CN113011004B - Security check method, device and storage medium - Google Patents
Security check method, device and storage medium Download PDFInfo
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- CN113011004B CN113011004B CN202110208782.8A CN202110208782A CN113011004B CN 113011004 B CN113011004 B CN 113011004B CN 202110208782 A CN202110208782 A CN 202110208782A CN 113011004 B CN113011004 B CN 113011004B
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- 230000005283 ground state Effects 0.000 claims abstract description 52
- 238000004364 calculation method Methods 0.000 claims description 154
- 238000012545 processing Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 17
- 238000004590 computer program Methods 0.000 description 7
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
Abstract
The embodiment of the invention discloses a security check method, a device and a storage medium, wherein the method comprises the following steps: establishing a power supply system model, and determining a high-voltage transformer coil which is positioned at an alternating current-direct current boundary and is contained in an alternating current power supply system in the power supply system model as a bus traction load; collecting load data of bus traction load at different moments and initial data of other equipment different from the bus traction load in an alternating current power supply system; generating a bus traction load curve corresponding to the ground state section and the bus traction load based on the load data and the initial data; and carrying out power flow safety check aiming at a target power supply scheme on the alternating current power supply system based on the ground state section and the bus traction load curve.
Description
Technical Field
The embodiment of the invention relates to the technical field of subway power monitoring, in particular to a safety check method, a safety check device and a storage medium.
Background
Subway power monitoring systems (Power Supervisory Control And Data Acquisition, pscadi) have been applied to various control centers of urban rail transit, with pscadi being capable of performing the function of monitoring control.
The safety evaluation of the power supply scheme requires train load data as a basis, and power flow calculation is carried out on the power supply system according to the train load data, so that whether the power supply scheme meets the safety power supply condition is judged according to the power flow calculation result. In the prior art, the train load data is mainly simulated through traction calculation or load estimation, real-time data cannot be acquired, and PSCADA is a real-time operation system, so that the simulated train load data is used as actual acquired data to perform load flow calculation, mismatching with the actual operation data can be caused, and the load flow safety check function of a power supply system cannot be achieved.
Disclosure of Invention
In order to solve the technical problems, the embodiment of the invention is expected to provide a safety check method, a device and a storage medium, wherein a high-voltage transformer coil positioned at an alternating current-direct current boundary in a power supply system model is determined as a bus traction load, so that load data of the bus traction load and load data of a train are calculated to perform tide calculation, real-time acquisition of data is realized, and safety check of a power supply system is realized by using PSCADA.
The embodiment of the invention provides a security check method, which comprises the following steps:
Establishing a power supply system model, and determining a high-voltage transformer coil which is positioned at an alternating current-direct current boundary and is contained in an alternating current power supply system in the power supply system model as a bus traction load;
collecting load data of the bus traction load at different moments and initial data of other equipment which is different from the bus traction load in the alternating current power supply system;
generating a bus traction load curve corresponding to the ground state section and the bus traction load based on the load data and the initial data;
and carrying out power flow safety check aiming at a target power supply scheme on the alternating current power supply system based on the ground state section and the bus traction load curve.
In the above method, the collecting the load data of the bus traction load at different time and the initial data of other devices different from the bus traction load in the ac power supply system includes:
acquiring data information corresponding to the starting moment of the other equipment in a preset time period to obtain the initial data;
and in the preset time period, acquiring data information of the bus traction load once every interval preset time period, and determining the acquired data information as the load data.
In the above method, generating a bus traction load curve corresponding to the ground state section and the bus traction load based on the load data and the initial data includes:
the data information acquired at the initial moment in the load data and the initial data form the ground state section;
correspondingly writing the load data into a preset busbar traction load curve table according to data attributes and data acquisition time to obtain a target busbar traction load curve table;
and generating the bus traction load curve by using the target bus traction load curve table.
In the above method, the performing, based on the ground state section and the bus traction load curve, a power flow safety check for a target power supply scheme on the ac power supply system includes:
based on the ground state section, configuring the alternating current power supply system, and carrying out power supply adjustment on the alternating current power supply system according to a preset power supply adjustment mode so as to enable the alternating current power supply system to execute the target power supply scheme;
carrying out load flow calculation on the target power supply scheme according to the bus traction load curve, and writing a load flow calculation result into a preset load flow calculation result curve table to obtain a target load flow calculation result curve table, wherein the target load flow calculation result curve table comprises a load flow calculation result curve table of key equipment, and the key equipment is main equipment for influencing the safety of an alternating current power supply system;
And carrying out power flow safety check on the alternating current power supply system according to the target power flow calculation result curve table.
In the above method, the step of performing load flow calculation on the target power supply scheme according to the bus traction load curve, and writing a result of the load flow calculation into a preset load flow calculation result curve table to obtain a target load flow calculation result curve table, includes:
carrying out power flow calculation at different moments on the target power supply scheme by utilizing data information at different moments in the bus traction load curve to obtain power flow calculation results corresponding to different moments;
writing the power flow calculation result into the preset power flow calculation result curve table to obtain the target power flow calculation result curve table.
