CN116566045A - Method and system for collecting multi-service scene of self-adaptive substation - Google Patents
Method and system for collecting multi-service scene of self-adaptive substation Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 56
- 238000007781 pre-processing Methods 0.000 claims abstract description 4
- 238000004364 calculation method Methods 0.000 claims description 42
- 238000005259 measurement Methods 0.000 claims description 18
- 230000011664 signaling Effects 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 9
- 230000003044 adaptive effect Effects 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 231100000279 safety data Toxicity 0.000 abstract description 2
- 230000000875 corresponding effect Effects 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 238000013480 data collection Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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Classifications
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The invention discloses a method and a system for collecting multi-service scenes of a self-adaptive transformer substation, wherein the method comprises the following steps: acquiring data format and parameter information of each acquisition device in the transformer substation; different acquisition schemes are set according to different service scenes; dynamically selecting a corresponding acquisition scheme according to the service scene of the current acquisition task; according to the selected acquisition scheme, acquiring data from each acquisition device, preprocessing and uniformly modeling; and displaying the acquired data in real time and providing output outwards. According to the invention, through analyzing the characteristics of each service data acquisition, the acquired real-time data such as voltage, current, frequency and the like and the equipment body safety data are combined and stored by utilizing an object modeling mode and a plug-in type data acquisition module, and simultaneously, the data acquired in real time on site are provided.
Description
Technical Field
The invention relates to the field of data acquisition of transformer substations in the power industry, in particular to a method for acquiring multi-service scenes of a self-adaptive transformer substation.
Background
The substation data acquisition forwarding equipment is classified according to different services, mainly relates to different equipment such as telecontrol, credit protection, metering concentrator, PMU concentrator, network security monitoring and the like and different services, each acquisition device is designed according to the characteristics of the service itself in software design and method, and is not designed to be configured, managed and maintained by adopting a unified platform.
The data of main concern of telemechanical service acquisition and forwarding comprises field voltage, current, frequency, active and reactive measurement data acquired by a measurement and control device, and signal data of states of a switch knife switch and the like; the information protection business mainly relates to remote signaling, remote measurement, fault wave recording data and protection device signal data of primary equipment such as a breaker, a transformer and the like which are collected by a protection device; the metering service mainly collects data related to the kilowatt-hour meter, such as data of electric quantity, ABC three-phase voltage, ABC three-phase unbalance and the like; the PMU concentrator mainly acquires synchronous vector data from the PMU acquisition device and mainly acquires voltage, current, engine power angle and real-time dynamic data record; the network security service mainly acquires the IP, mac, operating system information, open ports, communication pair information and the like of all communication equipment at the station end.
The existing transformer substation data acquisition mode still adopts a mode that each service uses one set of collector and several services are combined to use one set, but all service integration acquisition methods are still lacking, and the design and the use methods of each service system are inconsistent.
The multi-service multi-scene uses different design models and configuration methods, so that engineering implementation configuration needs to be familiar with different operation modes, and the data acquired by each service cannot be correlated, so that the configuration workload is large, the data acquisition is repeated, the data are mutually opaque, and the like.
The existing collection devices of various businesses such as remote, security and PMU, which are adopted by various manufacturers such as Nanrui relay security, nanrui technology and Nanrui self, are still separate, and although intelligent remote motivations are developed later, only the businesses such as remote, security and PMU are considered, the businesses of network security monitoring are not considered, and the self-adaption of different hardware devices is not realized, so that the collection device cannot adapt to the data collection of all businesses of a transformer substation.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
In view of the above problems, the invention provides the following technical solutions: a method for collecting multi-service scenes of a self-adaptive transformer substation,
therefore, the invention aims to provide a method for acquiring multi-service scenes of a self-adaptive transformer substation.
In order to solve the technical problems, the invention provides the following technical scheme: a method for collecting multi-service scenes of a self-adaptive transformer substation comprises the following steps: acquiring data format and parameter information of each acquisition device in the transformer substation;
different acquisition schemes are set according to different service scenes;
dynamically selecting a corresponding acquisition scheme according to the service scene of the current acquisition task;
according to the selected acquisition scheme, acquiring data from each acquisition device, preprocessing and uniformly modeling;
and displaying the acquired data in real time and providing output outwards.
