CN113054656A - Distribution transformer overhauling method and device, electronic equipment and storage medium - Google Patents
Distribution transformer overhauling method and device, electronic equipment and storage medium Download PDFInfo
- Publication number
- CN113054656A CN113054656A CN202110262049.4A CN202110262049A CN113054656A CN 113054656 A CN113054656 A CN 113054656A CN 202110262049 A CN202110262049 A CN 202110262049A CN 113054656 A CN113054656 A CN 113054656A
- Authority
- CN
- China
- Prior art keywords
- distribution
- overhauled
- transformer
- distribution transformer
- adjacent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000009413 insulation Methods 0.000 claims description 63
- 230000016507 interphase Effects 0.000 claims description 19
- 238000004590 computer program Methods 0.000 claims description 15
- 238000012423 maintenance Methods 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 12
- 230000009466 transformation Effects 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 8
- 238000012790 confirmation Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
-
- 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
- G06Q10/00—Administration; Management
- G06Q10/20—Administration of product repair or maintenance
-
- 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—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
-
- 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
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Human Resources & Organizations (AREA)
- Economics (AREA)
- Strategic Management (AREA)
- General Business, Economics & Management (AREA)
- Health & Medical Sciences (AREA)
- Marketing (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Tourism & Hospitality (AREA)
- Physics & Mathematics (AREA)
- Quality & Reliability (AREA)
- Manufacturing & Machinery (AREA)
- Operations Research (AREA)
- Entrepreneurship & Innovation (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- General Health & Medical Sciences (AREA)
- Primary Health Care (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The application relates to a distribution transformer overhauling method, a distribution transformer overhauling device, electronic equipment and a storage medium. The method comprises the following steps: determining each adjacent transformer area of the distribution transformer to be overhauled; the low-voltage distribution box is connected with the distribution transformer to be overhauled and the distribution transformers in the adjacent transformer areas to form a bypass system, and when the distribution transformer to be overhauled is overhauled, the bypass system supplies power to the transformer area where the distribution transformer to be overhauled is located and the adjacent transformer areas; and (4) overhauling the distribution transformer to be overhauled, and disconnecting the bypass system after the overhauling of the distribution transformer to be overhauled is completed. By adopting the method, the distribution transformer to be overhauled which breaks down can be overhauled under the condition of no power outage, so that the power supply reliability of the power system can be effectively improved, and the power consumption experience of users is improved.
Description
Technical Field
The present application relates to the field of power system technologies, and in particular, to a distribution transformer overhaul method, an apparatus, an electronic device, and a storage medium.
Background
The development of social productivity is not independent of the power system, human life is closely related to the power system, and meanwhile, the power system is inevitable to break down. Most of distribution transformers in an electric power system are 10kV, when the distribution transformers break down and need to be overhauled, the distribution transformers need to be powered off firstly, and then the fault overhauling is carried out. Thus, the power supply to the load carried by the distribution transformer is interrupted during blackout maintenance.
However, when the distribution transformer is subjected to a power failure inspection, it is necessary to notify the user in advance and perform a series of power load transfer operations. Not only can influence the power supply reliability of the power system, but also can influence the power consumption experience of users.
Disclosure of Invention
Therefore, in order to solve the above technical problems, it is necessary to provide a distribution transformer overhaul method, an apparatus, an electronic device, and a storage medium, which can effectively improve the power supply reliability of a power system and improve the power consumption experience of a user.
A distribution transformer service method, the method comprising:
determining each adjacent transformer area of the distribution transformer to be overhauled;
connecting the distribution transformer to be overhauled with the low-voltage distribution box of the distribution transformer in each adjacent distribution area to form a bypass system, wherein the bypass system supplies power to the distribution area where the distribution transformer to be overhauled is located and each adjacent distribution area when the distribution transformer to be overhauled is overhauled;
and overhauling the distribution transformer to be overhauled, and disconnecting the bypass system after the overhauling of the distribution transformer to be overhauled is completed.
In one embodiment, after the determining the adjacent zones of the distribution transformer to be overhauled, the method further includes:
and carrying out insulation treatment on the distribution transformer to be overhauled and the distribution transformer in each adjacent transformer area.
In one embodiment, the adjacent zones include a zone having a distance from the distribution transformer to be overhauled smaller than a preset distance, and the number of the adjacent zones is at least one.
In one embodiment, the low voltage switchgear coupling the distribution transformer to be serviced with distribution transformers in each of the adjacent bays forming a bypass system, comprises:
laying a low-voltage flexible cable between the distribution transformer to be overhauled and the distribution transformer in each adjacent transformer area;
respectively measuring the ground insulation resistance of the low-voltage flexible cable to the ground and the interphase insulation resistance of the interphase insulation resistance, when the ground insulation resistance or the interphase insulation resistance is smaller than a preset resistance value, returning to the step of carrying out insulation treatment on the distribution transformer to be overhauled and the distribution transformers in the adjacent transformer areas, and when the ground insulation resistance and the interphase insulation resistance are larger than or equal to the preset resistance value, discharging the low-voltage flexible cable;
and connecting the low-voltage flexible cable with the distribution transformer to be overhauled and the corresponding phase of the low-voltage distribution box of the distribution transformer in each adjacent distribution area to form the bypass system.
In one embodiment, when the distribution transformer to be overhauled in the bypass system and the distribution transformer in each adjacent distribution area run in parallel through the low-voltage distribution box, the distribution transformer to be overhauled is overhauled; the step of confirming the parallel operation comprises the following steps:
detecting preset conditions that the distribution transformer to be overhauled and the distribution transformers in the adjacent distribution areas run in parallel through the low-voltage distribution box, and closing a switch connected with the low-voltage flexible cable and the low-voltage distribution box when the preset conditions are met; the preset conditions include: the wiring group, the transformation ratio and the short-circuit voltage of the distribution transformer to be overhauled are the same as those of the distribution transformers in the adjacent transformer areas, and the capacity ratio of the distribution transformer to be overhauled to the distribution transformers in the adjacent transformer areas does not exceed a preset ratio;
and respectively measuring power parameters of the low-voltage flexible cable and the distribution transformer to be overhauled, and confirming that the distribution transformer to be overhauled in the bypass system and the distribution transformer in each adjacent distribution area run in parallel through the low-voltage distribution box when the bypass system is determined to run normally according to the power parameters.