In the above method, the performing power flow safety check on the ac power supply system according to the target power flow calculation result curve table includes:
respectively taking out different power flow calculation results of the key equipment from the target power flow calculation result curve table, and comparing the power flow calculation results with corresponding preset values to obtain comparison results of the key equipment;
and judging the safety of the target power supply scheme based on the comparison result.
In the above method, generating a bus traction load curve corresponding to the ground state section and the bus traction load based on the load data and the initial data includes:
generating the ground state section based on the load data and the initial data;
generating a traction load curve to be adjusted based on the load data;
and determining the bus traction load curve based on the traction load curve to be adjusted.
In the above method, the determining, based on the bus traction load curve to be adjusted, a bus traction load curve corresponding to the bus traction load includes:
determining the bus traction load curve to be adjusted as the bus traction load curve;
or, the bus traction load curve to be adjusted is adjusted, and the adjusted bus traction load curve is determined to be the bus traction load curve.
The embodiment of the invention provides a safety checking device, which comprises:
the system comprises a building module, a control module and a control module, wherein the building module is used for building a power supply system model and determining a high-voltage transformer coil which is positioned at an alternating current-direct current boundary and is contained in an alternating current power supply system in the power supply system model as a bus traction load;
The acquisition module is used for acquiring load data of the bus traction load at different moments and initial data of other equipment which is different from the bus traction load in the alternating current power supply system;
the generating module is used for generating a bus traction load curve corresponding to the ground state section and the bus traction load based on the load data and the initial data;
and the processing module is used for carrying out tide safety check aiming at a target power supply scheme on the alternating current power supply system based on the ground state section and the bus traction load curve.
In the above device, the collecting module is specifically configured to collect data information corresponding to the starting time of the other device in the preset time period, so as to obtain the initial data;
and in the preset time period, acquiring data information of the bus traction load once every interval preset time period, and determining the acquired data information as the load data.
In the above device, the generating module is specifically configured to combine the data information collected at the starting time in the load data with the initial data to form the ground state section;
correspondingly writing the load data into a preset busbar traction load curve table according to data attributes and data acquisition time to obtain a target busbar traction load curve table;
And generating the bus traction load curve by using the target bus traction load curve table.
In the above device, the processing module is specifically configured to configure the ac power supply system based on the ground state section, and perform power supply adjustment on the ac power supply system according to a preset power supply adjustment manner, so that the ac power supply system executes the target power supply scheme;
carrying out load flow calculation on the target power supply scheme according to the bus traction load curve, and writing the result of the load flow calculation into a preset load flow calculation result curve table to obtain a target load flow calculation result curve table, wherein the target load flow calculation result curve table comprises load flow calculation result curve tables of key equipment, and the key equipment is main equipment affecting the safety of an alternating current power supply system;
and carrying out power flow safety check on the alternating current power supply system according to the target power flow calculation result curve table.
In the above device, the processing module is specifically configured to perform power flow calculation at different times on the target power supply scheme by using data information at different times in the busbar traction load curve, so as to obtain power flow calculation results corresponding to different times;
Writing the power flow calculation result into the preset power flow calculation result curve table to obtain the target power flow calculation result curve table.
In the above device, the processing module is specifically configured to respectively take out different power flow calculation results of the key device from the target power flow calculation result curve table, and compare the power flow calculation results with a corresponding preset value to obtain a comparison result of the key device;
and judging the safety of the target power supply scheme based on the comparison result.
In the above device, the generating module is specifically configured to generate the ground state section based on the load data and the initial data;
generating a traction load curve to be adjusted based on the load data; and determining the bus traction load curve based on the traction load curve to be adjusted.
In the above device, the generating module is specifically configured to determine the bus traction load curve to be adjusted as the bus traction load curve;
or, the bus traction load curve to be adjusted is adjusted, and the adjusted bus traction load curve is determined to be the bus traction load curve.
The embodiment of the invention provides a safety checking device, which comprises: a processor, a memory, and a communication bus;
the communication bus is used for realizing communication connection between the processor and the memory;
the processor is configured to execute the security check program stored in the memory, so as to implement the security check method.
Embodiments of the present invention provide a computer-readable storage medium storing one or more programs executable by one or more processors to implement the above-described security check method.
The embodiment of the invention provides a security check method, a security check device and a storage medium, wherein the security check method comprises the following steps: establishing a power supply system model, and determining a high-voltage transformer coil which is positioned at an alternating current-direct current boundary and is contained in an alternating current power supply system in the power supply system model as a bus traction load; collecting load data of bus traction load at different moments and initial data of other equipment different from the bus traction load in an alternating current power supply system; generating a bus traction load curve corresponding to the ground state section and the bus traction load based on the load data and the initial data; and carrying out power flow safety check aiming at a target power supply scheme on the alternating current power supply system based on the ground state section and the bus traction load curve. According to the safety check method provided by the embodiment of the invention, the high-voltage transformer coil positioned at the AC/DC boundary in the power supply system model is determined as the bus traction load, so that load data of the bus traction load and the like are calculated to perform load flow calculation, the real-time acquisition of the data is realized, and the safety check of the power supply system can be realized by using PSCADA.
