CN116264376A - Transformer substation equipment overhauling and isolating method - Google Patents
Transformer substation equipment overhauling and isolating method Download PDFInfo
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- CN116264376A CN116264376A CN202211346880.9A CN202211346880A CN116264376A CN 116264376 A CN116264376 A CN 116264376A CN 202211346880 A CN202211346880 A CN 202211346880A CN 116264376 A CN116264376 A CN 116264376A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000002955 isolation Methods 0.000 claims abstract description 64
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 14
- 241000272814 Anser sp. Species 0.000 claims abstract description 9
- 238000012423 maintenance Methods 0.000 claims description 37
- 238000012544 monitoring process Methods 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 6
- 238000004040 coloring Methods 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000013507 mapping Methods 0.000 claims description 4
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 17
- 239000003086 colorant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000001012 protector Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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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
- H02J13/00002—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 monitoring
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Human Computer Interaction (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a transformer substation equipment overhaul isolation method, which comprises the following steps: 1) Analyzing the function logic of the protection device, deducing the influence range of the overhaul interval and forming a topological graph; 2) Constructing an overhaul interval auxiliary control linkage mechanism, and early warning an overhaul process risk point in time; 3) And constructing a potential exit risk point early warning mechanism, and actively prompting the isolation loopholes. The method realizes the deduction of the overhaul isolation influence range, the overhaul interval auxiliary control warning linkage and the potential exit risk point early warning function; compared with the simple modes of overhaul pressing plate switching, SV/GOOSE pressing plate control, five-prevention blocking and the like, the method is more three-dimensional and comprehensive, can realize the integral isolation of vision, a model layer and an electric parameter layer, and can effectively early warn and overhaul the protection misoperation rejection risk brought by effective recovery.
Description
Technical Field
The invention relates to the technical field of substation automation of power systems, in particular to a substation equipment overhauling and isolating method.
Background
At present, overhaul isolation of a transformer substation mainly depends on organization measures of institutional commitment, five-prevention and other technical measures to ensure the safety of an overhaul area. The isolation is atomic in the full sense, like the token memory access mechanism of a computer, once one party accesses it, the other potential accessing party cannot operate because of the lack of rights. However, in reality, island isolation of the overhaul area cannot be realized no matter in a work ticket system, a work permission system, an electronic key and a five-prevention mechanism. The reason for this is that the main body of operation is different, the authority range is different, and the work responsibility is different. Taking operation and maintenance personnel and operation personnel as examples, the operation personnel has the responsibility of ensuring that the protection device is prevented from misoperation and refusing operation as much as possible on the basis of reliable operation of the device, is responsible for power supply reliability, and belongs to different departments of the operation and maintenance personnel, and has the responsibility of being responsible for equipment bodies, maintaining and isolating and locking once, controlling the range and preventing multiple parties from operating reversely.
The key point of the implementation of equipment lock management during overhaul is still the lock management of the equipment. During service, it is necessary to lock the managed devices, in addition to the primary electrical devices, also the secondary electrical devices. The locking management of the equipment is realized by adopting different locking modes of partition and grading for the electric primary equipment and the electric secondary equipment. According to the actual situation of the transformer substation in China at present, when the misoperation prevention function of the operation switching operation is realized, the electric primary equipment adopts a locking mode, and during maintenance, the misoperation prevention lockset can still be adopted to realize the locking function of maintenance isolation, but the simulation previewing authority of the locking equipment in the system is required to be logically locked again. Most of the electric secondary devices are installed in auxiliary devices such as protection screens, measurement and control cabinets and terminal boxes, so that the screen/cabinet doors of the electric secondary devices need to be locked and informationized. During maintenance, the screen/cabinet door needs to be opened, and when the secondary equipment exposed outside needs to be prevented from being misoperated, a temporary locking management mode is considered to be adopted for the secondary equipment.