In one embodiment, after the distribution transformer to be overhauled is overhauled, the distribution transformer to be overhauled and the distribution transformers in the adjacent transformer areas are enabled to run in parallel through the low-voltage distribution box; the step of confirming the parallel operation comprises the following steps:
carrying out phase checking on the distribution transformer to be overhauled after the overhauling is finished, and putting the distribution transformer to be overhauled into operation after the phase checking is correct;
and respectively measuring the power parameters of the low-voltage flexible cable and the distribution transformer to be overhauled after the overhaul is finished, and confirming that the distribution transformer to be overhauled after the overhaul is finished and the distribution transformers in the adjacent distribution areas run in parallel through the low-voltage distribution box when the distribution transformer to be overhauled after the overhaul is determined to run normally according to the power parameters.
In one embodiment, the disconnecting the bypass system after the completion of the overhaul of the distribution transformer to be overhauled includes:
disconnecting the low-voltage flexible cable in the bypass system from the low-voltage distribution box phase by phase;
and discharging the low-voltage flexible cable, so that the distribution transformer to be overhauled and the distribution transformer in each adjacent distribution area respectively supply power to the distribution area.
A distribution transformer service apparatus, the apparatus comprising:
the transformer area determining module is used for determining each adjacent transformer area of the distribution transformer to be overhauled;
the connection module is used for connecting the distribution transformer to be overhauled and the low-voltage distribution box of the distribution transformer in each adjacent distribution area to form a bypass system, and the bypass system supplies power to the distribution area where the distribution transformer to be overhauled is located and each adjacent distribution area when the distribution transformer to be overhauled is overhauled;
and the maintenance module is used for maintaining the distribution transformer to be maintained and disconnecting the bypass system after the maintenance of the distribution transformer to be maintained is completed.
An electronic device comprising a memory storing a computer program and a processor implementing the steps of the method described above when the processor executes the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
According to the distribution transformer overhauling method, the distribution transformer overhauling device, the electronic equipment and the storage medium, all adjacent transformer areas of the distribution transformer to be overhauled are determined; the low-voltage distribution box is connected with the distribution transformer to be overhauled and the distribution transformers in the adjacent transformer areas to form a bypass system, and when the distribution transformer to be overhauled is overhauled, the bypass system supplies power to the transformer area where the distribution transformer to be overhauled is located and the adjacent transformer areas; and (4) overhauling the distribution transformer to be overhauled, and disconnecting the bypass system after the overhauling of the distribution transformer to be overhauled is completed. By adopting the method of the embodiment, the distribution transformer to be overhauled which has faults can be overhauled under the condition of no power outage, so that the power supply reliability of the power system can be effectively improved, and the power consumption experience of users is improved.
Drawings
FIG. 1 is a diagram of an environment in which a method for servicing a distribution transformer may be implemented in one embodiment;
FIG. 2 is a diagram of an environment in which a method for servicing a distribution transformer according to another embodiment may be implemented;
FIG. 3 is a schematic flow diagram of a distribution transformer servicing method in one embodiment;
FIG. 4 is a schematic diagram of a distribution transformer and adjacent bays to be serviced in one embodiment;
FIG. 5 is a schematic illustration of a low voltage flex cable connection in one embodiment;
FIG. 6 is a block diagram of an embodiment of a distribution transformer service unit;
FIG. 7 is a diagram of the internal structure of an electronic device in one embodiment;
fig. 8 is an internal structural view of an electronic apparatus in another embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in fig. 1, the application environment relates to an electric power system 100, a plurality of transformer areas exist in the electric power system 100, a distribution transformer exists in each transformer area, and taking the transformer area 1 as an example, when a distribution transformer (referred to as a distribution transformer to be overhauled in the embodiment of the present application) in the transformer area 1 needs to be overhauled, for example, when a distribution transformer in the transformer area 1 fails, the distribution transformer to be overhauled may be overhauled by the distribution transformer overhauling method provided by the present application. During maintenance, firstly, determining a neighboring transformer area of a distribution transformer to be maintained, taking the selection of one neighboring transformer area as an example, selecting the transformer area 2, connecting the transformer area 1 with a low-voltage distribution box of the distribution transformer in the transformer area 2 to form a bypass system, and supplying power to the transformer area 1 and the transformer area 2 by the bypass system when the distribution transformer to be maintained is maintained; and (4) overhauling the distribution transformer to be overhauled, and disconnecting the bypass system after the overhauling of the distribution transformer to be overhauled is completed.
In one embodiment, as shown in fig. 2, the application environment involves both the controller 102 and the power system 104, the controller 102 may communicate with the power system 104 through a network or other means, and the controller 102 may be located outside the power system 104 or may be installed on electrical equipment and/or electrical lines inside the power system 104. In the power system 104, a plurality of transformer areas exist, each transformer area has a distribution transformer, taking the transformer area 1 as an example, when a distribution transformer (referred to as a distribution transformer to be overhauled in the embodiment of the present application) in the transformer area 1 needs to be overhauled, for example, when a distribution transformer in the transformer area 1 has a fault, the distribution transformer to be overhauled can be overhauled by the distribution transformer overhauling method provided by the present application. During maintenance, a neighboring transformer area of the distribution transformer to be maintained is determined, for example, one neighboring transformer area is selected, if the transformer area 2 is selected, the low-voltage distribution box which is connected with the distribution transformer in the transformer area 1 and the distribution transformer in the transformer area 2 can be controlled through the controller 102 to form a bypass system, and the bypass system supplies power to the transformer area 1 and the transformer area 2 when the distribution transformer to be maintained is maintained; the distribution transformer to be overhauled is overhauled, and after the overhaul of the distribution transformer to be overhauled is completed, the bypass system can be controlled to be disconnected through the controller 102.