As a preferable scheme of the method for collecting the multi-service scene of the self-adaptive substation, the invention comprises the following steps: the transformer substation equipment comprises a protection device, a measurement and control device, a synchronous phasor device, a kilowatt-hour meter device and a transformer; the parameter information comprises field voltage, current, frequency, active and reactive measurement data in the telecontrol service, and signal data of states of a switch, a disconnecting link and the like; remote signaling, remote measurement, fault wave recording data and protection device signal data of a circuit breaker and a transformer in the signaling protection service; metering data such as electric quantity, ABC three-phase voltage, ABC three-phase unbalance and the like in service; the PMU acquisition device acquires voltage, current, engine power angle and real-time dynamic data record; IP, mac, operating system information, open ports and communication pair information of communication devices in the network security service.
As a preferable scheme of the method for collecting the multi-service scene of the self-adaptive substation, the invention comprises the following steps: modeling according to substation data acquisition equipment, dividing the substation data acquisition equipment into secondary equipment, primary equipment, logic equipment, remote signaling, remote sensing and remote pulse, wherein each class contains general attributes such as names, descriptions and acquisition object addresses;
the secondary equipment class comprises private attributes such as an IP address, an operating system, an open port and a primary equipment object link;
the primary equipment class comprises a voltage class, a secondary equipment list and an equipment number;
the logic device class comprises a device address and a device link;
the remote signaling class comprises address information, acquisition values, quality data and logic equipment links;
the telemetry class comprises address information, acquisition values, calculation values, quality data, coefficients, multiplying power, offset and logic equipment links;
the remote pulse class comprises address information, acquisition values, quality data, multiplying power and logic equipment links;
the secondary equipment comprises logic equipment, wherein the logic equipment comprises remote signaling type, remote measuring type and remote pulse type; and the secondary device may be associated with the primary device.
As a preferable scheme of the method for collecting the multi-service scene of the self-adaptive substation, the invention comprises the following steps: the service to be collected is uniformly modeled according to the information provided by the device,
collecting data of a transformer substation protection device, a kilowatt-hour meter device and transformer equipment;
each device builds an IED equipment model; the device attribute definition includes name, description, equipment type, manufacturer and version information
Each device comprises one or more acquisition service models DataCollectService, and the service attributes of the device comprise names, descriptions and protocol types;
the acquisition service model comprises a data object model, and object attributes of the data object model comprise names and descriptions;
the data object model includes data object attributes including name, collection value, actual value.
As a preferable scheme of the method for collecting the multi-service scene of the self-adaptive substation, the invention comprises the following steps: the method adopts plug-in units to adapt to different acquisition application scenes, and each acquisition plug-in unit acquires or writes data by using a unified read-write interface; in the modeling process, service plugins required by different devices are configured according to service scenes of the different devices, and in the loading configuration process, the system adaptively acquires data information of the different devices according to the configuration plugins;
when only the tele-operation service exists, loading corresponding acquisition plugins such as 61850 acquisition plugins and 103 acquisition plugins;
when only network security service exists, loading an SNMP acquisition plug-in and a syslog acquisition plug-in;
when all service data need to be acquired, all the existing acquisition plug-ins are loaded for acquisition;
after the data acquisition is completed, the corresponding value, the time scale and the quality bit are written into the real-time database through writing operation, and the value can be acquired through reading or subscribing the message.
As a preferable scheme of the method for collecting the multi-service scene of the self-adaptive substation, the invention comprises the following steps: dynamically calculating an acquisition value to be calculated according to actual needs, acquiring a calculation formula in data from a service model, subscribing a data value attribute of a corresponding object according to a variable attribute name in the calculation formula, when the attribute value in the calculation formula changes, receiving the changed data value, calculating according to the calculation formula and coefficients, and outputting a calculation result to a calculation value attribute of the calculation point; the calculated result is simultaneously stored in a real-time database in real time, and can be read by other modules, and the other modules can acquire the calculated value attribute of the object in a subscription mode and also can acquire the calculated data in real time.
As a preferable scheme of the method for collecting the multi-service scene of the self-adaptive substation, the invention comprises the following steps: the hot spot temperature calculation mode of the transformer winding is as follows:
θ 1 ＝θ 0 +Δθ nt ＝θ 0 +H×g r
g r ＝θ r -θ 0p
θ 0p ＝(θ 0 +θ l )/2
wherein θ is 0 For the actual measurement of the top layer temperature, theta r For measuring average temperature, theta of winding of transformer 0p Average temperature of oil, θ l Actual measurement of bottom oil temperature, g of transformer r For the temperature difference value delta theta of transformer oil nt Actual oil temperature difference of the transformer;
the telemetry value percentage error calculation mode is as follows:
error e= (comparison amount-reference amount)/reference amount x100%
Wherein E represents the error at each adopted value, and N represents the number of sampling values;
where U represents the i-th sampling value and N is the number of sampling values.
