to the line load curve in the second time period and the predicted output curve of the power plant in the second time period.
Illustratively, obtaining the maximum value of the actual load curve for the second time period includes: acquiring the maximum value of the actual load curve of the main transformer in the second time period; and acquiring the maximum value of the actual load curve of the line in the second time period.
Exemplarily, calculating a difference between the maximum value of the actual load curve in the second time period and the planned output of the power plant in the second time period to obtain a predicted section value in the second time period, and the calculating includes: calculating the difference value between the maximum value of the actual load curve of the main transformer in the second time period and the planned output of the power plant in the second time period to obtain the predicted value of the section of the main transformer in the second time period; and calculating the difference value between the maximum value of the actual load curve of the line in the second time period and the planned output of the power plant in the second time period to obtain the predicted value of the line section in the second time period. Specifically, assume that the main-variable load curve in the second time period is
The predicted power curve of the power plant in the second time period is
The planned output of the power plant in the second time period is
The predicted value of the main transformer section in the second time period is L sub Then the actual load curve of the main transformer in the second time period is
Having a maximum value of
Calculating the difference value between the maximum value and the planned output of the power plant in the second time period to obtain a main transformer section predicted value in the second time period, namely
Specifically, assume that the line load curve for the second time period is
The predicted output curve of the power plant in the second time period is
The planned output of the power plant in the second time period is
The predicted value of the line section in the second time period is L line Then the line actual load curve for the second time period is
Having a maximum value of
Calculating the difference value between the maximum value and the planned output of the power plant in the second time period to obtain the predicted value of the line section in the second time period, namely
Illustratively, assume that the main transformer section limit is S sub Line sectionLimit value of S line . The main transformer section limit value and the line section limit value are mainly determined according to main transformer overload performance, line thermal stability limit and equipment parameters.
The predicted value of the main transformer section in the second time period is L sub And the predicted value of the line section in the second time period is L line . When L is sub ≤S sub And L is line ≤S line When the power station is in the normal state, the planned output of the power plant meets the load balance requirement of the power grid in the second time period; otherwise, the planned output of the power plant does not meet the load balance requirement of the power grid in the second time period, and the operation mode of the power grid or the planned output of the power plant needs to be manually adjusted in advance.
According to the technical scheme, the load and the section prediction value in the second time period are further refined, the risk of calculation errors is reduced, the real-time operation control capacity of the dispatching desk on the power grid is enhanced, and the working efficiency is improved.
EXAMPLE III
Fig. 3 is a schematic structural diagram of a device for checking security of a power grid according to a third embodiment of the present invention. As shown in fig. 3, the apparatus includes:
the operation state obtaining module 301 is configured to obtain a power grid operation state of a first time period.
The operation state prediction module 302 is configured to predict a grid operation state of a second time period according to a grid operation state of a first time period, where the first time period precedes the second time period.
And the section prediction module 303 is configured to calculate a section prediction value in the second time period according to the power grid operating state in the second time period.
And the safety verification module 304 is configured to detect the power grid safety in the second time period according to the section prediction value in the second time period.
According to the technical scheme of the embodiment of the invention, under the condition of acquiring the power grid operation state of a first time period, the power grid operation state of a second time period is predicted according to the power grid operation state of the first time period, wherein the first time period is prior to the second time period; and according to the power grid running state of the second time period, the section prediction value of the second time period is calculated, so that the risk of calculation errors is reduced, the accuracy of the prediction result is improved, and the efficiency is improved. Meanwhile, the safety of the power grid in the second time period is verified according to the section predicted value in the second time period, intelligent management and control are achieved, the risk of calculation errors is reduced, the real-time operation control capability of the dispatching desk on the power grid is strengthened, and the working efficiency is improved.
Further, the section predicting module 303 includes:
and the section prediction unit is used for determining a section prediction value of the second time period according to the predicted load of the second time period, the predicted output of the power plant of the second time period and the planned output of the power plant of the second time period.
Further, the section prediction unit includes:
the actual load curve determining subunit is used for determining an actual load curve of the second time period according to the predicted load curve of the second time period and the predicted output curve of the power plant of the second time period;
a maximum value acquisition subunit, configured to acquire a maximum value of the actual load curve of the second time period;
and the section prediction subunit is used for calculating the difference between the maximum value of the actual load curve in the second time period and the planned output of the power plant in the second time period to obtain a section prediction value in the second time period.
Further, the predicted load comprises a main transformer load and a line load; the section prediction value comprises a main transformer section prediction value and a line section prediction value.
Further, the security check module 304 includes:
the result comparison unit is used for comparing the section predicted value in the second time period with a section limit value, and the section limit value is determined according to the overload performance of the main transformer, the thermal stability limit of the line and the equipment parameters;
and the safety verification unit is used for verifying the safety of the power grid in the second time period according to the comparison result.
Further, the load influence information of the power grid in the first time period corresponds to the load influence information of the power grid in the second time period; the load impact information includes at least one of: weather information and holiday information.