The controller 102 may be a terminal or a server. The terminal can be, but is not limited to, various control chips, personal computers, notebook computers, smart phones, tablet computers and portable wearable devices, and the server can be implemented by an independent server or a server cluster formed by a plurality of servers.
In one embodiment, as shown in fig. 3, there is provided a distribution transformer service method comprising the steps of:
step S202, determining each adjacent transformer area of the distribution transformer to be overhauled.
Among them, in an electric power system, a distribution transformer is an electric device for transforming an alternating current voltage and current according to an electromagnetic induction law, thereby transmitting alternating current electric energy. According to the voltage class, it can be classified into ultra-high voltage (750 kilovolt (kV) and above) transformers, ultra-high voltage (500kV) transformers, 220-plus 110kV transformers, and 35kV and below transformers. The transformer can be classified into an oil-immersed transformer and a dry-type transformer according to the difference of insulating media, and can be classified into a non-excitation voltage-regulating transformer and an on-load voltage-regulating transformer according to the difference of voltage-regulating modes. A distribution transformer that needs to be serviced when a fault occurs is referred to as a distribution transformer to be serviced. The power distribution area refers to a power supply range or area of one distribution transformer, and the power system may include a plurality of power distribution areas and a plurality of distribution transformers.
In one embodiment, when each adjacent station of the distribution transformer to be overhauled is determined, the adjacent station comprises a station with a distance smaller than a preset distance from the distribution transformer to be overhauled. The preset distance can be set to be 200 meters (m), and a plurality of transformer areas which are directly away from the distribution transformer to be overhauled and are smaller than and include 200m can be used as adjacent transformer areas, and the number of the adjacent transformer areas is at least one. For example, if the distribution transformer to be overhauled is located in the distribution area 3, the adjacent distribution areas having a distance smaller than the preset distance from the distribution transformer to be overhauled are the distribution area 1, the distribution area 2, the distribution area 4, and the distribution area 5. In particular, each adjacent zone of the distribution transformer to be overhauled is determined.
In one embodiment, after determining each adjacent distribution transformer area to be overhauled, the method further comprises: and carrying out insulation treatment on the distribution transformer to be overhauled and the distribution transformers in the adjacent transformer areas. The insulation means a safety measure for protecting against electric shock by isolating or wrapping an electrified body with a non-conductive substance, and can be classified into gas insulation, liquid insulation, and solid insulation. In particular, the distribution transformer to be overhauled and the distribution transformer in each adjacent transformer area can be sealed or isolated by using an insulating material, so that the electrical equipment and the electrical lines can work normally. The insulating material may include any of various textiles, organic materials, or inorganic materials, and the like.
And S204, connecting the distribution transformer to be overhauled with the low-voltage distribution box of the distribution transformer in each adjacent transformer area to form a bypass system, wherein the bypass system supplies power to the transformer area where the distribution transformer to be overhauled is located and each adjacent transformer area when the distribution transformer to be overhauled is overhauled.
In an electric power system, a distribution box is a distribution device for distributing, controlling, metering and connecting cables of electric energy, a power supply office generally uses a high-voltage circuit breaker, and a low-voltage distribution box is led out from a low-voltage side after voltage reduction is carried out by a distribution transformer.
Specifically, after determining each adjacent transformer area of the distribution transformer to be overhauled and performing insulation treatment, connecting the distribution transformer to be overhauled and the low-voltage distribution box of the distribution transformer in each adjacent transformer area to form a bypass system. When the distribution transformer to be overhauled is overhauled, the bypass system supplies power to the transformer area where the distribution transformer to be overhauled is located and each adjacent transformer area so as to guarantee that the distribution transformer to be overhauled which breaks down is overhauled under the condition of no power outage.
In one embodiment, the load on the bypass system is limited. In order to ensure the safety of the power supply, the total load of the distribution transformer in the bypass system needs to be measured. And only when the distribution transformer to be overhauled in the bypass system and the distribution transformer in each adjacent transformer area are ensured to run in parallel through the low-voltage distribution box and the total load of the distribution transformer in the bypass system is lower than the safety threshold of the load of the distribution transformer in each adjacent transformer area, the bypass system is put into use.
And step S206, the distribution transformer to be overhauled is overhauled, and after the overhaul of the distribution transformer to be overhauled is completed, the bypass system is disconnected.
In one embodiment, when the distribution transformer to be overhauled is overhauled, the connection between the distribution transformer to be overhauled and the high-voltage circuit breaker and the low-voltage distribution box needs to be disconnected. Servicing may include general maintenance inspection projects or replacement of distribution transformers to be serviced. The general maintenance and inspection items comprise various items such as the existence of oil leakage, the cleanness of a sleeve, the existence of damage traces, the existence of poor contact and overheating of a wiring terminal and the like. And when the distribution transformer to be overhauled is seriously damaged, the new distribution transformer is replaced.
Specifically, the distribution transformer to be overhauled is overhauled, after the overhaul of the distribution transformer to be overhauled is completed, the bypass system is disconnected, so that the distribution transformer to be overhauled after the overhaul is completed and the distribution transformer in each adjacent distribution area respectively supply power to the distribution area, and the power supply is recovered.