In view of the above problems, the invention provides the following technical solutions: an acquisition system capable of self-adapting to multi-service scenes of a transformer substation.
Therefore, the technical problems solved by the invention are as follows: the method comprises the steps of collecting and identifying equipment types needing to be collected in a transformer substation through a plurality of modules, collecting data information in different types of equipment and different businesses in a self-adaptive mode, carrying out unified modeling on the different businesses, and then calculating and outputting a result through data.
In order to solve the technical problems, the invention provides the following technical scheme: an adaptive substation multi-service scenario acquisition system, comprising: the system comprises a substation equipment identification module, an information acquisition module, a model building module and a data processing module;
the substation equipment identification module is used for identifying equipment types needing to be collected in the substation;
the information acquisition module is used for acquiring data information in different kinds of equipment and different services;
the construction model module performs unified modeling on the service to be acquired according to the information provided by the device
The data processing module performs calculation according to the configured calculation formula and parameters, and finally stores the calculation result into the calculated value attribute of the object, and can be provided for other modules needing to be forwarded or displayed.
A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method as described above when executing the computer program.
A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method as described above.
The invention has the beneficial effects that: according to the invention, through analyzing the characteristics of each service data acquisition, the acquired real-time data such as voltage, current, frequency and the like and the equipment body safety data are combined and stored by utilizing an object modeling mode and a plug-in type data acquisition module, and simultaneously, the data acquired in real time on site are provided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
fig. 1 is an overall flowchart of a method for collecting a multi-service scenario of a self-adaptive substation according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of modeling classification of a method for collecting multi-service scenarios of a self-adaptive substation according to a first embodiment of the present invention.
Fig. 3 is a block diagram of a collection system for a multi-service scenario of a self-adaptive substation according to a second embodiment of the present invention.
Detailed Description
The foregoing objects, features, and advantages of the invention will be more readily apparent from the following detailed description of the embodiments of the invention taken in conjunction with the accompanying drawings in which it is evident that the illustrated embodiments are some, but not all embodiments of the invention. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
While the embodiments of the present invention have been illustrated and described in detail in the drawings, the cross-sectional view of the device structure is not to scale in the general sense for ease of illustration, and the drawings are merely exemplary and should not be construed as limiting the scope of the invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Also in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper, lower, inner and outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first, second, or third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The terms "mounted, connected, and coupled" should be construed broadly in this disclosure unless otherwise specifically indicated and defined, such as: can be fixed connection, detachable connection or integral connection; it may also be a mechanical connection, an electrical connection, or a direct connection, or may be indirectly connected through an intermediate medium, or may be a communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1 to fig. 2, for one embodiment of the present invention, a method for collecting a multi-service scenario of an adaptable substation is provided, including:
acquiring data format and parameter information of each acquisition device in the transformer substation;
different acquisition schemes are set according to different service scenes;
dynamically selecting a corresponding acquisition scheme according to the service scene of the current acquisition task;
according to the selected acquisition scheme, acquiring data from each acquisition device, preprocessing and uniformly modeling;
and displaying the acquired data in real time and providing output outwards.
The transformer substation equipment comprises a protection device, a measurement and control device, a synchronous phasor device, a kilowatt-hour meter device and a transformer; the parameter information comprises field voltage, current, frequency, active and reactive measurement data in the telecontrol service, and signal data of states of a switch, a disconnecting link and the like; remote signaling, remote measurement, fault wave recording data and protection device signal data of a circuit breaker and a transformer in the signaling protection service; metering data such as electric quantity, ABC three-phase voltage, ABC three-phase unbalance and the like in service; the PMU acquisition device acquires voltage, current, engine power angle and real-time dynamic data record; IP, mac, operating system information, open ports and communication pair information of communication devices in the network security service.