Drawings
Fig. 1 is a schematic flow chart of a security check method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an exemplary power supply system model according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an exemplary power supply system after the train traction load and the bus traction load are equivalent;
FIG. 4 is a schematic modeling diagram of an exemplary bus traction load curve and a key device tide calculation result curve according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a security check device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a safety checking device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
The embodiment of the invention discloses a safety check method. Fig. 1 is a schematic flow chart of a security check method according to an embodiment of the present invention. As shown in fig. 1, the method mainly comprises the following steps:
S101, a power supply system model is built, and a high-voltage transformer coil which is positioned at an alternating current-direct current boundary and included in an alternating current power supply system in the power supply system model is determined to be a bus traction load.
In the embodiment of the invention, the safety checking device can establish a power supply system model and determine a high-voltage transformer coil which is positioned at an alternating current-direct current boundary in the power supply system model and is contained in an alternating current power supply system as a bus traction load.
It should be noted that, in the embodiment of the present invention, the power supply system model established in the pscadi by the security check device is a power supply system model conforming to the IEC-61970 standard, and the power supply system is used for describing basic attributes and connection relationships of various devices in the power supply system. The specific power supply system model can be set according to actual application scenes and requirements, and the embodiment of the invention is not limited.
Fig. 2 is a schematic structural diagram of an exemplary power supply system model according to an embodiment of the present invention. As shown in fig. 2, the dashed line is an ac power supply system at the ac/dc boundary of the power supply system, the dc power supply system is arranged below the dashed line, and the trains 1 to 8 are simulated train distribution, and the train distribution and the train load cannot be collected in the pscadia system, so that the load flow calculation cannot be directly performed by using the train load, but the data information such as active power, reactive power, voltage, current and the like can be directly collected by the high-voltage transformer rolls of the rectifier transformers 1 to 2 and the inverter feedback transformers 1 to 2 at the dashed line, so that the safety checking device determines the high-voltage transformer rolls which are positioned at the ac/dc boundary of the power supply system model and are included in the ac power supply system as bus traction load, and performs the load flow calculation by using the load data of the bus traction load instead of the train traction load data, thereby not only realizing the real-time collection of the data in the pscadia system, but also realizing the safety checking of the power flow calculation.
Fig. 3 is a schematic diagram of an exemplary power supply system after the train traction load and the bus traction load are equivalent. As shown in fig. 3, the train load of the dc power supply system such as the bus bar traction load 1, the bus bar traction load 2, the bus bar traction load 3, and the bus bar traction load 4 is set such that the collection values of the bus bar traction loads 1 to 4 are the collection values of the high voltage transformer rolls of the rectifier transformers 1 to 2 and the inverter feedback transformers 1 to 2, so that the train load in the power supply system can be represented by the bus bar traction loads 1 to 4, and the load flow calculation of the power supply system is provided with the base load data.
S102, collecting load data of bus traction load at different moments and initial data of other equipment different from the bus traction load in the alternating current power supply system.
In the embodiment of the invention, after the bus traction load is determined, the safety checking device can directly collect the load data of the bus traction load at different moments and the initial data of other equipment different from the bus traction load in the alternating current power supply system as the basic data of the power flow calculation.
Specifically, in the embodiment of the present invention, the safety check device collects load data of a bus traction load at different moments, and initial data of other devices different from the bus traction load in the ac power supply system, including: acquiring data information corresponding to the starting moment of other equipment in a preset time period to obtain initial data; and in a preset time period, acquiring data information of the traction load of the bus once every interval for a preset time period, and determining the acquired data information as load data.
It should be noted that, in the embodiment of the present invention, the preset time period may be a peak time period, or may be a certain time period set by a technician, and specifically, the preset time period may be set according to an actual requirement and an application scenario.
In the embodiment of the invention, the safety checking device determines the acquired data information of other devices in the ac system at the starting moment as initial data, where the initial data includes the state of a switch in the ac system, the bus voltage, the active power reactive power of the ac line, the active power reactive power of the load, the active power reactive power of the transformer, and the like, and can restore the device states of the other devices in the ac system at the starting moment.
It should be noted that, in the embodiment of the present invention, the safety checking device collects data information of the bus traction load once in a preset time period at intervals of preset time length, and determines the collected data information as load data, where the interval preset time length may be a frequency of collecting data by the safety checking device or a time interval set by a technician, and specifically, the interval preset time length may be set according to an actual requirement and an application scenario.
In the embodiment of the invention, the data information of the bus traction load collected by the safety checking device comprises information such as active power, reactive power, voltage, current and the like of the bus traction load, and the data information is used for restoring the load state of the bus traction load at intervals of a preset duration in a preset time period.