In the distribution transformer overhauling method, each adjacent transformer area of the distribution transformer to be overhauled is determined; the low-voltage distribution box is connected with the distribution transformer to be overhauled and the distribution transformers in the adjacent transformer areas to form a bypass system, and when the distribution transformer to be overhauled is overhauled, the bypass system supplies power to the transformer area where the distribution transformer to be overhauled is located and the adjacent transformer areas; and (4) overhauling the distribution transformer to be overhauled, and disconnecting the bypass system after the overhauling of the distribution transformer to be overhauled is completed. By adopting the method of the embodiment, the distribution transformer to be overhauled which has faults can be overhauled under the condition of no power outage, so that the power supply reliability of the power system can be effectively improved, and the power consumption experience of users is improved.
In one embodiment, the step S204 of coupling the distribution transformer to be serviced with the low voltage distribution boxes of the distribution transformers in each adjacent bay to form a bypass system comprises:
step S302, laying low-voltage flexible cables between the distribution transformer to be overhauled and the distribution transformer in each adjacent transformer area.
The flexible cable is a cable with good flexibility and bending life, and compared with a common cable, the flexible cable has the characteristics of long service life, oil resistance, bending resistance, tensile strength, distortion resistance, hydrolysis resistance, corrosion resistance, small bending radius, better shielding function and the like. The low-voltage flexible cable is a flexible cable which can be matched with the voltage of a low-voltage distribution box of a distribution transformer. Laying refers to the installation mode of the low-voltage flexible cable from one place to another place.
Specifically, low voltage flexible cables are laid between the distribution transformer to be serviced and the distribution transformers in each adjacent bay.
And S304, respectively measuring the ground insulation resistance and the interphase insulation resistance of the low-voltage flexible cable to the ground, returning to the step of performing insulation treatment on the distribution transformer to be overhauled and the distribution transformer in each adjacent distribution area when the ground insulation resistance or the interphase insulation resistance is smaller than a preset resistance value, and discharging the low-voltage flexible cable when the ground insulation resistance and the interphase insulation resistance are larger than or equal to the preset resistance value.
The ground insulation resistance refers to insulation resistance after the low-voltage flexible cable is grounded, the interphase insulation resistance refers to insulation resistance between three phases of the low-voltage flexible cable, a megger can be used for measurement, and the test voltage of the megger is 500V or more. Since insulation resistance is the most basic insulation index of electrical equipment and electrical lines, short circuit or open circuit may be caused when the insulation resistance is too small. Therefore, the bypass system can be put into use only under the condition that the insulation resistor meets the preset resistance value condition to ensure the safety of the electrical equipment and the electrical line. The discharging is to discharge the low-voltage flexible cable to ensure the safety of the electric circuit.
Specifically, the insulation resistance to ground and the insulation resistance between phases of the low-voltage flexible cable to the ground are respectively measured. And when the ground insulation resistance or the interphase insulation resistance is smaller than the preset resistance value, returning to the step of performing insulation treatment on the distribution transformer to be overhauled and the distribution transformers in the adjacent transformer areas, and performing insulation treatment again. And when the ground insulation resistance and the interphase insulation resistance are greater than or equal to the preset resistance values, discharging the low-voltage flexible cable. Wherein the preset resistance value may be set to 0.4 mega ohm (M Ω).
And S306, connecting the low-voltage flexible cable with the distribution transformer to be overhauled and the corresponding phase of the low-voltage distribution box of the distribution transformer in each adjacent distribution area to form a bypass system.
The corresponding phases refer to corresponding phases of the low-voltage distribution box of the distribution transformer to be overhauled and the low-voltage distribution boxes of the distribution transformers in adjacent distribution areas. Specifically, the phase A is connected with the phase A, the phase B is connected with the phase B, and the phase C is connected with the phase C. And connecting the low-voltage flexible cable with the distribution transformer to be overhauled and the corresponding phase of the low-voltage distribution box of the distribution transformer in each adjacent distribution area to form a bypass system.
In one embodiment, when the distribution transformer to be overhauled in the bypass system and the distribution transformer in each adjacent platform area run in parallel through the low-voltage distribution box, the distribution transformer to be overhauled is overhauled. Wherein the step of confirming the parallel operation comprises the following steps:
step S402, detecting the preset condition that the distribution transformer to be overhauled and the distribution transformers in the adjacent distribution areas run in parallel through the low-voltage distribution box, and closing a switch connected with the low-voltage flexible cable and the low-voltage distribution box when the preset condition is met.
Specifically, the preset conditions that the distribution transformer to be overhauled and the distribution transformer in each adjacent distribution area run in parallel through the low-voltage distribution box include: the wiring group, the transformation ratio and the short-circuit voltage of the distribution transformer to be overhauled are the same as those of the distribution transformers in the adjacent transformer areas, and the capacity ratio of the distribution transformer to be overhauled to the distribution transformers in the adjacent transformer areas does not exceed a preset ratio.
Wherein, the transformation ratio refers to the voltage ratio or the current ratio, and the same transformation ratio can allow a difference of +/-0.5%. The short-circuit voltages are the same, allowing a difference of ± 10%. The preset ratio of the capacity ratio may be set to 3: 1. And when the condition that the distribution transformer to be overhauled and the distribution transformer in each adjacent distribution area run in parallel through the low-voltage distribution box is determined, closing a switch connected with the low-voltage distribution box through the low-voltage flexible cable.
And S404, respectively measuring power parameters of the low-voltage flexible cable and the distribution transformer to be overhauled, and confirming that the distribution transformer to be overhauled in the bypass system and the distribution transformer in each adjacent distribution area run in parallel through the low-voltage distribution box when the bypass system is determined to run normally according to the power parameters.
In particular, the power parameters may include current, voltage, etc. parameters of the low voltage flexible cable and distribution transformer to be serviced. And when the power parameter is within the parameter range of normal operation, determining that the bypass system operates normally. And when the bypass system is determined to operate normally according to the power parameters, the parallel operation of the distribution transformer to be overhauled in the bypass system and the distribution transformer in each adjacent distribution area through the low-voltage distribution box is determined. At this point the parallel run is complete.