Modeling according to substation data acquisition equipment, dividing the substation data acquisition equipment into secondary equipment, primary equipment, logic equipment, remote signaling, remote sensing and remote pulse, wherein each class contains general attributes such as names, descriptions and acquisition object addresses;
the secondary equipment class comprises private attributes such as an IP address, an operating system, an open port and a primary equipment object link;
the primary equipment class comprises a voltage class, a secondary equipment list and an equipment number;
the logic device class comprises a device address and a device link;
the remote signaling class comprises address information, acquisition values, quality data and logic equipment links;
the telemetry class comprises address information, acquisition values, calculation values, quality data, coefficients, multiplying power, offset and logic equipment links;
the remote pulse class comprises address information, acquisition values, quality data, multiplying power and logic equipment links;
the secondary equipment comprises logic equipment, wherein the logic equipment comprises remote signaling type, remote measuring type and remote pulse type; and the secondary device may be associated with the primary device.
The service to be collected is uniformly modeled according to the information provided by the device,
collecting data of a transformer substation protection device, a kilowatt-hour meter device and transformer equipment;
each device builds an IED equipment model; the device attribute definition includes name, description, equipment type, manufacturer and version information
Each device comprises one or more acquisition service models DataCollectService, and the service attributes of the device comprise names, descriptions and protocol types;
the acquisition service model comprises a data object model, and object attributes of the data object model comprise names and descriptions;
the data object model includes data object attributes including name, collection value, actual value.
In order to meet the requirements of different acquisition functions of different services, different acquisition application scenes are self-adaptive by adopting a plug-in mode. Because of adopting the mode of object modeling, each acquisition plug-in can acquire or write data through a unified read-write interface. In the modeling process, service plugins required by different devices are configured according to service scenes of the different devices, and in the loading configuration process, the system adaptively acquires data information of the different devices according to the configuration plugins;
when only the tele-operation service exists, loading corresponding acquisition plugins such as 61850 acquisition plugins and 103 acquisition plugins;
when only network security service exists, loading an SNMP acquisition plug-in and a syslog acquisition plug-in;
when all service data need to be acquired, all the existing acquisition plug-ins are loaded for acquisition;
after the data acquisition is completed, the corresponding value, the time scale and the quality bit are written into the real-time database through writing operation, and the value can be acquired through reading or subscribing the message.
Dynamically calculating an acquisition value to be calculated according to actual needs, acquiring a calculation formula in data from a service model, subscribing a data value attribute of a corresponding object according to a variable attribute name in the calculation formula, when the attribute value in the calculation formula changes, receiving the changed data value, calculating according to the calculation formula and coefficients, and outputting a calculation result to a calculation value attribute of the calculation point; the calculated result is simultaneously stored in a real-time database in real time, and can be read by other modules, and the other modules can acquire the calculated value attribute of the object in a subscription mode and also can acquire the calculated data in real time.
The hot spot temperature calculation mode of the transformer winding is as follows:
θ 1 ＝θ 0 +Δθ nt ＝θ 0 +H×g r
g r ＝θ r -θ 0p
θ 0p ＝(θ 0 +θ l )/2
wherein θ is 0 For the actual measurement of the top layer temperature, theta r For measuring average temperature, theta of winding of transformer 0p Average temperature of oil, θ l Actual measurement of bottom oil temperature, g of transformer r For the temperature difference value delta theta of transformer oil nt Actual oil temperature difference of the transformer;
for a circuit breaker, it is at 0.5I s0 (I s0 For rated short circuit break current) is based on the electrical wear of one break, when I s ＜I s0 At 0.35, and 0.5I at a time s0 Current I with same break abrasion s Equivalent number of breaks N s Is N s ＝1.83×(0.35×I s0 /I s ) 3
When I s ≥0.35I s0 At the same time 0.5I s0 Current I with same break abrasion s Equivalent number of breaks N s The method comprises the following steps:
N s ＝(0.5×I s0 /I s ) 1.7
in which Is 0 Switching off the current for the rated short circuit of the circuit breaker; is the actual breaking current of the breaker;
N s to break I s Time and once 0.5I s0 The equivalent breaking times of the breaking wear are the same.
The telemetry value percentage error calculation mode is as follows:
error e= (comparison amount-reference amount)/reference amount x100%
Wherein E represents the error at each adopted value, and N represents the number of sampling values;
where U represents the i-th sampling value and N is the number of sampling values.