And S103, generating a bus traction load curve corresponding to the ground state section and the bus traction load based on the load data and the initial data.
In the embodiment of the invention, the safety checking device can generate the bus traction load curve corresponding to the ground state section and the bus traction load based on the load data and the initial data.
Specifically, in an embodiment of the present invention, a safety check device generates a busbar traction load curve corresponding to a ground state section and a busbar traction load based on load data and initial data, including: data information acquired at the initial moment in the load data and the initial data form a ground state section; correspondingly writing the load data into a preset busbar traction load curve table according to the data attribute and the data acquisition time to obtain a target busbar traction load curve table; generating a bus traction load curve by using the target bus traction load curve table.
In the embodiment of the present invention, the ground state section is composed of load data of the bus traction load collected at the start time of the preset time period and initial data of other devices except the bus traction load at the start time in the ac system, and the ground state section can restore the power supply scheme of the ac system at the start time of the preset time period.
In the embodiment of the invention, the safety checking device acquires load data at different moments, correspondingly writes the load data into a preset bus traction load curve table according to data attributes and data acquisition moments to obtain a target bus traction load curve table, wherein the data attributes refer to basic attributes such as active power, reactive power, voltage, current and the like of bus traction load, the data acquisition moments refer to a plurality of data acquisition moments determined according to preset intervals in a preset time period, and the preset bus traction load curve table is an empty table which is built during power supply system model building and is not used for storing data information.
Fig. 4 is a schematic modeling diagram of an exemplary bus traction load curve and a key device tide calculation result curve according to an embodiment of the present invention. As shown in fig. 4, the bus bar traction load and the high-voltage transformer coil are in one-to-one relation, and a corresponding relation is established between the bus bar traction load 1 to the bus bar traction load 4 by the equipment code (ID) of the high-voltage transformer coil.
As can be seen from fig. 2, for example, the busbar traction load 1 corresponds to the high-voltage transformer winding of the rectifier transformer 1, the busbar traction load 2 corresponds to the inverter feedback transformer 1, the busbar traction load 3 corresponds to the high-voltage transformer winding of the rectifier transformer 2, and the busbar traction load 4 corresponds to the inverter feedback transformer 2.
It should be noted that, in the embodiment of the present invention, a preset busbar traction load curve table is established in the pscadi, and a corresponding relationship is established with the busbar traction load, that is, the busbar traction load 1 to the busbar traction load 4 each correspond to a preset busbar traction load curve table, and a storage position of data information is reserved in each preset busbar traction load curve table, for example: basic attributes such as bus traction load codes (ID), point numbers, active power, reactive power, voltage, current and the like, and the bus traction load and data information to be stored in a preset bus traction load curve table are in one-to-many correspondence.
The safety checking device performs multiple data acquisition on the bus traction load 1 to obtain multiple groups of data information, and a space for storing the multiple groups of data information is reserved in a preset bus traction load curve table.
The safety checking device acquires load data at the starting moment, judges the data attribute, and if the load data is active of the bus traction load, correspondingly writes the active position of the starting moment in the preset bus traction load curve table until the load data acquired at different moments are completely written in the preset bus traction load curve table, so as to acquire the target bus traction load curve table.
In the embodiment of the present invention, the safety check device can generate a bus traction load curve according to the obtained target bus traction load curve table, where the bus traction load curve represents the change of each data of the bus traction load at different times.
For example, when the safety check device determines a point representing the starting moment in the bus traction load curve, all data information of the bus traction load at the starting moment can be correspondingly obtained.
Specifically, in an embodiment of the present invention, a safety check device generates a busbar traction load curve corresponding to a ground state section and a busbar traction load based on load data and initial data, including: generating a ground state section based on the load data and the initial data; generating a traction load curve to be adjusted based on the load data; and determining a bus traction load curve based on the traction load curve to be adjusted.
In the embodiment of the present invention, the safety check device may generate a ground state section according to the load data at the starting time and the initial data, and generate a traction load curve to be adjusted according to the load data of the bus traction load at different times, where the traction load curve to be adjusted is generated based on the load data directly acquired at different times, and is not subjected to data processing.
Specifically, in an embodiment of the present invention, the safety check device determines a bus traction load curve corresponding to a bus traction load based on a bus traction load curve to be adjusted, including: determining a bus traction load curve to be adjusted as a bus traction load curve; or, the bus traction load curve to be adjusted is adjusted, and the adjusted bus traction load curve is determined as the bus traction load curve.
In the embodiment of the invention, the safety checking device can directly determine the bus traction load curve to be adjusted as the bus traction load curve, and can also perform data processing on the bus traction load curve to be adjusted to obtain the bus traction load curve, and the determination of the specific bus traction load curve can be determined according to actual requirements and application scenes.