In one embodiment, after the distribution transformer to be overhauled is overhauled, the distribution transformer to be overhauled and the distribution transformers in the adjacent transformer districts are enabled to run in parallel through the low-voltage distribution box. Wherein the step of confirming the parallel operation comprises the following steps:
and step S502, performing phase checking on the distribution transformer to be overhauled after the overhauling is finished, and putting the distribution transformer to be overhauled after the overhauling is finished into operation after the phase checking is correct.
In the power system, phase checking means that whether the phases and the phase sequences of two power sources or loops are the same or not is checked by using an instrument or other methods. Specifically, the phase of the distribution transformer to be overhauled after the overhaul is completed is checked, and whether the connection is reliable or not is confirmed. And after the phase is checked to be correct and the connection is reliable, the distribution transformer to be overhauled after the overhaul is finished is put into operation.
And step S504, respectively measuring power parameters of the low-voltage flexible cable and the distribution transformer to be overhauled after the overhaul is finished, and confirming that the distribution transformer to be overhauled after the overhaul is finished and the distribution transformers in adjacent distribution areas run in parallel through the low-voltage distribution boxes when the distribution transformer to be overhauled after the overhaul is determined to run normally according to the power parameters.
Specifically, the power parameters may include parameters such as current and voltage of the low-voltage flexible cable and the distribution transformer to be overhauled after the overhaul is completed. And when the power parameters are in the parameter range of normal operation, determining that the distribution transformer to be overhauled after the overhaul is finished operates normally. And when the distribution transformer to be overhauled after the overhaul is determined to operate normally according to the power parameters, confirming that the distribution transformer to be overhauled after the overhaul is completed and the distribution transformers in the adjacent transformer areas operate in parallel through the low-voltage distribution boxes. At this point the parallel run is complete.
In one embodiment, the step S206 of disconnecting the bypass system after completing the maintenance of the distribution transformer to be maintained includes:
and step S602, disconnecting the low-voltage flexible cable in the bypass system from the low-voltage distribution box phase by phase.
Specifically, the connection of the low-voltage flexible cable in the ordered phase-by-phase disconnection bypass system with the low-voltage distribution box.
And step S604, discharging the low-voltage flexible cable, so that the distribution transformer to be overhauled and the distribution transformer in each adjacent distribution area respectively supply power to the distribution area.
Specifically, after disconnection, the low-voltage flexible cable is discharged, so that the distribution transformer to be overhauled and the distribution transformer in each adjacent distribution area respectively supply power to the distribution area, and power supply is recovered.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below with reference to the accompanying drawings and one embodiment thereof. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in fig. 4, the power system is a 110kV or 35kV substation with 10kV lines, including bays 1-5, and the distribution transformer to be overhauled is located in bay 4. The distribution transformer overhauling method comprises the following specific steps:
step 2.1, laying a low-voltage flexible cable between the distribution transformer to be overhauled and the distribution transformer in the adjacent transformer area;
2.2, measuring the ground insulation resistance and the interphase insulation resistance of the low-voltage flexible cable to the ground by using a megger with the voltage of 500V or more, and discharging the low-voltage flexible cable when the ground insulation resistance and the interphase insulation resistance are greater than or equal to 0.4M omega;
step 2.3, connecting the low-voltage flexible cable with the corresponding phase of the low-voltage distribution box of the distribution transformer to be overhauled and the distribution transformer in the adjacent distribution area, so that the phase A is connected with the phase A, the phase B is connected with the phase B, and the phase C is connected with the phase C;
step 3.1, detect and wait to overhaul distribution transformer and each distribution transformer in neighbouring platform district pass through the low voltage distribution box preset condition of operation side by side, include: the wiring groups are the same, the transformation ratio is the same (a difference of +/-0.5 percent is allowed), the short-circuit voltage is equal (a difference of +/-10 percent is allowed), and the capacity ratio is not more than 3: 1. After the error is confirmed, a switch connected with the low-voltage flexible cable and the low-voltage distribution box is switched on;
and 3.2, detecting parameters such as current flowing through the low-voltage flexible cable and the distribution transformer to be overhauled, and confirming that the bypass system operates normally. At this point, the parallel operation is confirmed to be completed;
step 5.1, after the reliable connection and the correct check of the distribution transformer to be overhauled are confirmed, putting the distribution transformer to be overhauled into operation;
and 5.2, detecting parameters such as current flowing through the low-voltage flexible cable and the distribution transformer to be overhauled after overhauling, and confirming that the distribution transformer to be overhauled after overhauling normally operates. At this point, the parallel operation is confirmed to be completed;
and 6, disconnecting the low-voltage flexible cable to enable the distribution transformer to be overhauled and the distribution transformer in each adjacent distribution area to supply power to the distribution area respectively, wherein the distribution transformer to be overhauled and the distribution transformer in each adjacent distribution area are maintained, and the method specifically comprises the following steps:
6.1, orderly disconnecting the connection of the low-voltage flexible cable and the low-voltage distribution box in the bypass system phase by phase;
and 6.2, discharging the low-voltage flexible cable. And finishing the maintenance of the distribution transformer to be maintained.
It should be understood that, although the steps in the flowchart of fig. 3 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 3 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.
In one embodiment, as shown in fig. 6, there is provided a distribution transformer service apparatus comprising: a block determination module 710, a linking module 720, and a service module 730, wherein:
and the station area determining module 710 is used for determining each adjacent station area of the distribution transformer to be overhauled.
And the connection module 720 is used for connecting the distribution transformer to be overhauled with the low-voltage distribution box of the distribution transformer in each adjacent distribution area to form a bypass system, and the bypass system supplies power to the distribution area where the distribution transformer to be overhauled is located and each adjacent distribution area when the distribution transformer to be overhauled is overhauled.