Disclosure of Invention
The invention mainly aims to solve the problem that the existing overhaul and isolation mode of transformer substation equipment cannot realize island isolation of an overhaul area, and provides an overhaul and isolation method of transformer substation equipment, which comprises the following steps: 1) Analyzing the function logic of the protection device, deducing the influence range of the overhaul interval and forming a topological graph; 2) Constructing an overhaul interval auxiliary control linkage mechanism, and early warning an overhaul process risk point in time; 3) And constructing a potential exit risk point early warning mechanism, and actively prompting the isolation loopholes. The method realizes the deduction of the overhaul isolation influence range, the overhaul interval auxiliary control warning linkage and the potential exit risk point early warning function; compared with the simple modes of overhaul pressing plate switching, SV/GOOSE pressing plate control, five-prevention blocking and the like, the method is more three-dimensional and comprehensive, can realize the integral isolation of vision, a model layer and an electric parameter layer, and can effectively early warn and overhaul the protection misoperation rejection risk brought by effective recovery.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the transformer substation equipment overhauling and isolating method comprises the following steps of:
step S1: analyzing the function logic of the protection device, deducing the influence range of the overhaul interval and forming a topological graph;
step S2: constructing an overhaul interval auxiliary control linkage mechanism, and early warning an overhaul process risk point in time to avoid the on-site manual misoperation to destroy isolation;
step S3: constructing a potential exit risk point early warning mechanism, and actively prompting the isolation loopholes;
the invention provides a overhaul isolation method for transformer substation equipment, which realizes the deduction of an overhaul isolation influence range, overhaul interval auxiliary control warning linkage and potential outlet risk point early warning function. Compared with the simple modes of overhaul pressing plate switching, SV/GOOSE pressing plate control, five-prevention locking and the like, the invention is more three-dimensional and comprehensive, can realize the integral isolation of vision, a model layer and an electric parameter layer, and can effectively early warn and overhaul to effectively recover the protection misoperation rejection risk.
Preferably, the specific process of the step S1 includes the following steps:
step S11: the protection device function logic is analyzed, and the protection device function logic can come from the specification of a protection device manufacturer, and in the specification, the influence of SV quality abnormality on the protection function is clear. If the merging unit completes maintenance isolation, not only the maintenance intervals can identify abnormal quality locking functional logic because of inconsistent maintenance, but also the functional logic locking can occur in the non-maintenance intervals, so that the mapping relation between the total station protection function and maintenance is constructed;
step S12: drawing a maintenance isolated override action risk boundary, and pre-warning the override trip risk of the last voltage level by analyzing a power grid framework to construct an influence topological graph of the cross-station and cross-voltage level;
step S13: and analyzing the isolation range to obtain an optimal overhaul setting mode and realizing minimized functional logic locking of the protection device.
Preferably, the specific process of the step S2 includes the following steps:
step S21: the method comprises the steps of constructing a data linkage mechanism of a substation monitoring system and an auxiliary control monitoring system, wherein the monitoring system is arranged in a substation 1 area, the auxiliary control monitoring system is arranged in a substation 4 area, the data interaction needs an encryption mechanism, and meanwhile, the data volume of video images is far greater than the processing capacity of the monitoring system, so that an edge gateway processing architecture is constructed;
step S22: and constructing an acousto-optic alarm and message information prompting mechanism.
Preferably, the specific process of the step S3 includes the following steps:
step S31: collecting video image data, and confirming the state of overhauling the hard pressing plate;
step S32: collecting a goose/sv receiving position, a soft pressing plate opening position, protection charging and discharging and logic information and a message maintenance zone bit in the protection device, and constructing a three-level isolation management system;
step S33: and analyzing various operation ticket operation scenes, providing a standard overhaul isolation scheme, and checking feedback information after overhaul in real time to form isolation degree assessment.
Preferably, the step S13 includes intelligently judging topology coloring, automatically judging the area where the equipment is located through the state of the equipment, the connection relation between the equipment and the state information of the direct connection equipment, automatically coloring the equipment, clearly distinguishing the area where the equipment is located through different colors, and reducing the difficulty of the operator in searching and selecting the maintenance equipment range.
Preferably, in the step S21, an edge gateway processing architecture is constructed, the edge gateway actively analyzes the maintenance operation ticket, extracts maintenance interval information, acquires video image data such as figures, hanging cards and the like from the auxiliary control monitoring system, and analyzes the condition of artificial maintenance isolation marks; and the edge gateway sends the analysis result to the monitoring system and provides an isolation early warning judgment basis.
Preferably, in the step S22, when it is identified that the inspection hard pressing plate is not in the inspection position by the video image data or that the protection device is not in the inspection state by the protection device liquid crystal and panel indicator light information, an alarm is sent to prompt an inspector to manually inspect.
Preferably, in the three-level isolation management system, first-level electric primary and auxiliary equipment adopts error-locking prevention to perform isolation locking management; the second stage, the electric secondary equipment adopts the isolation lockset to carry out isolation locking management; and thirdly, auxiliary equipment (box, screen and cabinet) of the electric secondary equipment and production auxiliary equipment adopt auxiliary control locks to carry out isolation locking management.