Further, electric wire netting security verifying attachment still includes:
and the operation mode or planned power plant output adjusting module is used for adjusting the operation mode or planned power plant output in the second time period according to the safety detection result after the safety of the power grid in the second time period is verified.
The power grid security verification device provided by the embodiment of the invention can execute the power grid security verification method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
Example four
FIG. 4 shows a schematic block diagram of an electronic device 400 that may be used to implement embodiments of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smart phones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 4, the electronic device 400 includes at least one processor 401, and a memory communicatively connected to the at least one processor 401, such as a Read Only Memory (ROM) 402, a Random Access Memory (RAM) 403, and the like, wherein the memory stores computer programs executable by the at least one processor, and the processor 401 may perform various suitable actions and processes according to the computer programs stored in the Read Only Memory (ROM) 402 or the computer programs loaded from a storage unit 408 into the Random Access Memory (RAM) 403. In the RAM403, various programs and data required for the operation of the electronic device 400 can also be stored. The processor 401, ROM402 and RAM403 are connected to each other by a bus 404. An input/output (I/O) interface 405 is also connected to bus 404.
A number of components in the electronic device 400 are connected to the I/O interface 405, including: an input unit 406 such as a keyboard, a mouse, or the like; an output unit 407 such as various types of displays, speakers, and the like; a storage unit 408, such as a magnetic disk, optical disk, or the like; and a communication unit 409 such as a network card, modem, wireless communication transceiver, etc. The communication unit 409 allows the electronic device 400 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
In some embodiments, a power grid security verification method may be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 408. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 400 via the ROM402 and/or the communication unit 409. When loaded into RAM403 and executed by processor 401, may perform one or more of the steps of a method for grid security verification as described above. Alternatively, in other embodiments, processor 401 may be configured to perform a power grid security verification method by any other suitable means (e.g., by way of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), system on a chip (SOCs), complex Programmable Logic Devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. A computer program can execute entirely on a machine, partly on a machine, as a stand-alone software package partly on a machine and partly on a remote machine or entirely on a remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the Internet.
The computing system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The Server can be a cloud Server, also called a cloud computing Server or a cloud host, is a host product in a cloud computing service system, and solves the defects of high management difficulty and weak service expansibility in the traditional physical host and VPS (Virtual Private Server) service.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A power grid security verification method is characterized by comprising the following steps:
acquiring a power grid running state in a first time period;
predicting the power grid operation state of a second time period according to the power grid operation state of the first time period, wherein the first time period is prior to the second time period;
calculating a section predicted value of the second time period according to the power grid operation state of the second time period;
and verifying the safety of the power grid in the second time period according to the section predicted value in the second time period.
2. The method according to claim 1, wherein calculating the predicted section value of the second time period according to the grid operation state of the second time period comprises:
and determining the predicted section value of the second time period according to the predicted load of the second time period, the predicted output of the power plant of the second time period and the planned output of the power plant of the second time period.
3. The method of claim 2, wherein determining the predicted profile value for the second time period based on the predicted load for the second time period, the predicted power plant output for the second time period, and the planned power plant output for the second time period comprises:
determining an actual load curve of the second time period according to the predicted load curve of the second time period and the predicted power output curve of the power plant of the second time period;
acquiring the maximum value of the actual load curve of the second time period;
and calculating the difference between the maximum value of the actual load curve in the second time period and the planned output of the power plant in the second time period to obtain the predicted value of the section in the second time period.
4. The method of claim 2, wherein the predicted loads comprise a main transformer load and a line load; the section prediction value comprises a main transformer section prediction value and a line section prediction value.
5. The method according to claim 1, wherein verifying the safety of the power grid for the second time period according to the predicted section value for the second time period comprises:
comparing the section predicted value in the second time period with a section limit value, wherein the section limit value is determined according to the overload performance of the main transformer, the thermal stability limit of the line and the equipment parameters;
and checking the safety of the power grid in the second time period according to the comparison result.
6. The method according to claim 1, wherein the load influence information of the power grid in the first time period corresponds to the load influence information of the power grid in the second time period; the load impact information comprises at least one of: weather information and holiday information.
7. The method of claim 1, further comprising, after verifying the security of the power grid for the second period of time:
and adjusting the operation mode or the planned output of the power plant in the second time period according to the safety detection result.
8. The utility model provides a power grid security verifying attachment which characterized in that includes:
the operation state acquisition module is used for acquiring the operation state of the power grid in a first time period;
the operation state prediction module is used for predicting the power grid operation state of a second time period according to the power grid operation state of the first time period, wherein the first time period is prior to the second time period;
the section prediction module is used for calculating a section prediction value of the second time period according to the power grid operation state of the second time period;
and the safety verification module is used for detecting the power grid safety of the second time period according to the section prediction value of the second time period.
9. An electronic device, characterized in that the electronic device comprises:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the power grid security check method of any of claims 1-7.
10. A computer-readable storage medium storing computer instructions for causing a processor to implement the power grid security verification method of any one of claims 1-9 when executed.
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