And the maintenance module 730 is used for maintaining the distribution transformer to be maintained, and disconnecting the bypass system after the maintenance of the distribution transformer to be maintained is completed.
In one of the embodiments, the distribution transformer service apparatus further comprises an insulation module 600, wherein:
and an insulation module 600, configured to perform insulation processing on the distribution transformer to be overhauled and the distribution transformers in each adjacent distribution area.
In one embodiment, the station zone determination module 710 includes the following elements:
and the adjacent transformer area determining unit is used for determining that the adjacent transformer areas comprise transformer areas with a distance smaller than a preset distance from the distribution transformer to be overhauled, and the number of the adjacent transformer areas is at least one.
In one embodiment, the coupling module 720 includes the following units:
and the cable laying unit is used for laying a low-voltage flexible cable between the distribution transformer to be overhauled and the distribution transformer in each adjacent transformer area.
And the insulation resistance measuring unit is used for respectively measuring the ground insulation resistance of the low-voltage flexible cable to the ground and the interphase insulation resistance between phases, when the ground insulation resistance or the interphase insulation resistance is smaller than a preset resistance value, the step of performing insulation treatment on the distribution transformer to be overhauled and the distribution transformers in the adjacent transformer areas is returned, and when the ground insulation resistance and the interphase insulation resistance are larger than or equal to the preset resistance value, the low-voltage flexible cable is discharged.
And the bypass system unit is used for connecting the low-voltage flexible cable with the distribution transformer to be overhauled and the corresponding phase of the low-voltage distribution box of the distribution transformer in each adjacent distribution area to form the bypass system.
In one embodiment, the service module 730 includes the following elements:
and the overhauling confirmation unit is used for overhauling the distribution transformer to be overhauled when the distribution transformer to be overhauled in the bypass system and the distribution transformer in each adjacent distribution area run in parallel through the low-voltage distribution box.
In one embodiment, the serviceable confirmation unit comprises the following:
the parallel operation first confirmation unit is used for detecting preset conditions that the distribution transformer to be overhauled and the distribution transformers in the adjacent distribution areas parallelly operate through the low-voltage distribution box, and closing a switch connected with the low-voltage flexible cable and the low-voltage distribution box when the preset conditions are met; the preset conditions include: the wiring group, the transformation ratio and the short-circuit voltage of the distribution transformer to be overhauled are the same as those of the distribution transformers in the adjacent transformer areas, and the capacity ratio of the distribution transformer to be overhauled to the distribution transformers in the adjacent transformer areas does not exceed a preset ratio.
And the parallel operation second confirmation unit is used for respectively measuring the power parameters of the low-voltage flexible cable and the distribution transformer to be overhauled, and confirming that the distribution transformer to be overhauled in the bypass system and the distribution transformer in each adjacent distribution area run in parallel through the low-voltage distribution box when the bypass system is determined to run normally according to the power parameters.
In one embodiment, the service module 730 includes the following elements:
and the overhaul completion confirming unit is used for enabling the distribution transformer to be overhauled and the distribution transformers in the adjacent transformer districts to run in parallel through the low-voltage distribution box after the distribution transformer to be overhauled is overhauled.
In one embodiment, the overhaul completion confirmation unit comprises the following units:
and the third confirmation units are operated in parallel and used for performing phase checking on the distribution transformer to be overhauled after the overhauling is finished, and putting the distribution transformer to be overhauled into operation after the phase checking is correct.
And the fourth parallel operation confirmation unit is used for respectively measuring the power parameters of the low-voltage flexible cable and the distribution transformer to be overhauled after the overhaul is finished, and confirming that the distribution transformer to be overhauled after the overhaul is finished and the distribution transformers in the adjacent distribution areas run in parallel through the low-voltage distribution box when the distribution transformer to be overhauled after the overhaul is determined to run normally according to the power parameters.
In one embodiment, the service module 730 includes the following elements:
a coupling disconnection unit for disconnecting the coupling of the low voltage flexible cable in the bypass system with the low voltage distribution box phase by phase.
And the discharging unit is used for discharging the low-voltage flexible cable so that the distribution transformer to be overhauled and the distribution transformer in each adjacent distribution area respectively supply power to the distribution area.
For specific limitations of the distribution transformer overhaul device, reference may be made to the above limitations of the distribution transformer overhaul method, which are not described herein again. The modules in the distribution transformer overhaul device can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the electronic device, or can be stored in a memory in the electronic device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, an electronic device is provided, which may be a server, and the internal structure thereof may be as shown in fig. 7. The electronic device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the electronic device is configured to provide computing and control capabilities. The memory of the electronic equipment comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the electronic device is used for storing distribution transformer overhaul data. The network interface of the electronic device is used for connecting and communicating with an external terminal through a network. The electronic program is executed by a processor to implement a distribution transformer servicing method.
In one embodiment, an electronic device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 8. The electronic device comprises a processor, a memory, a communication interface, a display screen and an input device which are connected through a system bus. Wherein the processor of the electronic device is configured to provide computing and control capabilities. The memory of the electronic equipment comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the electronic device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a distribution transformer servicing method. The display screen of the electronic device can be a liquid crystal display screen or an electronic ink display screen, the display screen of the electronic device can be used for displaying the states of the electric devices and the electric circuits in the power system, and the input device of the electronic device can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the electronic device, an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the configurations shown in fig. 7-8 are only block diagrams of some of the configurations relevant to the present disclosure, and do not constitute a limitation on the electronic devices to which the present disclosure may be applied, and a particular electronic device may include more or less components than shown in the figures, or combine certain components, or have a different arrangement of components.