The safety checking device can adjust the bus traction load according to a certain coefficient on the basis of the bus traction load curve to be adjusted, so that an adjusted bus traction load curve is obtained, the adjusted bus traction load curve is determined to be the bus traction load curve to carry out load flow calculation, and the specific adjustment mode of the bus traction load curve can be set according to actual application scenes and requirements.
S104, carrying out power flow safety check aiming at a target power supply scheme on the alternating current power supply system based on the ground state section and the bus traction load curve.
In the embodiment of the invention, the safety checking device performs tide safety check aiming at a target power supply scheme on the alternating current power supply system based on the ground state section and the bus traction load curve.
In the embodiment of the present invention, the target power supply scheme may be a power supply scheme for restoring the ground state section to the ac system, or may be a power supply scheme after adjusting the power supply scheme of the ac system based on the ground state section, and the specific target power supply scheme may be determined according to actual requirements and application scenarios.
Specifically, in the embodiment of the present invention, the safety check device performs, based on a ground state section and a bus traction load curve, power flow safety check for a target power supply scheme on an ac power supply system, including: based on the ground state section, configuring an alternating current power supply system, and carrying out power supply adjustment on the alternating current power supply system according to a preset power supply adjustment mode so as to enable the alternating current power supply system to execute a target power supply scheme; according to a bus traction load curve, carrying out load flow calculation on a target power supply scheme, and writing a load flow calculation result into a preset load flow calculation result curve table to obtain a target load flow calculation result curve table, wherein the target load flow calculation result curve table comprises load flow calculation result curve tables of key equipment, and the key equipment is main equipment affecting the safety of an alternating current power supply system; and carrying out power flow safety check on the alternating current power supply system according to the target power flow calculation result curve table.
In the embodiment of the present invention, the safety check device needs to load the ground state section into the power supply system model, configure the ac power supply system, and obtain the configured ac power supply system.
It should be noted that, in the embodiment of the present invention, the safety check device performs power supply adjustment on the ac power supply system according to a preset power supply adjustment manner on the basis of the configured ac power supply system, so that the ac power supply system executes the target power supply scheme, and the preset power supply adjustment manner may be to obtain the target power supply scheme by adjusting the on-off state of the switch knife switch capable of controlling the power supply manner in the ac power supply system.
As shown in fig. 3, the safety checking device may adjust the power supply of the ac power supply system by adjusting the on/off state of the switch knife switch capable of controlling the power supply mode, for example, under normal conditions, the switches 2 to 5 are all closed, the switches 1 and 6 are open, if the main transformer 1 fails, the switches 2 and 4 in fig. 3 need to be opened, and the switch 6 is closed, so that the target power supply scheme for supplying power only by the main transformer 2 can be obtained.
In the embodiment of the present invention, the switches 7 to 14 are normally closed.
It should be noted that, in the embodiment of the present invention, after determining the target power supply scheme, the safety checking device performs, according to the bus traction load curve, load flow calculation on a key device in other devices, where the key device is a main device affecting safety of the ac power supply system, for example: a transformer, a bus, or an ac line.
It should be further noted that, in the embodiment of the present invention, after the safety check device performs the power flow calculation on the target power supply scheme, the result of the power flow calculation is written into the preset power flow calculation result curve table corresponding to the key device, so as to obtain the target power flow calculation result curve table, where the power flow calculation results of the key devices at different moments are stored in the target power flow calculation result curve table.
Specifically, in an embodiment of the present invention, a safety check device performs load flow calculation on a target power supply scheme according to a busbar traction load curve, and writes a result of the load flow calculation into a preset load flow calculation result curve table to obtain a target load flow calculation result curve table, including: carrying out power flow calculation at different moments on a target power supply scheme by utilizing data information at different moments in a bus traction load curve to obtain corresponding power flow calculation results at different moments; and correspondingly writing the corresponding power flow calculation results at different moments into a preset power flow calculation result curve table according to the data attribute to obtain a target power flow calculation result curve table.
In the embodiment of the invention, the bus traction load curve corresponds to data information of different moments, the different moments are different moments determined at intervals of preset time periods in a preset time period, and the number of the moments corresponding to the different moments is the number of times of carrying out power flow calculation by key equipment in the safety check process.
In the embodiment of the present invention, the bus traction load curve is a curve formed by drawing data information at different times, the bus traction load curve is drawn by taking time as a horizontal axis and data information as a vertical axis, that is, the bus traction load curve includes a plurality of bus traction load curves with different data attributes, for example, a voltage curve of the bus traction load, a current curve of the bus traction load, an active power curve of the bus traction load, a curve with different data attributes such as reactive power of the bus traction load, and when load flow calculation is required, load flow calculation is performed by determining data information represented by curve points with different data attributes corresponding to the same time as a basis of load flow calculation.