Example 2
Referring to fig. 3, for one embodiment of the present invention, an adaptive substation multi-service scenario acquisition system is provided, which includes a substation equipment identification module 100, an information acquisition module 200, a construction model module 300, and a data processing module 400;
the substation equipment identification module 100 is used for identifying equipment types needing to be collected in a substation;
the information acquisition module 200 is used for acquiring data information in different kinds of equipment and different services;
the modeling module 300 performs unified modeling on the service to be collected according to the information provided by the device
The data processing module 400 performs calculation according to the configured calculation formula and parameters, and finally stores the calculation result into the calculated value attribute of the object, and may also provide the calculation result to other modules needing to be forwarded or displayed.
Example 3
One embodiment of the present invention, which is different from the first two embodiments, is: the functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only memory (ROM), a random access memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: electrical connection (electronic device), portable computer disk cartridge (magnetic device), random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (eeprom) with one or more wiring
(EPROM or flash memory), fiber optic means, and portable Compact Disc Read Only Memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Example 4
In this embodiment, a specific use experiment is performed on the method of the present invention, and in a preset equivalent experimental environment, this embodiment performs 3 groups of experiments on the existing conventional method and the method of this embodiment, respectively, where specific experimental results are shown in tables 1, 2, and shown in the following table
Table 1 comparison table for authentication time consumption
Table 2 authentication accuracy vs. table
| Comparison of detection accuracy | Experiment one | Experiment two | Experiment three |
| The method | 96.78％ | 94.2％ | 98.22％ |
| Conventional method | 82％ | 84％ | 87％ |
In the traditional method, different design models and configuration methods are used for multiple services and multiple scenes, so that engineering implementation configuration needs to be familiar with different operation modes, and data acquired by each service cannot be correlated, so that configuration workload is large, data acquisition is repeated, data are mutually opaque, and the like.
The existing collection devices which are adopted by various manufacturers and are separated from each other for various services such as telemechanical operation, security and PMU (Power management Unit), although intelligent telemechanical operation is developed later, only the services such as telemechanical operation, security and PMU are considered, the services of network security monitoring are not considered, and different hardware devices are not self-adaptive, so that the collection device cannot be suitable for data collection of all the services of a transformer substation.
Compared with the prior art, the method provided by the invention has the advantages that the detection speed is obviously improved, the authentication speed is obviously improved, the detection time is further reduced, the authentication result is ensured to be far higher than that of the prior art, and the error rate is reduced.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (10)
1. The method for collecting the multi-service scene of the self-adaptive substation is characterized by comprising the following steps of:
acquiring data format and parameter information of each acquisition device in the transformer substation;
different acquisition schemes are set according to different service scenes;
dynamically selecting a corresponding acquisition scheme according to the service scene of the current acquisition task;
according to the selected acquisition scheme, acquiring data from each acquisition device, preprocessing and uniformly modeling;
and displaying the acquired data in real time and providing output outwards.
2. The method for collecting the multi-service scene of the adaptive substation according to claim 1, wherein the method comprises the following steps: the transformer substation equipment comprises a protection device, a measurement and control device, a synchronous phasor device, a kilowatt-hour meter device and a transformer; the parameter information comprises field voltage, current, frequency, active and reactive measurement data in the telecontrol service, and signal data of states of a switch, a disconnecting link and the like; remote signaling, remote measurement, fault wave recording data and protection device signal data of a circuit breaker and a transformer in the signaling protection service; metering data such as electric quantity, ABC three-phase voltage, ABC three-phase unbalance and the like in service; the PMU acquisition device acquires voltage, current, engine power angle and real-time dynamic data record; IP, mac, operating system information, open ports and communication pair information of communication devices in the network security service.
3. The method for collecting the multi-service scene of the adaptive substation according to claim 2, wherein the method comprises the following steps: modeling according to substation data acquisition equipment, dividing the substation data acquisition equipment into secondary equipment, primary equipment, logic equipment, remote signaling, remote sensing and remote pulse, wherein each class contains general attributes such as names, descriptions and acquisition object addresses;
the secondary equipment class comprises private attributes such as an IP address, an operating system, an open port and a primary equipment object link;
the primary equipment class comprises a voltage class, a secondary equipment list and an equipment number;
the logic device class comprises a device address and a device link;
the remote signaling class comprises address information, acquisition values, quality data and logic equipment links;
the telemetry class comprises address information, acquisition values, calculation values, quality data, coefficients, multiplying power, offset and logic equipment links;
the remote pulse class comprises address information, acquisition values, quality data, multiplying power and logic equipment links;
the secondary equipment comprises logic equipment, wherein the logic equipment comprises remote signaling type, remote measuring type and remote pulse type; and the secondary device may be associated with the primary device.