In one embodiment, an electronic device is provided, which includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the distribution transformer servicing method described above.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which, when executed by a processor, performs the steps of the distribution transformer servicing method described above.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A distribution transformer service method, the method comprising:
determining each adjacent transformer area of the distribution transformer to be overhauled;
connecting the distribution transformer to be overhauled with the low-voltage distribution box of the distribution transformer in each adjacent distribution area to form a bypass system, wherein the bypass system supplies power to the distribution area where the distribution transformer to be overhauled is located and each adjacent distribution area when the distribution transformer to be overhauled is overhauled;
and overhauling the distribution transformer to be overhauled, and disconnecting the bypass system after the overhauling of the distribution transformer to be overhauled is completed.
2. The method of claim 1, further comprising, after said determining each adjacent zone of the distribution transformer to be serviced:
and carrying out insulation treatment on the distribution transformer to be overhauled and the distribution transformer in each adjacent transformer area.
3. The method of claim 1, wherein the adjacent zones comprise zones that are less than a predetermined distance from the distribution transformer to be serviced, and the number of adjacent zones is at least one.
4. The method of claim 1, wherein coupling the distribution transformer to be serviced with a low voltage switchgear of a distribution transformer in each of the adjacent bays forms a bypass system comprising:
laying a low-voltage flexible cable between the distribution transformer to be overhauled and the distribution transformer in each adjacent transformer area;
respectively measuring the ground insulation resistance of the low-voltage flexible cable to the ground and the interphase insulation resistance of the interphase insulation resistance, when the ground insulation resistance or the interphase insulation resistance is smaller than a preset resistance value, returning to the step of carrying out insulation treatment on the distribution transformer to be overhauled and the distribution transformers in the adjacent transformer areas, and when the ground insulation resistance and the interphase insulation resistance are larger than or equal to the preset resistance value, discharging the low-voltage flexible cable;
and connecting the low-voltage flexible cable with the distribution transformer to be overhauled and the corresponding phase of the low-voltage distribution box of the distribution transformer in each adjacent distribution area to form the bypass system.
5. The method of claim 4, wherein the distribution transformer to be serviced is serviced while the distribution transformer to be serviced in the bypass system is operating in parallel with the distribution transformer in each of the adjacent bays through the low voltage distribution box; the step of confirming the parallel operation comprises the following steps:
detecting preset conditions that the distribution transformer to be overhauled and the distribution transformers in the adjacent distribution areas run in parallel through the low-voltage distribution box, and closing a switch connected with the low-voltage flexible cable and the low-voltage distribution box when the preset conditions are met; the preset conditions include: the wiring group, the transformation ratio and the short-circuit voltage of the distribution transformer to be overhauled are the same as those of the distribution transformers in the adjacent transformer areas, and the capacity ratio of the distribution transformer to be overhauled to the distribution transformers in the adjacent transformer areas does not exceed a preset ratio;
and respectively measuring power parameters of the low-voltage flexible cable and the distribution transformer to be overhauled, and confirming that the distribution transformer to be overhauled in the bypass system and the distribution transformer in each adjacent distribution area run in parallel through the low-voltage distribution box when the bypass system is determined to run normally according to the power parameters.
6. The method according to claim 1, wherein after the overhaul of the distribution transformer to be overhauled is completed, the distribution transformer to be overhauled and the distribution transformers in the adjacent districts are operated in parallel through the low-voltage distribution box; the step of confirming the parallel operation comprises the following steps:
carrying out phase checking on the distribution transformer to be overhauled after the overhauling is finished, and putting the distribution transformer to be overhauled into operation after the phase checking is correct;
and respectively measuring the power parameters of the low-voltage flexible cable and the distribution transformer to be overhauled after the overhaul is finished, and confirming that the distribution transformer to be overhauled after the overhaul is finished and the distribution transformers in the adjacent distribution areas run in parallel through the low-voltage distribution box when the distribution transformer to be overhauled after the overhaul is determined to run normally according to the power parameters.
7. The method of claim 1, wherein said disconnecting the bypass system after the service of the distribution transformer to be serviced is completed comprises:
disconnecting the low-voltage flexible cable in the bypass system from the low-voltage distribution box phase by phase;
and discharging the low-voltage flexible cable, so that the distribution transformer to be overhauled and the distribution transformer in each adjacent distribution area respectively supply power to the distribution area.
8. An apparatus for servicing a distribution transformer, the apparatus comprising:
the transformer area determining module is used for determining each adjacent transformer area of the distribution transformer to be overhauled;
the connection module is used for connecting the distribution transformer to be overhauled and the low-voltage distribution box of the distribution transformer in each adjacent distribution area to form a bypass system, and the bypass system supplies power to the distribution area where the distribution transformer to be overhauled is located and each adjacent distribution area when the distribution transformer to be overhauled is overhauled;
and the maintenance module is used for maintaining the distribution transformer to be maintained and disconnecting the bypass system after the maintenance of the distribution transformer to be maintained is completed.