It should be noted that, in the embodiment of the present invention, after the safety checking device determines the data information corresponding to the bus traction load at the same time, the data information corresponding to the time is restored to the high-voltage transformer coil of the rectifier transformer and the inverter feedback transformer at the ac/dc boundary of the power supply system, under the action of the high-voltage transformer coil, the power flow calculation at different times is performed on the target power supply scheme to obtain the power flow calculation results corresponding to different times, and then the data attribute corresponding to the power flow calculation results is written into the corresponding preset power flow calculation result curve table, where the preset power flow calculation result curve table is an empty table of the non-stored data information established when the power supply system model is established.
Fig. 4 is a schematic modeling diagram of an exemplary bus traction load curve and a key device tide calculation result curve according to an embodiment of the present invention. As shown in fig. 4, the safety check device establishes a preset power flow calculation result curve table of the key equipment in the pscadia, where the preset power flow calculation result curve table includes a preset transformer coil power flow calculation result curve table, a preset ac line power flow calculation result curve table, and a preset bus power flow calculation result curve table, and specifically, the number of the preset power flow calculation result curve tables established by the safety check device is related to the number of the key equipment included in the ac power supply system.
As shown in fig. 2, the transformers refer to main transformers 1 to 2, and when the safety check device establishes a preset transformer load flow calculation result curve table, the preset transformer load flow calculation result curve table includes a high-voltage transformer winding load flow calculation result curve table of the preset main transformer 1, a high-voltage transformer winding load flow calculation result curve table of the preset main transformer 2, a low-voltage transformer winding load flow calculation result curve table of the preset main transformer 1, and a low-voltage transformer winding load flow calculation result curve table of the preset main transformer 2, and the number of the specifically established preset transformer winding load flow calculation result curve tables can be determined according to actual requirements and application scenarios.
It should be noted that, in the embodiment of the present invention, a space for storing the result of the power flow calculation of each key device is reserved in the preset power flow calculation result curve table established by each key device, for example: the key equipment codes (ID), point numbers, active power, reactive power, voltage, current and other basic attributes, and the data information stored in the preset power flow calculation result curve table of the key equipment and the key equipment is in one-to-many correspondence.
It should be noted that, in the embodiment of the present invention, the number of groups of data information to be stored in the preset busbar traction load curve table is equal to the number of groups of data information to be stored in the preset power flow calculation result curve table of the key device.
When the safety checking device performs the ith power flow calculation, the active power and the reactive power at the ith moment are taken out from the bus traction load curve and used as the current active power and the current reactive power of the bus traction load, the active power and the reactive power are restored to the high-voltage transformer rolls of the rectifier transformer and the inverter feedback transformer at the AC-DC boundary of the power supply system, then the power flow calculation is performed on the target power supply scheme, and if the power flow calculation is performed by utilizing the data information corresponding to the ith moment in the bus traction load curve, the obtained power flow calculation result of the transformer rolls, namely the voltage, the current, the active power and the reactive power of the transformer rolls, is correspondingly written into the positions of the voltage, the current, the active power and the reactive power at the ith moment of the power flow calculation result table corresponding to the transformer rolls.
It should be noted that, in the embodiment of the present invention, the safety check device may perform load flow calculation on the target power supply scheme of the ac power supply system by using the data information corresponding to different times in the bus traction load curve, and write the data information into the corresponding preset load flow calculation result curve table until the target load flow calculation result curve table is obtained.
Specifically, in an embodiment of the present invention, a safety check device performs, according to a target power flow calculation result curve table, power flow safety check on an ac power supply system, including: respectively taking out different power flow calculation results of the key equipment from the target power flow calculation result table, and comparing the power flow calculation results with corresponding preset values to obtain comparison results of the key equipment; based on the comparison result, the safety of the target power supply scheme is judged.
It should be noted that, in the embodiment of the present invention, the security check device compares any one of the data stored in the power flow calculation result table with a preset value corresponding to the data attribute of the key device according to the data attribute, so as to obtain a comparison result.
The safety checking device respectively takes out data stored in the target transformer coil power flow calculation result table and compares the data with a preset value corresponding to the transformer coil, specifically, if the target transformer coil power flow calculation result table stores thirty times of power flow calculation results, data information of a plurality of data attributes included in each power flow calculation result is compared with a preset safety limit value corresponding to the data attributes of the transformer coil, and if the active, reactive and current in the power flow calculation result is greater than the preset safety limit value or the voltage is greater than the preset safety upper limit value or less than the preset safety lower limit value, the target power supply scheme has potential safety hazards, weak links of the target power supply scheme are found, and safety checking of the target power supply scheme is realized.
The embodiment of the invention discloses a safety checking method, which comprises the following steps: establishing a power supply system model, and determining a high-voltage transformer coil which is positioned at an alternating current-direct current boundary and is contained in an alternating current power supply system in the power supply system model as a bus traction load; collecting load data of bus traction load at different moments and initial data of other equipment different from the bus traction load in an alternating current power supply system; generating a bus traction load curve corresponding to the ground state section and the bus traction load based on the load data and the initial data; and carrying out power flow safety check aiming at a target power supply scheme on the alternating current power supply system based on the ground state section and the bus traction load curve. According to the safety check method provided by the embodiment of the invention, the high-voltage transformer coil positioned at the AC/DC boundary in the power supply system model is determined as the bus traction load, so that load data of the bus traction load and the like are calculated to perform load flow calculation, the real-time acquisition of the data is realized, and the safety check of the power supply system can be realized by using PSCADA.