4. A method for collecting a multi-service scenario of an adaptive substation according to claim 3, wherein: the service to be collected is uniformly modeled according to the information provided by the device,
collecting data of a transformer substation protection device, a kilowatt-hour meter device and transformer equipment;
each device builds an IED equipment model; the device attribute definition includes name, description, equipment type, manufacturer and version information
Each device comprises one or more acquisition service models DataCollectService, and the service attributes of the device comprise names, descriptions and protocol types;
the acquisition service model comprises a data object model, and object attributes of the data object model comprise names and descriptions;
the data object model includes data object attributes including name, collection value, actual value.
5. The method for collecting the multi-service scene of the adaptive substation according to claim 4, wherein the method comprises the following steps: the method adopts plug-in units to adapt to different acquisition application scenes, and each acquisition plug-in unit acquires or writes data by using a unified read-write interface; in the modeling process, service plugins required by different devices are configured according to service scenes of the different devices, and in the loading configuration process, the system adaptively acquires data information of the different devices according to the configuration plugins;
when only the tele-operation service exists, loading corresponding acquisition plugins such as 61850 acquisition plugins and 103 acquisition plugins;
when only network security service exists, loading an SNMP acquisition plug-in and a syslog acquisition plug-in;
when all service data need to be acquired, all the existing acquisition plug-ins are loaded for acquisition;
after the data acquisition is completed, the corresponding value, the time scale and the quality bit are written into the real-time database through writing operation, and the value can be acquired through reading or subscribing the message.
6. The method for collecting the multi-service scene of the adaptive substation according to claim 5, wherein the method comprises the following steps: dynamically calculating an acquisition value to be calculated according to actual needs, acquiring a calculation formula in data from a service model, subscribing a data value attribute of a corresponding object according to a variable attribute name in the calculation formula, when the attribute value in the calculation formula changes, receiving the changed data value, calculating according to the calculation formula and coefficients, and outputting a calculation result to a calculation value attribute of the calculation point; the calculated result is simultaneously stored in a real-time database in real time, and can be read by other modules, and the other modules can acquire the calculated value attribute of the object in a subscription mode and also can acquire the calculated data in real time.
7. The method for collecting the multi-service scene of the adaptive substation according to claim 6, wherein the method comprises the following steps: the hot spot temperature calculation mode of the transformer winding is as follows:
θ 1 ＝θ 0 +Δθ nt ＝θ 0 +H×g r
g r ＝θ r -θ 0p
θ 0p ＝(θ 0 +θ l )/2
wherein θ is 0 For the actual measurement of the top layer temperature, theta r For measuring average temperature, theta of winding of transformer 0p Average temperature of oil, θ l Actual measurement of bottom oil temperature, g of transformer r For the temperature difference value delta theta of transformer oil nt Actual oil temperature difference of the transformer;
the telemetry value percentage error calculation mode is as follows:
error e= (comparison amount-reference amount)/reference amount x100%
Wherein E represents the error at each adopted value, and N represents the number of sampling values;
where U represents the i-th sampling value and N is the number of sampling values.
8. The utility model provides a but collection system of self-adaptation transformer substation multi-service scene which characterized in that: the system comprises a substation equipment identification module (100), an information acquisition module (200), a model building module (300) and a data processing module (400);
the substation equipment identification module (100) is used for identifying equipment types needing to be acquired in the substation;
the information acquisition module (200) is used for acquiring data information in different types of equipment and different services;
the modeling module (300) performs unified modeling on the service to be acquired according to the information provided by the device
The data processing module (400) performs calculation according to the configured calculation formula and parameters, and finally stores the calculation result into the calculation value attribute of the object, and can also provide the calculation result for other modules needing to be forwarded or displayed.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of claim 1 when executing the computer program.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of claim 1.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116908674A (en) * | 2023-09-12 | 2023-10-20 | 川开电气有限公司 | Method and system for monitoring and predicting residual life of circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116908674A (en) * | 2023-09-12 | 2023-10-20 | 川开电气有限公司 | Method and system for monitoring and predicting residual life of circuit breaker |
| CN116908674B (en) * | 2023-09-12 | 2023-11-28 | 川开电气有限公司 | Method and system for monitoring and predicting residual life of circuit breaker |
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