9. An electronic device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor realizes the steps of the method of any of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110262049.4A CN113054656A (en) | 2021-03-10 | 2021-03-10 | Distribution transformer overhauling method and device, electronic equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110262049.4A CN113054656A (en) | 2021-03-10 | 2021-03-10 | Distribution transformer overhauling method and device, electronic equipment and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113054656A true CN113054656A (en) | 2021-06-29 |
Family
ID=76511142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110262049.4A Pending CN113054656A (en) | 2021-03-10 | 2021-03-10 | Distribution transformer overhauling method and device, electronic equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113054656A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113346409A (en) * | 2021-07-14 | 2021-09-03 | 国网河南省电力公司平顶山供电公司 | Uninterrupted power operation method for load transfer maintenance of 10kV outgoing line interval of transformer substation |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0349525A (en) * | 1989-07-15 | 1991-03-04 | Chubu Electric Power Co Inc | Switching method for low voltage side load of power distribution transformer |
| JP2010273430A (en) * | 2009-05-20 | 2010-12-02 | Mitsubishi Electric Corp | Device for switching load of transformer |
| CN103972804A (en) * | 2014-04-18 | 2014-08-06 | 国家电网公司 | Outage-free operating method for temporarily obtaining electric power from ring main unit |
| CN104092284A (en) * | 2014-07-11 | 2014-10-08 | 云南电网公司带电作业分公司 | Working method for replacing 10kV transformer through spare power automatic switching technology in electrified mode |
| CN204720799U (en) * | 2015-03-25 | 2015-10-21 | 广东电网有限责任公司潮州供电局 | Low-voltage network turns fast for contact cabinet |
| CN204794339U (en) * | 2015-07-15 | 2015-11-18 | 云南电网有限责任公司带电作业分公司 | System for electrified adoption is hauled oneself willingly into technique fully and is replaced 10kV transformer |
| US20160049788A1 (en) * | 2014-08-15 | 2016-02-18 | Ragingwire Data Centers, Inc. | Electrical power bypass tool and method |
| CN110739685A (en) * | 2019-10-15 | 2020-01-31 | 广州供电局有限公司 | Uninterrupted power operation method for cable type power distribution network |
-
2021
- 2021-03-10 CN CN202110262049.4A patent/CN113054656A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0349525A (en) * | 1989-07-15 | 1991-03-04 | Chubu Electric Power Co Inc | Switching method for low voltage side load of power distribution transformer |
| JP2010273430A (en) * | 2009-05-20 | 2010-12-02 | Mitsubishi Electric Corp | Device for switching load of transformer |
| CN103972804A (en) * | 2014-04-18 | 2014-08-06 | 国家电网公司 | Outage-free operating method for temporarily obtaining electric power from ring main unit |
| CN104092284A (en) * | 2014-07-11 | 2014-10-08 | 云南电网公司带电作业分公司 | Working method for replacing 10kV transformer through spare power automatic switching technology in electrified mode |
| US20160049788A1 (en) * | 2014-08-15 | 2016-02-18 | Ragingwire Data Centers, Inc. | Electrical power bypass tool and method |
| CN204720799U (en) * | 2015-03-25 | 2015-10-21 | 广东电网有限责任公司潮州供电局 | Low-voltage network turns fast for contact cabinet |
| CN204794339U (en) * | 2015-07-15 | 2015-11-18 | 云南电网有限责任公司带电作业分公司 | System for electrified adoption is hauled oneself willingly into technique fully and is replaced 10kV transformer |
| CN110739685A (en) * | 2019-10-15 | 2020-01-31 | 广州供电局有限公司 | Uninterrupted power operation method for cable type power distribution network |
Non-Patent Citations (4)
| Title |
|---|
| 殷兴光等: "《电工仪表与测量》", 武汉：华中科技大学出版社, pages: 44 * |
| 汪泉: "配网中配电变压器并列运行的分析及应用", 《中国电力教育》, no. 3, 31 March 2011 (2011-03-31), pages 119 * |
| 蔡晓军等: "配电网10kV电缆不停电作业应用技术", 《供用电》 * |
| 蔡晓军等: "配电网10kV电缆不停电作业应用技术", 《供用电》, 31 May 2015 (2015-05-31), pages 31 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113346409A (en) * | 2021-07-14 | 2021-09-03 | 国网河南省电力公司平顶山供电公司 | Uninterrupted power operation method for load transfer maintenance of 10kV outgoing line interval of transformer substation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7634329B2 (en) | Intelligent aircraft secondary power distribution system that facilitates condition based maintenance | |
| CN105474493B (en) | The adaptive guard for distributing power grid based on area concept | |
| Bhargav et al. | Algorithm for fault detection and localisation in a mesh‐type bipolar DC microgrid network | |
| CN113054656A (en) | Distribution transformer overhauling method and device, electronic equipment and storage medium | |
| CN104977474A (en) | System for measuring transmission loss in a hvdc system | |
| CN106451220A (en) | Bypass equipment and method for live replacement of equipment on same-tower multi-loop pole tower | |
| Hagh et al. | Faulted feeder identification in active grounded networks | |
| Li et al. | Evaluation of high‐voltage AC cable grounding systems based on the real‐time monitoring and theoretical calculation of grounding currents | |
| Ghorbani et al. | Hybrid multi agent approach for power distribution system restoration | |
| Chouhan et al. | Optimal number and placement of automated sectionalizing switches for smart grid distribution automation | |
| Klapp et al. | Application of an intelligent static switch to the point of common coupling to satisfy IEEE 1547 compliance | |
| Coelho et al. | Detailed versus simplified representation of a pipeline for assessment of inductive and conductive couplings to an overhead transmission lines during steady-state and fault conditions | |
| Li et al. | Impact analysis of the capacitive coupling sensor on bushing external insulation | |
| CN108923524A (en) | A kind of off-line UPS power control system | |
| Liao et al. | Evaluation of voltage imbalance on low‐voltage distribution networks considering delta‐connected distribution transformers with a symmetrical NGS | |
| Parol et al. | Assessment of electric shock hazard coming from earth continuity conductors in 110 kV cable lines | |
| Gudzius et al. | Characteristics of fault detection system for smart grid distribution network | |
| Burstein et al. | Effect of Network Protection Requirements on the Design of a Flexible AC/DC‐link | |
| CN206195248U (en) | Electrified bypass equipment who changes with equipment on pole multiloop shaft tower | |
| Chen et al. | Systematized short-circuit analysis of a 2× 25 kV electric traction network | |
| Lai et al. | A MILP optimization model for siting isolation devices in distribution systems with DERs to enhance reliability | |
| Ahmed et al. | Risk assessment of server outages due to voltage dips in the internal power supply system of a data center | |
| Faria da Silva et al. | Distance protection of multiple‐circuit shared tower transmission lines with different voltages–Part I: fault current magnitude | |
| Mendoza et al. | Coordinated recharge of electric vehicles in real time | |
| WO2007064265A1 (en) | Substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210629 |