The embodiment of the invention also provides a safety checking device, and fig. 5 is a schematic structural diagram of the safety checking device. As shown in fig. 5, the security check device includes:
The building module 501 is configured to build a power supply system model, and determine a high-voltage transformer roll, which is located at an ac/dc boundary and is included in an ac power supply system, in the power supply system model as a bus traction load;
the acquisition module 502 is configured to acquire load data of the bus traction load at different moments, and initial data of other devices in the ac power supply system that are different from the bus traction load;
a generating module 503, configured to generate a bus traction load curve corresponding to the ground state section and the bus traction load based on the load data and the initial data;
and the processing module 504 is used for carrying out tide safety check aiming at a target power supply scheme on the alternating current power supply system based on the ground state section and the bus traction load curve.
Optionally, the collecting module 502 is specifically configured to collect data information corresponding to the starting time of the other device in the preset time period, so as to obtain the initial data; and in the preset time period, acquiring data information of the bus traction load once every interval preset time period, and determining the acquired data information as the load data.
Optionally, the generating module 503 is specifically configured to combine the data information collected at the starting time in the load data with the initial data to form the ground state section; correspondingly writing the load data into a preset busbar traction load curve table according to data attributes and data acquisition time to obtain a target busbar traction load curve table; and generating the bus traction load curve by using the target bus traction load curve table.
Optionally, the processing module 504 is specifically configured to configure the ac power supply system based on the ground state section, and perform power supply adjustment on the ac power supply system according to a preset power supply adjustment manner, so that the ac power supply system executes the target power supply scheme; carrying out load flow calculation on the target power supply scheme according to the bus traction load curve, and writing a load flow calculation result into a preset load flow calculation result curve table to obtain a target load flow calculation result curve table, wherein the target load flow calculation result curve table comprises a load flow calculation result curve table of key equipment, and the key equipment is main equipment for influencing the safety of an alternating current power supply system; and carrying out power flow safety check on the alternating current power supply system according to the target power flow calculation result curve table.
Optionally, the processing module 504 is specifically configured to perform power flow calculation at different times on the target power supply scheme by using data information at different times in the busbar traction load curve, so as to obtain corresponding power flow calculation results at different times; and correspondingly writing the power flow calculation results corresponding to the different moments into the preset power flow calculation result curve table according to the data attribute and the different moments to obtain the target power flow calculation result curve table.
Optionally, the processing module 504 is specifically configured to sequentially take out a power flow calculation result of the key device from the power flow calculation result table corresponding to the key device, and compare the power flow calculation result with a preset value of the key device to obtain a comparison result of the key device; and judging the safety of the target power supply scheme based on the comparison result.
Optionally, the generating module 503 is specifically configured to generate the ground state section based on the load data and the initial data; generating a traction load curve to be adjusted based on the load data; and determining the bus traction load curve based on the traction load curve to be adjusted.
Optionally, the generating module 503 is specifically configured to determine the bus traction load curve to be adjusted as the bus traction load curve; or, the bus traction load curve to be adjusted is adjusted, and the adjusted bus traction load curve is determined to be the bus traction load curve.
Fig. 6 is a schematic structural diagram of a safety checking device according to an embodiment of the present invention. As shown in fig. 6, the security check device includes: a processor 601, a memory 602, and a communication bus 603;
The communication bus 603 is configured to implement a communication connection between the processor 601 and the memory 602;
the processor 601 is configured to execute a security check program stored in the memory 602, so as to implement the security check method described above.
The embodiment of the invention provides a safety checking device, which is used for establishing a power supply system model, and determining a high-voltage transformer coil which is positioned at an alternating current-direct current boundary and is contained in an alternating current power supply system in the power supply system model as a bus traction load; collecting load data of bus traction load at different moments and initial data of other equipment different from the bus traction load in an alternating current power supply system; generating a bus traction load curve corresponding to the ground state section and the bus traction load based on the load data and the initial data; and carrying out power flow safety check aiming at a target power supply scheme on the alternating current power supply system based on the ground state section and the bus traction load curve. According to the safety checking device provided by the embodiment of the invention, the high-voltage transformer coil positioned at the AC/DC boundary in the power supply system model is determined as the bus traction load, so that load data of the bus traction load and the like are calculated to perform tide calculation, the real-time acquisition of the data is realized, and the safety checking of the power supply system can be realized by using PSCADA.
Embodiments of the present invention provide a computer-readable storage medium storing one or more programs executable by one or more processors to implement the above-described security check method.