Therefore, the invention has the advantages that:
(1) The functions of deduction of the overhaul isolation influence range, auxiliary control and warning linkage of overhaul intervals and early warning of potential outlet risk points are realized;
(2) Compared with the simple modes of overhaul pressing plate switching, SV/GOOSE pressing plate control, five-prevention blocking and the like, the method is more three-dimensional and comprehensive, can realize the integral isolation of vision, a model layer and an electric parameter layer, and can effectively early warn and overhaul the protection misoperation rejection risk brought by effective recovery.
Drawings
Fig. 1 is a flowchart of a substation equipment overhaul isolation method according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of mapping relation between total station protection function and maintenance in the first embodiment of the present invention.
Fig. 3 is a schematic diagram of an edge gateway processing architecture according to an embodiment of the invention.
FIG. 4 is a schematic diagram of alarm logic in accordance with a first embodiment of the present invention.
1. A monitoring system 2, an auxiliary control monitoring system 3 and an edge gateway.
Detailed Description
The invention is further described below with reference to the drawings and detailed description.
Embodiment one:
a transformer substation equipment overhaul isolation method, as shown in figure 1, comprises the following steps:
step one: the deduction of the influence range of the overhaul interval is realized through the function logic analysis of the protection device, a topological graph is formed, and the specific process comprises the following steps:
first, the protector function logic is analyzed, which may come from protector manufacturer specifications, where the effect of SV quality anomalies on the protector function is clarified. If the merging unit completes maintenance isolation, not only the maintenance interval can identify abnormal quality locking functional logic because of inconsistent maintenance, but also functional logic locking can occur in the non-maintenance interval, so the embodiment constructs the mapping relation between the total station protection function and maintenance, as shown in fig. 2, the broken line indicates that after the merging unit is placed for maintenance, the protection n is inconsistent due to maintenance, and the service logic is withdrawn;
secondly, drawing a maintenance isolated override action risk boundary, and in the embodiment, analyzing a power grid framework, pre-warning the override trip risk of the last voltage level, and constructing an influence topological graph of the cross-station and the cross-voltage level;
then, an optimal overhaul setting mode is given through isolation range analysis, and minimized logic locking of the protection function is realized. The topology coloring is intelligently judged, the system automatically judges the area where a certain device is positioned according to the information such as the state of the device, the connection relation between the device and the device, the state of the direct connection device and the like, automatically colors the device, clearly distinguishes the area where the device is positioned according to different colors, and reduces the difficulty of an operator in searching and selecting the range of the overhauling device;
step two: constructing an overhaul interval auxiliary control linkage mechanism, and early warning an overhaul process risk point in time to avoid on-site manual misoperation to destroy isolation, wherein the specific process comprises the following steps of:
firstly, a data linkage mechanism of a substation monitoring system and an auxiliary control monitoring system is constructed. In general, the monitoring system is arranged in a substation 1 area, the auxiliary control monitoring system is arranged in a substation 4 area, and the data interaction needs an encryption mechanism, meanwhile, the video image data volume is far greater than the processing capacity of the monitoring system, so that an edge gateway processing architecture is constructed, as shown in fig. 3, an edge gateway 3 actively analyzes maintenance operation tickets, extracts maintenance interval information, acquires video image data such as figures and hang tags from the auxiliary control monitoring system 2, and analyzes the condition of artificial maintenance isolation marks; the analysis result is sent to the monitoring system 1 to provide judgment for isolation early warning;
then, constructing an acousto-optic warning and message information prompting mechanism, and when video image data identifies that the overhaul hard pressing plate is not in an overhaul position or the protection device is not in an overhaul state through identification of the liquid crystal and panel indicator lamp information of the protection device, sending a warning to prompt an overhaul personnel to manually check, wherein the warning logic is shown in figure 4;
step three: constructing a potential exit risk point early warning mechanism, actively prompting and isolating, wherein the specific process comprises the following steps:
firstly, not only the state of a hard pressing plate for entity maintenance is confirmed by collecting video image data, but also a three-level isolation management system is constructed by collecting goose/sv in a protection device, receiving and opening the position of the soft pressing plate, protecting charge and discharge and logic information, message maintenance zone bits and the like, and the first-level electrical primary and auxiliary equipment adopts error-locking prevention to carry out isolation locking management; the second stage, the electric secondary equipment adopts the isolation lockset to realize isolation locking management during maintenance; thirdly, auxiliary equipment (boxes, screens and cabinets) of the electric secondary equipment and production auxiliary equipment adopt auxiliary control locks to carry out isolation locking management;
and then, analyzing various operation ticket operation scenes, providing a standard overhaul isolation scheme on the basis, checking the overhauled feedback information in real time, and forming isolation degree assessment.
Embodiment two:
the substation equipment overhaul isolation method comprises the steps of firstly, realizing the link topology drawing of SV and GOOSE messages by analyzing a total station model file, realizing the analysis of an overhaul inconsistent locking range and the protection of associated display failure when a merging unit is overhauled on one side; secondly, locking the action behaviors of people at the overhaul interval through video image analysis, and timely early warning the overhaul error recovery and the omission recovery of operators; thirdly, the potential outlet condition is protected at intervals by monitoring the GOOSE receiving and outlet soft pressing plate; fourth, through synthesizing the information of five-prevention locking, evaluate the possible no-outlet situation; fifthly, by integrating the four steps, an overhaul isolation degree index is given.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. The transformer substation equipment overhauling and isolating method is characterized by comprising the following steps of:
step S1: analyzing the function logic of the protection device, deducing the influence range of the overhaul interval and forming a topological graph;
step S2: constructing an overhaul interval auxiliary control linkage mechanism, and early warning an overhaul process risk point in time;
step S3: and constructing a potential exit risk point early warning mechanism, and actively prompting the isolation loopholes.
2. The substation equipment overhaul isolation method according to claim 1, wherein the specific process of the step S1 comprises the following steps:
step S11: analyzing the function logic of the protection device, and constructing a mapping relation between the total station protection function and maintenance;
step S12: drawing an overstepping action risk boundary after maintenance isolation, and constructing an influence topological graph of cross-station and cross-voltage grades;
step S13: and analyzing the isolation range to obtain an optimal overhaul setting mode.
3. The substation equipment overhaul isolation method according to claim 1, wherein the specific process of the step S2 comprises the following steps:
step S21: constructing a data linkage mechanism of a substation monitoring system and an auxiliary control monitoring system;
step S22: and constructing an acousto-optic alarm and message information prompting mechanism.
4. A substation equipment overhaul isolation method according to claim 1 or 2 or 3, characterized in that the specific process of step S3 comprises the following steps:
step S31: collecting video image data, and confirming the state of overhauling the hard pressing plate;
step S32: collecting a goose/sv receiving position, a soft pressing plate opening position, protection charging and discharging and logic information and a message maintenance zone bit in the protection device, and constructing a three-level isolation management system;
step S33: and analyzing various operation ticket operation scenes, providing a standard overhaul isolation scheme, and checking feedback information after overhaul in real time to form isolation degree assessment.
5. The method according to claim 2, wherein the step S13 comprises intelligently determining topology coloring, automatically determining an area where the equipment is located by the state of the equipment itself, the connection relationship between the equipment and the equipment, and the status information of the directly connected equipment, and automatically coloring the equipment.
6. The method for overhauling and isolating transformer substation equipment according to claim 3, wherein in the step S21, an edge gateway processing architecture is constructed, an edge gateway actively analyzes an overhauling operation ticket, overhauls interval information is extracted, video image data is obtained from an auxiliary control monitoring system, and artificial overhauling and isolating marking conditions are analyzed; and the edge gateway sends the analysis result to the monitoring system and provides an isolation early warning judgment basis.
7. The method according to claim 3 or 6, wherein in step S22, an alarm is issued when it is recognized that the maintenance hard platen is not in the maintenance position by the video image data or that the protection device is not in the maintenance state by the protection device liquid crystal and panel indicator light information.
8. The method for overhauling and isolating transformer substation equipment according to claim 4, wherein in the three-level isolation management system, first-level electric primary and auxiliary equipment adopts error-locking prevention for isolation and locking management; the second stage, the electric secondary equipment adopts the isolation lockset to carry out isolation locking management; and thirdly, the auxiliary equipment of the electric secondary equipment and the production auxiliary equipment adopt an auxiliary control lockset to carry out isolation locking management.
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| CN202211346880.9A CN116264376A (en) | 2022-10-31 | 2022-10-31 | Transformer substation equipment overhauling and isolating method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117761584A (en) * | 2024-02-22 | 2024-03-26 | 保定华创电气有限公司 | Fault detection method and device for power transformer, electronic equipment and medium |
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- 2022-10-31 CN CN202211346880.9A patent/CN116264376A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117761584A (en) * | 2024-02-22 | 2024-03-26 | 保定华创电气有限公司 | Fault detection method and device for power transformer, electronic equipment and medium |
| CN117761584B (en) * | 2024-02-22 | 2024-05-17 | 保定华创电气有限公司 | Fault detection method and device for power transformer, electronic equipment and medium |
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