It will be apparent to those skilled in the art that embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A security check method, the method comprising:
establishing a power supply system model, and determining a high-voltage transformer coil which is positioned at an alternating current-direct current boundary and is contained in an alternating current power supply system in the power supply system model as a bus traction load;
collecting load data of the bus traction load at different moments and initial data of other equipment which is different from the bus traction load in the alternating current power supply system;
generating a bus traction load curve corresponding to the ground state section and the bus traction load based on the load data and the initial data;
based on the ground state section and the bus traction load curve, carrying out power flow safety check aiming at a target power supply scheme on the alternating current power supply system;
the collecting the load data of the bus traction load at different moments and the initial data of other equipment different from the bus traction load in the alternating current power supply system comprises the following steps:
acquiring data information corresponding to the starting moment of the other equipment in a preset time period to obtain the initial data;
and in the preset time period, acquiring data information of the bus traction load once every interval preset time period, and determining the acquired data information as the load data.
2. The method of claim 1, wherein generating a bus bar traction load curve corresponding to a ground state section and the bus bar traction load based on the load data and the initial data comprises:
the data information acquired at the initial moment in the load data and the initial data form the ground state section;
correspondingly writing the load data into a preset busbar traction load curve table according to data attributes and data acquisition time to obtain a target busbar traction load curve table;
and generating the bus traction load curve by using the target bus traction load curve table.
3. The method of claim 1, wherein the performing a power flow safety check for a target power supply scheme for the ac power supply system based on the ground state section and the bus bar traction load curve comprises:
based on the ground state section, configuring the alternating current power supply system, and carrying out power supply adjustment on the alternating current power supply system according to a preset power supply adjustment mode so as to enable the alternating current power supply system to execute the target power supply scheme;
carrying out load flow calculation on the target power supply scheme according to the bus traction load curve, and writing a load flow calculation result into a preset load flow calculation result curve table to obtain a target load flow calculation result curve table, wherein the target load flow calculation result curve table comprises a load flow calculation result curve table of key equipment, and the key equipment is main equipment for influencing the safety of an alternating current power supply system;
And carrying out power flow safety check on the alternating current power supply system according to the target power flow calculation result curve table.
4. The method according to claim 3, wherein the step of performing load flow calculation on the target power supply scheme according to the bus traction load curve, and writing a result of the load flow calculation into a preset load flow calculation result curve table to obtain a target load flow calculation result curve table includes:
carrying out power flow calculation at different moments on the target power supply scheme by utilizing data information at different moments in the bus traction load curve to obtain power flow calculation results corresponding to different moments;
writing the power flow calculation result into the preset power flow calculation result curve table to obtain the target power flow calculation result curve table.
5. The method according to claim 3, wherein the step of performing power flow safety check on the ac power supply system according to the target power flow calculation result curve table includes:
respectively taking out different power flow calculation results of the key equipment from the target power flow calculation result curve table, and comparing the power flow calculation results with corresponding preset values to obtain comparison results of the key equipment;
And judging the safety of the target power supply scheme based on the comparison result.
6. The method of claim 1, wherein generating a bus bar traction load curve corresponding to a ground state section and the bus bar traction load based on the load data and the initial data comprises:
generating the ground state section based on the load data and the initial data;
generating a traction load curve to be adjusted based on the load data;
and determining the bus traction load curve based on the traction load curve to be adjusted.
7. The method of claim 6, wherein the determining a bus traction load curve corresponding to the bus traction load based on the bus traction load curve to be adjusted comprises:
determining the bus traction load curve to be adjusted as the bus traction load curve;
or, the bus traction load curve to be adjusted is adjusted, and the adjusted bus traction load curve is determined to be the bus traction load curve.
8. A security check device, characterized in that the security check device comprises:
The system comprises a building module, a control module and a control module, wherein the building module is used for building a power supply system model and determining a high-voltage transformer coil which is positioned at an alternating current-direct current boundary and is contained in an alternating current power supply system in the power supply system model as a bus traction load;
the acquisition module is used for acquiring load data of the bus traction load at different moments and initial data of other equipment which is different from the bus traction load in the alternating current power supply system;
the generating module is used for generating a bus traction load curve corresponding to the ground state section and the bus traction load based on the load data and the initial data;
the processing module is used for carrying out tide safety check aiming at a target power supply scheme on the alternating current power supply system based on the ground state section and the bus traction load curve;
the acquisition module is further used for acquiring data information corresponding to the starting moment of the other equipment in a preset time period to obtain the initial data; and in the preset time period, acquiring data information of the bus traction load once every interval preset time period, and determining the acquired data information as the load data.
9. A security check device, characterized in that the security check device comprises: a processor, a memory, and a communication bus;
The communication bus is used for realizing communication connection between the processor and the memory;
the processor is configured to execute a security check program stored in the memory, so as to implement the security check method of any one of claims 1 to 7.
10. A computer-readable storage medium, wherein the computer-readable storage medium stores one or more programs executable by one or more processors to implement the security check method of any of claims 1-7.
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